Potassium Phosphate, Tribasic → (S)-2-(6-tert-Butyl-8-fluoro-1-oxophthalazin-2(1H)-yl)-4-(5-(5-(2-ethyl-4-(oxetan-3-yl)piperazin-1-yl)pyridin-2-ylamino)-1-methyl-6-oxo-1,6-dihydropyridin-3-yl)nicotinaldehyde

Participants

Reaction Conditions

Reaction Steps

A 50-mL round bottom flask was charged with 2-(6-tert-butyl-8-fluoro-1-oxo-phthalazin-2(1H)-yl)-4-chloronicotinaldehyde 103b (150 mg, 0.43 mmol), (S)-3-(5-(2-ethyl-4-(oxetan-3-yl)piperazin-1-yl)pyridin-2-ylamino)-1-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2(1H)-one (206 mg, 0.43 mmol), PdCl2(dppf) (33 mg, 0.04 mmol), K3PO4 (202 mg, 0.86 mmol), NaOAc (71 mg, 0.86 mmol), and CH3CN (10 mL), H2O (2 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 in vacuo. The residue was purified by flash column chromatography eluting with 1:3 petroleum/ethyl acetate to afford 112a as a yellow solid (146 mg, 49%). LCMS: [M+H]+ 693

Provenance & Evidence