described. Nitrocyclopropane carboxylates can be readily prepared through treatment of α-nitroesters and iodobenzene diacetate or α-nitro-α-diazoesters with a Rh(II) catalyst and an olefin. Reduction of the nitro group using zinc/HCl in i-PrOH affords substituted cyclopropane α-amino esters in modest to high yields (54−99%). A “one-pot” procedure involving sequential cyclopropanation and reduction is described
描述了用于制备多种系列的
环丙烷α-氨基酸的实用合成方法。硝基
环丙烷羧酸盐可以通过用Rh(II)催化剂和烯烃处理α-硝基酯和
碘代苯二
乙酸酯或α-硝基-α-重氮酸酯来轻松制备。在i -PrOH中使用
锌/ HCl还原硝基基团可中等至高收率(54-99%)提供取代的
环丙烷α-
氨基酯。描述了涉及顺序
环丙烷化和还原的“一锅法”程序。该方法也可用于制备芳基
环丙胺(三个实例)。