Phosphine-catalyzed synthesis of β-lactones from ketenes and chiral β-oxyaldehydes
作者:Shi Chen、Mukulesh Mondal、Matthew P. Adams、Kraig A. Wheeler、Nessan J. Kerrigan
DOI:10.1016/j.tetlet.2015.09.141
日期:2015.11
catalytic procedure for the diastereoselective synthesis of β-lactones bearing up to three stereogenic centers, from disubstituted ketenes and chiral β-oxyaldehydes. Tri-n-butylphosphine was determined to be the best catalyst with yields of up to 95% and moderate to good diastereoselectivity (dr up to 4:1) obtained in the formation of highly substituted β-lactones.