Sodium hydride → (6-Chloro-imidazo[1,2-b]pyridazin-8-yl)-[5-(4-methyl-piperazin-1-ylmethyl)-pyridin-2-yl]-amine

Participants

Reaction Conditions

Reaction Steps

A mixture of 8-bromo-6-chloroimidazo[1,2-b]pyridazine (214 mg, 921 μmol, Eq: 0.95) and 5-((4-methylpiperazin-1-yl)methyl)pyridin-2-amine (200 mg, 970 μmol, Eq: 1.00) in DMF (10.0 ml) was cooled to 0° C. To this was added sodium hydride (60% in mineral oil, 124 mg, 3.1 mmol, Eq: 3.2). The reaction was allowed to stir at 0° C. for 10 min and then allowed to warm to room temperature and stirred for 72 h. The reaction was quenched with saturated NaHCO3 (aq) and then diluted with water and EtOAc. The organic layer was separated and the aqueous phase was washed with EtOAc. The organic layers were combined, dried over MgSO4 and concentrated in vacuo. The residue was dissolved in Et2O. The organic layer was washed with water and dried over MgSO4. The drying agent was removed by filtration. The resulting solution was concentrated in vacuo to give (6-chloro-imidazo[1,2-b]pyridazin-8-yl)-[5-(4-methyl-piperazin-1-ylmethyl)-pyridin-2-yl]-amine (170 mg, 49%) as a solid. LC/MS-ESI observed [M+H]+ 358.

Provenance & Evidence