Catalytic asymmetric Mannich reaction of glycine Schiff bases with α-amido sulfones as precursors of aliphatic imines
作者:Elier Hernando、Ramón Gómez Arrayás、Juan C. Carretero
DOI:10.1039/c2cc35160a
日期:——
A general and practical Cu(I)-Fesulphos-catalyzed Mannich reaction of glycinate Schiff bases with aliphatic imines generated in situ from alpha-amido sulfones is described. Imines with linear and branched alkyl chains, including substrates bearing functional groups, can be efficiently applied. The resulting syn-configured orthogonally protected beta-alkyl-alpha,beta-diamino acid derivatives are produced
描述了通用和实用的甘氨酸基希夫碱与α-酰胺基砜原位生成的脂族亚胺的Cu(I)-Fesulphos催化的曼尼希反应。具有直链和支链烷基链的亚胺,包括带有官能团的底物,可以有效地应用。产生的所得顺式构型的正交保护的β-烷基-α,β-二氨基酸衍生物具有优异水平的非对映体(通常syn / anti> 90:<10)和对映选择性(通常> / = 90%ee)。