LAUSR

ABSTRACT Herein, the synthesis of a novel catalytic nanosystem with high activity and easy recoverability through immobilization of Cu(II)-N-benzyl-amino-1H-tetrazole complex on magnetic chitosan (MCS-BAT-Cu(II)) is reported. The catalytic potential of MCS-BAT-Cu(II) catalyst has been assessed in C-N coupling reaction of 5-amino-1H-tetrazole with aryl halides. Various aryl iodides/bromides were successfully coupled using MCS-BAT-Cu(II) catalyst for the synthesis of 1-aryl-5-amino-1H-tetrazoles with excellent reaction yields. In addition, the magnetic catalyst was easily and effectively separated from the reaction mixture using an external magnet and reused five times without notable loss of catalytic activity.