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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 501023Generated: October 30, 2026

Water → HCID 68421251, compound

https://huagongshe.com/reaction/501023

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 numberUS07772249B2
Source datasetuspto-grants-2010_08
ORD IDord-8fbeb370139b46eea405eee2e0879515
Source noteuspto-grants-2010_08