反应详情

A solution of 5-amino-2-chloro-4-fluorophenol (100 mg, 0.619 mmol) in degassed dimethylacetamide (2 mL) was treated with potassium t-butoxide (83 mg, 0.743 mmol) and 5-chloro-2-cyanopyridine (86 mg, 0.619 mmol). The resultant mixture was heated to 80° C. overnight, then cooled to RT and diluted with water (10 mL). The mixture was extracted with EtOAc (30 mL). The organic phase was washed with water (3×30 mL) and brine (30 mL) dried (Na2SO4) and concentrated in vacuo to provide 5-(5-amino-2-chloro-4-fluorophenoxy)picolinonitrile as a dark oil which was used without further purification. MS (ESI) m/z: 264.0 (M+H+).

1. extractionThe mixture was extracted with EtOAc (30 mL)
2. washThe organic phase was washed with water (3×30 mL) and brine (30 mL)
3. dry with materialdried (Na2SO4)
4. concentrationconcentrated in vacuo