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Cyclization of 3-Ethoxycarbonylmethyl-, 3-Cyanomethyl-, and 3-Acetylmethyl-1-amino-2-methylbenzimidazolium Salts Effected by Acetic Anhydride in the Presence of a Base.

✍ Scribed by T. A. Kuz'menko; V. V. Kuz'menko; V. A. Anisimova


Publisher
John Wiley and Sons
Year
2004
Weight
21 KB
Volume
35
Category
Article
ISSN
0931-7597

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## Abstract In this paper we report that the title compound (3) reacts with excess __N,N__‐dimethylformamide (DMF) containing two equivalents of acetic acid to afford 6‐amino‐1,2,4‐triazolo[3,4‐__f__][1,2,4]triazin‐8(7__H__)‐one (**1**). When 3‐amino‐2‐benzyl‐6‐hydrazino‐1,2,4‐triazin‐5(2__H__)‐one