A versatile route to β-enamino esters by acylation of lithium enamines with diethyl carbonate or benzyl chloroformate
作者:Giuseppe Bartoli、Cristina Cimarelli、Renato Dalpozzo、Gianni Palmieri
DOI:10.1016/0040-4020(95)00476-o
日期:1995.7
route to β-enamino esters 1, using accessible starting materials, was developed. Lithiated enamines are allowed to react with diethyl carbonate or benzyl chloroformate with the formation of the β-enamino esters 1a or 1b. The reaction is rather general from a wide array of ketimines and aldimines. Products included cyclic β-enamino esters 1aa-ac, very useful for the synthesis of natural products.
开发了一种使用易得的起始原料制备β-烯胺酯1的通用方法。使锂化的烯胺与碳酸二乙酯或氯甲酸苄酯反应,形成β-烯氨基酯1a或1b。来自各种各样的酮亚胺和醛亚胺的反应相当普遍。产品包括环状β-烯胺酯1aa-ac,对合成天然产物非常有用。