Conclusions
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1.
Using DMSO and MeSOPh it has been shown for the first time that O-trifluoroacetylated sulfoxides react with unactivated trisubstituted olefins to give allylsulfonium salts.
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2.
LiClO4 has been found to accelerate this ene-type reaction.
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3.
It has been found for the first time in the aliphatic series that the competition between [3, 2]-rearrangement and the Stevens rearrangement of the S-ylid generated from the allylsulfonium salt is governed by the type of counterion present, and this observation has been rationalized.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 2, pp. 365–372, February, 1989.
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Moiseenkov, A.M., Dragan, V.A. & Veselovskii, V.V. An ene-type reaction between an unactivated olefin and an “activated” sulfoxide, and some properties of the resulting sulfonium salts. Russ Chem Bull 38, 314–319 (1989). https://doi.org/10.1007/BF00953620
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DOI: https://doi.org/10.1007/BF00953620