Highly Selective Intramolecular Carbene Insertion into Primary C–H Bond of α-Diazoacetamides Mediated by a (<i>p</i>-Cymene)ruthenium(II) Carboxylate Complex
作者:Vanessa Kar-Yan Lo、Zhen Guo、Matthew Kwok-Wai Choi、Wing-Yiu Yu、Jie-Sheng Huang、Chi-Ming Che
DOI:10.1021/ja3006989
日期:2012.5.9
Complex [(p-cymene)Ru(η(1)-O(2)CCF(3))(2)(OH(2))] mediated transformation of α-diazoacetamides ArCH(2)N(C(CH(3))(3))C(O)CHN(2) to result in carbene insertion into the primary C-Hbond exclusively, with the γ-lactam products being isolated in up to 98% yield. This unexpected reaction is striking in view of the presence of usually more reactive sites such as secondary C-H bonds in the substrates. DFT