N(OC(C)(C)C)=O.N[C:9]1[CH:10]=[CH:11][C:12]([O:17][C:18]([F:21])([F:20])[F:19])=[C:13]([CH2:15][OH:16])[CH:14]=1.[ClH:22]>C(#N)C.[Cu](Cl)Cl>[Cl:22][C:9]1[CH:10]=[CH:11][C:12]([O:17][C:18]([F:21])([F:20])[F:19])=[C:13]([CH2:15][OH:16])[CH:14]=1t-Butyl nitrite (2.49 g, 24.2 mmol), copper (II) chloride (2.71 g, 20.2 mmol), and acetonitrile (100 mL) were added to a round-bottom flask. The resulting mixture was cooled to 0° C. (5-Amino-2-trifluoromethoxy-phenyl)-methanol (1.67 g, 8.1 mmol) in acetonitrile (10 mL) was slowly added to the reaction over a period of 5 min. The reaction was warmed up to room temperature and stirred overnight. The mixture was then poured into 20% HCl (100 mL) and extracted with ether (100 mL). The organic layer was washed with 20% HCl (100 mL) and dried over MgSO4. The ether was removed in vacuo and the residue was chromatographed with 4:1 hexanes:EtOAC to give 1.2 g (66%) of (5-chloro-2-trifluoromethoxy-phenyl)-methanol as a yellow solid.
Wird geladen…
