Sodium Dithionite → 2-Amino-6-chloro-4-(trifluoromethyl)phenol

Reaktionsgleichung

S(S([O-])=O)([O-])=O.[Na+].[Na+].[Cl:9][C:10]1[CH:15]=[C:14]([C:16]([F:19])([F:18])[F:17])[CH:13]=[C:12]([N+:20]([O-])=O)[C:11]=1[OH:23]>C(O)C.O>[NH2:20][C:12]1[CH:13]=[C:14]([C:16]([F:17])([F:18])[F:19])[CH:15]=[C:10]([Cl:9])[C:11]=1[OH:23]

Komponenten

Versuchsvorschrift

Solid sodium dithionite (10 g) was added in portions to a stirred solution of 2-chloro-6-nitro-4-trifluoromethylphenol (4.5 g) in a mixture of ethanol (20 ml) and water (30 ml). The solution was stirred for 2 hours, left overnight, filtered, and evaporated. The residue was mixed with toluene and the toluene removed under reduced pressure. The residue was extracted with boiling chloroform (3×100 ml) and the chloroform extracts evaporated to give a yellow oil identified as the required substituted phenol.