反应详情

(E)-3-(4-Methoxybenzenesulfonyl)-2-propylacrylic acid (1.0 g, 3.52 mmol) was dissolved in degassed methanol (15 ml) and [(S,S)-MeDuPHOS Rh (COD)]BF4 (22 mg, 3.52×10−2 mmol) was added under a stream of nitrogen. This solution was injected into the pressure vessel under nitrogen, and then the bomb was charged with hydrogen. The mixture was hydrogenated at 1035 kPa (150 psi) for 2 hour at room temperature. The methanol was removed under reduced pressure to give the title compound (1.0 g, 99% yield). E.e. was determined by chiral HPLC to be 96% [Chirocel OD; 20% IPA-80% heptane; 1 ml/min; 254 nm; major enantiomer Rf 10.91 min., minor enantiomer Rf 9.71 min.]

1. customThe methanol was removed under reduced pressure