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

https://huagongshe.com/reaction/2191901

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

N,N′-dimethylethylenediamine (2.4 mL) was added to a 1,4-dioxane (50 mL) solution of 2-allyl-6-(methylthio)-1,2-dihydro-3H-pyrazolo[3,4-d]pyrimidin-3-one (4.44 g), copper(I) iodide (3.80 g), 2-iodopyridine (5.33 g) and potassium carbonate (3.80 g), and stirred overnight at 95° C. The reaction liquid was cooled, then 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 the residue was crystallized with ethyl acetate to give the entitled compound as a white solid (5.15 g).

Provenance & Evidence

DOI	10.6084/m9.figshare.5104873.v1
Patent number	US08329711B2
Source dataset	uspto-grants-2012_12
ORD ID	ord-64a8bf3483fb44b5b52e83bd2774ec5a
Source note	uspto-grants-2012_12