Sulfonation of anisole, phenol, toluene and related alkyl and alkoxy derivatives with SO3. The influence of the solvent system on the reactivity and the sulfonic acid product distribution
作者:Harold R. W. Ansink、Hans Cerfontain
DOI:10.1002/recl.19921110404
日期:——
unhindered phenyl ethers and phenols due to complex formation between SO3 and the C(sp2)-bonded oxygen when dichloromethane is used as solvent instead of nitromethane or dioxane. This is mainly as a result of intramolecular SO3, transfer from the oxygen to the ortho carbon and subsequent conversion of the resulting σ-complex into the ortho sulfonicacid.
Sensitized photo-oxidation of thiophenolates a singlet oxygen reaction
作者:Simon J. Jongsma、Jan Cornelisse
DOI:10.1016/s0040-4039(01)81787-1
日期:1981.1
Tetraphenylporohyrin-sensitized photo-oxidation of thiophenolates leads to the corresponding benzenesulfonates. The reaction proceeds via attack of singletoxygen on the thiophenolate anion. A reaction mechanism is proposed.