Hydrochloric Acid → Methyl suberanilate
반응식
[C:1]([OH:18])(=[O:17])[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][C:8]([NH:10][C:11]1[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=1)=[O:9].Cl.[CH3:20]O>>[C:1]([O:18][CH3:20])(=[O:17])[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][C:8]([NH:10][C:11]1[CH:12]=[CH:13][CH:14]=[CH:15][CH:16]=1)=[O:9]참가 물질
4
반응 조건
- 온도
- 50 °C
실험 절차
Suberanilic acid (Compound 3, 249.3 g, 1.0 mole) and methanol (0.4-0.5 L) are combined and heated to 45-55° C. The pH is adjusted to ≦2 using hydrochloric acid, and the batch temperature is maintained at 45-55° C. until the reaction is complete. The reaction is quenched with deionized water (0.1-0.2 L). The batch is cooled to 25-30° C. and seeded to induce crystallization, and then cooled to 0-10° C. The batch is filtered, and the cake washed with a 50:50 (v/v) methanol/water solution (0.28-0.34 L) at 0-10° C. The wet cake is dried at a maximum of 46° C. under vacuum to yield methyl suberanilate.