Boron Trichloride → 1-(2-Hydroxy-5-(trifluoromethyl)phenyl)ethan-1-one
Reaktionsgleichung
C[O:2][C:3]1[CH:8]=[CH:7][C:6]([C:9]([F:12])([F:11])[F:10])=[CH:5][C:4]=1[C:13](=[O:15])[CH3:14].B(Cl)(Cl)Cl>ClCCl>[OH:2][C:3]1[CH:8]=[CH:7][C:6]([C:9]([F:10])([F:11])[F:12])=[CH:5][C:4]=1[C:13](=[O:15])[CH3:14]Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
2′-hydroxy-5′-trifluoromethyl-acetophenone was prepared using the following process (JACS, 2004, 126(3), 712-713). To a cooled solution of 2′-methoxy-5′-trifluoromethyl-acetophenone (650 mg, 2.98 mmol) at −78° C. in dry dichloromethane (40 ml) was slowly added a 1 M solution of boron trichloride in dichloromethane (7.5 ml, 7.5 mmol) keeping the internal temperature below −70° C. The brown-orange solution was slowly warmed up to room temperature within 2 hours.