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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 475329Generated: October 31, 2026

Urea → HCID 178517174, compound

https://huagongshe.com/reaction/475329

Reaction equation

Participants

RoleNameHCIDCharge
ReactantUreaHCID 1176—
Reactant3-Amino-6-chloropyridine-2-carbaldehydeHCID 57461139—
SolventWaterHCID 962—
ProductHCID 178517174HCID 178517174—

Reaction Conditions

Temperature180 °C

Reaction Steps

3-amino-6-chloro-pyridine-2-carbaldehyde (3.2 g, 13.0 mmol) is mixed thoroughly with urea (7.8 g, 130 mmol) and heated to 180° C. in the preheated oil bath for 3 h. Then the reaction mixture is suspended in H2O, the precipitate is filtered off and 6-chloro-3H-pyrido[3,2-d]pyrimidin-2-one is obtained.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08637549B2
Source datasetuspto-grants-2014_01
ORD IDord-807bfca2af4c47ee97433cf8fbcbe68d
Source noteuspto-grants-2014_01