HCID 14497520, Verbindung → 1-(4-Methoxyphenyl)-1H-pyrazole
Reaktionsgleichung
C[Mg]Br.ClC1C=CC([C:11]2[N:15]([C:16]3[CH:21]=[CH:20][C:19]([O:22][CH3:23])=[CH:18][CH:17]=3)[N:14]=[C:13](CCC=O)[CH:12]=2)=CC=1>CCOCC>[CH3:23][O:22][C:19]1[CH:18]=[CH:17][C:16]([N:15]2[CH:11]=[CH:12][CH:13]=[N:14]2)=[CH:21][CH:20]=1Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
To a solution of methyl magnesium bromide (MeMgBr) (2.20 ml, 7.04 mM) in Et2O (15 ml) at 0° C. was added a solution of the aldehyde 11 (1.60 g, 4.69 mM) in Et2O (70 ml) dropwise over a 30 minute period. After stirring for 1 hour the reaction was quenched with a saturated, aqueous NH4Cl solution. The reaction mixture was partitioned between EtOAc and H2O. The EtOAc solution was dried (MgSO4), filtered, and concentrated in vacuo. Chromatography (65 g, Baker 40 gm silica gel) of the residue with Et2O as eluent afforded 20 (1.33 g, 79%) as a clear light yellow oil.