Sodium Iodide → 7-[2-(4-Cyclobutylpiperazin-1-yl)-2-oxoethyl]-3-chloro-5,6,7,8-tetrahydropyrido[3,4-c]pyridazine

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Reaction Steps

To a stirred solution of 3-chloro-5,6,7,8-tetrahydropyrido[3,4-c]pyridazine hydrogen chloride salt (0.9 g) in acetonitrile (10.0 ml) is added 2-chloro-(4-cyclobutyl-piperazine)-acetamide (1 g), K2CO3 (1.6 g), and NaI (50 mg). The resulting mixture is stirred at rt overnight. Water (20.0 ml) is added to quench the reaction, and then the acetonitrile is evaporated. The residue is extracted with DCM (20 ml×3). The combined organic phase is dried over sodium sulfate, and the solvent is removed under reduced pressure to give a residue which is purified by silica gel chromatography (EtOAc/4% TEA) to give the title compound.

Provenance & Evidence