Nitrogen Attached Indirectly To The Hetero Ring By Nonionic Bonding Patents (Class 549/373)
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Patent number: 4630897Abstract: A novel liquid crystal compound has a formula: ##STR1## where: ##STR2## is a trans-2,5-disubstituted-1,3-dioxan ring or a 2,5-disubstituted-1,3-pyrimidine ring ##STR3## is a 1,4-disubstituted benzene ring optionally containing one or more F, Cl or CH.sub.3 groups as lateral substituents; R.sub.1 is an alkyl group; andX is a terminal group selected from H, CN, Cl, F and R.sub.2 where R.sub.2 is selected from alkyl R.sub.3, alkoxy OR.sub.3, alkylcarbonyloxy OCOR.sub.3 and alkoxycarbonyloxy OCOOR.sub.3.Type: GrantFiled: February 4, 1985Date of Patent: December 23, 1986Assignee: The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Northern IrelandInventors: Beatrice M. Andrews, Neil Carr, George W. Gray, Christine Hogg
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Patent number: 4621901Abstract: Liquid crystalline mixtures containing compounds of the formula ##STR1## wherein n stands for the number 0 or 1; X.sup.1 and X.sup.2 denote single covalent bonds or one of the symbols X.sup.1 and X.sup.2 also denotes --COO--, --OOC-- or --CH.sub.2 CH.sub.2 --; the rings A.sup.1, A.sup.2, and A.sup.3 represent 1,4-phenylene, 2-fluoro-1,4-phenylene or trans-1,4-cyclohexylene or one of these rings also represents a 2,5-disubstituted pyrimidine ring or a trans-2,5-disubstituted m-dioxane ring; R.sup.1 signifies 4-alkenyl or on a cyclohexyl ring also 2Z-alkenyl; and R.sup.2 denotes alkyl, alkoxy, --CN or --NCS,as well as the manufacture of these compounds and the use for electro-optical purposes are described.Type: GrantFiled: June 26, 1985Date of Patent: November 11, 1986Assignee: Hoffmann-La Roche Inc.Inventors: Martin Petrzilka, Martin Schadt
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Patent number: 4607045Abstract: Azolylmethylcycloacetals of the formula I ##STR1## where R is phenyl which can be substituted by halogen, or is C.sub.1 -C.sub.6 -alkyl, R.sup.1 is hydrogen or C.sub.1 -C.sub.3 -alkyl, Z is CH or N, and m is 0 or 1, and their physiologically tolerated addition salts with acids and their preparation are described.The novel substances have an antimycotic action.Type: GrantFiled: January 16, 1985Date of Patent: August 19, 1986Assignee: BASF AktiengesellschaftInventors: Bernd Janssen, Friedrich-Wilhelm Kohlmann, Walter Wesenberg, Wolfgang Heberle
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Patent number: 4600528Abstract: New decalin-carbonitriles of the formula I ##STR1## wherein R.sup.1 is an alkyl group with 1-10 C atoms, it being possible for up to two CH.sub.2 groups to be replaced by O atoms, Z is --CH.sub.2 CH.sub.2 --, --CO--O--, --O--CO--, --O--CH.sub.2 --, --CH.sub.2 O-- or a single bond, A is 1,4-phenylene, 1,4-cyclohexylene, 1,3-dioxane-2,5-diyl, 1,4-bicyclo(2,2,2)octylene, pyrimidine-2,5-diyl or a single bond, and R.sup.2 is an alkyl group with 1 to 10 C atoms, it being possible for up to two CH.sub.2 groups to be replaced by O atoms, or is F, Cl, Br, CN, --O--COR.sup.3 or --COOR.sup.3, or, if at least one of the groups Z and A is not a single bond, can also be H and R.sup.3 is alkyl of 1 to 6 C atoms, and the acid addition salts of basic compounds of this type, are suitable for use as components of liquid crystal dielectrics.Type: GrantFiled: June 1, 1984Date of Patent: July 15, 1986Assignee: Merck Patent Gesellschaft mit Beschrankter HaftungInventors: Rudolf Eidenschink, Georg Weber
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Patent number: 4594446Abstract: The invention relates to new antimicrobially active 3-cephem compounds, processes for preparing such compounds, new intermediate compounds comprising alkoxyimino dioxy butyric acid derivatives useful in said processes, and processes for preparation of said intermediates.Type: GrantFiled: January 14, 1985Date of Patent: June 10, 1986Assignee: Fujisawa Pharmaceutical Co., Ltd.Inventors: Ikuo Ueda, Takao Takaya, Masakazu Kobayashi, Takashi Masugi, Hisashi Takasugi, Hiromu Kochi, Tadashi Kitaguchi
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Patent number: 4567197Abstract: The invention concerns novel 4-phenyl-1,3-dioxan-5-ylalkenoic acid derivatives of the formula I having cis relative stereochemistry at positions 4 and 5 of the dioxane ring and wherein Ra and Rb are variously hydrogen, alkyl, halogenoalkyl, alkenyl, and optionally substituted aryl or arylalkyl, Rc is hydroxy, alkoxy or alkanesulphonamido, n is 1 or 2, A is ethylene or vinylene, Y is (2-5C)polymethylene optionally substituted by alkyl, and benzene ring B is optionally substituted phenyl, or, when Rc is hydroxy, a salt thereof. The acid derivatives antagonize one or more of the actions of thromboxane A.sub.2 (TXA.sub.2) and are expected to be of value in those disease conditions in which TXA.sub.2 is involved. The invention also provides pharmaceutical compositions containing an acid derivative of formula I, and processes for their chemical production.Type: GrantFiled: May 6, 1983Date of Patent: January 28, 1986Assignee: Imperial Chemical Industries PLCInventors: Andrew G. Brewster, Peter W. R. Caulkett
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Patent number: 4565881Abstract: Liquid crystal substituted 1,3-dioxanes and mixtures containing the same.The invention relates to liquid crystal substituted 1,3-dioxanes and substances containing the same, for electro-optical arrays for the modulation of incident or transmitted light as well as for the reproduction of figures, symbols and images.The object of the invention is nematic liquid-crystal substances with favorable properties with respect to melting and clear points, stability toward thermal stress, effect of light, chemicals and electric fields as well as loss of color and processes for their production.The object is accomplished by the creation of new nematic liquid-crystal substances.According to the invention, liquid crystal 2,5-disubstituted derivatives of 1,3-dioxane of the general formula ##STR1## are proposed, wherein ##STR2## The new substances may be used in mixtures containing at least one of the substances according to the invention.Type: GrantFiled: August 6, 1982Date of Patent: January 21, 1986Assignee: Veb Werk fur Fernsehdektronik im Veb Kombinat MikroelektronikInventors: Dietrich Demus, Horst Zaschke, Hans-Matthias Vorbrodt, Horst Kresse, Wolfgang Weissflog
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Patent number: 4565425Abstract: Compounds of the formula ##STR1## wherein R.sup.1 is hydrogen or straight-chain alkyl; R.sup.2 is --CN, --R, --COR, --COOR or when R.sup.2 is positioned on an aromatic ring R.sup.2 also can be --OR, --OOCR or --F; R is alkyl; A is a group with 1 to 4 six-membered rings, these rings being linked directly with one another and with ring B in each case via a single covalent bond or being linked at one or two positions also via --COO--, --OOC-- or --CH.sub.2 CH.sub.Type: GrantFiled: March 5, 1984Date of Patent: January 21, 1986Assignee: Hoffmann-La Roche Inc.Inventors: Martin Petrzilka, Martin Schadt
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Patent number: 4564479Abstract: Compounds of the formula I ##STR1## in which A is C.sub.2-12 -alkenyl, C.sub.4-8 -cycloalkenyl or a grouping--C(R).dbd.C(R')--Y and Y, R, R', R.sub.1, R.sub.2, R.sub.3 and R.sub.3 ' are as defined in patent claim 1, can be prepared in high yields in a simple and economical manner by reacting corresponding bromobenzenes or iodobenzenes with a compound HA in the presence of an alkali metal salt or alkaline earth metal salt of an aliphatic monocarboxylic acid having 1-12 C atoms or benzoic acid, of a cyclic or N,N-disubstituted amide as the solvent, particularly N,N-dimethylformamide, and of a palladium compound which can, if desired, contain arsenic or phosphorus, as the catalyst.Type: GrantFiled: October 29, 1982Date of Patent: January 14, 1986Assignee: Ciba-Geigy CorporationInventor: Alwyn Spencer
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Patent number: 4551264Abstract: New polyhalogenoaromatic compounds of Formula I ##STR1## wherein Y and Z are each independently alkyl, alkoxy or alkanoyl each of 1 to 12 C atoms, --COOR.sup.1, --O--CO--R.sup.1, CN, NO.sub.2, NH.sub.2 or OH;Q is one or two identical or different radicals selected from Ph, Cy, 1,4-bicyclo[2,2,2]octylene or 1,3-dioxane-2,5-diyl;X.sup.1 to X.sup.4 are each independently H, F, Cl or Br;R.sup.1 is alkyl of 1 to 4 C atoms, Ph--R.sup.2 or Cy--R.sup.2 ;R.sup.2 is alkyl or alkoxy each of 1-12 C atoms or CN;Ph is 1,4-phenylene; and Cy is 1,4-cyclohexylene,can be used as components of liquid-crystal dielectrics.Type: GrantFiled: March 14, 1983Date of Patent: November 5, 1985Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Rudolf Eidenschink, Michael Romer, Georg Weber
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Patent number: 4537905Abstract: Substituted oximinoacetanilides of the general formula ##STR1## in which R.sup.1 denotes an alkyl or alkoxy group or a halogen atom,R.sup.2 denotes a hydrogen or halogen atom or an alkyl or trifluoromethyl group,R.sup.3 denotes a hydrogen or halogen atom or an alkyl group,R.sup.4 denotes a hydrogen atom or a methyl group,R.sup.5 denotes an alkoxy, amino or --NH--CO--NH--R.sup.7 group,whereinR.sup.7 represents a hydrogen atom or an optionally cyano-, alkoxy- or alkoxycarbonyl-substituted alkyl group, or represents a cycloalkyl group, andR.sup.6 denotes various aliphatic or heterocyclic radicals, are new and find use as pest-combating agents, in particular as fungicides.Type: GrantFiled: January 27, 1983Date of Patent: August 27, 1985Assignee: Bayer AktiengesellschaftInventors: Wilhelm Brandes, Werner Daum
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Patent number: 4533379Abstract: Novel compounds of the general formula ##STR1## wherein R represents a hydrogen or halogen atom or a (cyclo) alkyl group, R.sup.3 represents H, CH.sub.3, or OCH.sub.3, n=0 or 1, and when n=0, R.sup.2 represents a hydrogen atom and R.sup.1 a hydrogen atom or a monovalent substituent thereby forming an alkoxide, ether, ester, or other alcohol derivative, and when n=1, each R.sup.1 and R.sup.2 independently represents one of the atoms specified for R.sup.1 when n=0, or R.sup.1 and R.sup.2 together represent a bivalent group thereby forming a cyclic ether, ester, or other diol derivative, have useful herbicidal properties.Type: GrantFiled: June 14, 1983Date of Patent: August 6, 1985Assignee: Shell Oil CompanyInventors: Robert van Helden, Frank Baardman, Johannes L. M. Syrier
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Patent number: 4530716Abstract: The oxime ethers of the formula I below are able to act as antidotes or safeners to protect cultivated plants from the phytotoxic effects of herbicides. Such cultivated plants are preferably sorghum, cereals, maize and rice, and herbicides are principally chloroacetanilides and thiocarbamates. The oxime ethers have the formula I ##STR1## wherein n is 1 or 2, each of R.sub.1 and R.sub.2 is hydrogen or C.sub.1 -C.sub.4 alkyl each of R.sub.3 and R.sub.4 is hydrogen, halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 haloalkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 haloalkoxy, C.sub.1 -C.sub.4 alkylthio, C.sub.1 -C.sub.4 haloalkylthio, C.sub.1 -C.sub.4 alkylsulfinyl, C.sub.1 -C.sub.4 alkylsulfonyl, C.sub.1 -C.sub.4 haloalkylsulfinyl, C.sub.1 -C.sub.4 haloalkylsulfonyl or nitro; each of R.sub.5 and R.sub.6 independently of the other is C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 haloalkyl, C.sub.2 -C.sub.8 alkoxyalkyl, C.sub.3 -C.sub.4 alkenyl, C.sub.3 -C.sub.Type: GrantFiled: March 10, 1983Date of Patent: July 23, 1985Assignee: Ciba-Geigy CorporationInventors: Henry Martin, Urs Fricker
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Patent number: 4528114Abstract: Compounds of the formula ##STR1## wherein ring B stands for 1,4-phenylene or a trans-1,4-disubstituted cyclohexane ring and A stands for a group with 1 to 3 six-membered rings, which together with ring B represents a central group of formulae II-XIII; R.sup.1 signifies a straight-chain alkyl group containing 1 to 9 carbon atoms or when R.sup.1 is attached to a benzene, monofluorinated benzene or pyrimidine, ring R.sup.1 also signifies a straight-chain alkoxy group with 1 to 9 carbon atoms; and R.sup.2 signifies hydrogen, cyano or a straight-chain alkyl group containing 1 to 7 carbon atoms,their manufacture, liquid crystalline mixtures which contain said compounds and their use for electro-optical purposes are described.The compounds of formula I are especially valuable as components in liquid crystal mixtures and for the most part themselves have liquid crystalline properties.Type: GrantFiled: December 3, 1982Date of Patent: July 9, 1985Assignee: Hoffmann-La Roche Inc.Inventor: Martin Petrzilka
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Patent number: 4515960Abstract: The invention provides compounds of the formula I ##STR1## in which m is 1 to 3 and n is 1 to 4, a process for their preparation, and their use as intermediates for the manufacture of valuable medicaments, and starting products for the preparation of compounds of the formula I.Type: GrantFiled: May 16, 1983Date of Patent: May 7, 1985Assignee: Hoechst AktiengesellschaftInventor: Volker Teetz
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Patent number: 4512636Abstract: A novel liquid crystal compound has a formula: ##STR1## where: ##STR2## is a trans-2,5-disubstituted-1,3-dioxan ring or a 2,5-disubstituted-1,3-imidine ring ##STR3## is a 1,4-disubstituted benzene ring optionally containing one or more F, Cl or CH.sub.3 groups as lateral substituents; R.sub.1 is an alkyl group; andX is a terminal group selected from H, CN, Cl, F and R.sub.2 where R.sub.2 is selected from alkyl R.sub.3, alkoxy OR.sub.3, alkylcarbonyloxy OCOR.sub.3 and alkoxycarbonyloxy OCOOR.sub.3.Type: GrantFiled: June 7, 1983Date of Patent: April 23, 1985Assignee: The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdon of Great Britian and Northern Ireland of WhitehallInventors: Beatrice M. Andrews, Neil Carr, George W. Gray, Christine Hogg
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Patent number: 4496755Abstract: A manufacturing method is described for the preparation of optically active 1-(6-methoxy-2-naphthyl)-2-(alkoxycarbonyl)amino-1-propanone, its derivatives and their halo analogs. The optically active 1-(6-methoxy-2-naphthyl)-2-(alkoxycarbonyl)amino-1-propanone, its derivatives and their halo analogs are useful intermediates in the preparation of 2-(6-methoxy-2-naphthyl)propionic acid, which is useful as pharmaceutical, e.g. antiinflammatory, analgesic and anti-pyretic agents.Type: GrantFiled: March 28, 1983Date of Patent: January 29, 1985Assignee: Sagami Chemical Research CenterInventors: Genichi Tsuchihashi, Shuichi Mitamura, Koji Kitajima, Kumi Kobayashi
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Patent number: 4494983Abstract: Novel chloroacetic acid cyclohexylamides of the formula I ##STR1## where R.sup.1, R.sup.2 and R.sup.3 have the meanings given in the description, their preparation and their use as herbicides.Type: GrantFiled: June 1, 1982Date of Patent: January 22, 1985Assignee: BASF AktiengesellschaftInventors: Karl Eicken, Norbert Goetz, Bruno Wuerzer
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Patent number: 4486332Abstract: The invention relates to liquid crystal nematic substances based on new derivatives of 1,3-dioxanes in electro-optical components, which are used, for instance, as displays in electronic clocks and computer systems.The subject of the invention is nematic liquid crystal substances with favorable properties concerning melting and clear temperatures, stability against thermal stress and electrical fields, low viscosity and low threshold voltage.It was found that liquid crystal 2,5-di-substituted cyclohexyl derivatives of 1,3 dioxanes, having the general formula ##STR1## R.sup.1 =C.sub.n H.sub.2n+1 ; C.sub.n H.sub.2n+1 O; C.sub.n H.sub.2n+1 COO; CN; NO.sub.2 ; F; Cl; Brand R.sup.2 =C.sub.n H.sub.2n+1 with n+1 to 9are suitable for use in electro-optical components.Type: GrantFiled: August 4, 1982Date of Patent: December 4, 1984Assignee: VEB Werk fur Fernsehelektronik im VEB Kombinat MikroelektronikInventors: Dietrich Demus, Horst Zaschke, Hans-Matthias Vorbrodt, Sylvia Deresh
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Patent number: 4465503Abstract: There are presented new diphenyl ether derivatives having a substituent selected from a halogen atom, a trifluoromethyl group and a methoxy group at the 4-position in one phenyl moiety, having optionally also halo-substituents at the 2- and 6-positions, and having a nitro group at the 4'-position and a substituent selected from an unsubstituted or substituted (1,3-dioxorane-4-yl)methoxy group, an unsubstituted or substituted (1,3-dioxa-5-cyclohexyloxy) group and an alkyl- or (substituted)amino-sulfonyloxy group at the 3'-position in the other phenyl moiety. They exhibit improved herbicidal effects on various weeds without any adverse phytotoxic effect on crops, e.g. rice seedlings.Type: GrantFiled: July 30, 1980Date of Patent: August 14, 1984Assignee: Ube Industries Ltd.Inventors: Hakobu Sekioka, Mitsuaki Takenaka, Yoshio Kawaguchi, Seiji Takamura, Minoru Nishimura, Masanori Watanabe
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Patent number: 4465502Abstract: Compounds of the formula: ##STR1## wherein X is halo; m and n are 0 or 1; R.sup.1 and R.sup.3 are hydrogen, alkyl or are joined to form a carbocyclic ring; R.sup.2 and R.sup.4 are hydrogen or alkyl;R.sup.5 and R.sup.6 are hydrogen, alkyl or alkoxyalkyl; R.sup.7 is hydrogen, halo, nitro, alkoxy or alkyl; and Y is oxygen or NR.sup.8 wherein R.sup.8 is hydrogen or alkyl, have herbicidal and growth-regulating activity, particularly against grassy weeds.Type: GrantFiled: September 7, 1982Date of Patent: August 14, 1984Assignee: Chevron Research CompanyInventor: John W. Kobzina
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Patent number: 4448773Abstract: Compounds of the formula ##STR1## in which Ar is 2-alkyl-, -alkoxy- or -halo-methyl-phenyl or .alpha.-naphthyl, each of which is further substituted,R.sub.1 is 2-furyl, 2-tetrahydrofuryl, alkenyl, cyclopropyl, .beta.-alkoxyethyl, hydroxymethyl, triazolylmethyl, imidazolylmethyl, pyrazolylmethyl, alkylsulfinyl, alkylsulfonyl, alkoxy, alkenyloxy, alkynyloxy, alkylthio, alkenylthio, alkynylthio, alkylsulfinyloxy, dialkylaminosulfinyloxy, phosphoric or thiophosphoric esters or amides, or alkylcarbonyloxy,R.sub.7 is hydrogen or optionally-substituted methyl or ethyl, andR.sub.8 is alkyl optionally substituted by alkoxy,are microbicidally, in particular fungicidally, active. Preferred compounds are those in which Ar is 2-methylphenyl, 2-methoxyphenyl, 2-chlorophenyl or .alpha.-naphthyl, each of which is further substituted by azido, and each of R.sub.7 and R.sub.8 is methyl.Type: GrantFiled: April 22, 1982Date of Patent: May 15, 1984Assignee: Ciba-Geigy CorporationInventors: Peter Riebli, Hanspeter Fischer, Rudolph C. Thummel, Adolf Hubele
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Patent number: 4425357Abstract: Acyl anilines are disclosed having the formula ##STR1## wherein R and R.sup.1 (like or unlike each other)=H; CH.sub.3 ; C.sub.2 H.sub.5 ; n.C.sub.3 H.sub.7 ; --CH.sub.2 --CH.dbd.CH.sub.2 ; --CH.dbd.CH--CH.sub.3 ;R.sup.3 and R.sup.4 (like or unlike each other)=H; alkyl C.sub.1 -C.sub.3 ; halomethyl; Cl; F; CN; O-alkyl; S-alkyl; alkoxymethyl; orR.sup.3 and R.sup.4 together are (CH.sub.2 .dbd.) ##STR2## n=0,1 Z=phenyl optionally substituted; ##STR3## And R.sup.2 =H, CH.sub.3 ; m=1,2; Y=alkynyl C.sub.2 -C.sub.8 ; phenyl optionally substituted; phenyl-acetyl; furyl, thienyl; pyridyl; heterocyclic groups containing 2 or 3 heteroatoms, one of them different from nitrogen;R.sup.8 =CH.sub.3 ; alkoxymethyl; halomethyl; O-alkyl.The compounds of formula I are endowed with a high fungicidal activity and with a low phytotoxicity.Type: GrantFiled: May 8, 1981Date of Patent: January 10, 1984Assignee: Montedison S.p.A.Inventors: Enrico Bosone, Giovanni Camaggi, Lambertus de Vries, Carlo Garavaglia, Luigi Garlaschelli, Franco Gozzo, Jan C. Overeem, Simone Lorusso
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Patent number: 4424372Abstract: Disclosed are compounds of the formula: ##STR1## wherein R.sub.1 is an alkyl group having 1 to 10 carbon atoms and R.sub.2 is either an alkyl or alkoxy group having 1 to 10 carbon atoms or a cyano group or a nitro group. The compounds of the invention are suitable as liquid crystal materials in electrooptic displays. Specifically, these compounds provide a wide mesomorphic range and a high clearing point when added to nematic liquid crystal mixtures used in multiplexed electrooptical displays.Type: GrantFiled: September 20, 1982Date of Patent: January 3, 1984Assignee: Timex CorporationInventor: Ying-Yen Hsu
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Patent number: 4424371Abstract: Disclosed are compounds of the formula: ##STR1## wherein R is an alkyl group having 1 to 8 carbon atoms and X is a dioxane, cyclohexane, or benzene ring. The compounds of the invention are suitable as liquid crystal materials in electrooptical displays. Specifically, when added to nematic liquid crystals, these compounds provide an increase in the positive dielectric anisotropy of the liquid crystal composition.Type: GrantFiled: September 23, 1982Date of Patent: January 3, 1984Assignee: Timex CorporationInventor: Ying-Yen Hsu
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Patent number: 4424370Abstract: The invention is directed to a cyclic acetal of N-acylglutamic acid-.gamma.-semialdehyde of the formula ##STR1## in which A is an unsubstituted alkylene group having 2 to 3 carbon atoms or such an alkylene group substituted by 1 to 2 methyl groups and R is a methyl, methoxy, phenyl, or benzyloxy group and to a method of producing a compound of formula (I) by reaction of a compound of the general formula ##STR2## in which A is as defined above, with hydrogen cyanide or a cyanide ion supplying compound, ammonia or an ammonium ion supplying compound and carbon dioxide or a carbonate ion supplying compound and basic hydrolysis of the reaction mixture obtained and reaction of the hydrolysis mixture with a suitable acylating compound and use of the compounds of formula (I) to produce .alpha.-N-acyltryptophane.Type: GrantFiled: November 10, 1981Date of Patent: January 3, 1984Assignee: Degussa AktiengesellschaftInventors: Axel Kleemann, Marc Samson
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Patent number: 4422864Abstract: Cyclohexanedione derivatives of the general formula ##STR1## where R.sup.1 is alkyl, R.sup.2 is alkyl, alkenyl, alkynyl or haloalkenyl, X is alkylene, n is 0 or 1, Y is a heterocyclic radical and Z is hydrogen or methoxycarbonyl, and salts of these compounds are used in herbicides.Type: GrantFiled: May 20, 1982Date of Patent: December 27, 1983Assignee: BASF AktiengesellschaftInventors: Rainer Becker, Dieter Jahn, Wolfgang Rohr, Walter Himmele, Hardo Siegel, Bruno Wuerzer
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Patent number: 4414131Abstract: A novel nematic liquid crystalline composition is provided. A novel liquid crystalline chiral compound, (+)5-(2-methyl) butyl-2(4-cyanophenyl)-1, 3-dioxane, is also provided. When admixed together, these novel components form a phase-change cholesteric liquid crystalline composition which is highly useful as the host medium in a guest-host electrooptical display as a result of its low electrical threshold and optical saturation voltages, steep saturation curve, relatively low optical birefringence, low viscosity and broad liquid crystalline mesomorphic range.The host medium in conjunction with a suitable pleochroic dye provides an improved guest-host composition which exhibits a contrast of greater than 3:1 in certain displays, especially those having liquid crystal alignment layer means providing a moderate tilt angle of 10.degree.-40.degree. at the substrate/guest-host composition interface.Type: GrantFiled: January 13, 1983Date of Patent: November 8, 1983Assignee: Timex CorporationInventors: Nicholas L. Sethofer, Michael C. Harper
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Patent number: 4402728Abstract: This application discloses compounds of the structural formula: ##STR1## wherein each X is independently selected from the group consisting of oxygen and sulfur; m is 0 or 1; R is alkyl. Each R.sup.1 is independently selected from the group consisting of hydrogen and alkyl. Y is selected from the group consisting of alkyl and ##STR2## wherein each Z is independently selected from the group consisting of hydrogen and alkyl.These compounds are particularly useful as pre-emergence herbicides.Type: GrantFiled: April 28, 1982Date of Patent: September 6, 1983Assignee: Velsicol Chemical CorporationInventors: Leonard J. Stach, Sun M. Chen
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Patent number: 4402729Abstract: This invention discloses compounds of the formula ##STR1## wherein X is halogen or trifluoromethyl; Y is selected from the group consisting of hydrogen, halogen, nitro and cyano; R.sup.1 is alkyl; R.sup.2 is selected from the group consisting of hydrogen, alkyl, alkenyl and alkynyl; and R.sup.3 is selected from the group consisting of alkyl and halogen; m is an integer from 0 to 3; and n is the integer 0 or 1 and further herbicidal compositions thereof.Type: GrantFiled: May 7, 1982Date of Patent: September 6, 1983Assignee: Velsicol Chemical CorporationInventor: Takeo Hokama
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Patent number: 4376864Abstract: The invention is directed to cyclic acetals of glutamic acid-.gamma.-semialdehyde of the formula ##STR1## in which A is an unsubstituted alkylene group having 2 to 3 carbon atoms or such an alkylene group substituted by 1 to 2 methyl groups and to a method of producing a compound of formula (I) by reaction of a compound of the general formula ##STR2## in which A is as defined above with hydrogen cyanide or a cyanide ion supplying compound, ammonia or an ammonium ion supplying compound and carbon dioxide or a carbonate ion supplying compound and basic hydrolysis of the reaction mixture obtained and to using the compound of formula (I) to produce D,L-proline.Type: GrantFiled: November 10, 1981Date of Patent: March 15, 1983Assignee: Degussa AGInventors: Karlheinz Drauz, Axel Kleemann, Marc Samson
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Patent number: 4361702Abstract: A process is provided for the preparation of trans-3-formylbut-2-enenitrile (V), a key intermediate in the synthetic pathway leading to trans-zeatin (I) and dihydrozeatin (II), both of which are naturally occurring cytokinins. The process involves a base catalyzed condensation of a dialkyl or cyclic acetal of pyruvaldehyde (III) with acetonitrile to yield the corresponding dialkyl or cyclic acetal of 3-formylbut-2-enenitrile (IV). The reaction proceeds regioselectively to form the favored trans-isomer in good yield. The .alpha.,.beta.-unsaturated nitrile thus formed is hydrolyzed under acidic conditions to yield trans-3-formylbut-2-enenitrile (V), which can be easily distilled without contamination of the cis-isomer. The trans-3-formylbut-2-enenitrile can be selectively or exhaustively reduced to form either trans-3-hydroxymethylbut-2-enylamine (VI) or 3-hydroxymethylbutylamine (VII), which compounds can be condensed with 6-chloropurine (IX) by known methods to form trans-zeatin or dihydrozeatin respectively.Type: GrantFiled: January 21, 1980Date of Patent: November 30, 1982Assignee: Alberta Research CouncilInventors: Shi-Chow Chen, John M. MacTaggart
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Patent number: 4336058Abstract: An herbicide antidote compound having the formula ##STR1## and herbicide antidote compositions comprising (a) an herbicidally effective amount of a thiocarbamate compound of the formula: ##STR2## in which R.sub.1 is alkyl having 1-6 carbon atoms, inclusive; R.sub.2 is selected from the group consisting of alkyl having 1-6 carbon atoms, inclusive; and cyclohexyl; or R.sub.1 and R.sub.2 form indistinguishable parts of a single alkylene ring having 4-10 carbon atoms, inclusive; and R.sub.Type: GrantFiled: February 6, 1981Date of Patent: June 22, 1982Assignee: Stauffer Chemical CompanyInventor: Raymond A. Felix
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Patent number: 4335138Abstract: Novel carbamates derived from substituted cyclic .beta.-keto-alcohols, their preparation, and pharmaceutical formulations which contain these compounds and which may be used as hypnotics in the treatment of sleep disturbance and as sedatives.Type: GrantFiled: September 15, 1980Date of Patent: June 15, 1982Assignee: BASF AktiengesellschaftInventors: Walter-Wielant Wiersdorff, Karl-Heinz Geiss, Harald Weifenbach, Wolfgang Worstmann, Dieter Lenke, Rolf Kretzschmar
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Patent number: 4335054Abstract: Compounds of the formula I ##STR1## in which p, m, Z, R, R' and Y are as defined in claim 1, can be obtained in a simple and economical manner by a novel process which comprises reacting a halide of the formula ##STR2## with the corresponding acrylic acid derivative, in the presence of a base and of certain palladium catalysts, such as palladium acetate. The compounds (I), and functional derivatives prepared therefrom, are useful for the preparation of photocrosslinkable polymers, which can in particular be employed as (so-called) photoresists.Type: GrantFiled: May 8, 1981Date of Patent: June 15, 1982Assignee: Ciba-Geigy CorporationInventors: Hans-Ulrich Blaser, Dieter Reinehr, Alwyn Spencer