反应详情

To a toluene solution (10 ml) of 1.0 g of 3-[(2,2,2-trichloroethoxy)carbonylamino]benzoic acid produced in Example 9-1 was added 2 ml of thionyl chloride, and the resultant mixture was stirred at 100° C. The solvent was distilled off under reduced pressure, and the residue was dissolved in toluene. The solvent was again distilled off under reduced pressure to obtain 1.0 g (yield 95%) of the title compound as a solid.

1. distillationThe solvent was distilled off under reduced pressure
2. dissolutionthe residue was dissolved in toluene
3. distillationThe solvent was again distilled off under reduced pressure