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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2100492Generated: November 2, 2026

Potassium tert-butoxide → 6-chloro-2-[2-(3-chloro-4-fluoro-phenyl)-ethoxymethyl]-3H-pyrido[2,3-d]pyrimidin-4-one

https://huagongshe.com/reaction/2100492

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPotassium tert-butoxideHCID 23665647—
Reactant2,5-dichloro-N-[2-[2-(3-chloro-4-fluorophenyl)ethoxy]ethanimidoyl]pyridine-3-carboxamideHCID 140520070—
Product6-chloro-2-[2-(3-chloro-4-fluoro-phenyl)-ethoxymethyl]-3H-pyrido[2,3-d]pyrimidin-4-oneHCID 135899183—

Reaction Steps

In analogy to the procedure described in example 78.4, 2,5-dichloro-N-{2-[2-(3-chloro-4-fluoro-phenyl)-ethoxy]-1-imino-ethyl}-nicotinamide was treated with KOtBu to obtain 6-chloro-2-[2-(3-chloro-4-fluoro-phenyl)-ethoxymethyl]-3H-pyrido[2,3-d]pyrimidin-4-one as orange crystals. MS: m/e=368.0 [M+H+].

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07572801B2
Source datasetuspto-grants-2009_08
ORD IDord-e21fd43a7ac94565bcb4c65f5597d97d
Source noteuspto-grants-2009_08