专利号:US-6084108-A 优先权日:1997-10-14 标 题 :Synthesis of 3-carbomethoxy-4,5-dimethylthiophene 发明人:FEVIG THOMAS L; LAU PATRICK H; PHILLIPS WENDELL G 权利人:MONSANTO CO 摘要:Fungicides having thiophene rings may be made from the intermediate compound 3-carbomethoxy-4,5-dimethylthiophene. That compound, and related compounds, may be produced by reacting an alpha mercaptoketone, e.g., 3-mercapto-2-butanone, with an acrylate, e.g., methyl-3-methoxy acrylate, in the presence of an alkoxide base, e.g., NaOMe, to form the substituted tetrahydrothiophene, followed by conversion to the aromatic thiophene with an acid treatment. The substituted tetrahydrothiophene is a novel compound.
专利号:US-10968173-B2 优先权日:2016-07-07 标题:Thiocarbonylthio compounds as chain transfer agents suitable for raft polymerization 发明人:COCHRAN ERIC W; HERNANDEZ NACU; FORRESTER MICHAEL; HOHMANN AUSTIN 权利人:UNIV IOWA STATE RES FOUND INC 摘要:The present invention relates to a compound having the structure of formula (I), wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , and R 7 are as described herein. The present invention also relates to a process for the preparation of a compound of formula (I) and to a process for the synthesis of a polymer using the compound of formula (I) through controlled free radical polymerization.
专利号:US-4246173-A 优先权日:1978-04-24 标题 :Process for preparing tetraselenofulvalenes, and conductive salts obtained therefrom 发明人:COWAN DWAINE O; BLOCH AARON N; BECHGAARD KLAUS 权利人:UNIV JOHNS HOPKINS 摘要:A multistep process for preparing tetraselenofulvalenes involving the synthesis of 1,3-diselenole-2-selones and -2-thiones from diselenocarbamates and α-haloketones followed by coupling of the selone or thione using a dechalkogenizing reagent. New highly conductive salts obtained by coupling certain tetraselenofulvalenes with acceptor compounds are also disclosed.
专利号:WO-9919321-A1 优先权日:1997-10-14 标 题 :Synthesis of 3-carbomethoxy-4,5-dimethylthiophene
专利号:EP-1023283-B1 优先权日:1997-10-14 标 题 :Synthesis of 3-carbomethoxy-4,5-dimethylthiophene
专利号:EA-003088-B1 优先权日:1997-10-14 标题:SYNTHESIS OF TIOPHENE DERIVATIVES
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