反应详情

To a stirred mixture of 4-biphenyl carboxylic acid (10.0 g, 50.5 mmol) and 2-(piperidin-4-yl)-1H-benzimidazole (10.1 g, 50.5 mmol) in DCM (400 mL) is added 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (12.0 g, 62.7 mmol) and 4-dimethylaminopyridine (3.08 g, 25.2 mmol). After 3 h the reaction mixture is diluted with saturated aqueous NaHCO3 (200 mL) and water (100 mL). The mixture is stirred for a few minutes. The organic layer is separated, washed with water, dried over Na2SO4, filtered and concentrated under reduced pressure. Trituration with EtOAc and further washing with EtOAc gives 14.1 g of [4-(1H-benzimidazol-2-yl)piperidin-1-yl](biphenyl-4-yl)methanone.

1. customThe organic layer is separated
2. washwashed with water
3. dry with materialdried over Na2SO4
4. filtrationfiltered
5. concentrationconcentrated under reduced pressure
6. washTrituration with EtOAc and further washing with EtOAc