Acetonitrile → 2-{4,4-Dimethyl-9-oxo-7-thia-10-azatricyclo[6.4.0.02,6]dodeca-1(8),2(6)-dien-10-yl}-4-[1-methyl-5-({5-[(morpholin-4-yl)carbonyl]pyridin-2-yl}amino)-6-oxopyridazin-3-yl]pyridine-3-carbaldehyde

Participants

Reaction Conditions

Reaction Steps

A round-bottomed flask equipped with a reflux condenser was charged with 4-chloro-2-{4,4-dimethyl-9-oxo-7-thia-10-azatricyclo[6.4.0.02,6]dodeca-1(8),2(6)-dien-10-yl}pyridine-3-carbaldehyde 109a (144 mg, 0.40 mmol), 1-methyl-5-(5-(morpholine-4-carbonyl)pyridin-2-ylamino)-6-oxo-1,6-dihydropyridazin-3-ylboronic acid 258a (215 mg, 0.60 mmol), PdCl2(dppf) (16 mg, 0.020 mmol), K3PO4 trihydrate (207 mg, 0.80 mmol), sodium acetate (66 mg, 0.80 mmol), acetonitrile (15 mL), and water (1.5 mL). After three cycles of vacuum/argon flush, the mixture was stirred at 100° C. for 2 h. It was then filtered and the filtrate was evaporated in vacuo. The residue was purified with silica-gel column chromatography eluting with 25:1 dichloromethane/methanol to afford 259a as a yellow solid (80 mg, 30%). MS-ESI: [M+H]+ 640.3.

Provenance & Evidence