反应详情

1.3 mL of methylene chloride, 1.3 μL of N,N-dimethylformamide and 0.031 mL of oxalyl chloride were added sequentially to 69 mg of 6-(piperidin-1-yl)pyridine-3-carboxylic acid at room temperature, and stirred at the same temperature for 1 hour. The reaction mixture was added to a mixed solution of 57 mg of tert-butyl 2-amino-4-phenoxybenzoate, 3.7 mL of methylene chloride and 0.22 mL of triethylamine and stirred at room temperature for 2 hours. A saturated sodium hydrogen carbonate aqueous solution was added to the reaction mixture, and the organic layer was separated, and the solvent was evaporated under reduced pressure. The obtained residue was purified with silica gel column chromatography [Flash Tube 2008 manufactured by Trikonex Company, eluent; hexane; ethyl acetate=8:1] to obtain tert-butyl 4-phenoxy-2-(6-(piperidin-1-yl)pyridine-3-carboxamido)benzoate.

1. stirringstirred at room temperature for 2 hours
2. customthe organic layer was separated
3. customthe solvent was evaporated under reduced pressure
4. customThe obtained residue was purified with silica gel column chromatography [Flash Tube 2008 manufactured by Trikonex Company, eluent; hexane; ethyl acetate=8:1]