Dichloromethane → 7-(3-methyl-2-oxotetrahydropyrimidin-1-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one

Participants

Reaction Steps

Phosgene (294 μl, 0.559 mmol) was added at 0° C. to an anhydrous methylene chloride solution (2 ml) that contained the 7-(3-methylaminopropylamino)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one (70 mg, 0.186 mmol) obtained in step B. The obtained mixture was stirred for 10 minutes. Thereafter, triethylamine (156 μl, 0.112 mmol) was added to the reaction solution, and the obtained mixture was then stirred for 30 minutes. Thereafter, water was added to the reaction solution. An organic layer was separated, and a water layer was then extracted with methylene chloride. The organic layer was mixed with the extract. The obtained mixture was washed with water and a saturated saline solution, and was then dried over anhydrous sodium sulfate. The solvent was distilled away under reduced pressure. The obtained residue was purified by amino silica gel column chromatography (methylene chloride:methanol=40:1), so as to obtain 7-(3-methyl-2-oxotetrahydropyrimidin-1-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one (10.2 mg, 14%).

Provenance & Evidence