[3+2] Cycloaddition reactions of polyfluoroalkanethioamides with nitrile imines, generated in situ by dehydrochlorination of the corresponding hydrazonoyl chlorides, in the presence of triethylamine, were studied. A new method was proposed on the basis of these reactions for the synthesis of 2-polyfluoroalkyl-2,3-dihydro-1,3,4-thiadiazoles.
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Signals of the predominant isomer are denoted with one asterisk (*), the signals of both diastereomers – with two asterisks (**).
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, 2017, 53(11), 1268–1276
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Mykhaylychenko, S.S., Pikun, N.V., Rusanov, E.B. et al. Synthesis of 2-polyfluoroalkyl-2,3-dihydro-1,3,4-thiadiazoles via regioselective [3+2] cycloaddition of nitrile imines to polyfluoroalkanethioamides. Chem Heterocycl Comp 53, 1268–1276 (2017). https://doi.org/10.1007/s10593-018-2199-9
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DOI: https://doi.org/10.1007/s10593-018-2199-9