Dimethylamine → Benzamide, 5-fluoro-N,N-dimethyl-2-(trifluoromethyl)-

1-Ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (hereinafter, referred to as EDC, 2.67 g, 13.93 mmol), 1-hydroxybenzotriazole monohydrate (140 mg, 0.91 mmol), and dimethylamine (2.0 M solution in THF, 10.0 mL, 20.0 mmol) were added at room temperature to a solution of 5-fluoro-2-(trifluoromethyl)benzoic acid (1.93 g, 9.27 mmol) in dichloromethane (50 mL), and the mixture was stirred at room temperature for 5 hours. A saturated ammonium chloride aqueous solution was added to the reaction solution, followed by extraction with dichloromethane. The obtained organic layer was washed with brine and dried over anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure. The obtained residue was purified by silica gel column chromatography [elute: hexane/ethyl acetate=100/0-60/40 (gradient)] to obtain the title compound (1.32 g, yield: 61%).

1. extractionfollowed by extraction with dichloromethane
2. washThe obtained organic layer was washed with brine
3. dry with materialdried over anhydrous magnesium sulfate
4. distillationthe solvent was distilled off under reduced pressure
5. customThe obtained residue was purified by silica gel column chromatography [elute: hexane/ethyl acetate=100/0-60/40 (gradient)]

ORD record

ord-14e87ea991a5427d942885077f2fe17f

Source dataset

uspto-grants-2015_10

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US09150575B2