Photochemical Trifluoromethylation of 1-Methylimidazoles and 1-Methylpyrroles Containing Methylthio Groups
作者:Masakazu Nishida、Hiroshi Kimoto、Shozo Fujii、Yoshio Hayakawa、Louis A. Cohen
DOI:10.1246/bcsj.64.2255
日期:1991.7
The title reaction was achieved by UV (254 nm) irradiation with CF3I. The methylthio group was introduced to increase electron density and to limit available reactive sites in the rings. Following trifluoromethylation, the methylthio groups were readily removed by hydrogenolysis (Raney Ni) to give the desired trifluoromethyl heterocycles.