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.
Rhodium catalyzed three-component reaction of aldehyde, boronic acid, and sulfonamides: a facile one-pot synthesis of diarylmethylamines
Rhodium(I) catalyzedthree-component reaction for the one pot synthesis of diarylmethylamines in excellent yields were achieved by using aldehyde, boronic acid, and sulfonamides. The use of hyper-valent bis(trifluoroacetoxy)iodobenzene as an additive plays a key role in the chemo selective formation of amines instead of alcohols.