Salicylaldehyde → 3-Salicylideneamino-1-(2-pyridyl)-2-pyrazoline
Reaction equation
[NH2:1][C:2]1[CH2:6][CH2:5][N:4]([C:7]2[CH:12]=[CH:11][CH:10]=[CH:9][N:8]=2)[N:3]=1.[CH:13](=O)[C:14]1[C:15](=[CH:17][CH:18]=[CH:19][CH:20]=1)[OH:16]>CO>[CH:13](=[N:1][C:2]1[CH2:6][CH2:5][N:4]([C:7]2[CH:12]=[CH:11][CH:10]=[CH:9][N:8]=2)[N:3]=1)[C:14]1[C:15](=[CH:17][CH:18]=[CH:19][CH:20]=1)[OH:16]Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
3-Amino-1-(2-pyridyl)-2-pyrazoline (1.6 g) and salicylaldehyde (1.2 g) were dissolved together with methanol (16 ml). The resulting solution was heated to reflux and after about 15 minutes a crystalline solid separated. After another 15 minutes at reflux the suspension was cooled and the separated 3-salicylideneamino-1-(2-pyridyl)-2-pyrazoline was re-crystallized from methanol m.p. 242°-243° (yield 500 mg).