Triethylamine → HCID 62074998, compound

A DMF solution (4 ml) of pyrrolidine (1.93 g, 27.1 mmol), a DMF solution (4 ml) of triethylamine (3.79 g, 37.5 mmol), 1-hydroxybenzotriazole (HOBt) (3.11 g, 23.0 mmol), and 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (WSC) (3.91 g, 20.4 mmol) were added to a DMF solution (4 ml) of 4-fluoroanthranilic acid (2.0 g, 12.8 mmol) in that order. The mixture was stirred at room temperature for 14 hours. Water was added to the reaction mixture and the resulting mixture was extracted with ethyl acetate. The organic layer was washed with a saturated sodium chloride aqueous solution, and then concentrated under reduced pressure. The residue was then purified by silica gel column chromatography (dichloromethane:methanol=30:1). The purified product was concentrated under reduced pressure to thereby obtain 1.65 g of oily orange 1-(2-amino-4-fluorobenzoyl)pyrrolidine (yield: 62%).

1. extractionthe resulting mixture was extracted with ethyl acetate
2. washThe organic layer was washed with a saturated sodium chloride aqueous solution
3. concentrationconcentrated under reduced pressure
4. customThe residue was then purified by silica gel column chromatography (dichloromethane:methanol=30:1)
5. concentrationThe purified product was concentrated under reduced pressure

ORD record

ord-9d981fc72ed44686be4c3c26d24db426

Source dataset

uspto-grants-2012_09

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US08269011B2