Abstract
Perfluoro(2-methyl-2-pentene) and perfluoro(5-aza-4-nonene) react with 1,4,5,6-tetrahydropyrimi-dine-2-thiol, pyridine-2-thiol, and 1,2,4-triazole-3-thiol to afford fused heterocyclic systems, while their reactions with tetrahydrothiazole-2-thione and pyrimidine-2-thiol result in replacement of the fluorine atom at the double bond. Treatment of 3,3,3-trifluoro-1-pentafluoroethyl-2-trifluoromethyl-1-pentenyl isothiocyanate with ammonia gives N-(3,3,3-trifluoro-1-pentafluoroethyl-2-trifluoromethyl-1-propenyl)thiourea which undergoes ring closure to 4-tetrafluoroethylidene-5,5-bis(trifluoromethyl)-4,5-dihydrothiazol-2-amine. Possible cyclization paths and the effect of the 1,3(N,S)-dinucleophile nature on the direction of nucleophilic addition at the double bond are discussed.
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Translated from Zhurnal Organicheskoi Khimii, Vol. 41, No. 3, 2005, pp. 441–446.
Original Russian Text Copyright © 2005 by Furin, Zhuzhgov.
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Furin, G.G., Zhuzhgov, E.L. Synthesis of Heterocyclic Compounds Containing Perfluoroalkyl Groups. Reactions of Perfluoro(2-methyl-2-pentene) and Perfluoro(5-aza-4-nonene) with N,S-Dinucleophiles. Russ J Org Chem 41, 434–439 (2005). https://doi.org/10.1007/s11178-005-0183-1
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DOI: https://doi.org/10.1007/s11178-005-0183-1