[CH3:1][C:2]1[CH:11]=[C:10]([CH3:12])[CH:9]=[CH:8][C:3]=1[C:4](OC)=[O:5].[NH2:13][NH2:14]>CO>[CH3:1][C:2]1[CH:11]=[C:10]([CH3:12])[CH:9]=[CH:8][C:3]=1[C:4]([NH:13][NH2:14])=[O:5]To a solution of methyl 2,4-dimethylbenzoate (2 g, 12.2 mmol) in MeOH (10 mL) was added anhydrous hydrazine (1.95 mL, 61 mmol) and the mixture was heated under reflux for 40 hours. Then the mixture was evaporated and dried under vacuum to give 2,4-dimethylbenzohydrazide as a white solid (2 g, 100%; MS (M+H, 165).
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