Piperazine → 2-(6-Piperazin-1-YL-pyridin-3-YL)-1H-benzoimidazole
Reaction equation
Cl[C:2]1[N:7]=[CH:6][C:5]([C:8]2[NH:12][C:11]3[CH:13]=[CH:14][CH:15]=[CH:16][C:10]=3[N:9]=2)=[CH:4][CH:3]=1.[NH:17]1[CH2:22][CH2:21][NH:20][CH2:19][CH2:18]1>CN1CCCC1=O>[N:17]1([C:2]2[N:7]=[CH:6][C:5]([C:8]3[NH:12][C:11]4[CH:13]=[CH:14][CH:15]=[CH:16][C:10]=4[N:9]=3)=[CH:4][CH:3]=2)[CH2:22][CH2:21][NH:20][CH2:19][CH2:18]1Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Conditions
- Temperature
- 140 °C
Procedure
A mixture of 2-(6-chloropyridin-3-yl)-1H-benzoimidazole (0.468 g, 2.040 mmol) and piperazine (0.516 g, 6.000 mmol) in 1-methyl-2-pyrrolidone was heated to 140° C. with stirring for 2 hours. The solvent was removed in vacuo. The residue was diluted with water (100 mL) and stirred for 15 minutes. A white precipitate was formed which was collected by filtration and dried to afford the title compound in 93% yield (0.529 g, 1.900 mmol).