反应详情

Phenylboric acid (732 mg), tetrakis(triphenylphosphine)palladium (289 mg), toluene (15 ml), 1,4-dioxane (8 ml) and a 2 mol/L aqueous solution of sodium carbonate (15 ml) were added to 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; 2.43 g). While heated, the mixture was refluxed for 5 hours under a stream of argon gas. Subsequently, the reaction mixture was diluted with ethyl acetate, was washed with a 2 mol/L aqueous solution of sodium carbonate, and was then dried over anhydrous sodium sulfate. The solvent was removed and the resulting residue was purified on a silica gel column chromatography (ethyl acetate:hexane=1:1) to obtain 6-[3,5-bis(trifluoromethyl)benzyl]-5,6,7,8,9,10-hexahydro-2-(methylthio)-5-oxo-4-phenylpyrimido[4,5-b][1,5]diazocine (2.63 g, 100%).

1. temperatureWhile heated
2. temperaturethe mixture was refluxed for 5 hours under a stream of argon gas
3. washwas washed with a 2 mol/L aqueous solution of sodium carbonate
4. dry with materialwas then dried over anhydrous sodium sulfate
5. customThe solvent was removed
6. customthe resulting residue was purified on a silica gel column chromatography (ethyl acetate:hexane=1:1)