反应详情

A solution of 19-3 (2.3 g, 9.4 mmol) in 50 mL EtOAc was treated with 10% Pd/C (230 mg) and a hydrogen balloon. After 4 d the reaction filtered through celite, concentrated, and purified by flash chromatography (silica, 70% EtOAc/hexane), providing 19-4 as a yellow oil.

1. filtrationAfter 4 d the reaction filtered through celite,
2. concentrationconcentrated
3. custompurified by flash chromatography (silica, 70% EtOAc/hexane)