反应详情

A mixture of 20 g (0.075 mol) of 1,5-bis(4-hydroxyphenyl)penta 1,4-diene-3-one of Example 16 in 200 ml of glacial acetic acid and 1.5 g of 5% Pd/C was placed on a Parr hydrogenator for 2 hours under hydrogen. This reaction was repeated and the two solutions were filtered and evaporated to give a viscous oil (18 g). This was chromatographed on a silica gel column (Woelm) and eluted with CHCl3 :MeOH (95:5). The product (7.0 g) was recovered first and then 9.0 g of the corresponding alcohol.

1. filtrationthe two solutions were filtered
2. customevaporated