氯化铵 → HCID 20309528，化合物

反应方程式

[CH3:1][NH:2][C:3](=[O:18])[CH2:4][CH2:5][C:6](=[O:17])[C:7]1[C:12]([O:13][CH3:14])=[CH:11][CH:10]=[CH:9][C:8]=1[O:15]C.[Cl-].[NH4+]>ClC1C=CC=CC=1>[CH3:1][NH:2][C:3](=[O:18])[CH2:4][CH2:5][C:6](=[O:17])[C:7]1[C:12]([O:13][CH3:14])=[CH:11][CH:10]=[CH:9][C:8]=1[OH:15]

参与物

实验过程

N-Methyl 3-(2,6-dimethoxybenzoyl)propionamide was demethylated with ammonium chloride in chlorobenzene to give N-methyl 3-(2-hydroxy-6-methoxybenzoyl)propionamide, m.p. 125° which may also be prepared from a by-product, N-methyl 3-(2,6-dihydroxybenzoyl)propionamide, by selective methylation with methyl iodide and potassium carbonate in acetone.