A New and Convenient Synthesis of 1,2-Diamino-3-hetarylpyrrole Derivatives.-A number of title compounds such as (III) and (VI) (41 examples) are prepared by treatment of chloronitriles (I) or (V) with hydrazides in DMF at 110-120 • C. Under basic reaction conditions using Et 3 N, these reactions proceed in a different way for nitriles (I) and (V). In the case of nitriles (I), intramolecular cyclization products (IV) are formed independently of the hydrazide. Nitriles (V) afford the same products as obtained under nonbasic conditions in comparable yields. Attempts to extend the reaction to sulfonylhydrazines result only in formation of simple alkylation products (VIII) and (IX). -(VOLOVENKO, YULIAN M.; TVERDOKHLEBOV, ANTON V.; GORULYA, ALEXANDR P.; SHISHKINA, SVETLANA V.; ZUBATYUK, ROMAN I.; SHISHKIN, OLEG V.; Eur.
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