Hydrochloric Acid → 5-Chloro-2-(trifluoromethoxy)benzyl alcohol

t-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.

1. additionwas slowly added to the reaction over a period of 5 min
2. extractionextracted with ether (100 mL)
3. washThe organic layer was washed with 20% HCl (100 mL)
4. dry with materialdried over MgSO4
5. customThe ether was removed in vacuo
6. customthe residue was chromatographed with 4:1 hexanes

ORD 기록

ord-8d2751ff9c3c4f11b4617cd21b0da05f

출처 데이터셋

uspto-grants-2009_10

DOI

10.6084/m9.figshare.5104873.v1

특허 번호

US07601714B2