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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 422785Generated: October 25, 2026

HCID 178500928, compound → Methyl 1,6-dihydro-4-hydroxy-6-oxo-1-phenyl-3-pyridazinecarboxylate

https://huagongshe.com/reaction/422785

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHCID 178500928HCID 178500928—
Solvent1,2-DichlorobenzeneHCID 7239—
ProductMethyl 1,6-dihydro-4-hydroxy-6-oxo-1-phenyl-3-pyridazinecarboxylateHCID 5468616199.1%

Reaction Steps

A mixture of 3-oxo-2-(phenylhydrazono)-pentanedioic acid dimethyl ester (4.38 g, 15.7 mmol) in 1,2-dichlorobenzene (15 mL) was refluxed. After 20 hours, the reaction mixture was concentrated under reduced pressure to give 3.83 g (99%) of the desired product.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08101639B2
Source datasetuspto-grants-2012_01
ORD IDord-4d11eac0e23b43b1886115f08898fabc
Source noteuspto-grants-2012_01