3-chloro-4,5-dimethyl-6-((R)-3-methyl-piperazin-1-yl)-pyridazine → (R)-3-Benzyl-4,5-dimethyl-6-(3-methylpiperazin-1-yl)pyridazine

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Reaction Steps

3-Chloro-4,5-dimethyl-6-((R)-3-methyl-piperazin-1-yl)-pyridazine (400 mg, 1.66 mmol, 1 eq) is added to a solution of benzylzinc bromide (12.3 mL 0.5 M in THF, 6.64 mmol, 4 eq) and tetrakis(triphenylphosphine)palladium (100 mg, 0.08 mmol, 0.05 eq) in a microwave vial. The vial is sealed and irradiated in the microwave at 100° C. (high absorption setting) for 40 min. The reaction mixture is concentrated and purified by silica gel chromatography (5-20% EtOAc/heptane) to yield the desired compound (324 mg, 66%).

Provenance & Evidence