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Communication | Regular issue | Vol 2, No. 3, 1974, pp.335-338
Published online, 1st January, 1970
DOI: 10.3987/R-1974-03-0335
Heterocycles. IX. Synthesis of 1,5-Diphenyl-1H-imidazo[1,5-b]-s-triazoles

Kanji Meguro* and Yutaka Kuwada

*Central Research Division, Takeda Chemical Industries, Ltd., 17-85 Jusohonmachi 2-chome, Yodogawa-ku, Osaka 532-8686, Japan


Cyclization of 3-benzamidomethyl-4-phenyl-4H-1,2,4-triazoles (IVa,b) with polyphosphate ester gave 1,5-diphenyl-1H-imidazo[l,5-b]-s-triazole derivatives (Va,b).