Sodium Hydroxide → 4-Chloro-5-methoxy-2-methylaniline

Temperature

80 °C

To a suspension of N-(4-chloro-5-methoxy-2-methylphenyl)-2,2,2-trifluoroacetamide (7.02 g) in ethanol (50 mL) was added 2 mol/L aqueous sodium hydroxide solution at room temperature, and the mixture was stirred at external temperature of 80° C. for 30 minutes. The reaction mixture was left to be cooled and concentrated under reduced pressure. To the residue was added water, and the mixture was stirred for 1 hour. The precipitate was collected by filtration, washed with water, and then dried under reduced pressure to obtain the title compound (4.15 g). 1H-NMR (CDCl3) δ ppm: 2.08 (3H, s), 3.40-3.82 (2H, br), 3.83 (3H, s), 6.29 (1H, s), 6.99-7.04 (1H, m).

1. waitThe reaction mixture was left
2. temperatureto be cooled
3. concentrationconcentrated under reduced pressure
4. additionTo the residue was added water
5. stirringthe mixture was stirred for 1 hour
6. filtrationThe precipitate was collected by filtration
7. washwashed with water
8. customdried under reduced pressure

ORD record

ord-cae6b7d63ea1418a8239585d8711e42b

Source dataset

uspto-grants-2014_08

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US08815903B2