Potassium Phosphate, Tribasic → 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-6-oxo-5-[(pyrazin-2-yl)amino]-1,6-dihydropyridin-3-yl}pyridine-3-carbaldehyde

Participants

Role	Name	HCID	Charge
Reactant	Potassium Phosphate, Tribasic	HCID 62657	—
Reactant	Sodium Acetate Trihydrate	HCID 23665404	—
Reactant	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	HCID 86684185	—
Reactant	1-Methyl-3-(pyrazin-2-ylamino)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2(1H)-one	HCID 86684330	—
Catalyst	Water	HCID 962	—
Catalyst	Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)	HCID 178418228	—
Solvent	Acetonitrile	HCID 6342	—
Product	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-6-oxo-5-[(pyrazin-2-yl)amino]-1,6-dihydropyridin-3-yl}pyridine-3-carbaldehyde	HCID 86684329	54%

Reaction Conditions

Temperature	100 °C

Reaction Steps

A 25-mL single-neck 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 (100 mg, 0.30 mmol), 184a (170 mg, 0.60 mmol), Pd(dppf)Cl2 (12 mg, 0.015 mmol), K3PO4 (130 mg, 0.60 mmol), sodium acetate trihydrate (85 mg, 0.60 mmol), acetonitrile (10 mL), and water (6 drops). 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 25:1 of dichloromethane/methanol to afford 184b (80 mg, 54%) as a yellow brown solid. MS-ESI: [M+H]+ 527.2.

Provenance & Evidence

DOI	10.6084/m9.figshare.5104873.v1
Patent number	US09238655B2
Source dataset	uspto-grants-2016_01
ORD ID	ord-b4e8a7a7cc484f9f93bf47eb8ba0c6bb
Source note	uspto-grants-2016_01