反应详情

6-[3,5-bis(trifluoromethyl)benzyl]-4-chloro-5,6,7,8,9,10-hexahydro-2-(methylthio)-5-oxopyrimido[4,5-b][1,5]diazocine(Compound of Reference Example 7; 1.50 g) was dissolved in N,N-dimethylformamide (6 mL). To this solution, sodium hydride (185 mg, 60% oil suspension) was added and the mixture was stirred at room temperature for 1 hour. Methyl iodide (0.4 mL) was then added and the mixture was further stirred at room temperature for 1 hour. The reaction mixture was diluted with ethyl acetate, was sequentially washed with water and a saturated aqueous solution of sodium chloride, and was then dried over anhydrous sodium sulfate. Following removal of the solvent, the residue was purified on a silica gel column-chromatography (ethyl acetate:hexane=1:1) to obtain 6-[3,5-bis(trifluoromethyl)benzyl]-4-chloro-5,6,7,8,9,10-hexahydro-10-methyl-2-(methylthio)-5-oxopyrimido[4,5-b][1,5]diazocine (1.36 g, 88%).

1. stirringthe mixture was further stirred at room temperature for 1 hour
2. washwas sequentially washed with water
3. dry with materiala saturated aqueous solution of sodium chloride, and was then dried over anhydrous sodium sulfate
4. customremoval of the solvent
5. customthe residue was purified on a silica gel column-chromatography (ethyl acetate:hexane=1:1)