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HuagongsheHuagongshe Chemie-Druckbericht · Nur für Forschungszwecke
HRID 338901Erstellt: 24. Oktober 2026

Diethyl Malonate → HCID 70983315, Verbindung

https://huagongshe.com/de/reaction/338901

Reaktionsgleichung

Beteiligte Stoffe

RolleNameHCIDEinwaage
EduktDiethyl MalonateHCID 7761—
EduktEthyl AcetateHCID 8857—
EduktCesium carbonateHCID 10796—
Edukt8-Bromo-2-methylquinolineHCID 4715030—
KatalysatorHCID 178418851HCID 178418851—
LösungsmittelWaterHCID 962—
Lösungsmittel1,4-DioxaneHCID 31275—
ProduktHCID 70983315HCID 7098331582,54%

Reaktionsschritte

A solution of 8-bromo-2-methylquinoline (2.00 g, 9.01 mmol), Pd(PtBu3)2 (0.23 g, 0.45 mmol), Cs2CO3 (11.74 g, 36.02 mmol) and diethyl malonate (2.73 mL, 18.01 mmol) in dioxane (25 mL) was heated at 118° C. in a sealed tube for 1 hour. After cooling to ambient temperature, ethyl acetate (30 mL) and water (15 mL) were added. The organic layer was separated, washed with brine, dried (sodium sulfate), filtered and concentrated under reduced pressure. The residue was purified by flash chromatography on silica gel (7:1 hexane/ethyl acetate) to give diethyl 2-(2-methylquinolin-8-yl)malonate (2.24 g, 82.54%) as an oil.

Herkunft & Nachweise

DOI10.6084/m9.figshare.5104873.v1
PatentnummerUS08889704B2
Quelldatensatzuspto-grants-2014_11
ORD IDord-860037163f144b3dbd39da5485ccfc21
Quellennotizuspto-grants-2014_11