Efficient microwave-assisted synthesis of bisimides

A versatile, fast and efficient microwave-assisted synthetic procedure for the preparation of bisimides is described.This procedure can be applied employing either diamines (aliphatic or aromatic) or dianhydrides as reagents.The use of ionic liquids as catalysts increased the rate and yields of these reactions significantly.The products were obtained in good to excellent yields within 10 minutes of irradiation, and with high purity after a simple work-up.