Organic letters

PhI (OAc) 2-mediated synthesis of 6-(trifluoromethyl) phenanthridines by oxidative cyclization of 2-isocyanobiphenyls with CF3SiMe3 under metal-free conditions

Q Wang, X Dong, T Xiao, L Zhou

Index: Wang, Qile; Dong, Xichang; Xiao, Tiebo; Zhou, Lei Organic Letters, 2013 , vol. 15, # 18 p. 4846 - 4849

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Citation Number: 101

Abstract

A mild and efficient method for the synthesis of 6-(trifluoromethyl) phenanthridines through oxidative cyclization of 2-isocyanobiphenyls with CF3SiMe3 under metal-free conditions was developed. The reaction allows the direct formation of C–CF3 bonds and rapid access to phenanthridine ring systems in one catalytic cycle.