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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 341128Generated: October 30, 2026

4-Hydroxybenzaldehyde → (5E)-5-[(4-Hydroxyphenyl)methylidene]-1,3-thiazolidine-2,4-dione

https://huagongshe.com/reaction/341128

Reaction equation

Participants

RoleNameHCIDCharge
Reactant4-HydroxybenzaldehydeHCID 126—
ReactantThiazolidinedioneHCID 5437—
Product(5E)-5-[(4-Hydroxyphenyl)methylidene]-1,3-thiazolidine-2,4-dioneHCID 1276528—

Reaction Steps

A compounds of Formula 3A can be synthesized according to Scheme 1A, wherein 4-hydroxybenzaldehyde is condensed with thiazolidine-2,4-dione under Knoevenagel conditions to produce (E)-5-(4-hydroxybenzylidene)thiazolidine-2,4-dione. This intermediate can then be reduced to the compound of Formula 3A by, for example, hydrogenation.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08895748B2
Source datasetuspto-grants-2014_11
ORD IDord-78161dd76cc94020a9c52df652892faa
Source noteuspto-grants-2014_11