A FACILE AND CONVENIENT SYNTHESIS OF 1H-ISOINDOLE-1,3(2H)-DIONES

摘要

A facile synthesis of 1H-isoindole-1,3(2H)-diones (3a-h) has been developed by the reaction of the corresponding anhydrides (1a-h) with potassium cyanate (4a) or sodium thiocyanate (4b).The reactions were carried out in neutral media under reflux or under microwave irradiation without use of catalyst.Good to excellent yields of the products were obtained in high purity with very simple work-up.