Synthesis of some ketones via nano-nickel oxide catalyzed acylation of arylzinc reagents; strategy involving the use of mixed (methyl)(aryl)zincs

Abstract

Nano-NiO catalyzed acylation of mixed (methyl)(aryl)zincs with aromatic acyl halides in THF at roomtemperature provides a new facile route for aryl–aroyl coupling. Among NiCl 2 .L2 and NiCl 2 .L (L = monodentateand bidentate phosphine ligand) catalysts, the lower catalyst loading of NiCl 2 (dppf) may seem attractive; however,nano-NiO, being the lowest cost catalyst, is more favorable for aroylation of (methyl)(aryl)zincs. This procedure alsoprovides a supplement to Cu and Pd catalyzed acylation of diorganozincs.