Potassium Phosphate, Tribasic → 4-(1-Methyl-5-(6,7-dihydro-4H-pyrazolo[5,1-c][1,4]oxazin-2-ylamino)-6-oxo-1,6-dihydropyridin-3-yl)-2-(4,4-dimethyl-9-oxo-1,10-diazatricyclo[6.4.0.02,6]dodeca-2(6),7-dien-10-yl)nicotinaldehyde

Participants

Role	Name	HCID	Charge
Reactant	Potassium Phosphate, Tribasic	HCID 62657	—
Reactant	Sodium Acetate	HCID 517045	—
Reactant	3-(6,7-Dihydro-4H-pyrazolo[5,1-c][1,4]oxazin-2-ylamino)-1-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2(1H)-one	HCID 58044028	—
Reactant	4-chloro-2-(7,7-dimethyl-1-oxo-1,3,4,6,7,8-hexahydro-2H-cyclopenta(4,5)pyrrolo(1,2-a)pyrazin-2-yl)nicotinaldehyde	HCID 76854078	—
Catalyst	Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)	HCID 178418228	—
Solvent	Water	HCID 962	—
Solvent	Acetonitrile	HCID 6342	—
Product	4-(1-Methyl-5-(6,7-dihydro-4H-pyrazolo[5,1-c][1,4]oxazin-2-ylamino)-6-oxo-1,6-dihydropyridin-3-yl)-2-(4,4-dimethyl-9-oxo-1,10-diazatricyclo[6.4.0.02,6]dodeca-2(6),7-dien-10-yl)nicotinaldehyde	HCID 86684297	78%

Reaction Conditions

Temperature	100 °C

Reaction Steps

A 50-mL single-neck round-bottomed flask equipped with a magnetic stirrer and a reflux condenser was charged with 4-chloro-2-{4,4-dimethyl-9-oxo-1,10-diazatricyclo[6.4.0.02,6]dodeca-2(6),7-dien-10-yl}pyridine-3-carbaldehyde 108a (200 mg, 0.58 mmol), 168a (433 mg, 1.16 mmol), PdCl2(dppf) (48 mg, 0.052 mmol), K3PO4 (246 mg, 1.16 mmol), sodium acetate (96 mg, 1.16 mmol), acetonitrile (10 mL), and water (0.5 mL). The system was evacuated and refilled with N2. The reaction mixture was stirred at 100° C. for 2 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 30:1 dichloromethane/methanol to afford 168b (250 mg, 78%) as a yellow solid. MS-ESI: [M+H]+ 554.6.

Provenance & Evidence

DOI	10.6084/m9.figshare.5104873.v1
Patent number	US08716274B2
Source dataset	uspto-grants-2014_05
ORD ID	ord-c8a263dd513943ebaffb0f8f4b77b42b
Source note	uspto-grants-2014_05