报告的是非手性Cp x Rh III /手性羧酸与重氮丙二酸酯催化的二芳基甲胺的不对称CH烷基化反应,然后环化和脱羧得到1,4-二氢异喹啉-3(2H)-一。通过使用新开发的手性羧酸作为唯一的手性来源,通过一致的金属化-去质子化机理实现对映选择性CH裂解,仲烷基胺和未保护的伯烷基胺都经历了高对映选择性(高达98.5:1.5 er)的转化。
A cation-directed two-component cascade approach to enantioenriched pyrroloindolines
作者:Jamie R. Wolstenhulme、Alex Cavell、Matija Gredičak、Russell W. Driver、Martin D. Smith
DOI:10.1039/c4cc06683a
日期:——
A cascade approach to complex pyrroloindolines bearing all-carbon quaternary stereocentres has been developed. This two-component process uses a chiral ammonium salt to control diastereo- and enantioselectivity in the addition of isocyanides to functionalized alkenes to afford pyrroloindolines with up to three stereocentres. A mechanistic proposal involving intramolecular hydrogen bond activation of the isocyanide is described.
[EN] METHOD AND INTERMEDIATES FOR THE PREPARATION OF DERIVATIVES OF N-(1-BENZHYDRYL-AZETIDIN-3-YL)-N-PHENYL-METHYLSULPHONAMIDE<br/>[FR] PROCEDE ET INTERMEDIAIRES DE PREPARATION DE DERIVES DE N-(1-BENZHYDRYL-AZETIDIN-3-YL)-N-PHENYL-METHYLSULFONAMIDE
申请人:AVENTIS PHARMA SA
公开号:WO2006040464A1
公开(公告)日:2006-04-20
Nouveau procédé de synthèse du N-1-[bis-(4-chlorophényl)méthyl]azétidin-3-yl}-N-(3,5-difluorophényl)-méthylsulfonamide.
Synthesis of Chiral Diarylmethylamines by Cobalt‐Catalyzed Enantioselective C‐H Alkoxylation
作者:Zhen‐Kai Wang、Yong‐Jie Wu、Qi‐Jun Yao、Bing‐Feng Shi
DOI:10.1002/anie.202304706
日期:2023.7.10
A highlyenantioselective synthesis of chiral diarylmethylamines (DAMAs) via cobalt-catalyzed enantioselective C−H alkoxylation was reported. A range of chiral DAMAs were efficiently synthesized in high yields with excellent enantioselectivities (up to 90 % yield and up to 99 % ee) through desymmetrization and parallel kineticresolution. Moreover, this protocol was also compatible with the synthesis