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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 365124Generated: October 25, 2026

Diethyl Ether → 2-[4-(Diethylamino)styryl]-1-dodecylpyridinium bromide hemihydrate

https://huagongshe.com/reaction/365124

Reaction equation

Participants

RoleNameHCIDCharge
ReactantDiethyl EtherHCID 3283—
ReactantPiperidineHCID 8082—
Reactant4-(Diethylamino)benzaldehydeHCID 67114—
Reactant1-Dodecyl-2-methylpyridinium bromideHCID 21987841—
SolventEthanolHCID 702—
Product2-[4-(Diethylamino)styryl]-1-dodecylpyridinium bromide hemihydrateHCID 13171483841.2%

Reaction Steps

1-Dodecyl-2-methylpyridinium bromide (3.42 g), 0.01 mole) and 4-diethylaminobenzaldehyde (1.9 g), 0.011 mole) were refluxed in ethanol (15 ml) in the presence of piperidine (0.2 ml) under nitrogen for two hours. The solution was cooled and ether was added when an orange solid crystallised which was collected giving 2-[4-(diethylamino)styryl]-1-dodecylpyridinium bromide hemihydrate, (2.1 g), melting point 199°-200° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04608379
Source datasetuspto-grants-1986_08
ORD IDord-940de61dbdf347a2848357fa33583c82
Source noteuspto-grants-1986_08