Silver-Catalyzed Aldehyde Olefination Using Siloxyalkynes
作者:Jianwei Sun、Valerie A. Keller、S. Todd Meyer、Sergey A. Kozmin
DOI:10.1002/adsc.200900835
日期:2010.3.22
describe the development of a silver‐catalyzed carbonyl olefination employing electron‐rich siloxyalkynes. This process constitutes an efficient synthesis of trisubstituted unsaturated esters, and represents an alternative to the widely utilized Horner–Wadsworth–Emmons reaction. Excellent diastereoselectivities are observed for a range of aldehydesusing either 1‐siloxy‐1‐propyne or 1‐siloxy‐1‐hexyne. This