Chemical shift nonequivalence of diastereotopic groups in sulfonium salts

✍ Scribed by Kiyosi Kondo; Kurt Mislow

• Publisher: Elsevier Science
• Year: 1967
• Tongue: French
• Weight: 162 KB
• Volume: 8
• Category: Article
• ISSN: 0040-4039
• DOI: 10.1016/s0040-4039(00)90695-6

✦ Synopsis

The present account is prompted by two recent communications (1,2) reporting on the detection of diastereotopic protons (3) in sulfonium ylids by n.m.r. Diastereotopic protons have previously been observed in a number of suitably substituted sulfur compounds: sulfites (4), sulfinates (5), sulfinamides (h), sulfide-borane adducts (7), and sulfoxides (7,8). Sulfonium salts are of considerable interest in current stereochemical studies (9) and in