3-氯苯乙烯置于magnesium(II) Chloride Hexahydrate,氧气,Lithium Perchlorate,Manganese(Ll) Chloride体系中,用 二氯甲烷,丙酮 用作溶剂,化学反应 40.0H,以89%的收率获得2,3'-二氯苯乙酮 参考文献:The Mn-Catalyzed Paired Electrochemical Facile Oxychlorination Of Styrenes Via The Oxygen Reduction Reaction 标题:The Mn-Catalyzed Paired Electrochemical Facile Oxychlorination Of Styrenes Via The Oxygen Reduction Reaction 摘要:报告了一种通过锰催化剂以可控模式生成氯自由基的电化学方法,并使用廉价的mgcl2作为氯源. Doi:10.1039/c9Cc06746A
专利号:US-7220870-B2 优先权日:1995-03-14 标 题:Hydrolytic kinetic resolution of cyclic substrates 发明人:JACOBSEN ERIC N; TOKUNAGA MAKOTO; LARROW JAY F 权利人:HARVARD COLLEGE 摘要:The present invention relates to a process for stereoselective or regioselective chemical synthesis which generally comprises reacting a nucleophile and a chiral or prochiral cyclic substrate in the presence of a non-racemic, chiral catalyst to produce a stereoisomerically- and/or regioisomerically-enriched product. The present invention also relates to hydrolytic kinetic resolutions of racemic and diastereomeric mixtures of epoxides.
专利号:WO-9910310-A1 优先权日:1997-08-29 标 题:Process for producing diphenylethers and esters 发明人:LOURENS GERHARDUS JOHANNES 权利人:DOW CHEMICAL CO 摘要:An improved synthesis of diphenylethers, and in particular, the bacteriostat 2,4,4'-trichloro-2'-hydroxydiphenylether, is described wherein 2'-acetyl-2,4,4'-trichlorodiphenylether is oxidised under Baeyer-Villiger conditions to produce 2'-acetoxy-2,4,4'-trichlorodiphenylether in near quantitative yield. Best oxidative conditions include the use of anhydrous permaleic acid produced in situ. The ester is purified readily by simple recrystallization, as no dibenzofurans and only minor amounts of byproducts are formed in the process. The ester is converted into the desired halogenated phenolic diphenylether, 2,4,4'-trichloro-2'-hydroxydiphenylether, by hydrolysis or transesterification. The final product is purified to a high degree by vacuum distillation and crystallization to meet current purity standards for approved applications.
专利号:US-2004219658-A1 优先权日:2001-06-25 标 题 :Process for producing optically active (r)-2-chloro-1-(3'-chlorophenly) ethanol 发明人:SHIMIZU SAKAYU; KATAOKA MICHIHIKO; KIZAKI NORIYUKI; YASOHARA YOSHIHIKO 权利人:SHIMIZU SAKAYU; KATAOKA MICHIHIKO; KIZAKI NORIYUKI; YASOHARA YOSHIHIKO 摘要:The present invention discloses a process for efficiently producing, on an industrial scale, optically active (R)-2-chloro-1-(3′-chlorophenyl)ethanol which is useful as a raw material for the synthesis of medicines, agricultural chemicals, etc. n The process includes allowing cells of a microorganism or a material prepared by treating the cells of the microorganism to act on 2-chloro-1-(3′-chlorophenyl)ethanone to produce (R)-2-chloro-1-(3′-chlorophenyl)ethanol, the microorganism being capable of stereoselectively reducing 2-chloro-1-(3′-chlorophenyl)ethanone to yield (R)-2-chloro-1-(3′-chlorophenyl)ethanol.
专利号:DE-102006056526-A1 优先权日:2006-11-30 标题:Process for the stereoselective synthesis of chiral epoxides by ADH reduction of alpha-leaving group-substituted ketones and cyclization
专利号:CN-114539040-A 优先权日:2022-03-01 标题:A kind of method for photocatalytic synthesis of α-halogenated ketone compounds
专利号:US-10072009-B2 优先权日:2014-10-21 标 题 :N-substituted beta-carbolinium compounds as potent P-glycoprotein inducers 发明人:BHARATE SANDIP; KUMAR AJAY; MANDA SUDHAKAR; JOSHI PRASHANT; BHARATE SONALI; VISHWAKARMA RAM 权利人:COUNCIL SCIENT IND RES 摘要:The present invention relates to the N-substituted beta-carbolinium compounds of general formula A and formulae I and II wherein, R 1 and R 2 groups are selected from halogens or trifluoromethyl; R 3 group is selected from hydrogen or methyl; Ar is selected from aryl and heteroaryl, X is selected from halogens; and R 1 and R 2 groups may be attached to any position on ring E. The present invention particularly relates to synthesis and p-glycoprotein induction activity of the N-substituted beta-carbolinium compounds. In addition, the invention relates to methods of using compounds for treating or preventing Alzheimer's disease.
参考标题:Purification And Characterization Of An Nadh-Dependent Alcohol Dehydrogenase FromCandida MarisFor The Synthesis Of Optically Active 1-(Pyridyl)Ethanol Derivatives 作者:Shigeru Kawano,Miho Yano,Junzo Hasegawa,Yoshihiko Yasohara |发布日期:2011.6.23 摘要:A Novel (R)-Specific Alcohol Dehydrogenase (Afpdh) Produced By Candida Maris Ifo10003 Was Purified To Homogeneity By Ammonium Sulfate Fractionation, Deae-Toyopearl, And Phenyl-Toyopearl, And Characterized. The Relative Molecular Mass Of The Native Enzyme Was Found To Be 59,900 By Gel Filtration, And That Of The Subunit Was Estimated To Be 28,900 On Sds-Polyacrylamide Gel Electrophoresis. These Results Suggest That The Enzyme Is A Homodimer. It Required Nadh As A Cofactor And Reduced Various Kinds Of Carbonyl Compounds, Including Ketones And Aldehydes. Afpdh Reduced Acetylpyridine Derivatives, β-Keto Esters, And Some Ketone Compounds With High Enantioselectivity. This Is The First Report Of An Nadh-Dependent, Highly Enantioselective (R)-Specific Alcohol Dehydrogenase Isolated From A Yeast. Afpdh Is A Very Useful Enzyme For The Preparation Of Various Kinds Of Chiral Alcohols.
合成参考文献
摘要:De Wildeman, S.; Sereinig, N., Science of Synthesis: Stereoselective Synthesis, (2011) 2, 160. 摘要:Matsunami, A.; Kayaki, Y.; Ikariya, T., Science of Synthesis: Catalytic Reduction in Organic Synthesis, (2018) 2, 66.