A Convenient One-Pot Synthesis of Spirocyclic Pyrido[1,2-<i>a</i>]indole Derivatives from 3-(2-Bromoethyl)indole
作者:Robert Flowers II、Jingliang Jiao、Yang Zhang
DOI:10.1055/s-2006-950252
日期:——
A convenient one-pot approach for the synthesis of spirocyclic pyrido[1,2-a]indole derivatives is described. The method involves treatment of 1,3-diketones and 1,3-ketoesters with base to generate dianions, which react with 3-(2-bromoethyl)indole to construct a spirocyclopropyl ring and an N-heterocyclic ring sequentially in moderate to very good yields.