β‐Polynitration of 5,10,15,20‐tetrakis(2′,6′‐Dichlorophenyl)porphyrins with HNO3 and Cu(NO3)2 on Clay Using Microwave Irradiation

Abstract

An expeditious β‐polynitration of 5,10,15,20‐tetrakis(2′,6′‐dichlorophenyl)porphyrin, its Zn and Cu derivatives with montmorillonite K10‐HNO3 and montmorillonite K10‐Cu(NO3)2 (claycop) under mild conditions using microwave irradiation in 72–95% yields has been described.