反应详情

温度

60 °C

To 3-cyano-4-methoxy-5-trifluoromethoxybenzoic acid (500 mg), toluene (10 mL), N,N-dimethylformamide (3 droplets) and thionyl chloride (0.28 mL) were added, and then the mixture was stirred at 60° C. for 6 hours. The solvent was distilled off under reduced pressure and the obtained residue was azeotroped with toluene and used for the synthesis of (i).

1. distillationThe solvent was distilled off under reduced pressure
2. customthe obtained residue was azeotroped with toluene
3. customused for the synthesis of (i)