Abstract: A compound of formula (I) ##STR1## its isomers and its salts in which R.sub.1, R.sub.3 and R.sub.4 are each independently hydrogen, C.sub.1 -C.sub.8 -alkyl, C.sub.1 -C.sub.8 -alkoxy, halogen, C.sub.1 -C.sub.8 -acyloxy or hydroxyl;R' is hydrogen or C.sub.1 -C.sub.6 -alkyl;R" is either a polyene chain or a benzene ringare useful in cosmetics and in the treatment of various dermatological and other complaints.

Abstract: A process is described for the improved synthesis of the optically pure C.sub.10 -C.sub.18 fragment of the macrolide structure of the immunosuppressant FK-506. This compound is also useful as an intermediate for preparing FK-506 derivatives.

Abstract: This invention relates to new process for preparing certain optically active purine substituted cyclopentene derivatives and novel intermediates used in this process. In particular, the invention concerns the synthesis of the 1R-cis isomer of carbovir, (1R-cis)-amino-1,9-dihydro-9-[4-(hydroxymethyl)-2-cyclopenten-1-yl]-6H-pur in-6-one, an antiviral agent, and certain intermediates.

Abstract: This invention relates to a process for the alkoxylation of an active hydrogen-containing compound comprising contacting the active hydrogen-containing compound with an alkylene carbonate in the presence of a mixed metal oxide catalyst under conditions effective to alkoxylate the active hydrogen-containing compound.

Abstract: A fluorine-substituted compound containing an ether bond and an intermediate thereof are described, which are represented by: ##STR1## wherein R represents a straight-chain alkyl group having 1 to 8 carbon atoms; n represents an integer of 2 to 7; m represents 1 or 2, X represents a hydrogen atom or a fluorine atom and ##STR2## represents a trans-(equatorial-equatorial)cyclohexane ring. A compound represented by formula (II): ##STR3## wherein R represents a straight-chain alkyl group having 1 to 8 carbon atoms; n represents an integer of 2 to 7; m represents 1 or 2, ##STR4## represents a trans-(equatorial-equatorial)cyclohexane ring.

Abstract: The invention relates to an anti-inflammatory or antiallergic composition containing a compound of the formula ##STR1## wherein A is ##STR2## R.sup.1 is aryl which may have cyano or carbamoyl, or heterocyclic group which may have lower alkyl,R.sup.2 is hydrogen or lower alkyl,R.sup.3 is lower alkyl,X is hydrogen, halogen, hydroxy or lower alkyl,m is an integer 1 or 2, andn is an integer 1 to 4, or pharmaceutically acceptable salts thereof.

Abstract: Compounds of the formula ##STR1## wherein R.sup.1 denotes a group R.sup.3 or R.sup.3 --A.sup.4 --Z.sup.3 -- and R.sup.2 denotes a group R.sup.4 or --Z.sup.4 --A.sup.5 --R.sup.4 ; m and n each individually stand for the number 0 or 1; A.sup.1, A.sup.2, A.sup.3, A.sup.4 and A.sup.5 each independently represent unsubstituted or halogen-, cyano- and/or methyl-substituted 1,4-phenylene in which optionally 1 CH group or 2 CH groups is/are replaced by nitrogen, trans-1,4-cyclohexylene in which optionally 2 non-adjacent methylene groups are replaced by oxygen and/or sulphur, 1-cyano-trans-1,4-cyclohexylene, bicyclo[2.2.2]octane-1,4-diyl, naphthalene-2,6-diyl, tetralin-2,6-diyl or trans-decalin-2,6-diyl; Z.sup.1, Z.sup.2, Z.sup.3 and Z.sup.4 each independently signify a single covalent bond, --COO--, --OOC--, --CH.sub.2 O--, --OCH.sub.2 --, --CH.sub.2 CH.sub.2, --C.tbd.C--, --(CH.sub.2).sub.3 O--, --O(CH.sub.2).sub.3 -- or the trans form of --CH.dbd.CH--CH.sub.2 O-- or --OCH.sub.2 --CH.dbd.CH--; R.sup.3 and R.sup.

Abstract: The present invention is concerned with novel tetrahydronaphthalene and indane derivatives of the formula ##STR1## useful as for combatting dermatoses as well as neoplasmas.

Abstract: Novel styryl-tetrahydronaphthalene and indane derivatives useful for treating neoplasms and dermatoses.

Abstract: 1. An aromatic derivative having the formula (I) or the salt thereof: ##STR1## wherein R.sup.1 and R.sup.2 independently represent a hydrogen atom, hydroxyl, a halogen atom, or OR.sup.3 wherein R.sup.3 is C.sub.1 -C.sub.10 alkyl; A-B represents a hydrocarbon moiety having 1 to 10 carbon atoms and containing at least one double bond or a sulfur- or oxygen-containing hydrocarbon moiety having 1 to 10 carbon atoms; n is an integer of 2 to 4; X represents a group ##STR2## and Y represents a hydrogen atom; alkyl having 1 to 5 carbon atoms which may be substituted with aryl; alkenyl having 2 to 5 carbon atoms which may be substituted with aryl or aryl substituted with at least one C.sub.1 -C.sub.5 alkoxy; aryl which may be substituted with at least one carboxy or C.sub.1 -C.sub.5 alkoxycarbonyl or C.sub.1 -C.sub.5 alkoxy; provided that, when R.sup.1 and R.sup.2 are both hydrogen, the moiety --A--B--(CH.sub.2).sub.n --X--Y does not represent ##STR3## wherein n=2 to 4 and R.sup.4 is hydrogen or C.sub.1 -C.sub.

Abstract: Novel styryl-tetrahydromaphthalene and indane derivatives useful for treating neoplasms and dermatoses.

Abstract: The invention relates to dithioacetal compounds having 5-lipoxygenase-inhibiting activity, of the formula: ##STR1## wherein R.sup.1 is lower alkyl, di-(lower)alkylamino, aryl, or heterocyclic group which may have one or more substituents selected from halogen, lower alkyl, lower alkoxy and phenyl,R.sup.2 and R.sup.3 are each lower alkyl, aryl or ar-(lower)alkyl, or R.sup.2 and R.sup.3 are together to form 1,3-dithian ring,R.sup.4 is hydrogen or lower alkoxy, andn is O or an integer 1 to 4 and pharmaceutically acceptable salts thereof.

Abstract: Indane derivatives useful as fragrance-imparting components are disclosed. The represented indane derivatives by the formula (I), ##STR1## wherein ring A is a benzene or cyclohexane ring and R.sup.1 is a hydrogen atom, an alkyl group having 1-4 carbon atoms, or an alkanoyl group having 1-6 carbon atoms, provided that when ring A is benzene, R.sup.1 is a group other than hydrogen atom.

Abstract: A compound of formula (I) ##STR1## its isomers and its salts in which R.sub.1, R.sub.3 and R.sub.4 are each independently hydrogen, C.sub.1 -C.sub.8 -alkyl, C.sub.1 -C.sub.8 -alkoxy, halogen, C.sub.1 -C.sub.8 acyloxy or hydroxyl;R' is hydrogen or C.sub.1 -C.sub.6 -alkyl;R" is either a polyene chain or a benzene ring are useful in cosmetics and in the treatment of various dermatological and other complaints.

Abstract: The invention relates to an anti-inflammatory or antiallergic composition containing a compound of the formula ##STR1## wherein A is ##STR2## R.sup.1 is aryl which may have cyano or carbamoyl, or heterocyclic group which may have lower alkyl,R.sup.2 is hydrogen or lower alkyl,R.sup.3 is lower alkyl,X is hydrogen, halogen, hydroxy or lower alkyl,m is an integer 1 or 2, andn is an integer 1 to 4, or pharmaceutically acceptable salts thereof.

Abstract: An aromatic naphthyl compound of the formula ##STR1## wherein n is 0 or 1,R' is hydrogen, OH, acyloxy, alkoxy or NH.sub.2,R" is hydrogen or lower alkoxy, or R' and R" taken together form an oxo, methano or hydroxy-imino radical,R is --CH.sub.2 OH or --COR.sub.8,R.sub.8 is hydrogen, --OR.sub.9 or ##STR2## R.sub.9 is hydrogen, alkyl having 1-20 carbon atoms, mono or polyhydroxyalkyl, aryl, aralkyl, the residue of a sugar or ##STR3##is 1, 2 or 3,r' and r" each independently represent hydrogen, alkyl, monohydroxyalkyl, polyhydroxyalkyl, aryl, benzyl, the residue of amino acid or the residue of aminated sugar, or r' and r" together form a heterocycle,R.sub.1, R.sub.2, R.sub.3 and R.sub.4 represent hydrogen, lower alkyl, alkoxy having 1-4 carbon atoms, fluoroalkoxy, CF.sub.3, cycloalkyl, lower acyl, halogen, OH, amino, acylamino or alkoxy carbonyl,R.sub.5, R.sub.6 and R.sub.7 represent hydrogen or methyl or when n=1, R.sub.5 and R.sub.

Abstract: Compounds are provided which comprise a fluorocarbon terminal portion and a chiral hydrocarbon terminal portion, said terminal portions being connected by a central core, said compounds having tilted smectic mesophases or having latent tilted smectic mesophases which develop when said compounds having said latent mesophases are in admixture with said compounds having tilted smectic mesophases or said compounds having latent tilted smectic mesophases.

Abstract: Cyclohexane derivatives of formula I ##STR1## wherein R is an alkyl group which has 1-12 C atoms and in which one or two non-adjacent CH.sub.2 groups can also be replaced by O, --CO--O-- or --OCO--,A.sup.1 and A.sup.2 each independently of one another are trans-1,4-cyclohexylene or unsubstituted or fluorine-substituted 1,4-phenylene, and one of the groups A.sup.1 and A.sup.2 can also be a single bond,X is --CN, halogen, OH, --COOR.sup.1, --OOCR.sup.1, --COR.sup.1, --OR.sup.1 or R.sup.1 andR.sup.1 is an alkyl group which has 1-12 C atoms and in which one or two CH.sub.2 groups can also be replaced by O, but excluding direct links between two O atoms,with the proviso that, in the case of X=CN, A.sup.2 is trans-1,4-cyclohexylene or fluorine-substituted, 1,4-phenylene, are suitable as components of liquid-crystalline phases.

Abstract: Dispirotetradecanes of the formula I ##STR1## wherein R.sup.1 and R.sup.2 are each independently of each other alkyl containing 1 to 12 carbon atoms wherein one or more non-adjacent CH.sub.2 groups may also be replaced by --O--, --CO--, --CO--O--, --O--CO--, --O--COO-- and/or --CH.dbd.CH-- (trans), one of the radicals R.sup.1 and R.sup.2 also being H, F, Cl, Br, I, CN, NO.sub.2, NCS,A.sup.1 and A.sup.2 are each independently of each other trans-1,4-cyclohexylene wherein one or two non-adjacent CH.sub.2 groups may be replaced by --O-- and/or --S--, or 1,4-phenylene wherein one or more CH groups may also be replaced by N, with it also being possible optionally for A.sup.1 and A.sup.2 to be substituted laterally or axially by F, Cl, CN, CH.sub.3,Z.sup.1 and Z.sup.2 are each independently of each other --C--O--, --O--CO--, --CH.sub.2 CH.sub.2 --, --CH.sub.2 O--, --OCH.sub.2 -- or a single bond,m and n are each 0, 1 or 2,(m+n) 0, 1 or 2,X.sup.1, X.sup.2, X.sup.3 and X.sup.

Abstract: Cyclohexane derivatives of the formula IR.sup.1 --A.sup.1 --Z.sup.1 --A.sup.2 --R.sup.2 Iin whichR.sup.1 and R.sup.2 are each an alkyl group having 1-10 C atoms, in which one or two non-adjacent CH.sub.2 groups can also be replaced by O atoms and/or --CO-- groups and/or --CO--O-- groups and/or --CH.dbd.CH-- groups, one of the radicals R.sup.1 and R.sup.2 also being H, F, Cl, Br, CN or R.sup.3 --A.sup.3 --Z.sup.2 --,A.sup.1 is --A--, A.sup.4 --A-- or --A--A.sup.4 --,A is a trans-1,4-cyclohexylene group which can be substituted in the 2-, 3-, 5- and/or 6-position one or more times by F and/or Cl and/or Br and/or CN and/or an alkyl group or a fluorinated alkyl group which each have 1-10 C atoms and in which one or two non-adjacent CH.sub.2 groups can also be replaced by 0 atoms and/or --CO-- groups and/or --CO--O-- groups, and which may also be substituted in the 1- and/or 4-position,A.sup.2, A.sup.3 and A.sup.

Abstract: An ether compound represented by the following general formula (I), its produciton method and an insecticidal and/or acaricidal composition containing it as an active ingredient: ##STR1## wherein R.sub.1 and R.sub.2, which may be identical or different, represent a hydrogen or halogen atom or a lower alkyl, lower haloalkyl, lower alkoxyl, lower haloalkoxyl, lower alkenyl or lower alkenyloxyl group, or represent, taken together, methylenedioxy, lower alkylene, ethyleneoxy or lower alkylethyleneoxy group; R.sub.3 represents a hydrogen or fluorine atom; R.sub.4 represents a hydrogen or halogen atom or a lower alkyl, lower haloalkyl, lower alkoxyl or lower haloalkoxyl group; m represents an integer of 1 or 2; Y represents an oxygen or sulfur atom or a group represented by the formula --CH.sub.2 -- or --NH--; and Z represents a nitrogen atom or a group represented by the formula --CH.dbd., and its starting materials.

Abstract: A liquid crystalline compound of the general formula ##STR1## R and R', independently from each other, represent a linear alkyl group havng 1 to 10 carbon atoms, an alkoxymethylene group whose alkoxy moiety has 1 t 10 carbon atoms, a cyano group or a halogen atom, and n and m, independently from each other, represent 0 to 1.

Abstract: A compound of formula:CXY.dbd.CH--CR.sup.1 R.sup.2 --CH.sub.2 OCH.sub.2 Rwherein X and Y are each selected from hydrogen and halogen, R.sup.1 and R.sup.2 are each lower alkyl of up to four carbon atoms, or together with the adjacent carbon atom form a cycloalkyl group of up to six carbon atoms, and R represents a phenoxy- or benzyl-substituted phenyl group which may optionally be substituted with fluorine. The compounds are useful for combating insect pests.

Abstract: Compounds of the formula ##STR1## in which Ar is substituted or unsubstituted phenyl, naphthyl, or thienyl; Z is oxygen, sulfur, or methylene; and Ar' is 2-methyl[1,1'-biphenyl]-3-yl, 3-phenoxyphenyl, 4-fluoro-3-phenoxyphenyl, or 6-phenoxy-2-pyridyl exhibit pyrethroid-like insecticidal and acaricidal activity and are relatively harmless to aquatic fauna.

Abstract: Insecticidally active compounds of the formula (I): ##STR1## wherein R.sup.4 represents a group selected from those groups represented by R.sup.5 in insecticidally active compounds of formula: ##STR2## R.sup.3 is selected from fluoromethyl and difluoromethyl, and either (a) R.sup.1 and R.sup.2 represent alkyl of one, two, three or four carbon atoms, or (b) R.sup.1 and R.sup.2 taken together with the adjacent carbon atom form a cycloalkyl ring of four, five or six carbon atoms.

Abstract: A compound of formula (I) ##STR1## its isomers and its salts in which --R.sub.1, R.sub.3 and R.sub.4 are each indepenently hydrogen, C.sub.1 -C.sub.8 -alkyl, C.sub.1 -C.sub.8 -alkoxy, halogen, C.sub.1 -C.sub.8 -acyloxy or hydroxyl;--R' is hydrogen or C.sub.1 -C.sub.6 -alkyl;--R" is either a polyene chain or a benzene ring are useful in cosmetics and in the treatment of various dermatological and other complaints.

Abstract: Photosensitive anthracene compounds containing two anthracene rings joined by a flexible linkage, and containing a functional group as an annular substituent on one of the anthracene rings, react with polymers to form materials useful in information proceedings.

Abstract: Compounds of the Formula I: ##STR1## and pharmaceutically acceptable salts thereof are inhibitors of leukotriene biosynthesis. These compounds inhibit lipoxygenase, thus preventing the metabolism of arachidonic acid to the leukotrienes. These compounds are thus useful in the treatment of asthma, allergic disorders, inflammation, skin diseases and certain cardiovascular disorders.

Abstract: Compounds of formula I ##STR1## wherein R.sub.1 represents a group of formula ##STR2## whereby R.sub.4 and R.sub.5 are the same or different and represent hydrogen, halogen, lower alkyl, lower alkoxy or trifluoromethyl and X represents oxygen, sulfur, imino, lower alkylimino, --(CH.sub.2)--, --(S.CH.sub.2)-- or --(O.CH.sub.2)--,R.sub.2 represents hydrogen or lower alkyl,R.sub.3 represents a group of formula ##STR3## whereby R.sub.6, R.sub.7 and R.sub.8 are the same or different and represent hydrogen or alkyl or R.sub.6 together with R.sub.7 or R.sub.7 together with R.sub.8 represent --(CH.sub.2).sub.m -- wherein m is 3 to 6,R.sub.9 represents alkyl, alkenyl, trialkylsilyl or alkyl substituted by hydroxy, lower alkoxy, lower halogenalkyl or aryl andn stands for 1, 2 or 3,which possess pharmaceutical in particular antimycotic activity as well as activity against phytopathogenic fungi.

Abstract: Bicyclooctane derivatives of the formula IR.sup.1 --A.sup.1 --A.sup.2 --R.sup.2 IwhereinR.sup.1 and R.sup.2 independently of one another are each an alkyl group which has 1-12 C atoms and in which it is also possible for one or two non-adjacent CH.sub.2 groups to be replaced by O atoms and/or CO groups and/or --O13 CO groups and/or --CO--O groups and/or --CH.dbd.CH-- groups, one of the radicals R.sup.1 and R.sup.2 being also --A.sup.3 --R.sup.3,A.sup.1 is a 1,4-cyclohexylene group which is unsubstituted or substituted in the 1-position and/or 2-position and/or 3-position and/or 4-position by alkyl which has in each case 1-5 C atoms and is unsubstituted or substituted or fluorinated, and in which it is also possible for one or two non-adjacent CH.sub.2 groups to be replaced by one or two different groupings from the group --O--, --CO--, --CH.dbd.CH--, --S--, --SO-- or --SO.sub.2 --, or is substituted by F, Cl, Br, CN and/or CHO,A.sup.2 is a 1,4-bicyclo[2.2.2] octylene group,--A.sup.3 --R.sup.3 is --Cy--R.sup.

Abstract: A fluorinated compound having a formula: ##STR1## R.sub.1 is hydrogen or alkyl having up to 12 carbon atoms; R.sub.2 is selected from hydrogen, alkyl having up to 12 carbon atoms, alkoxy having up to 12 carbon atoms, ##STR2## wherein R.sub.3 is hydrogen or alkyl having up to 12 carbon atoms, and wherein R.sub.4 is hydrogen, alkyl having up to 12 carbon atoms or alkoxy having up to 12 carbon atoms; ##STR3## represents a cyclohexane ring which is in the trans configuration if 1, 4-disubstituted; ##STR4## represents a benzene ring; each of X, Y and Z independently represents hydrogen or fluorine in one or more of the lateral benzene ring positions, provided that at least one of X, Y and Z is present representing fluorine;n=0 or 1 provided that when n=0 ##STR5## and R.sub.1 is alkyl; with the proviso that in Formula I when n is 1 and ##STR6## where R.sub.1 is n-alkyl and R.sub.2 is n-alkyl or n-alkoxy the total number of carbon plus oxygen atoms in the two groups R.sub.1 and R.sub.2 is less than 10.

Abstract: A colorless liquid crystalline compound having at least one 6-membered ring and non-cyclic end groups in the molecular skeleton, said 6-membered ring containing two or more carbon atoms, at least one of which is directly bonded to a methylene group of a non-cyclic group having an alkoxy group at another end has a wide mesomorphic range. When said colorless liquid crystalline compound is mixed with a liquid crystal composition, the resulting mixture also has an enlarged mesomorphic range and in almost all cases has a reduced viscosity.

Abstract: New anisotropic compounds with a cross-polarizing substituent have the formula (1) ##STR1## The increase in .epsilon..perp. is achieved by the polarizing group X, preferably the cyano group or a halogen atom, which is not laterally on the ring, as with the known compounds, but is on the bridge, that is to say is part of the main bridge bonding rings A and B to one another. Ring A has the formula (1a) or (1b) given herein and is always cycloaliphatic, while ring B can be identical to ring A or is an aromatic ring of the formula (1c) or (1d) herein. R.sup.1 and R.sup.2 are identical or different end groups of the formula (1e) herein.The radical X on the bridge causes less widening of the molecule than a radical X on a ring, which provides comparatively higher clear points and moreover enables aromatic rings to be omitted from the anisotropic compounds.

Abstract: Novel phenols substituted by at least one 5-norbornen-2-ylmethoxymethyl group and optionally, by methyl or t-butyl groups are used as nondiscoloring antiozonants and antioxidants in chloroprene polymers.

Abstract: New interphenylene prostaglandin (PGH) analogs are prepared by a method which involves reacting a bicyclic olefin, an acetylene compound and a benzylic halide together, in the presence of a palladium(O) catalyst in a single-step synthesis. By this technique a large number of new interphenylene PGH analogs can be prepared, which are useful as inhibitors of arachidonic acid induced platelet aggregation.

Abstract: Novel liquid crystal compounds having a higher clearing point and a superior stability are provided, which are trans-4-alkyloxymethyl-1-(4'-substituted biphenylyl-4)cyclohexanes expressed by the general formula (I): ##STR1## wherein R.sub.1 and R.sub.2 each represent an alkyl group of 1 to 8 cabon atoms and n represents 0 or 1.

Abstract: This invention relates to novel compounds having pharmaceutical activity and having the general structure ##STR1## wherein the Z, R.sub.1, R.sub.2, R.sub.3, R.sub.4, n and m are defined within.

Abstract: New bicyclohexylethanes of formula IR.sup.1 --Cy--Cy--CH.sub.2 CH.sub.2 --A--(Cy).sub.n --R.sup.2 (I)wherein R.sup.1 is alkyl; R.sup.2 is alkyl, in which one or two non-adjacent CH.sub.2 groups can be replaced by O atoms, or is F, Cl, Br, CN, --COOalkyl or --O--CO-alkyl; or one of the radicals R.sup.1 and R.sup.2 can also be H; A is Cy, or 1,4-phenylene which is unsubstituted or substituted by one or two F and/or Cl atoms and/or CH.sub.3 groups or by a CN group; Cy is 1,4-cyclohexylene and n is 0 or 1; the alkyl groups in each case containing 1-10 C atoms, with the proviso that n is 1 if A is Cy and R.sup.2 is CN,can be used as constituents of dielectrics for electrooptical display elements.

Abstract: Catalysts comprising mixtures of HF and metal alkoxides and mixed metal alkoxides produce a sharply peaked alkoxylation distribution during the alkoxylation of organic materials.

Abstract: A colorless liquid crystalline compound having at least one 6-membered ring and non-cyclic end groups in the molecular skelton, said 6-membered containing two or more carbon atoms, at least one of which is directly bonded to a methylene group of a non-cyclic group having an alkoxy group at another end has a wide mesomorphic range. When said colorless liquid crystalline compound is mixed with a liquid crystal composition, the resulting mixture also has an enlarge mesomorphic range and in almost all cases has a reduced viscosity.

Abstract: Production of bis(alpha-alkylbenzyl)ethers or substituted derivatives thereof by reaction at elevated temperature of the corresponding alpha alkylbenzyl alcohols in the presence of a particular acidic clay catalyst, quenching of the catalyst and recovery of the desired ether by distillation directly from the reaction mixture containing the quenched catalyst, is disclosed. The alkyl methylbenzyl alcohol may be present as a component of an aromatic rich distilland product mixture derived from the ethyl benzene hydroperoxide epoxidation of an olefinically unsaturated compound.

Abstract: Novel liquid crystal compounds having a higher clearing point and a superior stability are provided, which are trans-4-alkyloxymethyl-1-(4'-substituted biphenylyl-4)cyclohexanes expressed by the general formula (I): ##STR1## wherein R.sub.1 and R.sub.2 each represent an alkyl group of 1 to 8 carbon atoms and n represents 0 or 1.

Abstract: Production of bis-(alpha-alkylbenzyl)ethers or substituted derivatives thereof by reaction at elevated temperature of the corresponding alpha alkylbenzyl alcohols in the presence of a mineral acid treated calcined alumina catalyst, quenching the catalyst with a basic compound and recovery of the desired ether by distillation following separation of the quenched catalyst, is disclosed. The alkyl methylbenzyl alcohol may be present as a component of an aromatic rich distill and product mixture derived from the ethyl benzene hydroperoxide epoxidation of an olefinically unsaturated compound.

Abstract: Production of bis-(alpha-alkylbenzyl)ethers or substituted derivatives thereof by reaction at elevated temperature of the corresponding alpha alkylbenzyl alcohols in the presence of an aryl sulfonic acid treated calcined alumina catalyst, quenching the catalyst with a basic compound and recovery of the desired ether by distillation following separation of the quenched catalyst, is disclosed. The alkyl methylbenzyl alcohol may be present as a component of an aromatic rich distilled product mixture derived from the ethyl benzene hydroperoxide epoxidation of an olefinically unsaturated compound.

Abstract: Preparation of bis-(alpha-alkylbenzyl)ethers or substituted derivatives thereof by reaction at elevated temperature of the corresponding alpha alkylbenzyl alcohols in the presence of an aluminum sulfate treated calcined alumina catalyst, quenching of the catalyst and recovery of the desired ether by distillation following separation of the quenched catalyst, is disclosed. The alkyl methylbenzyl alcohol may be present as a component of an aromatic rich distill and product mixture derived from the ethyl benzene hydroperoxide epoxidation of an olefinically unsaturated compound.

Abstract: The synthesis of aryl alkyl ethers from methylbenzyl alcohol and, optionally, phenol using a bis-(dithiobenzyl)nickel(II) catalyst is disclosed.

Abstract: The synthesis of aryl alkyl ethers from methylbenzyl alcohol and, optionally, phenol using a rhenium heptoxide catalyst is disclosed.

Abstract: Liquid-crystalline compounds which exhibit a liquid crystalline phase within a broader temperature range and also have a high transparent point and yet a low viscosity, and liquid-crystalline compositions containing at least one kind of the above compounds are provided, which compounds are high temperature liquid-crystalline substances consisting of 4 or 5 six-member-rings, expressed by the general formula ##STR1## wherein R and R' each represent hydrogen atom or an alkyl group or an alkoxy group, each having 1 to 10 carbon atoms; ##STR2## and n represents 0 or 1.

Abstract: A method for the preparation of hydroxyl-terminated poly(haloalkylene ethers) is disclosed wherein a catalyst system comprising a fluorinated acid and a polyvalent tin compound is utilized.

Abstract: The invention provides compounds which are particularly valuable for use as the active ingredient in sun tan lotions and creams and the like. These compounds have the general formula: ##STR1## in which Y denotes hydrogen or the radical SO.sub.3 H or a salt thereof with an organic or inorganic base, and Z denotes the radical --CH.sub.2 Br or --CHBrBr or a radical Z' which denotes the radical --CH.sub.2 I, --CH.sub.2 R, --CHR'R', --CHO or --COOR", in which R denotes --NR.sub.1 R.sub.2, --N.sup.+ R.sub.1 R.sub.2 R.sub.3, --OR.sub.4, --OCOR.sub.5, --SR.sub.6, --CN, -COOR" or --SSO.sub.3 Na, in which R.sub.1 and R.sub.2 independently denote hydrogen, C.sub.1-18 alkyl or hydroxyalkyl, or R.sub.1 and R.sub.2, together with the nitrogen atom to which they are attached, denote a heterocyclic ring, R.sub.3 denotes C.sub.1-4 alkyl or hydroxyalkyl or sulphonatopropyl, R.sub.4 denotes hydrogen, alkyl, polyoxyethylene, aryl which is optionally substituted, menthyl or dialkylaminoalkyl, R.sub.