Potassium Phosphate, Tribasic → 4-[1-Methyl-5-({5-[(25)-2-methyl-4-(oxetan-3-yl)piperazin-1-yl]pyridin-2-yl}amino)-6-oxo-1,6-dihydropyridin-3-yl]-2-[(1R,11S)-7-oxo-3,6-diazatetracyclo[9.2.1.02,10.03,8]tetradeca-2(10), 8-dien-6-yl]pyridine-3-carbaldehyde

Participants

Reaction Conditions

Reaction Steps

A round-bottomed flask was charged with 4-chloro-2-[(1R,11S)-7-oxo-3,6-diazatetracyclo[9.2.1.02,10.03,8]tetradeca-2(10),8-dien-6-yl]pyridine-3-carbaldehyde 170b (200 mg, 0.59 mmol), 1-methyl-3-({5-[(2S)-2-methyl-4-(oxetan-3-yl)piperazin-1-yl]pyridin-2-yl}amino)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1,2-dihydropyridin-2-one 191j (400 mg, 0.88 mmol), PdCl2(dppf) (50 mg, 0.06 mmol), K3PO4 3 water (300 mg, 1.20 mmol), sodium acetate (100 mg, 1.20 mmol), acetonitrile (15 mL), and water (1.5 mL). After three cycles of vacuum/argon flush, the mixture was heated at 100° C. for 3 h. It was then filtered and the filtrate was evaporated under reduced pressure. The residue was purified with silica-gel column chromatography eluting with 1:20 methanol/dichloromethane to afford 174a as a red solid (170 mg, 44%). MS-ESI: [M+H]+ 661.3

Provenance & Evidence