Conclusions
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1.
1,2-Oxathiolan-5-one-2-oxides are readily cleaved by nucleophiles (H2O, ROH, HNR2) under mild conditions at the O-CO bond only, with the formation of the β-(hydroxysulfinyl)-alkanoic acid derivatives.
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2.
2,1-Benzoxathiol-3-one-1-oxide is cleaved by alcohols at both the O-CO and the O-SO bonds to give the unstable monoesters at the carboxyl and sulfinyl groups.
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3.
Unlike 2,1-benzoxathiol-3-one-1-oxide, 1,2-oxathiolan-5-one-2-oxides on boiling with excess alcohols give β-(hydroxysulfinyl)alkanoic acid bisesters.
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For previous communication, see [1].
Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 7, pp. 1633–1640, July, 1988.
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Vasil'eva, T.P., Bystrova, V.M. & Kil'disheva, O.V. Sulfur heterocycles.. Russ Chem Bull 37, 1448–1455 (1988). https://doi.org/10.1007/BF00962760
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DOI: https://doi.org/10.1007/BF00962760