Configurationally and conformationally homogeneous aryl-cis-1-thiadecalins

The structure of aryl-substituted cis-1-thiadecalins formed together with 5,6-tetramethylenethiopyrylium salts in disproportionation reactions of condensed 4H-, 6H-thiopyrans and dihydrothiopyrans with CF₃COOH, as well as in the ionic reduction of the latter by the ion pair trifluoroacetic acid-triethylsilane, was studied. It was shown that the reduction proceeds stereospecifically with the formation of configurationally and conformationally homogeneous aryl-cis-1-thiadecalins possessing 2-R¹- and 2-R¹-4-R²-configurations. The configurational and conformational assignments were made by the ¹³C NMR method.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 7, pp. 898–904, July, 1984.