[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.
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.