Ni-Catalyzed chemoselective alcoholysis of <i>N</i>-acyloxazolidinones
作者:Pei-Qiang Huang、Hui Geng
DOI:10.1039/c7gc03534a
日期:——
(catalytic) asymmetric synthetic methodologies occupy an important position in modern organic synthesis, the catalytic cleavage of a chiralauxiliary remains underdeveloped. We report the Ni(cod)2/bipyr.-catalyzed alcoholysis of N-acyloxazolidinones to deliver esters. The reaction is broad in scope for both N-acyloxazolidinone substrates and alcohol nucleophiles, and displays good functional group tolerance
Highly Stereoselective Aldol Reaction of Chiral 3-(<i>p</i>-Tolylsulfinyl)furfural with Silyl Ketene Acetal Catalyzed by Lanthanide Triflate
作者:Yoshitsugu Arai、Tsutomu Masuda、Yukio Masaki
DOI:10.1055/s-1997-1068
日期:——
The aldol reaction of optically active 3-(p-tolylsulfinyl)furfural with silyl ketene acetal catalyzed by a lanthanide triflate proceeded smoothly to give the syn- and anti-aldol products with high diastereoselectivities in high yield.