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.
A convenient and general, reagent-controlled, diastereo- and enantioselective aldol reaction of diisopinocampheylboron enolates of esters, followed by reduction, has been developed as an alternative to crotylboration-ozonolysis. This protocol was then exploited for the double diastereoselective synthesis of the C11-C17 subunit of (-)-dictyostatin.
Horikoshi, Koki; Furuichi, Akiya; Koshiji, Hiroko, Agricultural and Biological Chemistry, 1983, vol. 47, # 2, p. 435 - 436