反应详情

A solution of 4-(3-hydroxy-propyl)-benzoic acid methyl ester (11.98 g) and 1,1′-carbonyldiimidazole (9.0 g, 55.50 mmol) in CH3CN (200 mL) was stirred at room temperature for 1.5 h. Allyl bromide (20 mL) was added and the reaction mixture was heated under reflux for 20 h. The reaction mixture was cooled to room temperature and saturated aqueous NaHCO3 was added. The aqueous solution was washed with EtOAc (3×) and the organic solutions were combined, dried (MgSO4), filtered and concentrated. Purification by medium pressure chromatography (9:1 hexanes:EtOAc) provided the title compound of Preparation 4.

1. temperaturethe reaction mixture was heated
2. temperatureunder reflux for 20 h
3. washThe aqueous solution was washed with EtOAc (3×)
4. dry with materialdried (MgSO4)
5. filtrationfiltered
6. concentrationconcentrated
7. customPurification by medium pressure chromatography (9:1 hexanes:EtOAc)
8. customprovided