专利号:WO-2014202765-A1 优先权日:2013-06-21 标题 :Preparation of chiral 1-methyl-2,3,4,5-1h-benzodiazepines via asymmetric reduction of alpha-substituted styrenes 发明人:STAVBER GAJ; GAZIC SMILOVIC IVANA; CLUZEAU JEROME; RICHTER FRANK 权利人:LEK PHARMACEUTICALS 摘要:The present invention provides an asymmetric and economic synthesis of 8-chloro-1-methyl-2,3,4,5-tetrahydro-1 H-benzo[d]azepine via novel intermediates applying an asymmetric enzymatic, biomimetic or catalytic reduction. The present invention also provides a novel green asymmetric catalytic reduction adapted for an aqueous medium to be applied in the synthesis of 8-chloro-1-methyl-2,3,4,5-tetrahydro-1 H-benzo[d]azepine or novel intermediates.
专利号:US-6048991-A 优先权日:1990-11-16 标题:Preparation of epoxides 发明人:HAERMELING DIETER 权利人:BASF AG 摘要:Alpha-hydroxy-epoxides of alpha-alkoxy-epoxides of the formula IV ##STR1## in which the substituents have the following meanings: R 7 , R 8 , R 9 , R 10 , R 11 are independently hydrogen, C 1 -C 20 -alkyl, C 3 -C 12 -cycloalkyl, C 4 -C 20 -cycloalkylalkyl, C 1 -C 20 -hydroxy-alkyl, a heterocyclic ring, or an aryl or C 7 -C 20 -arylalkyl group optionally substituted by C 1 -C 8 -alkyl, C 1 -C 8 -alkoxy, halogen, C 1 -C 4 -haloalkyl, C 1 -C 4 -halo-alkoxy, phenyl, phenoxy, halophenyl, halophenoxy, carboxy, C 2 -C 8 -alkoxycarbonyl, or cyano, or R 7 and R 8 or R 7 and R 9 or R 7 and R 10 or R 9 and R 10 or R 10 and R 11 together form a (CH 2 ) n group in which n is an integer from 1 to 10 and which may be optionally substituted by C 1 -C 8 -alkyl, C 1 -C 8 -alkoxy, and/or halogen, and n R 12 is hydrogen, C 1 -C 8 -alkyl, or benzyl, n provided that R 10 is not hydrogen, methyl, ethyl, propyl, or cyclohexyl when R 7 , R 8 , R 9 , or R 11 is hydrogen, that R 7 is not methyl when R 8 is methyl or phenyl and R 9 , R 10 , or R 11 is hydrogen, that R 7 is not methyl when R 8 , R 9 , R 10 , or R 11 is hydrogen and R 12 is ethyl, that R 7 is not phenyl or hexyl when R 8 , R 9 , R 10 , or R 11 is hydrogen, that R 9 is not methyl when R 7 , R 8 , R 10 , or R 11 is hydrogen, that R 10 and R 11 are not methyl when R 7 , R 8 , or R 9 is hydrogen, and that R 7 and R 10 do not together form an unsubstituted cycloalkyl when R 8 , R 9 , or R 11 is hydrogen. The epoxides of the above formula serve as intermediates for the synthesis of, inter alia, perfumes, plant protectants and polymers.
专利号:US-7605290-B2 优先权日:2006-07-26 标题 :Processes for the synthesis of O-desmethylvenlafaxine 发明人:NIDDAM-HILDESHEIM VALERIE; SHENKAR NATALIA; SHACHAN-TOV SHARONA 权利人:TEVA PHARMA 摘要:The present invention describes processes for the preparation of O-desmethylvenlafaxine and tridesmethylvenlafaxine, which may be used as an intermediate in preparing O-desmethylvenlafaxine.
专利号:US-2009069601-A1 优先权日:2006-07-26 标题:Processes for the synthesis of O-desmethylvenlafaxine 发明人:NIDDAM-HILDESHEIM VALERIE; NIDAM TAMAR; DOLITZKY BEN-ZION 权利人:NIDDAM-HILDESHEIM VALERIE; NIDAM TAMAR; DOLITZKY BEN-ZION 摘要:The present invention describes processes for the preparation of O-desmethylvenlafaxine and tridesmethylvenlafaxine, which may be used as an intermediate in preparing O-desmethylvenlafaxine.
专利号:US-2008221356-A1 优先权日:2006-07-26 标题:Processes for the synthesis of O-desmethylvenlafaxine 发明人:NIDDAM-HILDESHEIM VALERIE; NIDAM TAMAR; DOLITZKY BEN-ZION 权利人:NIDDAM-HILDESHEIM VALERIE; NIDAM TAMAR; DOLITZKY BEN-ZION 摘要:The present invention describes processes for the preparation of O-desmethylvenlafaxine and tridesmethylvenlafaxine, which may be used as an intermediate in preparing O-desmethylvenlafaxine.
专利号:US-2009137846-A1 优先权日:2006-07-26 标题 :Processes for the synthesis of O-Desmethylvenlafaxine 发明人:NIDDAM-HILDESHEIM VALERIE; NIDAM TAMAR; DOLITZKY BEN-ZION; FRENKEL GUSTAVO 权利人:NIDDAM-HILDESHEIM VALERIE; NIDAM TAMAR; DOLITZKY BEN-ZION; FRENKEL GUSTAVO 摘要:The present invention describes processes for the preparation of O-desmethylvenlafaxine and tridesmethylvenlafaxine, which may be used as an intermediate in preparing O-desmethylvenlafaxine.
参考标题:Fe(Clo4)3.H2O-Catalyzed Ritter Reaction: A Convenient Synthesis Of Amides From Esters And Nitriles 作者:Min Ji,Chengliang Feng,Bin Yan,Guibo Yin,Junqing Chen |发布日期:2018.10 摘要:An Efficient And Inexpensive Synthesis Of N-Substituted Amides From The Ritter Reaction Of Nitriles With Esters Catalyzed By Fe(Clo4)3.H2O Is Described. Fe(Clo4)3.H2O Is An Economically Efficient Catalyst For The Ritter Reaction Under Solvent-Free Conditions. Reactions Of A Range Of Esters (Benzyl, Sec-Alkyl, And Tert-Butyl Esters) With Nitriles (Primary, Secondary, Tertiary, And Aryl Nitriles) Were
合成参考文献
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