Conjugate organocuprate additions to α,β-unsaturated esters that have a γ-ether substitutent take place with high anti-selectivity. Potassium ester enolates can react with electrophiles to give the corresponding α-hydroxy α-alkyl, and α-azido esters with an overall antilsyn orientation of three vicinal groups relative to the initial resident chiral center.
在具有γ-醚取代基的α,β-不饱和酯中共轭
有机铜酸酯的加成反应具有很高的抗选择性。烯醇
钾酯可以与亲电试剂反应,生成相应的α-羟基α-烷基和α-
叠氮基酯,相对于最初的手性手性中心,它们的整体反lsyn取向为三个邻位基团。