HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1106099Generated: October 25, 2026
Vanillin → 1-(p-Carboxyphenyl)-3-methyl-4-(3'-methoxy-4'-hydroxybenzylidene)-2-pyrazolin-5-one
https://huagongshe.com/reaction/1106099
Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Vanillin | HCID 1183 | — |
| Reactant | 4-(3-Methyl-5-oxo-2-pyrazolin-1-yl)benzoic acid | HCID 109029 | — |
| Solvent | Dimethylformamide | HCID 6228 | — |
| Product | 1-(p-Carboxyphenyl)-3-methyl-4-(3'-methoxy-4'-hydroxybenzylidene)-2-pyrazolin-5-one | HCID 1370047 | — |
Reaction Steps
218 g (1 mole) of 1-p-carboxyphenyl-3-methyl-2-pyrazolin-5-one and 152 g (1 mole) of vanillin were dissolved in 500 ml of dimethylformamide. The reaction mixture was heated for 3 h at 100° C. After cooling down to room temperature the crystallized dye was filtered with suction and rinsed with methanol.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US04311787 |
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| Source dataset | uspto-grants-1982_01 |
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| ORD ID | ord-1db8eb48ab9a43fbb50779ddf04ee0e5 |
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| Source note | uspto-grants-1982_01 |
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