Reaktion #1590385

Reaktionsgleichung

Toluene

3-chloro[1,4]benzodioxino[2,3-c]pyridazine

(E)-2-phenylvinylboronic acid

sodium carbonate

→

3-[(E)-2-phenylvinyl][1,4]benzodioxino[2,3-c]pyridazine

Ausbeute 49.2%

Lösungsmittel

Water

Reaktionsbedingungen

Aufarbeitung

1. 1
   workup.ADDITIONwere added at room temperature
2. 2
   Extraktionthe mixture was extracted with chloroform
3. 3
   WaschenThe organic layer was washed with saturated aqueous ammonium chloride solution and saturated brine
4. 4
   Trocknendried over anhydrous magnesium sulfate
5. 5
   Einengenthe solvent was concentrated under reduced pressure
6. 6
   WaschenThe obtained residue was washed with a mixed solvent of hexane and ethyl acetate
7. 7
   Filtrationfiltered
8. 8
   SonstigeThe obtained solid was dried under reduced pressure

Vorschrift

Toluene (10 ml) was added to 3-chloro[1,4]benzodioxino[2,3-c]pyridazine (600 mg), and (E)-2-phenylvinylboronic acid (480 mg), tetrakis(triphenylphosphine)palladium (315 mg) and 2M aqueous sodium carbonate solution (1.6 mL) were added at room temperature. The reaction mixture was stirred at 120° C. for 14 hr. Water was added and the mixture was extracted with chloroform. The organic layer was washed with saturated aqueous ammonium chloride solution and saturated brine, dried over anhydrous magnesium sulfate and the solvent was concentrated under reduced pressure. The obtained residue was washed with a mixed solvent of hexane and ethyl acetate and filtered. The obtained solid was dried under reduced pressure to give 3-[(E)-2-phenylvinyl][1,4]benzodioxino[2,3-c]pyridazine (386 mg).

Quelle