Iridium-catalyzed oxidative esterification reaction of aliphatic aldehydes and olefinic alcohols with precoordination of the double bond of alcohols to iridium
作者:Syun-ichi Kiyooka、Mahuyu Ueno、Eri Ishii
DOI:10.1016/j.tetlet.2005.04.093
日期:2005.7
A novel iridium-catalyzed oxidative esterification reaction of aliphaticaldehydes and olefinic alcohols in toluene was found under mild conditions of [IrCl(cod)]2 (5 mol %) in combination with K2CO3 (10 mol %) at rt.
发现在室温下[IrCl(cod)] 2(5 mol%)和K 2 CO 3(10 mol%)的温和条件下,一种新型的铱催化的脂肪族醛和烯烃醇在甲苯中的铱催化氧化酯化反应。
Branch-Selective Allylic C–H Carboxylation of Terminal Alkenes by Pd/sox Catalyst
A ligand-controlled branch-selective allylic C-H carboxylation through Pd catalysis is described. The developed catalytic system, which consists of Pd(OAc)(2), sulfoxide oxazoline (sox) as a ligand and benzoquinone as an oxidant, couples terminal alkenes and carboxylic acids to furnish the corresponding branched allylic esters with high regioselectivity.
[IrCl(cod)]2-catalyzed direct oxidative esterification of aldehydes with alcohols
[IrCl(cod)](2) catalyzed the oxidative esteritication of a variety of aldehydes with methanol as a solvent in combination with K2CO3 under mild conditions (rt, 12 h). The oxidative esterification reaction of aliphatic aldehydes also took place with olefinic alcohols as reagents in toluene under similar conditions. (c) 2007 Elsevier Ltd. All rights reserved.