A one-pot procedure for ring enlargement of α-chloromethyl<i>N</i>-containing heterocycles
作者:Lianyou Zheng、Jinbao Xiang、Xu Bai
DOI:10.1002/jhet.5570430211
日期:2006.3
A simple one-pot procedure for ringenlargement of α-chloromethyl N-containing heterocycles has been developed. By reaction of chloromethyl tetrahydroisoquinoline and its thieno analog with benzyl or allyl bromide under basic conditions, ring expansion and N-substitution were achieved simultaneously. The key to the transformation was proposed to involve the formation of aziridinium salt and subsequent