Palladium Catalysis: Dependence of the Efficiency of C−C Bond Formation on Carboxylate Ligand and Alkali Metal Carboxylate or Carboxylic Acid Additive. Part A: the C( sp ²)−C( sp ²), C( sp ²)−C( sp ³) and C( sp ³)−C( sp ³) Bonds

Abstract

A variety of Pd‐catalyzed reactions are carried out with palladium carboxylates in the presence of carboxylic acids and/or alkali metal carboxylates. This review is Part A of three reviews highlighting the dependence of the efficiency of the formation of the different C−C bonds on the nature of the carboxylate unit. Part A concerns inter‐ and intramolecular reactions leading to the formation of a C( sp ²)−C( sp ²), C( sp ²)−C( sp ³) or C( sp ³)−C( sp ³) bond. The variety of procedures and additives is presented as well as the reaction mechanisms with, as far as possible, personal comments.