Advances in Investigation of Ullmann Reaction Accelerated by Microwave Irradiation

The Ullmann reaction has been extensively applied in the synthesis of organic intermediates, especially in the formation of carbon-carbon bond, carbon-oxygen bond, carbon-sulfur bond and carbon-nitrogen bond.It has been demonstrated that microwave irradiation can obviously accelerate the Ullmann reaction and improve the yields, so the application of microwave in the Ullmann reaction has caught increasing attention in recent years.The application of microwave in the Ullmann reaction and the progresses in the formation of carbon-carbon bond, carbon-oxygen bond, carbon-sulfur bond and carbon-nitrogen bond are reviewed in this paper.