反应详情

4-(2-Methoxycarbonyl-vinyl)-bicyclo[2.2.2]octane-1-carboxylic acid benzyl ester (XX, Example 95, 35 g, 106.6 mmol) is dissolved in ethyl alcohol/water (9/1, 300 ml) and is placed in a Porter pressure bottle. Palladium on carbon (10%, 5 g) is added and the mixture is hydrogenated (65 psi) for 48 hr. The reaction mixture is filtered through a pad of celite and the combined filtrates were concentrated to give the title compound, NMR (400 MHz, CDCl3) δ 3.58, 2.18, 1.74, 1.44 and 1.38.

1. customfor 48 hr
2. filtrationThe reaction mixture is filtered through a pad of celite
3. concentrationthe combined filtrates were concentrated