Molecular asymmetry in trans-thiacycloalkenes. 2. Barriers to interconversion of diastereomeric conformers of 2-substituted nine- to eleven-membered (E)-thiacycloalk-4-enes
Stereospecific transannular cyclization of mesocyclic homoallylic sulfides. 2. (Z)- and (E)-Thiacyclonon-4-enes. Synthesis, carbon-13 nuclear magnetic resonance, and conformation of methyl-substituted cis-1-thioniabicyclo[4.3.0]nonane salts