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
반응식
Cl[C:2]1[N:3]=[N:4][C:5]([N:10]2[CH2:15][CH2:14][NH:13][C@H:12]([CH3:16])[CH2:11]2)=[C:6]([CH3:9])[C:7]=1[CH3:8].[Br-].[CH2:18]([Zn+])[C:19]1[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=1>C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH2:18]([C:2]1[N:3]=[N:4][C:5]([N:10]2[CH2:15][CH2:14][NH:13][C@H:12]([CH3:16])[CH2:11]2)=[C:6]([CH3:9])[C:7]=1[CH3:8])[C:19]1[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=1참가 물질
4
실험 절차
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%).