1,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine) → tert-butyl N-[1-[6-(6-chloropyrazolo[4,3-c]pyridin-1-yl)-2-pyridyl]-6-methyl-3-piperidyl]carbamate

Participants

Reaction Conditions

Reaction Steps

A mixture of 6-chloro-1H-pyrazolo[4,3-c]pyridine (100 mg, 0.651 mmol), tert-butyl N-[1-(6-bromo-2-pyridyl)-6-methyl-3-piperidyl]carbamate (422 mg, 1.14 mmol), tris(dibenzylideneacetone)dipalladium(0) (59 mg, 0.065 mmol), xantphos (78 mg, 0.130 mmol), and sodium tert-butoxide (129 mg, 1.30 mmol) in toluene 6.0 mL was stirred at 100° C. 18 h. The reaction was filtered through celite. The crude product was purified by flash chromatography (EtOAc/Heptane) to give the desired product (185 mg) in 64% yield. MS (ESI) m/z: 443.2

Provenance & Evidence