An Ultrasound and Microwave Assisted Benign Synthesis of 2-Amino-4-Aryl-7-Hydroxy-4h-Chromene-3-Carbonitriles Over Harsh Conventional Method

摘要

An Ultrasound and Microwave assisted fast, simple and environmentally benign method for the synthesis of substituted 2-Amino-4-Aryl-7-Hydroxy-4h-Chromene-3-Carbonitriles from resorcinol, malononitrile and aromatic aldehydes by using Rochelle salt as a catalyst in alcoholic media by maintaining temperature and frequency of ultrasonicator as well as by Microwave irradiation. This ultrasound and microwave assisted synthesis have several advantages over harsh conventional method and provides a green and improved pathway, simple work up procedure and excellent yields.