No abstract

No abstract

No abstract

ring closure reactions ring closure reactions O 0130 40 -042 Reaction of Perfluoro-2-methylpent-2-ene and Perfluoro-5-azanon-4ene with Aniline and Its Derivatives. -The reaction of perfluoroolefins (I) and (XII) with aniline and its derivatives leads to six-or four-membered heterocycles, e.g. (III) or (XVI). -(CHI, KI-WHAN; FURIN, GEORGII G.; BAGRYANSKAY, IRINA YU.; GATILOV, YURII V.; J.

2001 ring closure reactions ring closure reactions O 0130 -025Synthesis and Transformations of Perfluoro-2-methyl-3-azido-2pentene.-The reaction between perfluoromethylpentene (I) and sodium azide reveals the facts determining the structure of the heterocycles obtained. Interaction of (I) with sodium azide yields the azidopentene (II), stable at -20 • C. This compound decomposes at room temperature in CCl 4 , accompanied by N 2 elimination and formation of azirine (III). Reaction of (I) with sodium azide in Me-CN/Et-OH yields the stable triazoline (V). The pathway for stabilization of unstable heterocyclic systems consists in their transfer into thermodynamically more stable heterocycles by the interaction with nucleophilic reagents.-(FURIN, GEORGII G.; GATILOV, YURII V.; BAGRYANSKAY, IRINA YU.; ZHUZHGOV, EDUARD L.; J.