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Paper | Regular issue | Vol 63, No. 8, 2004, pp.1783-1792
Published online, 9th July, 2004
DOI: 10.3987/COM-04-10084
■ Condensation of 4-Hydroxy-2-thiazolines with 1,2-Phenylenediamine as a Novel Effective Route to Thiazolo[3,4-a]quinoxalines

Vakhid A. Mamedov,* Ilsiyar Z. Nurkhametova, Aidar T. Gubaidullin, Igor A. Litvinov, and Sadao Tsuboi*

*Department of Environmental Chemistry and Materials, Faculty of Environmental Science and Technology, Okayama University, 2-1-1 Tsushima-naka, Okayama 700-8530, Japan

Abstract

Thiazolo[3,4-a]quinoxalin-4-ones were prepared in two steps starting from methyl phenylchloropyruvate using a new strategy for the construction of the ring system. A key step in this new method involves the reaction of 4-hydroxytetrahydrothiazoles with 1,2-phenylendiamines.