4-Aminopyridine → HCID 86732462, compound

Participants

Reaction Steps

73 mg of 4-chloro-2-[1-(2-fluorobenzyl)-1H-indazol-3-yl]pyrimidine-5-carbonitrile (1-14-1, 0.201 mmol, 1. eq.), 22.66 mg of pyridin-4-amine (0.241 mmol, 1.2 eq.), 42 μl of N-ethyl-N-(propan-2-yl)propan-2-amine (0.241 mmol, 1.2 eq.) and 1 ml of N,N-dimethylformamide were stirred at room temperature for 24 hours. The reaction mixture was partitioned between half-saturated aqueous sodium hydrogen carbonate solution and dichloromethane/isopropanol 4:1. The aqueous layer was extracted twice with dichloromethane/isopropanol 4:1. The combined organic layers were washed with brine, dried over a silicon filter and concentrated in vacuo. The residue was purified by flash chromatography and preparative HPLC to yield 24.4 mg (0.06 mmol, 28.9%) of the analytically pure target compound.

Provenance & Evidence