An unexpected ring contraction of two nitroaryl pro-drugs: conversion of N-(nitroaryl)-3-chloropiperidine derivatives into N-(nitroaryl)-2-chloromethylpyrrolidines
作者:Philip J. Burke、Lai Chun Wong、William Clegg、Ross W. Harrington、Terence C. Jenkins、Richard J. Knox、Ian T. Meikle、Stephen P. Stanforth
DOI:10.1016/j.tetlet.2010.05.095
日期:2010.7
Treatment of the N-nitroaryl-3-hydroxypiperidine derivatives 12 and 13 with thionyl chloride afforded the corresponding N-aryl-2-chloromethylpyrrolidines 5 and 15 via a ring-contraction process involving an intermediate aziridinium ion.