反应详情

温度

150 °C

A solution of tert-butyl 4-[6-(6-chloropyrazolo[4,3-c]pyridin-1-yl)-2-pyridyl]piperazine-1-carboxylate (90 mg; 0.22 mmol and palladium(0)tetrakis(triphenylphosphine) (25 mg, 0.022 mmol in N,N-dimethylacetamide; 2.0 mL was added trimethyl-(6-methylpyrazin-2-yl)stannane (112 mg; 0.436 mmol). The reaction mixture was heated at 150° C. for 45 min in a microwave (Biotage). The reaction mixture was filtered through celite and concentrated. The crude product was diluted with EtOAc then washed with water. The organic layers was dried with sodium sulfate, filtered, and concentrated in vacuum. The crude product was purified by flash chromatography (EtOAc/Heptane eluted at 50% EtOAc) to give tert-butyl 4-[6-[6-(6-methylpyrazin-2-yl)pyrazolo[4,3-c]pyridin-1-yl]-2-pyridyl]piperazine-1-carboxylate 60 mg in 58% yield.

1. filtrationThe reaction mixture was filtered through celite
2. concentrationconcentrated
3. additionThe crude product was diluted with EtOAc
4. washthen washed with water
5. dry with materialThe organic layers was dried with sodium sulfate
6. filtrationfiltered
7. concentrationconcentrated in vacuum
8. customThe crude product was purified by flash chromatography (EtOAc/Heptane eluted at 50% EtOAc)