105174-35-4

Upstream product

• 105174-33-2 C₂₉H₂₆N₂O₅S₃ 
• 603-35-0 triphenylphosphine 
• 105190-51-0 3-(4-Methoxy-phenyl)-7-methyl-3a-phenyl-5-(toluene-4-sulfonyl)-5,5a-dihydro-3aH-benzo[c]isothiazolo[5,4-d]isothiazole 1,1-dioxide 

Relevant academic research and scientific papers

The Wittig-type Reaction of O=C-, C=C, and N=C-Substituted Methylenetriphenylphosphoranes with N-Sulfinyl-p-toluenesulfonamide. An Intramolecular 1,3-Dipolar Cyclization of Imidoyl-conjugated Thione S-Imides

The Wittig-type reactions of N-sulfinyl-p-toluenesulfonamide with (1) O=C-, (2) C=C-, and (3) N=C-cojugated phosphorus ylides were investigated.In the reaction with (1), N-sulfinyl-p-toluenesulfonamide reacted at both the ylide and the carbonyl moiety to form TsN=C-conjugated thione S-imide, which underwent intramolecular 1,3-dipolar cycloaddition of the CSN group with the aromatic C=C bond of the tosyl group giving a structurally unique spiro-fused tricyclic adduct.The structure of the adduct was determined by means of X-ray diffraction.In the reactions with (2) and (3), 1-azadiene and sulfobetaines were obtained instead of the expected conjugated thione S-imides.