Lewis acid activated and catalyzed cyclizations of aminyl radicals from N-hydroxypyridine-2-thione carbamates
作者:Martin Newcomb、Chau Ha
DOI:10.1016/0040-4039(91)80201-g
日期:1991.11
A variety of Lewis acids promote 5-exo cyclizations of delta,epsilon-unsaturated aminyl radicals produced from N-hydroxypyridine-2-thione carbamates under very mild conditions; catalysis was demonstrated in several cases.