Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1586420Generated: October 25, 2026

Benzylamine → 2-aminopyrido[2,3-d]pyrimidin-7(8H)-one 27

https://huagongshe.com/reaction/1586420

Reaction equation

Participants

RoleNameHCIDCharge
ReactantBenzylamineHCID 7504—
Reactant6-(2,6-Dichlorophenyl)-8-methyl-2-(methylthio)pyrido[2,3-d]pyrimidin-7(8H)-oneHCID 10736701—
SolventDimethylformamideHCID 6228—
Product2-aminopyrido[2,3-d]pyrimidin-7(8H)-one 27HCID 532787447.6%

Reaction Conditions

Temperature120 °C

Reaction Steps

A mixture of 0.165 g (0.47 mmol) of 6-(2,6-dichlorophenyl)-8-methyl-2-methylsulfanyl-8H-pyrido-[2,3-d]pyrimidin-7-one, 0.50 g (4.70 mmol) of benzylamine and 0.5 mL of dimethylformamide was heated with stirring in a 120° C. oil bath. After 5 minutes, solution was complete. After 5 hours, the excess amine and dimethylformamide were evaporated at reduced pressure, and the residue was triturated with a solution of 1 mL of acetone and 2 mL of petroleum ether. The tacky solid was filtered and recrystallized from ethyl acetate/petroleum ether to give 0.092 g of pure product; mp 217-219° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05945422
Source datasetuspto-grants-1999_08
ORD IDord-c97929cb7d0441e0a55bf8f28c62a87d
Source noteuspto-grants-1999_08