Sulphonyl sulphoxides synthesis

Sulphonyl phosphates, reactions of 638 Sulphonyl radicals 215 cyclization of 1099 ESR spectra of 1090-1093 formation of 1094-1098 structure of 1090-1094 thermodynamic data for 1094 Sulphonyl sulphenes 196 Sulphonyl sulphoxides alkylation of 311 synthesis of 262... 

Sulphoxides, sulphates and sulphonyl compounds have also been used as substrates in stannane-mediated reductions. Gethin and Simpkins reported the Bu3SnH-mediated removal of the tosyl group in substrate (79) in their preparation of protected thymine polyoxin C (equation 53)293. Similarly, Xu and Lu described the removal of the tosyl group in 80 under similar conditions during their synthesis of pentabromopseudilin (equation 54)294. Padwa and his associates utilised B SnH to remove the sulphone moiety in cyclopentenone (81) (equation 55)295, while Wnuk and coworkers discuss... 

Species (30) derived from RCHO and CH2=C(Li)SEt are isomerized by acid to a-thiolated ketones.Oxidation to sulphoxide and elimination gives the unsaturated ketone. Allenyl analogues of the above reagent add to epoxides to give products which can undergo further useful synthetic modification. The Shapiro method for the generation of vinyl-lithiums from sulphonyl hydrazones has been applied to a new one-pot synthesis of a-methylene-y-lactones involving elimination and carboxylation of the trianionic intermediate (31). ... 

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