Methyl chloroformate → 2-Chloro-4-fluoro-methoxycarbonyloxybenzene

Reaktionsgleichung

Cl[C:2]([O:4][CH3:5])=[O:3].[Cl:6][C:7]1[CH:12]=[C:11]([F:13])[CH:10]=[CH:9][C:8]=1[OH:14].[OH-].[Na+]>O>[C:2](=[O:3])([O:4][CH3:5])[O:14][C:8]1[CH:9]=[CH:10][C:11]([F:13])=[CH:12][C:7]=1[Cl:6]

Komponenten

Versuchsvorschrift

Methyl chloroformate (77.3 g, 0.82 mol) was added dropwise to a −10° C. solution of 2-chloro-4-fluorophenol (100 g, 0.68 mol) and sodium hydroxide (32.8 g, 0.82 mol) in water (550 mL). After complete addition, the precipitated solid was collected by filtration and washed with water to give 2-chloro-4-fluorophenyl methyl carbonate (110 g, 79% yield). 1H NMR (300 MHz, DMSO-d6) δ 7.62 (dd, J=8.1, 2.7 Hz, 1H), 7.50 (dd, J=9.0, 5.4 Hz, 1H), 7.30 (td, J=8.1, 3.0 Hz, 1H), 3.86 (s, 3H); MS (ESI) m/z: 205.2 (M+H+).