Abstract
The reaction of cis- and trans-4-acylamino-3-hydroxythiophans with thionyl chloride was studied. It was found that chlorosulfites are initially formed with retention of the configuration of the starting compound. 2-Substituted 3a,4,6,6a-tetrahydrothieno[3,4-d]oxazoline is formed from trans-4-acylamino-3-chlorosulfitothiophans by thermal reaction or in the presence of pyridine, whereas trans-4-acylamino-3-chlorothiophans are obtained from cis-4-acylamino-3-chlorosulfitothiophans; both reactions proceed with inversion of configuration.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 2, pp. 183–187, February, 1975.
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Mikhno, S.D., Filippova, T.M., Kulachkina, N.S. et al. Study of the reaction of cis- and trans-4-acylamino-3-hydroxythiophans with thionyl chloride. Chem Heterocycl Compd 11, 155–158 (1975). https://doi.org/10.1007/BF00471387
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DOI: https://doi.org/10.1007/BF00471387