GENERATION AND INTRAMOLECULAR CYCLIZATION OF DIFLUOROALKYL RADICALS VIA SINGLE-ELECTRON TRANSFER FROM THE BENZENESELENOLATE ANION - SYNTHESIS OR ALPHA,ALPHA-DINUORO-GAMMA-LACTAMS
K. Uneyama et al., GENERATION AND INTRAMOLECULAR CYCLIZATION OF DIFLUOROALKYL RADICALS VIA SINGLE-ELECTRON TRANSFER FROM THE BENZENESELENOLATE ANION - SYNTHESIS OR ALPHA,ALPHA-DINUORO-GAMMA-LACTAMS, Tetrahedron letters, 38(44), 1997, pp. 7763-7764
Several alpha,alpha-difluoro-gamma-lactams (2) were prepared by radica
l cyclization of amides (1) which were initiated by a single electron
transfer (SET) process from the benzeneselenolate anion. Deselenation
of these lactams (2) gave the corresponding alpha,alpha-difluoro-beta-
exomethylene lactams (8). (C) 1997 Elsevier Science Ltd.