Ethanol → HCID 54141100, Verbindung

Reaktionsgleichung

[OH-].[Na+].[Cl:3][C:4]1[CH:13]=[CH:12][C:7]([C:8]([O:10]C)=[O:9])=[C:6]([S:14][CH3:15])[C:5]=1[C:16]([CH3:18])=[CH2:17].C(O)C>O>[Cl:3][C:4]1[CH:13]=[CH:12][C:7]([C:8]([OH:10])=[O:9])=[C:6]([S:14][CH3:15])[C:5]=1[C:16]([CH3:18])=[CH2:17]

Komponenten

Versuchsvorschrift

A solution of sodium hydroxide (7.0 g) in water was added to methyl 4-chloro-3-isopropenyl-2-(methylsulphenyl)benzoate (7.3 g) and the resulting mixture was heated at reflux for 2 hours. Ethanol was added and the mixture was heated at reflux for 1 hour. The ethanol was removed by evaporation and the aqueous residue was acidified to pH 1. It was extracted with ethyl acetate, washed with water, dried (MgSO4) and filtered. The filtrate was evaporated to dryness to give 4-chloro-3-isopropenyl-2-(methylsulphenyl)benzoic acid (6.15 g) NMR (CDCl3) 2.05 (s,3H), 2.4 (s,3H), 4.85 (s, 1H), 5.35 (s,1H), 7.45 (d,1H), 7.85 (d,1H).