反应详情

At room temperature, 1-chloro-4-isocyanato-2-(trifluoromethyl)benzene (1.06 g, 4.77 mmol, 1.05 eq) was dissolved in dichloromethane (10 mL). A solution of tert-butyl 4-(4-amino-3-fluorophenoxy)picolinate (1.38 g, 4.54 mmol, 1 eq) in dichloromethane (50 mL) was added dropwise slowly. The resulted mixture was stirred at room temperature for 16 h. The solvent was removed under reduced pressure, and the resulted solid was purified by column chromatography (dichloromethane: methanol=30:1) to give the title compound (1.9 g, purity 94%, yield 80%) as a reddish-brown solid.

1. customThe solvent was removed under reduced pressure
2. customthe resulted solid was purified by column chromatography (dichloromethane: methanol=30:1)