Hydrogen Bromide → HCID 18615650, compound

Participants

Reaction Conditions

Reaction Steps

Ethyl 4-chloro-3,6-difluoro-2-nitrophenylcarbamate (XLI) (0.9 g, 3.2 mmol) was mixed with acetic acid (30 ml) and hydrobromic acid (48%, 25 ml), the mixture was stirred at 150° C. for 4 hr and then the volume reduced to half by evaporation Ethyl acetate (50 ml) was added and the solution was washed with water (15 ml×3) and dried over sodium sulfate. The product was purified by column chromatography (silica gel, hexane) (0.56 g). 1H NMR (CDCl3, 300 MHz) 5.73 (2H, br), 7.24 (1H, dd, J=6.1, 6.1 Hz) ppm.

Provenance & Evidence