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Communication | Regular issue | Vol 83, No. 3, 2011, pp.531-534
Published online, 8th February, 2011
DOI: 10.3987/COM-10-12113
■ Molecular Sieves Catalyzed Synthesis of Phenazine 5,10-Dioxides under Solvent-Free Conditions Using Microwave Irradiation

Saeka Takeuchi, Hiroaki Saito, Shinichi Miyairi, and Tohru Takabatake*

*College of Pharmacy, Nihon University, 7-7-1 Narashinodai, Funabashi-shi, Chiba 274-8555, Japan

Abstract

We report on the simple and quick synthesis of phenazine 5,10-dioxides in solvent-free conditions under microwave irradiation. Heating of benzofuroxan and dihydroxybenzene derivatives adsorbed on molecular sieves in a microwave oven for 30 seconds affords diverse biologically attractive phenazine 5,10-dioxides derivatives. Molecular sieves functions not only as support using microwave but also as catalyst and dehydration reagent. Synthesis of phenazine 5,10-dioxides seems to proceed on molecular sieves, not in molecular sieves.