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HuagongsheHuagongshe Chemie-Druckbericht · Nur für Forschungszwecke
HRID 2267356Erstellt: 25. Oktober 2026

Acetonitrile → 2-Chloro-4-(5-methylthiophen-2-yl)pyrimidine

https://huagongshe.com/reaction/2267356

Reaktionsgleichung

Beteiligte Stoffe

RolleNameHCIDEinwaage
EduktAcetonitrileHCID 6342—
EduktSodium CarbonateHCID 10340—
Edukt2,4-DichloropyrimidineHCID 77531—
Edukt(5-Methylthiophen-2-yl)boronic acidHCID 2734374—
KatalysatorHCID 178418476HCID 178418476—
LösungsmittelMethanolHCID 887—
LösungsmittelDichloromethaneHCID 6344—
Produkt2-Chloro-4-(5-methylthiophen-2-yl)pyrimidineHCID 57428835—

Reaktionsschritte

A solution of 0.20 g (1.4 mmol) of 5-methyl-2-thiopheneboronic acid, 0.21 g (1.4 mmol) of 2,4-dichloropyrimidine and 49 mg (0.070 mmol) of bis(triphenylphosphine)palladium(II) chloride in 2 mL of a 2 M Na2CO3 aqueous solution and 5 mL of MeCN was heated in a microwave for 10 min at 160° C., then cooled to rt, diluted with CH2Cl2 and MeOH, and dried over MgSO4. The organic solvent was removed in vacuo, and the resulting solid was purified by flash chromatography eluting with a linear gradient of 50% EtOAc in hexane to neat EtOAc to deliver the title compound. MS (M+H)+ 211.

Herkunft & Nachweise

DOI10.6084/m9.figshare.5104873.v1
PatentnummerUS07858785B2
Quelldatensatzuspto-grants-2010_12
ORD IDord-19d00f4dd2d54f4ba9a7c8abb486528f
Quellennotizuspto-grants-2010_12