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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 416938Generated: October 31, 2026

1-Phenethylpiperazine → HCID 57897205, compound

https://huagongshe.com/reaction/416938

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1-PhenethylpiperazineHCID 79214—
ReactantDiisopropylethylamineHCID 81531—
Reactant2-Amino-4,5-dichloro-3-nitropyridineHCID 46867660—
SolventIsopropanolHCID 3776—
ProductHCID 57897205HCID 5789720564.5%

Reaction Conditions

Temperature65 °C

Reaction Steps

1-Phenethylpiperazine (0.100 g, 0.52 mmol, 1.1 eq) was suspended in iPrOH (1 mL). DIPEA (0.13 mL, 0.79 mmol, 1.5 eq) was added followed by 4,5-dichloro-3-nitropyridin-2-amine (0.099 g, 0.48 mmol, 1 eq). The mixture was heated and stirred at 65° C. overnight. The mixture was cooled to room temperature and filtered. The bright yellow solid was washed with iPrOH (3×2 mL), Et2O (2×2 mL) and dried to give the title compound as a bright yellow solid (0.112 g, 64%); 1H-NMR (500 MHz, DMSO-d6): δ 2.53-2.63 (m, 6H), 2.71-2.78 (m, 2H), 3.06 (m, 4H, piperazine N(CH2)2), 6.95 (s, 2H, NH2), 7.15-7.21 (m, 1H), 7.22-7.31 (m, 4H), 8.06 (s, 1H, pyridine 6-H); LC (Method B)-MS (ESI, m/z): Rt=2.31 min—362/364 [(M+H)+, Cl isotopic pattern].

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08088761B2
Source datasetuspto-grants-2012_01
ORD IDord-b4fa144fcb84407d91c895547cbdcaca
Source noteuspto-grants-2012_01