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Stereochemistry of the homolytic heterocyclization of alkynes with 1,2-ethanedithol into 1,4-dithianes

  • Organic Chemistry
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Bulletin of the Academy of Sciences of the USSR, Division of chemical science Aims and scope

Abstract

The homolytic heterocyclization of dialkyl- and diaryl-acetylenes with 1,2-ethanedithiol leads stereoselectively to cis-2,3-disubstituted 1,4-dithianes. The stereochemistry of the reactions is determined by a combination of homolytic trans addition at the triple bond and intramolecular homolytic cis addition at the double bond. The main product of the heterocyclization of dimethyl acetylenedicarboxylate is dimethyl 5,6-dihydro-1,4-dithiin-2,3-dicar-boxylate.

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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 8, pp. 1841–1849, August, 1991.

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Troyanskii, É.I., Strelenko, Y.A., Demchuk, D.V. et al. Stereochemistry of the homolytic heterocyclization of alkynes with 1,2-ethanedithol into 1,4-dithianes. Russ Chem Bull 40, 1629–1636 (1991). https://doi.org/10.1007/BF01172266

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  • DOI: https://doi.org/10.1007/BF01172266

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