Cesium carbonate → 5-Bromo-3-(5-((3R,5S)-3,5-dimethylmorpholine-4-carbonyl)pyridin-2-ylamino)-1-methylpyridin-2(1H)-one

Participants

Role	Name	HCID	Charge
Reactant	Cesium carbonate	HCID 10796	—
Reactant	1,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine)	HCID 636044	—
Reactant	3,5-Dibromo-1-methylpyridin-2(1H)-one	HCID 3614350	—
Reactant	(6-Aminopyridin-3-yl)((3R,5S)-3,5-dimethylmorpholino)methanone	HCID 86684570	—
Catalyst	Bis(dibenzylideneacetone)palladium	HCID 9811564	—
Solvent	1,4-Dioxane	HCID 31275	—
Product	5-Bromo-3-(5-((3R,5S)-3,5-dimethylmorpholine-4-carbonyl)pyridin-2-ylamino)-1-methylpyridin-2(1H)-one	HCID 86684571	66.3%

Reaction Conditions

Temperature	100 °C

Reaction Steps

A 50-mL round-bottomed flask equipped with a magnetic stirrer and a reflux condenser was charged with 320a (160 mg, 1.0 eq., 0.68 mmol), 3,5-dibromo-1-methylpyridin-2(1H)-one (273 mg, 1.5 eq., 1.02 mmol), Pd2(dba)3 (64 mg, 0.1 eq., 0.070 mmol), Xantphos (79 mg, 0.2 eq., 0.14 mmol), Cs2CO3 (444 mg, 2.0 eq., 1.36 mmol), and dioxane (20 mL). After three cycles of vacuum/nitrogen flush, the mixture was heated at 100° C. for 2 h. It was then cooled to room temperature and filtered. The filtrate was evaporated under reduced pressure and the resulting residue was purified by silica-gel column chromatography eluting with ethyl acetate to afford 320b (190 mg, 66%) as a yellow solid. MS-ESI: [M+H]+ 420.8.

Provenance & Evidence

DOI	10.6084/m9.figshare.5104873.v1
Patent number	US09238655B2
Source dataset	uspto-grants-2016_01
ORD ID	ord-0acf8a7b8a5f4e8aa7e493fcfe10647e
Source note	uspto-grants-2016_01