Asymmetric synthesis of N-methyl-α-amino esters from a glyoxal derived chiral heterocycle
作者:C. Agami、F. Couty、B. Prince、C. Puchot
DOI:10.1016/s0040-4020(01)87103-9
日期:1991.1
The reaction between a chiral template derived from glyoxal with organometallic reagents leads ultimately to the optically active title compounds. The stereochemical outcome of the key-step which involves substitution of a thiophenol group depends on the organometallic: predominantly inversion with alkyl copper or complete retention with alkyl zinc halides. The stereodirecting effect of an allylic
乙二醛衍生的手性模板与有机金属试剂之间的反应最终导致光学活性的标题化合物。涉及硫酚基团取代的关键步骤的立体化学结果取决于有机金属:主要是烷基铜的转化或烷基卤化锌的完全保留。在有机锌试剂的情况下,可以证明亚胺基中间体中烯丙基羟基的立体定向作用。