CATALYTIC TRANSFORMATIONS OF SULFUR-DIOXIDE INTO ORGANIC SULFUR-COMPOUNDS

The applications of catalytic transformations of SO2 into sulfur-conta ining organic compounds, reported in the literature, are briefly revie wed. The authors' studies in this field of chemistry, viz., the hydros ulfination of alkenes, the synthesis of gamma-oxo sulfones via hydrosu lfination, and the synthesis of aromatic sulfinic acids from diazonium salts, are summarized. Current results on the synthesis of the new su lfinato complex [Pd(SO2Ph)(Cl)dppp] and its hydrogenation to PhSO2H ar e presented, and a mechanism for the catalytic synthesis of sulfinic a cids is proposed. The structure of {[Pd(mu-C1) (dppp)](2)}(2+)(SO4)(2) (-). . 4SO(2) salt is studied by X-ray diffraction analysis.