反应详情

4-((1E,3E)-4-Methoxycarbonyl-buta-1,3-dienyl) 3-methyl-benzoic acid tert-butyl ester from Example E31.2 (1.54 g, 5.1 mmol) was dissolved in methanol (40 ml) and hydrogenated over 10% Pd/C catalyst (200 mg) for 5 h. The mixture was filtered through Celite® filter agent and the filtrate was concentrated in vacuo to yield the title compound (1.43 g, 92%).

1. filtrationThe mixture was filtered through Celite®
2. filtrationfilter agent
3. concentrationthe filtrate was concentrated in vacuo