Selective Synthesis of cis-α,β-Unsaturated Sulfoxides and Sulfides by the Horner-Wittig Reaction with Bis(2,2,2-trifluoroethyl)phosphono Sulfoxides and Aromatic Aldehydes
Selective Synthesis of cis-α,β-Unsaturated Sulfoxides and Sulfides by the Horner-Wittig Reaction with Bis(2,2,2-trifluoroethyl)phosphono Sulfoxides and Aromatic Aldehydes
Selective Synthesis of cis-α,β-Unsaturated Sulfoxides and Sulfides by the Horner-Wittig Reaction with Bis(2,2,2-trifluoroethyl)phosphono Sulfoxides and Aromatic Aldehydes
cis-α,β-Unsaturated sulfoxides were predominantly formed in the Horner-Wittig reaction with bis(2,2,2-trifluoroethyl)phosphono sulfoxides and aromatic aldehydes, while the reaction of the corresponding sulfides showed trans- or lower cis-selectivity. The reduction of cis-α,β-unsaturated sulfoxides with tributylphosphine in carbon tetrachloride gave cis-vinyl sulfides with retention of stereochemistry.