Hydrochloric Acid → HCID 80212359, compound

To a solution of benzoyl isothiocyanate (20.20 g, 123.9 mmol) in acetone (350 mL) at 60° C. was added a solution of 2-fluoro-5-methoxyaniline (15.90 g, 112.6 mmol) in acetone (60 mL). The reaction mixture was refluxed for 2 hours and cooled to room temperature. The solution was concentrated to a volume of approximately 100 mL and then poured into ice water (900 mL). The resulting precipitate was collected, washed with water and hexanes, and dried at 40° C. under vacuum. It was then added into a solution of sodium hydroxide (15.00 g, 375.0 mmol) in water (300 mL) at 80° C. Heating was continued for 2 hours. After the reaction had cooled to room temperature, the pH was adjusted to 10 with concentrated hydrochloric acid. The precipitate was collected by filtration and washed with saturated aqueous sodium bicarbonate solution (2×250 mL), water (2×250 mL) and hexanes (2×250 mL) to afford the title compound as a white solid. Yield: 17.40 g, 86.9 mmol, 77%. 1H NMR (300 MHz, CDCl3) δ 3.86 (s, 3H), 6.13 (br s, 1H), 6.82 (m, 1H), 6.90 (m, 1H), 7.13 (m, 1H), 7.63 (br s, 1H).

1. temperatureThe reaction mixture was refluxed for 2 hours
2. concentrationThe solution was concentrated to a volume of approximately 100 mL
3. additionpoured into ice water (900 mL)
4. customThe resulting precipitate was collected
5. washwashed with water and hexanes
6. customdried at 40° C. under vacuum
7. temperatureHeating
8. temperatureAfter the reaction had cooled to room temperature
9. filtrationThe precipitate was collected by filtration
10. washwashed with saturated aqueous sodium bicarbonate solution (2×250 mL), water (2×250 mL) and hexanes (2×250 mL)

ORD record

ord-e0bc90a22bfb499f95045e166cbbf21c

Source dataset

uspto-grants-2015_06

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US09067934B2