SURFACE-ACTIVE PHOSPHINES FOR CATALYSIS UNDER 2-PHASE REACTION CONDITIONS - P(MENTHYL)[(CH2)(8)C6H4-P-SO3NA](2) AND THE HYDROFORMYLATION OFSTYRENE

The novel optically active phosphine, bis(8-phenyloctyl) (Menth = 1R, 3R, 4S (-) methly) phosphine, (M sized and sulfonated under mild condi tions to yield the corresponding sulfonated phenyl) octyl)(Menth) phos phine. The water soluble phosphine is used to generate an the hydrofor mylation of styrene. The catalyst shows high catalytic activity, but v irtually no optical induction. Normal to branch ratios for the hydrofo rmylation of styrene are in the range 0.35 to 0.5. The catalytic data with TPPTS is given for comparison. TPPTS yields catalysts that are le ss active under two phase reaction conditions and slightly less select ive for formation of 2-phenylpropanal.