反应详情

Benzalpyruvic acid (2-oxo-4-phenyl-3-butenoic acid) prepared as in step B of Example 2 (26.4 g, 0.15 mol) was dissolved in 150 ml ethanol. The catalyst from Example 1 was then added to the unsaturated acid. The reactor was pressurized to 10 psi with hydrogen and aged with good agitation for two hours. The catalyst was then removed by filtration and the titled product isolated in quantitative yield following vacuum concentration. 1H NMR (CDCl3, DMSO-d6) δ: 3.9 (m, 4H), 7.3 (s, 5H), 10.9 (s, 1H). IR (KBr) cm-1 : 3500m, 3000m, 1725s, 1700s, 1600m, 1200s, 970m.

1. customThe catalyst was then removed by filtration