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HuagongsheHuagongshe Chemie-Druckbericht · Nur für Forschungszwecke
HRID 58061Erstellt: 25. Oktober 2026

1,2-Dichloroethane → 4-bromo-1,3-dimethyl-1H-pyrazole-5-carboxamide

https://huagongshe.com/reaction/58061

Reaktionsgleichung

Beteiligte Stoffe

RolleNameHCIDEinwaage
Edukt1,2-DichloroethaneHCID 11—
EduktAmmonium ChlorideHCID 25517—
Edukt1-HydroxybenzotriazoleHCID 75771—
EduktDiisopropylethylamineHCID 81531—
Edukt4-bromo-1,3-dimethyl-1H-pyrazole-5-carboxylic acidHCID 2779833—
LösungsmittelDimethylformamideHCID 6228—
LösungsmittelEthyl AcetateHCID 8857—
Produkt4-bromo-1,3-dimethyl-1H-pyrazole-5-carboxamideHCID 4766142—

Reaktionsschritte

To 4-bromo-1,3-dimethyl-1H-pyrazole-5-carboxylic acid (0.3 g, 1.370 mmol) in DMF (5 mL) were added ammonium chloride (0.293 g, 5.48 mmol), HOBt (0.222 g, 1.644 mmol), and EDC (0.368 g, 1.917 mmol), followed by N-ethyl-N-isopropylpropan-2-amine (1.193 mL, 6.85 mmol). The reaction mixture was stirred for 18 hours at room temperature. The reaction mixture was subsequently diluted with EtOAc, washed with brine, dried over Na2SO4, and concentrated to give the title compound, which was used without further purification (0.28 g).

Herkunft & Nachweise

DOI10.6084/m9.figshare.5104873.v1
PatentnummerUS09434743B2
Quelldatensatzuspto-grants-2016_09
ORD IDord-cc234f99af78493bbb90bc9a27ab3330
Quellennotizuspto-grants-2016_09