New Strategic Reactions for Organic Synthesis: Catalytic Asymmetric C−H Activation α to Nitrogen as a Surrogate for the Mannich Reaction
作者:Huw M. L. Davies、Chandrasekar Venkataramani、Tore Hansen、Darrin W. Hopper
DOI:10.1021/ja0290072
日期:2003.5.1
activation reactions of methyl aryldiazoacetates are readily induced by the rhodium prolinate catalyst Rh(2)(S-DOSP)(4) (1) or the bridged prolinate catalysts Rh(2)(S-biDOSP)(2) (2a) and Rh(2)(S-biTISP)(2) (2b). The C-H activation of N-Boc-protected cyclic amines demonstrates that the donor/acceptor-substituted carbenoids display remarkable chemoselectivity, which allows for highly regioselective,