2,4-Dihydroxybenzaldehyde → HCID 136607406, compound
Reaction equation
[Cl:1][C:2]1[CH:7]=[C:6]([Cl:8])[CH:5]=[CH:4][C:3]=1[C:9]1[CH:10]=[C:11]([C:14]([NH:16][NH2:17])=[O:15])[NH:12][N:13]=1.[OH:18][C:19]1[CH:26]=[C:25]([OH:27])[CH:24]=[CH:23][C:20]=1[CH:21]=O>C(O)C>[OH:18][C:19]1[CH:26]=[C:25]([OH:27])[CH:24]=[CH:23][C:20]=1[CH:21]=[N:17][NH:16][C:14]([C:11]1[NH:12][N:13]=[C:9]([C:3]2[CH:4]=[CH:5][C:6]([Cl:8])=[CH:7][C:2]=2[Cl:1])[CH:10]=1)=[O:15]Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
In ethanol (30 ml), 5-(2,4-dichlorophenyl)-2H-pyrazole-3-carboxylic acid hydrazide (136 mg) prepared in the Step 21-1-1 and 2,4-dihydroxybenzaldehyde (69 mg) was heated under reflux for 29 hours. Crystal appeared as the mixture was concentrated under a reduced pressure, the resulting crystal was separated by filtration, washed with ethanol, washed with ethyl acetate, and dried to give the title compound (129 mg, 66%).