A Stereoselective Approach to γ-Functionalized Carbonyls Exploiting the Cu-Promoted S<sub>N</sub>2′ Reaction
作者:Eric Bond、Anne-Marie Beausoleil、Jennifer Howell、Alicia Wong、Joël Robichaud
DOI:10.1021/jo102213d
日期:2011.4.15
While several efficient processes exist to effect the stereoselective creation of carbon-carbon bonds in the alpha- and beta-position of carbonyls, functionalization of the gamma-position is much more challenging. We disclose an alternative methodology exploiting the Cu-promoted S(N)2' reaction to achieve the addition of various nucleophiles upon the allylic lactones 5a-d which lead to the generation of the desired y-functionalized alpha,beta-unsaturated aldehydes 6 following in situ hydrolysis.