Diastereoselective Reaction of Sulfoxonium Ylides, Aldehydes and Ketenes: An Approach to <i>trans</i>-γ-Lactones
作者:Mukulesh Mondal、Han-Jen Ho、Nicholas J. Peraino、Melanie A. Gary、Kraig A. Wheeler、Nessan J. Kerrigan
DOI:10.1021/jo4003213
日期:2013.5.3
In this paper, a novel approach to γ-lactones from the reaction of sulfoxonium ylides, aldehydes, and ketenes is described. The new ylide-based method provides access to γ-lactones from disubstituted ketenes, in good yields, and with good diastereoselectivity favoring the trans-diastereomer (11 examples with dr ≥ 82:18, dr up to 92:8).