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■ A Facile Synthesis of Novel 3-(1,2,4-Triazole-5-yl)methylene-2-oxo-1,2,3,4-tetrahydroquinoxalines and Their Related Compounds

Yoshihisa Kurasawa,* Kumi Suzuki, Shoko Nakamura, Kayano Moriyama, and Atsushi Takada

*School of Pharmaceutical Sciences, Kitasato University, Shirokane, Minato-ku, Tokyo 108-8641, Japan

Abstract

Various new type of triazoles, 3-(1,2,4-triazol-5-yl)methylene-2-oxo-1,2,3,4-tetrahydroquinoxalines (4-7) and related compounds (8,9), were synthesized from 3-hydrazinocarbonylmethylene-2-oxo-l,2,3,4-tetrahydroquinoxaline (1).