Ammonia → 2-allyl-6-(methylthio)-1-pyridin-2-yl-3H-pyrazolo[3,4-d]pyrimidin-3-one

Participants

Role	Name	HCID	Charge
Reactant	Ammonia	HCID 222	—
Reactant	N,N'-Dimethylethylenediamine	HCID 8070	—
Reactant	Potassium Carbonate	HCID 11430	—
Reactant	2-Iodopyridine	HCID 221126	—
Reactant	2-Allyl-6-(methylthio)-1H-pyrazolo[3,4-d]pyrimidin-3(2H)-one	HCID 67171470	—
Catalyst	Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)	HCID 24350	—
Solvent	1,4-Dioxane	HCID 31275	—
Product	2-allyl-6-(methylthio)-1-pyridin-2-yl-3H-pyrazolo[3,4-d]pyrimidin-3-one	HCID 67171246	86.1%

Reaction Conditions

Temperature	95 °C

Reaction Steps

2.4 mL of N,N′-dimethylethylenediamine was added to 1,4-dioxane (50 mL) solution of 4.44 g of 2-allyl-6-(methylthio)-1,2-dihydro-3H-pyrazolo[3,4-d]pyrimidin-3-one, 3.80 g of copper(I) iodide, 5.33 g of 2-iodopyridine and 3.80 g of potassium carbonate, and stirred overnight at 95° C. The reaction liquid was cooled, aqueous ammonia was added thereto and extracted with ethyl acetate, washed with saturated saline water and dried with anhydrous magnesium sulfate. The solvent was evaporated away under reduced pressure, and crystallized with ethyl acetate to obtain 5.15 g of the entitled compound as a white solid.

Provenance & Evidence

DOI	10.6084/m9.figshare.5104873.v1
Patent number	US08198281B2
Source dataset	uspto-grants-2012_06
ORD ID	ord-024f61aeba4a4ad19bd0518f50f528fc
Source note	uspto-grants-2012_06