C[O:2][C:3](=[O:23])[C:4]1[CH:9]=[CH:8][C:7]([O:10][CH3:11])=[C:6]([O:12][C:13]2[CH:18]=[CH:17][CH:16]=[C:15]([C:19]([F:22])([F:21])[F:20])[CH:14]=2)[N:5]=1.[OH-].[Na+].Cl>C(O)C>[CH3:11][O:10][C:7]1[CH:8]=[CH:9][C:4]([C:3]([OH:23])=[O:2])=[N:5][C:6]=1[O:12][C:13]1[CH:18]=[CH:17][CH:16]=[C:15]([C:19]([F:21])([F:22])[F:20])[CH:14]=15-methoxy-6-[3-(trifluoromethyl)phenoxy] picolinic acid methyl ester (0.7 g, 0.0021 mol) was dissolved in 2.8 ml of ethyl alcohol. One milliliter of an aqueous solution of sodium hydroxide (0.102 g, 0.0021×1.2 mol) was added to the obtained solution. The resultant mixture was heated and stirred at 70° C. for 1.5 hours. After cooling, the obtained reaction solution was mixed with 2 ml of concentrated hydrochloric acid, thereby precipitating solids. The precipitated solids were filtered out from the solution, washed with water, and then dried.
読み込み中…