反应详情

A mixture of ethyl 5-(2,2,2-trifluoroethoxy)picolinate (253 mg, 1.0 mmol) and 2 mol/L aqueous sodium hydroxide solution (1.0 mL, 2.0 mmol) in methanol (5 mL) was stirred at room temperature for 4 h. Then, methanol was removed in vacuo. To the residue were added water (2 mL) and 2 mol/L hydrochloric acid (pH˜4). The formed precipitate was collected by filtration to give 118 mg (52% yield) of the title compound as a gray solid:

1. customThen, methanol was removed in vacuo
2. additionTo the residue were added water (2 mL) and 2 mol/L hydrochloric acid (pH˜4)
3. filtrationThe formed precipitate was collected by filtration