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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 229776Generated: October 29, 2026

7-(Diethylamino)-2-oxo-2H-chromene-3-carbaldehyde → 1-(5-carboxy-pentyl)-4-[(E)-2-(7-diethylamino-2-oxo-2H-chromen-3-yl)-vinyl]-pyridinium Bromide

https://huagongshe.com/reaction/229776

Reaction equation

Participants

RoleNameHCIDCharge
Reactant7-(Diethylamino)-2-oxo-2H-chromene-3-carbaldehydeHCID 143191—
Reactant1-(5-Carboxypentyl)-4-methylpyridin-1-ium bromideHCID 17937818—
SolventToluene ethanolHCID 21863594—
Product1-(5-carboxy-pentyl)-4-[(E)-2-(7-diethylamino-2-oxo-2H-chromen-3-yl)-vinyl]-pyridinium BromideHCID 86589119—

Reaction Steps

0.2 mmol 7-diethylamino-2-oxo-2H-chromene-3-carbaldehyde and 0.2 mmol 1-(5-carboxy-pentyl)-4-methyl-pyridinium bromide are converted according to the general directions above. Column chromatography: SiO2, eluent: ethanol/toluene.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07563907B2
Source datasetuspto-grants-2009_07
ORD IDord-00d496421695455da0101c79b663e1dd
Source noteuspto-grants-2009_07