Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2184181Generated: November 1, 2026

4-Aminopyridine → 2-(pyridin-4-ylamino)-6-(3,5-dimethoxyphenyl)-8-ethyl-8H-pyrido[2,3-d]pyrimidin-7-one

https://huagongshe.com/reaction/2184181

Reaction equation

Participants

RoleNameHCIDCharge
Reactant4-AminopyridineHCID 1727—
ReactantLithium hydrideHCID 62714—
Reactant2-(methylsulfanyl)-6-(3,5-dimethoxyphenyl)-8-ethyl-8H-pyrido[2,3-d]pyrimidin-7-oneHCID 11199113—
Product2-(pyridin-4-ylamino)-6-(3,5-dimethoxyphenyl)-8-ethyl-8H-pyrido[2,3-d]pyrimidin-7-oneHCID 990913692.7%

Reaction Steps

Following the general procedure of Examples 2 and 3, 791.0 mg (8.404 mM) of 4-aminopyridine was reacted with 212.5 mg (26.73 mM) of lithium hydride and 3002.4 mg (8.4 mM) of 2-(methylsulfanyl)-6-(3,5-dimethoxyphenyl)-8-ethyl-8H-pyrido[2,3-d]pyrimidin-7-one to give 92.7% yield (95.9% purity) of 2-(pyridin-4-ylamino)-6-(3,5-dimethoxyphenyl)-8-ethyl-8H-pyrido[2,3-d]pyrimidin-7-one.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06900316B2
Source datasetuspto-grants-2005_05
ORD IDord-7a340030bc6e4f4080979e85f55d788c
Source noteuspto-grants-2005_05