Photocycloaddition of N-alkoxycarbonylbenzoxazole-2-thiones to alkenes: isolation of stable aminothietanes
Abstract
N-Alkoxy- and N-aryloxycarbonylbenzoxazole-2-thiones 1 undergo photocycloaddition with alkenes 2 in a regiospecific manner to yield stable spirocyclic aminothietanes 3–4, 7–9 and 11 in fair to high yields.