反应详情

87.5 g (0.35 mol) of benzyl 4-acetoxypentanoate are dissolved in 900 ml of abs. ethanol and the solution is hydrogenated at room temperature under normal pressure with the addition of 5 g of 10% Pd/C as catalyst. Upon cessation of hydrogenation, the catalyst is removed by filtration and the filtrate is concentrated by evaporation. Distillation of the residue gives 4-acetoxypentanoic acid as a colourless oil of b.p. 110°-112° C./2.10-2 torr.

1. customUpon cessation of hydrogenation, the catalyst is removed by filtration
2. concentrationthe filtrate is concentrated by evaporation
3. distillationDistillation of the residue