Catalytic Asymmetric C−H Activation of Silyl Enol Ethers as an Equivalent of an Asymmetric Michael Reaction
作者:Huw M. L. Davies、Pingda Ren
DOI:10.1021/ja0035607
日期:2001.3.1
Intermolecular C–H functionalization versus cyclopropanation of electron rich 1,1-disubstituted and trisubstituted alkenes
作者:Dominic L. Ventura、Zhanjie Li、Michael G. Coleman、Huw M.L. Davies
DOI:10.1016/j.tet.2008.11.059
日期:2009.4
Rhodium(II)-catalyzed reactions of aryldiazoacetates with electron rich 1,1-disubstituted and trisubstituted alkenes were systematically studied. The regio-, diastereo- and enantioselectivity of the chemistry was profoundly influenced by the nature of the substrates and the catalyst. Conditions were developed for either selective cyclopropanation or C–Hinsertion. Both reactions can be achieved with