反应详情

To a suspension of 60% sodium hydride (187 mg) in N,N-dimethylformamide (2 ml) was added tropine (599 mg) on an ice bath. The solution was stirred for 30 minutes while warming to room temperature. Synthesized from ethyl[5-methoxy-2-(6-methoxy-1,2,3,4-tetrahydronaphthalen-2-yl)phenyl]amine and 3,4-difluorobenzoyl chloride according to an analogous synthetic method to Preparation Example 87, a solution of N-ethyl-3,4-difluoro-N-[5-methoxy-2-(6-methoxy-1,2,3,4-tetrahydronaphthalen-2-yl)phenyl]benzamide (383 mg) in N,N-dimethylformamide (5 ml) was added the above solution followed by stirring overnight at 80° C. The reaction mixture was let to cool, then a saturated aqueous solution of sodium bicarbonate was added thereto, the solution was extracted with ethyl acetate, then sequentially washed with water and brine, dried over anhydrous potassium carbonate, and then the solvent was evaporated in vacuo. The residue was purified by NH silica gel column chromatography (chloroform-methanol system) to provide the title compound (143 mg).

1. stirringby stirring overnight at 80° C
2. temperatureto cool
3. extractionthe solution was extracted with ethyl acetate
4. washsequentially washed with water and brine
5. dry with materialdried over anhydrous potassium carbonate
6. customthe solvent was evaporated in vacuo
7. customThe residue was purified by NH silica gel column chromatography (chloroform-methanol system)