Catalytic Asymmetric Allylic C−H Activation as a Surrogate of the Asymmetric Claisen Rearrangement
作者:Huw M. L. Davies、Pingda Ren、Qihui Jin
DOI:10.1021/ol0167255
日期:2001.11.1
catalyzed decomposition of methyl aryldiazoacetates in the presence of alkenes results in allylic C-H activation by means of a rhodium-carbene induced C-H insertion. The resulting gamma,delta-unsaturated esters are equivalent to products that would be traditionally obtained from an asymmetric Claisenrearrangement. Highly regio- and enantioselective C-H insertions can be achieved, and in certain cases, good