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Communication | Regular issue | Vol 14, No. 3, 1980, pp.281-284
Published online, 1st January, 1970
DOI: 10.3987/R-1980-03-0281
A New Synthesis of Furo[2,3-b]quinoxaline and Its Ring Conversions

Yoshihisa Kurasawa* and Atsushi Takada

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


A new synthesis of 3-(N,N-dimethylaminocarbonyl)furo[2,3-b]quinoxaline was described. This compound was converted to 2-ethoxycarbonylmethylene-3-oxo-1,2,3,4-tetrahydroquinoxaline, 2-methyl-3-oxo-3,4-dihydroquinoxaline, 4-(3’-oxo-3’,4’-dihydroquinoxalin-2’-yl)pyrazolones, and pyrazolo[3,4-c]pyridazino[3,4-b]quinoxalines.