Asymmetric epoxidation of (E)-3-trialkylsilyl-2-propen-1-ols gives the expe
cted epoxides with high enantioselectivity. Ring opening reactions of these
epoxides with organocopper reagents furnishes 1,2-diols which are readily
cleaved with Pb(OAc)(4) to afford alpha-silyl aldehydes with no detectable
loss of stereochemistry. (C) 1999 Elsevier Science Ltd. All rights reserved
.