Triethylamine → 3-Iodo-N-methoxy-N-methylbenzamide

3-Iodobenzoic acid (3.01 g, 12.1 mmol) was dissolved in DMF (30 mL), and HOBt.H2O (2.45 g, 18.1 mmol), WSC.HCl (3.02 g, 15.8 mmol), N,O-dimethylhydroxylamine hydrochloride (1.30 g, 13.3 mmol), and triethylamine (1.86 mL, 14.6 mmol) were added thereto, and then, the mixture was stirred at room temperature for 4 hours. Water (60 mL) was added to the mixture, and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated brine, a saturated aqueous sodium hydrogen carbonate solution, and saturated brine, and then, dried over anhydrous sodium sulfate. Then, the solvent was evaporated under reduced pressure, and the obtained residue was purified by silica gel flash column chromatography (ethyl acetate/n-heptane=100/0 to 50/50) to give 3-iodo-N-methoxy-N-methylbenzamide (3.23 g, yield: 82%).

1. extractionthe mixture was extracted with ethyl acetate
2. washThe organic layer was washed with saturated brine
3. dry with materiala saturated aqueous sodium hydrogen carbonate solution, and saturated brine, and then, dried over anhydrous sodium sulfate
4. customThen, the solvent was evaporated under reduced pressure
5. customthe obtained residue was purified by silica gel flash column chromatography (ethyl acetate/n-heptane=100/0 to 50/50)

ORD record

ord-ae54812f565148b6986694e245b69e66

Source dataset

uspto-grants-2012_09

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US08273738B2