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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 416754Generated: October 29, 2026

Hydrochloric Acid → HCID 57897247, compound

https://huagongshe.com/reaction/416754

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantDiisopropylethylamineHCID 81531—
Reactant2-Phenoxy-1-piperazin-1-ylethanoneHCID 771959—
Reactant5-Bromo-4-chloro-3-nitropyridin-2-amineHCID 45480236—
SolventIsopropanolHCID 3776—
ProductHCID 57897247HCID 57897247—

Reaction Conditions

Temperature45 °C

Reaction Steps

To a mixture of 5-bromo-4-chloro-3-nitro-pyridin-2-ylamine (0.126 g, 0.50 mmol) and isopropanol (9 ml) was added 2-phenoxy-1-(piperazin-1-yl)ethanone×HCl (0.141 g, 0.55 mmol) followed by diisopropylethylamine (0.20 ml, 1.10 mmol). The reaction mixture was heated at 45° C. for 22 h, then allowed to cool to room temperature and diluted with isopropanol (4 ml). The precipitate was collected by filtration and washed with isopropanol and diethyl ether. The title compound was thus obtained as a yellow solid (0.163 g, 75%). 1H-NMR (500 MHz, DMSO-d6) 3.08 (br s) and 3.59 (br s) (8H, 2× piperazine N(CH2)2), 4.87 (s, 2H, COCH2O), 6.93 (m, 3H) and 7.28 (m, 2H) (ArH), 7.08 (s, 2H, NH2), 8.21 (s, 1H, 6-H);

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08088761B2
Source datasetuspto-grants-2012_01
ORD IDord-28f39c5bc5544e3a807c47b236eda291
Source noteuspto-grants-2012_01