Synthesis and Conformation of Dithiametacyclothiophenophanes and Metacyclothiophenophanes

Article abstract of DOI:10.1021/jo00008a046

Dithia<3>metacyclo<3>- -(2,3)-, -(2,4)-, -(2,5)-, and -(3,4)thiophenophanes were prepared by dithiol bis-alkylations and were oxidized with m-chloroperbenzoic acid to the corresponding tetraoxides.Pyrolysis of the tetraoxides under a reduced pressure gave the corresponding <2>metacyclo<2>thiophenophanes together with many unexpected compounds.The conformations of the obtained products are also discussed.