Reactions of 2-(benzimidazol-2-yl) acetonitrile and its N-ethoxycarbonyl derivative with some azol-3-diazonium salts

J Slouka, V Bekárek

Index: Slouka, Jan; Bekarek, Vojtech Collection of Czechoslovak Chemical Communications, 1984 , vol. 49, # 1 p. 275 - 279

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Citation Number: 13

Abstract

Abstract Coupling of 2-(1-ethoxycarbonyl-benzimidazol-2-yl) acetonitrile (II) with 5- methylpyrazol-3-diazonium (IIIa) or indazol-3-diazonium salt (IIIb) does not give the corresponding derivatives VIIa, VIIb of pyrazolo [3, 2-c]-1, 2, 4-triazine but, instead, gives the corresponding 2-(3-azolyl)-1-oxo-1, 2-dihydro-1, 2, 4-triazino-[4, 5-a] benzimidazole-4- carbonitriles VIIIa, VIIIb. Coupling of 2-(benzimidazol-2-yl) acetonitrile (I) with the ...