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- W1973365156 abstract "Styrene was hydroformylated in the presence of platinum containing in situ catalysts formed in the reaction of PtCl2(diphosphine), tin(II)chloride, and tin(II)triflate (or silver triflate). The reaction resulted in both linear and branched formyl regioisomers, achiral 3-phenyl-propanal and chiral 2-phenyl-propanal, respectively. Using the optically active Pt-bdpp (bdpp = (2S,4S)-2,4-bis(diphenylphosphino)pentane) systems high ee-s were achieved, which were decreased substantially in the presence of triflate anion. The activity of the catalyst was reduced by the addition of silver triflate and its application in excess resulted in the formation of inactive systems. However, regioselectivity towards chiral branched aldehyde (2-phenylpropanal) was increased both with achiral and chiral bidentate phosphine-containing catalysts upon addition of silver triflate. In the presence of platinum-phosphine-tin(II)chloride in situ systems containing tin(II)triflate consecutive hydrogenation of the aldehyde regioisomers formed in hydroformylation of styrene took also place." @default.
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- W1973365156 date "1997-08-01" @default.
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- W1973365156 title "The effect of triflate additives in platinum-catalyzed enantioselective hydroformylation" @default.
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- W1973365156 doi "https://doi.org/10.1016/s1381-1169(97)00021-6" @default.
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