反应详情

To a solution of 2-chloro-5-[(4-oxo-1-piperidinyl)methyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide (0.150 g, Example 83a) in methanol (3ml ) at room temperature were added ethanolamine (0.11 ml) and sodium cyanoborohydride (0.068g). The pH was adjusted to 6 by adding a 4N solution of hydrogen chloride in dioxane and the reaction stirred for 48 h. The reaction was acidified with concentrated hydrochloric acid until gas evolution ceased. The precipitate was removed by filtration and the filtrate concentrated under vacuum. The residue was partitioned between ethyl acetate and water. The aqueous layer was basified with 5% aqueous sodium hydroxide and extracted with dichloromethane. The organics were washed with brine and dried over magnesium sulfate. The crude material was purified on silica gel (5% 7N ammonia in methanol/95% dichloromethane) to afford a white foam which was dissolved in ether/methanol and treated with a 4N solution of hydrogen chloride in dioxane to give the title compound (0.135 g).

1. customThe precipitate was removed by filtration
2. concentrationthe filtrate concentrated under vacuum
3. customThe residue was partitioned between ethyl acetate and water
4. extractionextracted with dichloromethane
5. washThe organics were washed with brine
6. dry with materialdried over magnesium sulfate
7. customThe crude material was purified on silica gel (5% 7N ammonia in methanol/95% dichloromethane)
8. customto afford a white foam which