3-(4-Benzyloxyphenyl)-2-ethoxypropanoic acid ethyl ester → Ethyl 2-ethoxy-3-(4-hydroxyphenyl)propanoate

Participants

Reaction Steps

A mixture of racemic ethyl 2-ethoxy-3-(4-benzyloxyphenyl)propionate of the formula (12a) (40 g) obtained according to the procedure described in step (iv) above, 5% Pd/C catalyst (8 g) and 1,4-dioxane (200 ml) was subjected to hydrogenation at room temperature and 50-60 psi of hydrogen pressure for a period of 8-12 h. The progress of the reaction was monitored by TLC. After completion of the reaction, the catalyst was filtered off and the solvent was removed under reduced pressure,to afford the title compound of the formula (13a) (28-29 g, 97-98%).

Provenance & Evidence