Polysulfide Containing Chain Between Morpholine Ring And Benzothiazole Ring System Patents (Class 544/136)
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Patent number: 7897735Abstract: Provided are an electron donor-azo-electron acceptor compound having a thiol-based anchoring group, a method of synthesizing the compound, and a molecular electronic device having a molecular active layer formed of the compound. The compound for forming a molecular electronic device includes an azo compound that has a dinitrothiophene group and an aminobenzene group having thiol derivatives. The compound forms a molecular active layer in the molecular electronic devices. The molecular active layer is self-assembled on an electrode using the thiol derivative in the azo compound as an anchoring group. The molecular active layer in the molecular electronic device forms a switching device switching between an on-state and an off-state in response to a voltage applied to electrodes or a memory device storing a predetermined electric signal in response to a voltage applied to the electrodes.Type: GrantFiled: April 28, 2009Date of Patent: March 1, 2011Assignees: Electronics and Telecommunications Research Institute, Korea Research Institute of Chemical TechnologyInventors: Hyoyoung Lee, Junghyun Lee, Heeyoel Baek, Gyeong Sook Bang, Jonghyurk Park, Nak-Jin Choi, Kun Jun, Seung Rim Shin
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Patent number: 7538199Abstract: Provided are an electron donor-azo-electron acceptor compound having a thiol-based anchoring group, a method of synthesizing the compound, and a molecular electronic device having a molecular active layer formed of the compound. The compound for forming a molecular electronic device includes an azo compound that has a dinitrothiophene group and an aminobenzene group having thiol derivatives. The compound forms a molecular active layer in the molecular electronic devices. The molecular active layer is self-assembled on an electrode using the thiol derivative in the azo compound as an anchoring group. The molecular active layer in the molecular electronic device forms a switching device switching between an on-state and an off-state in response to a voltage applied to electrodes or a memory device storing a predetermined electric signal in response to a voltage applied to the electrodes.Type: GrantFiled: April 4, 2006Date of Patent: May 26, 2009Assignees: Electronics and Telecommunications Research Institute, Korea Research Institute of Chemical TechnologyInventors: Hyoyoung Lee, Junghyun Lee, Heeyoel Baek, Gyeong Sook Bang, Jonghyurk Park, Nak-Jin Choi, Kun Jun, Seung Rim Shin
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Patent number: 6815550Abstract: Provided is a process for preparing 2H-benzotriazole UV absorbers containing a perfluoroalkyl moiety at the 5-position of the benzoic ring, for example a trifluoromethyl group, which involves digitizing the perfluoroalkyl substituted o-nitroaniline using concentrated sulfuric acid plus sodium nitrite or nitrosylsulfuric acid to form the corresponding monoazobenzene intermediate via the diazonium salt intermediate which is reduced to the corresponding 5-perfluoroalkyl substituted 2H-benzotriazole UV absorber compound by conventional reduction means. Also provided is a novel one-pot, multiphase reaction for the preparation of 2(2-nitrophenylazo) substituted phenols, which are precursors for 2H-benzotriazole UV absorbers.Type: GrantFiled: December 10, 2002Date of Patent: November 9, 2004Assignee: Ciba Specialty Chemicals CorporationInventors: Mervin G. Wood, Deborah DeHessa, Joseph Suhadolnik, Andrew B. Naughton, Jerome Sanders, Jacqueline Lau, Rong Xiong, Joseph Babiarz
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Publication number: 20040102439Abstract: A halogenobenzylaminopropionic acid derivative represented by the following formula (1): 1Type: ApplicationFiled: September 29, 2003Publication date: May 27, 2004Inventors: Koichi Takayanagi, Hideki Yamada, Shin-ichi Kazayama, Shin-ya Ohnuma
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Publication number: 20040058917Abstract: Compounds of formula (I): 1Type: ApplicationFiled: August 19, 2003Publication date: March 25, 2004Inventors: Paul Vincent Fish, Jackie Diane Kendall, Gavin Alistair Whitlock
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Publication number: 20030166645Abstract: The invention relates to nitrofuran-containing compounds, compositions comprising the compounds, and methods of using the compounds and compound compositions. The compounds and compositions comprising them are useful for treating disease or disease symptoms. The invention also provides for methods of making the compounds, and methods for identifying compounds with desired biological activity.Type: ApplicationFiled: June 25, 2002Publication date: September 4, 2003Inventors: Paul J. Ala, Jacob J. Clement, Andrew S. Magee, Scott T. Moe, Manuel A. Navia, Aloka Roy
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Patent number: 6605727Abstract: Provided is a process for preparing 2H-benzotriazole UV absorbers containing a perfluoroalkyl moiety at the 5-position of the benzo ring, for example a trifluoromethyl group, which involves diazotizing the perfluoroalkyl substituted o-nitroaniline using concentrated sulfuric acid plus sodium nitrite or nitrosylsulfuric acid to form the corresponding monoazobenzene intermediate via the diazonium salt intermediate which is reduced to the corresponding 5-perfluoroalkyl substituted 2H-benzotriazole UV absorber compound by conventional reduction means. Also provided is a novel one-pot, multiphase reaction for the preparation of 2(2-nitrophenylazo) substituted phenols, which are precursors for 2H-benzotriazole UV absorbers.Type: GrantFiled: December 10, 2002Date of Patent: August 12, 2003Assignee: Ciba Specialty Chemicals CorporationInventors: Mervin G. Wood, Deborah DeHessa, Joseph Suhadolnik, Andrew B. Naughton, Jerome Sanders, Jacqueline Lau, Rong Xiong, Joseph Babiarz
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Patent number: 6353113Abstract: A process for preparing 2H-benzotriazole UV absorbers containing a perfluoroalkyl moiety at the 5-position of the benzo ring, preferably a trifluoromethyl group, involves diazotizing the perfluoroalkyl substituted o-nitroaniline using concentrated sulfuric acid plus sodium nitrite or preferably nitrosylsulfuric acid to form the corresponding monoazobenzene intermediate via the diazonium salt intermediate which is reduced to the corresponding 5-perfluoroalkyl substituted 2H-benzotriazole UV absorber compound by conventional reduction means.Type: GrantFiled: August 3, 2000Date of Patent: March 5, 2002Assignee: Ciba Specialty Chemicals CorporationInventors: Mervin G. Wood, Deborah DeHessa, Andrew B. Naughton, Jerome Sanders, Jacqueline Lau, Rong Xiong, Joseph Babiarz
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Patent number: 5633248Abstract: A compound of the formula: ##STR1## wherein Ar.sup.1 and Ar.sup.2 independently represent an optionally substituted aromatic group; P and Q independently represent a divalent aliphatic hydrocarbon group having at least 2 carbon atoms and optionally having either oxygen or sulfur in the carbon chain; R.sup.1 and R.sup.3 independently represent --CO--R, --CONH--R (R represents a hydrocarbon group or a heterocyclic group) or a hydrocarbon group; R.sup.2 and R.sup.4 independently represent hydrogen or an alkyl group; R.sup.2 and R.sup.4 independently represent hydrogen or an alkyl group; R.sup.1 and R.sup.2 or R.sup.3 and R.sup.4, taken together with the adjacent nitrogen atom, may form a nitrogen-containing heterocyclic group; and j represents 0 or 1, or a salt thereof, has excellent GnRH-receptor antagonizing activity and is useful as a prophylactic and therapeutic agent for hormone-dependent and other diseases.Type: GrantFiled: November 21, 1995Date of Patent: May 27, 1997Assignee: Takeda Chemical Industries, Ltd.Inventors: Kaneyoshi Kato, Yoshihiro Sugiura, Koichi Kato
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Patent number: 5124450Abstract: 2-(aminodithio)thiazoles and 2-(aminotrithio)thiazoles are prepared by reacting a mixture of a 2-mercaptothiazole or a dithiazolyl 2,2'-disulphide with a saturated secondary heterocyclic amine and sulphur in a reaction medium containing an inert organic solvent in the presence of an oxidant. The reaction is carried out in the present of ammonia and a catalyst containing copper, a copper compound or a cerium compound, and the oxidant is molecular oxygen or a gas containing oxygen. In particular, 2-(4-morpholinodithio)benzo-thiazole, which is technically interesting as a vulcanization accelerator, can be prepared in high product yield and virtually without by-products using the oxidant which is less expensive and can be handled with greater ease.Type: GrantFiled: October 15, 1991Date of Patent: June 23, 1992Assignee: Akzo N.V.Inventors: Manfred J. Bergfeld, Ludwig Eisenhuth
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Patent number: 4182873Abstract: Thiazolesulphenamides, useful as rubber vulcanization accelerators, are made by reaction of a 2-mercapto-thiazole or a 2,2'-dithiazolyl disulphide with ammonia or a primary or secondary amine in the presence of oxygen and a copper catalyst of specified kind.Type: GrantFiled: June 2, 1975Date of Patent: January 8, 1980Assignee: Rhone-Poulenc S.A.Inventor: Raymond Janin
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Patent number: 4058524Abstract: In a known process for preparing 2-(4-morpholinodithio)-benzothiazole using 2,2'-dithiobis(benzothiazole) along with morpholine, sulfur, an inert organic solvent such as isopropyl alcohol and an oxidizing agent, the improvement wherein a water soluble salt in combination with wet 2,2'-dithiobis(benzothiazole) is substituted for dry 2,2'-dithiobis(benzothiazole).Type: GrantFiled: January 12, 1976Date of Patent: November 15, 1977Assignee: The Goodyear Tire & Rubber CompanyInventor: Richard Leshin