Molecular asymmetry in trans-thiacycloalkenes. 2. Barriers to interconversion of diastereomeric conformers of 2-substituted nine- to eleven-membered (E)-thiacycloalk-4-enes
Molecular asymmetry in trans-thiacycloalkenes. 2. Barriers to interconversion of diastereomeric conformers of 2-substituted nine- to eleven-membered (E)-thiacycloalk-4-enes