Potassium Phosphate, Tribasic → HCID 86684471, compound

Participants

Reaction Conditions

Reaction Steps

A 25-mL single-neck round-bottomed flask equipped with a magnetic stirrer and a reflux condenser was charged with 3-(5-acetyl-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazin-2-ylamino)-5-bromo-1-methylpyridin-2(1H)-one 209c (183 mg, 0.50 mmol), {3-[(acetoxy)methyl]-2-{6-oxo-8-thia-4,5-diazatricyclo[7.4.0.02,7]trideca-1(9),2(7),3-trien-5-yl}pyridin-4-yl}boronic acid 230i (200 mg, 0.50 mmol), Pd(dppf)Cl2 (37 mg, 0.05 mmol), K3PO4 (212 mg, 1.0 mmol), sodium acetate (82 mg, 1.0 mmol), water (0.5 mL), and acetonitrile (5 mL). After three cycles of vacuum/argon flush, the mixture was heated at 90° C. for 1 h. It was then cooled to room temperature and filtered. The filtrate was concentrated under reduced pressure and the resulting residue was purified by silica-gel column chromatography eluting with dichloromethane/methanol (50:1 to 20:1) to afford 247a as yellow solid (100 mg, 31%). MS-ESI: [M+H]+ 641.2.

Provenance & Evidence