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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2100556Generated: October 31, 2026

Potassium tert-butoxide → 6-butyl-2-[2-(2,5-difluoro-phenyl)-ethoxymethyl]-3H-pyrido[2,3-d]pyrimidin-4-one

https://huagongshe.com/reaction/2100556

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPotassium tert-butoxideHCID 23665647—
Reactant5-butyl-2-chloro-N-[2-[2-(2,5-difluorophenyl)ethoxy]ethanimidoyl]pyridine-3-carboxamideHCID 140520066—
SolventDimethyl SulfoxideHCID 679—
Product6-butyl-2-[2-(2,5-difluoro-phenyl)-ethoxymethyl]-3H-pyrido[2,3-d]pyrimidin-4-oneHCID 136368401—

Reaction Steps

In analogy to the procedure described in example 78.4, 5-butyl-2-chloro-N-{2-[2-(2,5-difluoro-phenyl)-ethoxy]-1-imino-ethyl}-nicotinamide was treated with KOtBu in DMSO to obtain 6-butyl-2-[2-(2,5-difluoro-phenyl)-ethoxymethyl]-3H-pyrido[2,3-d]pyrimidin-4-one as off-white crystals. MS: m/e=374.4 [M+H+].

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07572801B2
Source datasetuspto-grants-2009_08
ORD IDord-ba198e4c9ac340ac97df196d0af02fb4
Source noteuspto-grants-2009_08