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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 247366Generated: October 24, 2026

Diketene → Acetoacetic acid N-[4-(6-oxo-1,4,5,6-tetrahydropyridazin-3yl)-phenyl]-amide

https://huagongshe.com/en/reaction/247366

Reaction equation

Participants

RoleNameHCIDCharge
ReactantDiketeneHCID 12661—
Reactant6-(4-Aminophenyl)-4,5-dihydropyridazin-3(2H)-oneHCID 676750—
SolventDimethylformamideHCID 6228—
ProductAcetoacetic acid N-[4-(6-oxo-1,4,5,6-tetrahydropyridazin-3yl)-phenyl]-amideHCID 13646979—

Reaction Steps

20 g (0.106 mole) of 3-(4-aminophenyl)-6-oxo-1,4,5,6-tetrahydropyridazine in 250 ml of dimethylformamide are stirred with 9.47 g (0.113 moles) of diketene for 12 hours at room temperature. After the mixture has been concentrated, the residue is boiled up with 100 ml of ethanol, and the product is filtered off after cooling.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04707479
Source datasetuspto-grants-1987_11
ORD IDord-06341a1303b7490f95e684614b1007ea
Source noteuspto-grants-1987_11