The mechanism of hydroxylation of organometallic reagents by 2-sulfonyloxaziridines
作者:Franklin A. Davis、Jia Wei、Aurelia C. Sheppard、Steven Gubernick
DOI:10.1016/s0040-4039(00)95605-3
日期:——
The hydroxylation of organometallicreagents (RM) by 2-sulfonyloxaziridines 1 is shown to involve a hemiaminal intermediate 2, whose stability is apparently related to the nucleophilicity of the hydroxylated product (ROH).
Phosphinite- and phosphite-based type I palladacycles as highly active catalysts for addition reactions of arylboronic acids with aldehydes, α,β-unsaturated ketones, α-ketoesters, and aldimines
作者:Ping He、Yong Lu、Qiao-Sheng Hu
DOI:10.1016/j.tetlet.2007.05.119
日期:2007.7
Phosphinite- and phosphite-based type I palladacycle-catalyzed additions of arylboronic acids with aldehydes, alpha,beta-unsaturated ketones, alpha-ketoesters, and aldimines are described. Our study showed that readily available phosphinite- and phosphite-based type I palladacycles could possess higher catalytic activity than phosphine-based palladacycles and were highly active, practical catalysts. Our study may pave the road for development of optically active phosphinite- and phosphite-based palladacycles for asymmetric catalysis. (C) 2007 Elsevier Ltd. All rights reserved.
DAVIS, FRANKLIN A.;WEI, JIA;SHEPPARD, AURELIA C.;GUBERNICK, STEVEN, TETRAHEDRON LETT., 28,(1987) N 43, 5115-5118
作者:DAVIS, FRANKLIN A.、WEI, JIA、SHEPPARD, AURELIA C.、GUBERNICK, STEVEN