反应详情

To a suspension of 2-(1-bromoethyl)quinazolin-4(3H)-one (2.53 g) in N,N-dimethylformamide (30 mL) was added cyclopropylamine (3.46 mL), and the mixture was diluted with N,N-dimethylformamide (20 mL) and water (1 mL), and then stirred for 18 hours. The reaction solution was concentrated under reduced pressure, and to the residue was added aqueous sodium hydrogen carbonate solution, and then the mixture was extracted with chloroform. The organic layer was dried over sodium sulfate, and then concentrated under reduced pressure. The resulting residue was triturated with diisopropyl ether/ethyl acetate (20:1) to give 2-[1-(cyclopropylamino)ethyl]quinazolin-4(3H)-one [REx(33-1)] (1.71 g) as a colorless powder.

1. concentrationThe reaction solution was concentrated under reduced pressure
2. additionto the residue was added aqueous sodium hydrogen carbonate solution
3. extractionthe mixture was extracted with chloroform
4. dry with materialThe organic layer was dried over sodium sulfate
5. concentrationconcentrated under reduced pressure
6. customThe resulting residue was triturated with diisopropyl ether/ethyl acetate (20:1)