Potassium Phosphate, Tribasic → 4-{1-Methyl-6-oxo-5-[(pyridin-2-yl)amino]pyridin-3-yl}-2-{6-oxo-8-thia-4,5-diazatricyclo[7.4.0.02,7]trideca-1(9),2(7),3-trien-5-yl}pyridine-3-carbaldehyde

Participants

Role	Name	HCID	Charge
Reactant	Potassium Phosphate, Tribasic	HCID 62657	—
Reactant	Sodium Acetate	HCID 517045	—
Reactant	4-Chloro-2-{6-oxo-8-thia-4,5-diazatricyclo[7.4.0.02,7]trideca-1(9),2(7),3-trien-5-yl}pyridine-3-carbaldehyde	HCID 86684220	—
Reactant	1-Methyl-3-(pyridin-2-ylamino)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2(1H)-one	HCID 86684318	—
Catalyst	Water	HCID 962	—
Catalyst	Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)	HCID 178418228	—
Solvent	Acetonitrile	HCID 6342	—
Product	4-{1-Methyl-6-oxo-5-[(pyridin-2-yl)amino]pyridin-3-yl}-2-{6-oxo-8-thia-4,5-diazatricyclo[7.4.0.02,7]trideca-1(9),2(7),3-trien-5-yl}pyridine-3-carbaldehyde	HCID 86684317	88.1%

Reaction Steps

A 50-mL single-neck round-bottomed flask equipped with a magnetic stirrer and a reflux condenser was charged with 178b (131 mg, 0.40 mmol), 4-chloro-2-{6-oxo-8-thia-4,5-diazatricyclo[7.4.0.02,7]trideca-1(9),2(7),3-trien-5-yl}pyridine-3-carbaldehyde 124a (138 mg, 0.40 mmol), Pd(dppf)Cl2 (33 mg, 0.040 mmol), K3PO4 (170 mg, 0.80 mmol), sodium acetate (66 mg, 0.80 mmol), water (6 drops), and acetonitrile (10 mL). After three cycles of vacuum/argon flush, the mixture was heated at reflux 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 178c as a yellow solid (180 mg, 88%). MS-ESI: [M+H]+ 511.2

Provenance & Evidence

DOI	10.6084/m9.figshare.5104873.v1
Patent number	US08716274B2
Source dataset	uspto-grants-2014_05
ORD ID	ord-51561037f4e5453db53d06c7729981a6
Source note	uspto-grants-2014_05