Synthesis of Carbocyclic and Heterocyclic Fused Quinolines by Cascade Radical Annulations of Unsaturated <i>N</i>-Aryl Thiocarbamates, Thioamides, and Thioureas
作者:Wu Du、Dennis P. Curran
DOI:10.1021/ol0344319
日期:2003.5.1
[GRAPHICS]Tandem radical cyclizations of suitably substituted N-aryl thiocarbamates, thioamides, and thioureas are induced by exposure to tris(trimethylsilyl)silane (TTMSH) and UV light and provide furoquinolines, isofuroquinolines, cyclopentaquinolines, indoloquinollnes, and related ring systems. The intermediacy of an alpha-thioalkylamino radical, which is the synthetic equivalent of an imidoyl radical, is invoked.