专利号:US-9890132-B2 优先权日:2013-08-25 标 题 :Process for the preparation of anti-inflammatory aroylbenzofuran compounds 发明人:RAMANA CHEPURI VENKATA; KOMMAGALLA YADAGIRI; SRINIVAS KOLLURU 权利人:COUNCIL SCIENT IND RES; COUNCIL SCIENT IND RES 摘要:Disclosed herein an efficient process for synthesis of benzofuran analogs having anti-inflammatory activity which comprises, Ru-catalyzed branched and linear selective alkylation of aroylbenzofurans formula-I with alpha, beta unsaturated esters of formula-II via C—H activation in presence of base, additives and organic solvent at suitable temperature to give high yield of desired linear alkylated benzofuran compounds of formula-III or branched alkylated benzofuran compounds of formula-IV or mixture thereof.
专利号:US-7060471-B2 优先权日:2003-03-12 标题 :Stereoselective chemoenzymatic process for the preparation of optically enriched phenylglycidates as precursors of taxol side chain 发明人:ANAND NAVEEN; KAPOOR MUNISH; TANEJA SUBHASH CHANDRA; KOUL SURRINDER; SHARMA RATTAN LAL; QAZI GHULAM NABI 权利人:COUNCIL SCIENT IND RES 摘要:The present invention relates to a novel and efficient chemoenzymatic process of preparation of optically active trans alkyl phenylglycidates. The invention particularly discloses a novel process for the chemoenzymatic synthesis of two enantiomers of trans alkyl phenylglycidate i.e. alkyl(2S,3R)-phenylglycidate and alkyl(2R,3S)-phenylglycidate of formulae 7 and 8 respectively
专利号:US-8541598-B2 优先权日:2007-08-21 标 题 :Biodegradable solvents for the chemical industry 发明人:GATHERGOOD NICK; MORRISSEY SAIBH; PEGOT BRUCE 权利人:GATHERGOOD NICK; MORRISSEY SAIBH; PEGOT BRUCE; UNIV DUBLIN CITY 摘要:This invention relates to ionic liquid (ILs) solvents for chemical synthesis based on an alkyl-imidazolium cation core containing ionic liquids which have enhanced biodegradability and reduced toxicity relative to existing imidazolium bases ILs such as 1-butyl-3-methylimidazolium (bmmim) salts. Many of the described ILs produce a score of over 60% biodegradability over 28 days in a biodegradability test such as the Sturm Test, the Closed Bottle Test (OECD 301D) or the CO 2 Headspace Test (ISO 14593). The ILs of the invention comprise an alkyl substituted imidazolium cationic core having a —Câ•?OX— side chain in the 3-position of the imidazole ring, wherein Xâ•?O, NH, N or S and an associated counteranion characterized in that the —Câ•?OX side chain comprises at least one ether linkage. The biodegradable and non-toxic IL may be used as green solvents for the chemical, pharmaceutical, biofuel and biomass industries. The ILs of the invention are particularly useful in hydrogenation, pericyclic ad metathesis reactions.
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