CAS: 598-31-2; Bromoacetone

上下游产品

4-methyleneoxetan-2-one N-Bromosuccinimide 1,3-dibromo-5,5-dimethylimidazolidine-2,4-dione diethyl etherN-acetonylpyridinium bromide 2,5-dimethyl-indolizine 6-bromo-2-methylimidazo[1,2-a]pyridine 6-iodo-2-methylimidazo[ 1,2-a]pyridine

2-溴丙烯置于sodium Hypobromide体系中,用 溶剂黄146,丙酮 作为反应溶剂,以83%的收率获得产物溴丙酮
参考文献:用于将卤化乙烯转化为α-卤代酮的温和,方便且廉价的方法.
标题:用于将卤化乙烯转化为α-卤代酮的温和,方便且廉价的方法.
摘要:用市售的次氯酸钠水溶液在乙酸/丙酮的2:5混合物中于0摄氏度下处理氯乙烯约1小时,可干净地得到相应的α-氯酮.类似地,如果将溴化乙烯在0摄氏度于2:5乙酸/丙酮作作为反应溶剂中暴露于次溴酸钠(由溴和氢氧化钠新制)中,则会制得α-溴代酮.该方法已经应用于许多氯乙烯和溴乙烯,并且转化通常以高收率进行.温和的反应条件与各种官能团兼容,包括酰胺,酯和亚胺.
DOI:10.1021/jo020739M

专利信息

专利号:US-2004018598-A1
优先权日:2000-05-30
标题 :Bio-intermediates for use in the chemical synthesis of polyketides
发明人：SANTI DANIEL; ASHLEY GARY; MYLES DAVID C
摘要:The present invention relates to compounds made by a subset of modules from one or more polyketide synthase (“PKSâ€?) genes that are used as starting material in the chemical synthesis of novel molecules, particularly naturally occurring polyketides or derivatives thereof. The biologically derived intermediates (“bio-intermediatesâ€?) generally represent particularly difficult compounds to synthesize using traditional chemical approaches due to one or more stereocenters. In one aspect of the invention, an intermediate in the synthesis of epothilone is provided that feeds into the synthetic protocol of Danishefsky and co-workers. In another aspect of the invention, intermediates in the synthesis of discodermolide are provided that feed into the synthetic protocol of Smith and co-workers. By taking advantage of the inherent stereochemical specificity of biological processes, the syntheses of key intermediates and thus the overall syntheses of compounds like epothilone and discodermolide are greaty simplified.

专利号:US-7199257-B1
优先权日:1999-06-10
标题 :Process for the synthesis of N-(4-cyano-3-trifluoromethylphenyl)-3-(4-fluorophenylsulfonyl)-2-hydroxy-2-methylpropionamide
发明人：SOEROES BELA; TUBA ZOLTAN; GALIK GYOERGY; BOR ADAM; DEMETER ADAM; TRISCHLER FERENC; HORVATH JANOS; BRLIK JANOS
权利人:RICHTER GEDEON VEGYESZET
摘要:A new process is disclosed for the synthesis of racemic or optically pure N-[4-cyano-3-trifluoro-methyl-phenyl]-3[4-fluorophenyl-sulfonyl]-2-hydroxy-2-methylpropionamide. The process includes the formation of several novel intermediates in the synthesis.

专利号:US-7091364-B2
优先权日:2002-09-24
标题:Process for the industrial synthesis of tetraesters of 5-[bis(carboxymethyl)amino]-3-carboxymethyl-4-cyano-2-thiophenecarboxylic acid, and application to the synthesis of bivalent salts of ranelic acid and their hydrates
发明人：VAYSSE-LUDOT LUCILE; LECOUVE JEAN-PIERRE; LANGLOIS PASCAL
权利人:SERVIER LAB
摘要:The process for the industrial synthesis of compounds of formula (I): n nwherein R and R′, which are the same or different, each represent linear or branched (C 1 –C 6 )alkyl.n n Application to the synthesis of bivalent salts of ranelic acid and more especially strontium ranelate and its hydrates.

专利号:EP-0454867-B1
优先权日:1989-11-17
标题:A METHOD FOR THE SYNTHESIS OF $g(a), $g(b)-UNSATURATED KETONES
发明人：TSUKASHIMA KEIICHI TAKAOKA PLA; NAKAJIMA MASASHI TAKAOKA PLANT; FUJIMARU MASAYOSHI TAKAOKA PLA; SUZUKI KENJI TAKAOKA PLANT
权利人:NIPPON SODA CO
摘要:The present invention relates to a method for the synthesis of alpha , beta -unsaturated ketones which comprises, in the method for the synthesis of alpha , beta -unsaturated ketones represented by general formula (I) (where R<1> is an aliphatic group with a side chain at the 1 position, an alicyclic group, a substituted alicyclic group, a heterocyclic group, a substituted heterocyclic group, a phenyl group or a substituted phenyl group), reacting aldehydes represented by general formula (II): R<1>CHO (where R<1> is as defined above) with alkali metal salt of acetoacetic acid represented by general formula (III) (where M<+> is an alkali metal ion), in the presence as a catalyst of 3-azabicyclo[3,2,2] nonane, a cyclic secondary amine represented by general formula (1) (where n is 3 or more and up to 5, m is 1 or more and up to 10, R<2> is an alkyl group having 1 to 10 carbon atoms and of straight chain or with side chains, an alkyl group substituted by alicyclic groups or phenyl groups, an alicyclic group which may be substituted by lower alkyl groups, or a phenyl group which may be substituted by lower alkyl groups, and an R<2> substitution position is at a carbon atom other than the two adjacent to N), a cyclic secondary amine represented by general formula (2) (where l is 1 or more and up to 6, a ring with N is a 6-membered, 7-membered or 8-membered ring, the two neighbors of N are methylene, R<3> is a lower alkyl group, its substitution position is at a carbon atom other than the two adjacent to N, and (a) is an alicyclic group or a phenyl group), or a secondary amine represented by general formula (3): CH3NHCH2R<4> (where R<4> is an aliphatic group having 5 to 17 carbon atoms and of straight chain or with side chains, an alicyclic group which may be substituted by lower alkyl groups, a phenyl group which may be substituted by lower alkyl groups, or an alkyl group substituted by phenyl groups), in a mixture solvent of water and water-insoluble organic solvent, while keeping the pH constant with mineral acid, and by adjusting the amount of water.

专利号:US-5484949-A
优先权日:1993-01-29
标题:Method for the synthesis of α β-unsaturated ketones
发明人：TSUKASHIMA KEIICHI; NAKAJIMA MASASHI; FUJIMARU MASAYOSHI; SUZUKI KENJI
权利人:NIPPON SODA CO
摘要:The present invention relates to a method for the synthesis of alpha , beta -unsaturated ketones which comprises, in the method for the synthesis of alpha , beta -unsaturated ketones represented by general formula reacting aldehydes represented by general formula R1CHO (where R1 is as defined above) with alkali metal salt of acetoacetic acid represented by general formula sence as a catalyst of 3-azabicyclo[3,2,2]nonane, a cyclic secondary amine represented by general formula (1) (1) a cyclic secondary amine represented by general formula (2) (2) (where, l is 1 or more and up to 6, a ring with N is a 6-membered, 7-membered or 8-membered ring, the two neighbors of N are methylene, R3 is a lower alkyl group, its substitution position is at a carbon atom other than two those adjacent to N, and is an alicyclic group or a phenol group), or a secondary amine represented by general formula (3) CH3NHCH2R4(3) in a mixuture solvent of water and water-insoluble organic solvent, while keeping the pH constant with mineral acid, and by adjusting an amount of water.

专利号:US-7214805-B2
优先权日:2002-09-24
标题:Process for the industrial synthesis of strontium ranelate and its hydrates
发明人：VAYSSE-LUDOT LUCILE; LECOUVE JEAN-PIERRE; LANGLOIS PASCAL
权利人:SERVIER LAB
摘要:The process for the industrial The synthesis of strontium ranelate of formula (I): n nand its hydrates.