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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 278824Generated: November 2, 2026

5-[3-(5-Cyano-1-ethyl-1,6-dihydro-4-methyl-2,6-dioxo-3(2H)-pyridinylidene)-1-propen-1-yl]-1-ethyl-1,2-dihydro-6-hydroxy-4-methyl-2-oxo-3-pyridinecarbonitrile → HCID 86757896, compound

https://huagongshe.com/reaction/278824

Reaction equation

Participants

RoleNameHCIDCharge
Reactant5-[3-(5-Cyano-1-ethyl-1,6-dihydro-4-methyl-2,6-dioxo-3(2H)-pyridinylidene)-1-propen-1-yl]-1-ethyl-1,2-dihydro-6-hydroxy-4-methyl-2-oxo-3-pyridinecarbonitrileHCID 119884—
ReactantAmmonium AcetateHCID 517165—
ReactantTriethylammoniumHCID 1385867—
SolventAcetic AcidHCID 176—
ProductHCID 86757896HCID 86757896—

Reaction Steps

4.9 g of commercial triethylammonium 5-(3-(5-cyano-1-ethyl-4-methyl-2,6-dioxo-1,6-dihydro-2H -pyridin-3-ylidene)propenyl-1-ethyl-6-hydroxy-4-methyl-2-oxo-1,2-dihydropyridine-3-carbonitrile (24a) was made to react with 0.8 g of ammonium acetate in 75 mL of acetic acid as described under (a). This gave 3.6 g of dye (24a).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06361571B1
Source datasetuspto-grants-2002_03
ORD IDord-b7d91f0df61f4c0e8bf75f4751a6edba
Source noteuspto-grants-2002_03