Microwave-assisted synthesis of (N-heterocyclic carbene)Ni(Cp)Cl complexes

The use of microwave heating for the synthesis of a series of (N-heterocyclic carbene)Ni(Cp)Cl complexes is presented. This protocol allows for a considerable reduction of the reaction times required using conventional heating, while affording comparable or better yields of the desired complexes. Their application as pre-catalysts in the microwave-assisted anaerobic oxidation of secondary alcohols is also discussed.