Journal of organometallic chemistry

Asymmetric hydroformylation of unsaturated esters with PtCl (SnCl3)[(R, R)-Diop] catalyst

L Kollár, G Consiglio, P Pino

Index: Kollar, Laszlo; Consiglio, Giambattista; Pino, Piero Journal of Organometallic Chemistry, 1987 , vol. 330, p. 305 - 314

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Citation Number: 75

Abstract

Abstract Dimethyl 2-(formylmethyl) butanedioate (2e) has been synthesized regioselectively with an enantiomeric excess of more than 82% by the homogeneous catalytic hydroformylation of dimethyl itaconate (1e) with PtCl (SnCl 3)[(R, R)-DIOP] as the catalyst precursor. Under the conditions used a competitive hydrogenation to dimethyl 2- methylsuccinate (3e) takes place. This reaction occurs with an optical yield of up to 51%. ...