Di-<i>tert</i>Butyl Peroxide-Promoted Sequential Methylation and Intramolecular Aromatization of Isonitriles
作者:Qiang Dai、Jin-Tao Yu、Xiaomei Feng、Yan Jiang、Haitao Yang、Jiang Cheng
DOI:10.1002/adsc.201400660
日期:2014.11.3
AbstractThe di‐tert butyl peroxide (DTBP)‐promoted sequential reaction of isonitriles is developed, leading to 6‐methylphenanthridine derivatives in moderate to excellent yields. DTBP served as both promoter and methyl source. The procedure proceeds through the addition of a methyl radical derived from the peroxide to the isonitrile followed by aromatic homolytic cyclization. It tolerates a series of functional groups, such as fluoro, chloro, acetyl, methoxycarbonyl, cyano and trifluoromethyl.magnified image