Pyridine → N-(6-{[({[3-(dimethylamino)phenyl](1-methyl-1H-tetrazol-5-yl)methylene}amino)oxy]methyl}pyridin-2-yl)-2,2-difluoro-2-phenoxyacetamide

Participants

Reaction Steps

To a stirred solution of 6-{[({[3-(dimethylamino)phenyl](1-methyl-1H-tetrazol-5-yl)methylene}amino)oxy]methyl}pyridin-2-amine (90 mg, 0.26 mmol) in dry 1,4-dioxane (10 mL) were added pyridine (31 μL, 0.38 mmol) and 2,2-difluoro-2-phenoxyacetyl chloride (105 mg, 0.51 mmol). The reaction mixture was stirred at room temperature for 25 h, then poured into aq. NaHCO3 (10 g/L, 30 mL). After extraction with ethyl acetate (50 mL), the organic layer was dried (MgSO4) and concentrated in vacuo. Purification on silica gel afforded N-(6-{[({[3-(dimethylamino)phenyl](1-methyl-1H-tetrazol-5-yl)methylene}amino)oxy]methyl}pyridin-2-yl)-2,2-difluoro-2-phenoxyacetamide as an oil [123 mg, yield 88%; HPLC/MS:m/z=523 (M+H); log P(HCOOH)=4.14].

Provenance & Evidence