Hydrochloric Acid → 2-(Chloromethylsulfonylamino)acetophenone

2-Aminoacetophenone hydrochloride (4.56 g, 26.6 mmol) was dissolved in dichloromethane (250 mL). To the solution was added triethylamine (9.30 mL, 66.7 mmol), and the mixture was stirred at room temperature for 10 minutes. After the reaction mixture was cooled to 0° C., chloromethanesulfonyl chloride (purity 90%, 3.60 mL, 36.3 mmol) was added to the mixture, and the mixture was stirred at the same temperature for 1 hour. To the reaction mixture was added 2 mol/L hydrochloric acid, and the mixture was extracted with chloroform. The organic layer was washed with saturated aqueous sodium chloride, and then dried over anhydrous sodium sulfate, and the solvent was evaporated under reduced pressure. To the residue was added diethyl ether, and the deposited crystals were collected by filtration, and dried to obtain 2-(chloromethylsulfonylamino)acetophenone (5.00 g, 76%).

1. temperatureAfter the reaction mixture was cooled to 0° C.
2. stirringthe mixture was stirred at the same temperature for 1 hour
3. extractionthe mixture was extracted with chloroform
4. washThe organic layer was washed with saturated aqueous sodium chloride
5. dry with materialdried over anhydrous sodium sulfate
6. customthe solvent was evaporated under reduced pressure
7. additionTo the residue was added diethyl ether
8. filtrationthe deposited crystals were collected by filtration
9. customdried

ORD record

ord-4fc0210529fe469492a9a8f86787b80f

Source dataset

uspto-grants-2011_03

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US07902234B2