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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2056448Generated: October 25, 2026

2-Chloro-5-fluorobenzoyl chloride → 6-[4-(2-CHLORO-5-FLUOROBENZOYL)PIPERAZIN-1-YL]PYRIDAZINE-3-CARBOXYLIC Acid (2-CYCLOPROPYLETHYL)AMIDE

https://huagongshe.com/reaction/2056448

Reaction equation

Participants

RoleNameHCIDCharge
Reactant2-Chloro-5-fluorobenzoyl chlorideHCID 2757540—
ReactantN-(2-cyclopropylethyl)-6-(1-piperazinyl)-3-pyridazinecarboxamideHCID 66849327—
Product6-[4-(2-CHLORO-5-FLUOROBENZOYL)PIPERAZIN-1-YL]PYRIDAZINE-3-CARBOXYLIC Acid (2-CYCLOPROPYLETHYL)AMIDEHCID 11453250—

Reaction Steps

Following the procedure of Example 3, making variations only as required to use 2-chloro-5-fluorobenzoyl chloride in place of isoxazole-5-carbonyl chloride to react with 6-piperazin-1-yl-pyridazine-3-carboxylic acid (2-cyclopropylethyl)amide, the title compound was obtained as a white solid (94% yield). m.p. 194-196° C. 1H NMR (300 MHz, CDCl3) δ 8.05, 7.96, 7.41-7.37, 7.11-7.03, 7.00, 4.07-3.34, 1.55-1.46, 0.79-0.68, 0.48-0.42, 0.11-0.06. 13C NMR (75 MHz, CDCl3) δ 165.7, 163.0, 160.0, 159.7, 145.5, 136.7, 131.5, 127.1, 125.3, 117.8, 115.2, 112.5, 46.0, 44.8, 44.6, 41.2, 39.6, 34.5, 8.6, 4.2. MS (ES+) m/z 432.2 (M+1).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07335658B2
Source datasetuspto-grants-2008_02
ORD IDord-121cf807313243a5b5b0f7b676373359
Source noteuspto-grants-2008_02