1,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine) → tert-butyl N-[(3S)-1-[3-chloro-6-[6-(6-methylpyrazin-2-yl)pyrazolo[4,3-c]pyridin-1-yl]pyrazin-2-yl]-3-piperidyl]carbamate

Participants

Reaction Conditions

Reaction Steps

A mixture of 6-(6-methylpyrazin-2-yl)-1H-pyrazolo[4,3-c]pyridine (110 mg, 0.52 mmol), tert-butyl N-[(3S)-1-(6-bromo-3-chloro-pyrazin-2-yl)-3-piperidyl]carbamate (252 mg, 0.62 mmol), tris(dibenzylideneacetone)dipalladium(0) (47 mg, 0.052 mmol), xantphos (62 mg; 0.10 mmol), and sodium tert-butoxide (103 mg, 1.04 mmol) in toluene 5.0 mL was stirred at 110° C. 18 h. The reaction was filtered through celite. The crude product was purified by flash chromatography (EtOAc/Heptane eluted at 75% EtOAc) to give the desired product 112 mg 41% yield. MS (ESI) m/z: 523.2.

Provenance & Evidence