Thionyl Chloride → 2-(5-Bromo-2-methoxyphenyl)-4,4-dimethyl-4,5-dihydro-1,3-oxazole
Reaktionsgleichung
S(Cl)(Cl)=O.O[CH2:6][C:7]([NH:10][C:11](=[O:21])[C:12]1[CH:17]=[C:16]([Br:18])[CH:15]=[CH:14][C:13]=1[O:19][CH3:20])([CH3:9])[CH3:8]>C(OCC)C>[Br:18][C:16]1[CH:15]=[CH:14][C:13]([O:19][CH3:20])=[C:12]([C:11]2[O:21][CH2:6][C:7]([CH3:8])([CH3:9])[N:10]=2)[CH:17]=1Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
Thionyl chloride (36.5 ml) was added dropwise to N-(1-hydroxy-2-methylpropan-2-yl)-5-bromo-2-methoxybenzamide (36.34 g). The resulting solution was stirred for 15 minutes and mixed with diethyl ether. The diethyl ether was decanted off and the resulting residue dissolved in 20% NaOH solution. The aqueous solution was extracted with diethyl ether. The extract was washed with brine, dried (MgSO4) and evaporated to give 2-(5-bromo-2-methoxyphenyl)-4,4-dimethyl-4,5-dihydrooxazole (32.02 g).