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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1793098Generated: November 3, 2026

Water → HCID 68421251, compound

https://huagongshe.com/reaction/1793098

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantMethyl 2-chloro-3-oxopentanoateHCID 545096—
ReactantHCID 22024525HCID 22024525—
SolventDimethylformamideHCID 6228—
ProductHCID 68421251HCID 68421251—

Reaction Conditions

Temperature140 °C

Reaction Steps

Methyl 2-chloro-3-oxopentanoate (7 mL) was added to a solution of the resulting 4-(2,4-dimethylphenyl)-6-methyl-3-pyridazinamine in N,N-dimethylformamide (60 mL), and the mixture was heated at 140° C. for 6 hours. Water was added thereto, which was extracted with ethyl acetate. The organic layer was washed with an aqueous saturated sodium bicarbonate solution and brine, dried over anhydrous magnesium sulfate and evaporated, to give 8-(2,4-dimethylphenyl)-2-ethyl-6-methylimidazo[1,2-b]pyridazine-3-carboxylic acid methyl ester as a crude product.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07078405B2
Source datasetuspto-grants-2006_07
ORD IDord-4cf939a5affd4488b7559b3acba5ae40
Source noteuspto-grants-2006_07