Sodium Hydroxide → 2-{[3-(4-Chlorophenyl)-1,2-benzisoxazol-6-yl]oxy}pentanoic acid
反応式
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[C:12]3[CH:13]=[CH:14][C:15]([O:17][CH:18]([CH2:24][CH2:25][CH3:26])[C:19]([O:21]CC)=[O:20])=[CH:16][C:11]=3[O:10][N:9]=2)=[CH:4][CH:3]=1.[OH-].[Na+]>CO>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([C:8]2[C:12]3[CH:13]=[CH:14][C:15]([O:17][CH:18]([CH2:24][CH2:25][CH3:26])[C:19]([OH:21])=[O:20])=[CH:16][C:11]=3[O:10][N:9]=2)=[CH:6][CH:7]=1参加物
4
実験手順
A solution of 3.5 g of ethyl 2-{[3-(4-chlorophenyl)-1,2-benzisoxazol-6-yl]oxy}pentanoate, 30 ml 15% sodium hydroxide and 30 ml methanol is heated under reflux for 1.5 hr. The reaction mixture is poured into ice/dil hydrochloric acid with stirring. The precipitate is collected, washed with water and dried in vacuo. Recrystallization from toluene/acetonitrile affords 2-{[3-(4-chlorophenyl)-1,2-benzisoxazol-6-yl]oxy}pentanoic acid, mp 170° C.