One-Pot, Three-Component Synthesis of Chiral 4-Alkylidene-2-oxazolidinones
作者:Naoto Kojima、Tetsuaki Tanaka、Shogo Nishijima
DOI:10.1055/s-0029-1218353
日期:2009.12
A one-pot convenient access to chiral 2-oxazolidinones is described. Diethylzinc-mediated asymmetric alkynylation of aldehydes with propiolates in the presence of β-sulfonamide alcohol as the chiral ligand, followed by treatment with isocyanates, yielded chiral 4-alkylidene-2-oxazolidinones.