3,5-difluoro-N-methoxy-N-methylbenzamide

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To an ice cooled mixture of 3,5 difluoro benzoic acid (2.0 g, 0.012 mol), 1-hydroxy-benzotriazole (HOBT, 2.5 g, 0.018 mol) and N,O-dimethylhydroxylamine HCl (2.35 g, 0.025 mol) in CH2Cl2(100 mL) was added triethylamine (5.0 mL, 0.036 mol) and followed by addition of 1,3-dimethylamino propyl-3-ethylcarbodiimide (EDC, 3.8 g, 0.019 mol). The mixture was allowed to warm to room temperature and continuously stir overnight. The reaction mixture was added EtOAc (300 mL) and then washed by diluted HCl solution, NaHCO3 and NaCl solution. The organic layer was collected and dried with Mg2SO4 and evaporated. The crude product was purified by column (0-50% EtOAc/Heptane) to give the title compound, 2.6 gm colorless oil. (100%) washed by diluted HCl solution, NaHCO3 and NaCl solution The organic layer was collected dried with Mg2SO4 evaporated The crude product was purified by column (0-50% EtOAc/Heptane)

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To an ice cooled mixture of 3,5 difluoro benzoic acid (2.0 g, 0.012 mol), 1-hydroxy-benzotriazole (HOBT, 2.5 g, 0.018 mol) and N,O-dimethylhydroxylamine HCl (2.35 g, 0.025 mol) in CH2Cl2(100 mL) was added triethylamine (5.0 mL, 0.036 mol) and followed by addition of 1,3-dimethylamino propyl-3-ethylcarbodiimide (EDC, 3.8 g, 0.019 mol). The mixture was allowed to warm to room temperature and continuously stir overnight. The reaction mixture was added EtOAc (300 mL) and then washed by diluted HCl solution, NaHCO3 and NaCl solution. The organic layer was collected and dried with Mg2SO4 and evaporated. The crude product was purified by column (0-50% EtOAc/Heptane) to give the title compound, 2.6 gm colorless oil. (100%) washed by diluted HCl solution, NaHCO3 and NaCl solution The organic layer was collected dried with Mg2SO4 evaporated The crude product was purified by column (0-50% EtOAc/Heptane)