Water → 1-(Methylsulfonyl)-5-nitroindoline

To a solution of 300 mg (1.83 mmol) of 5-nitroindoline in 20 mL of dichloromethane were added 141 μL (2.74 mmol) of methanesulfonyl chloride and 382 μL (2.74 mmol) of triethylamine, and the mixture was stirred for 2 hours at room temperature. 141 μL (2.74 mmol) of methanesulfonyl chloride and 255 μL (1.83 mmol) of triethylamine were further added to the reaction mixture, and the mixture was stirred for 2 hours at room temperature. Then, water was added to the reaction mixture and the mixture was extracted with dichloromethane. The organic layer was washed with saturated saline solution and dried over with anhydrous sodium sulfate. The solvent was removed under reduced pressure and the residue was treated with diethyl ether, then, the precipitates were collected by filtration to give 410 mg (92%) of the title compound.

1. stirringthe mixture was stirred for 2 hours at room temperature
2. extractionthe mixture was extracted with dichloromethane
3. washThe organic layer was washed with saturated saline solution
4. dry with materialdried over with anhydrous sodium sulfate
5. customThe solvent was removed under reduced pressure
6. additionthe residue was treated with diethyl ether
7. filtrationthe precipitates were collected by filtration

ORD-Eintrag

ord-284bab2d2c0d428dac7a881f3fa0360d

Quelldatensatz

uspto-grants-2014_12

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US08901315B2