反应详情

0.015 mL of N,N-dimethylformamide was added to a mixed solution of 2.0 mL of methylene chloride and 0.024 mL of oxalyl chloride containing 47 mg of 3-(1H-pyrrol-1-yl)benzoic acid and stirred at room temperature for 30 minutes, 71 mg of tert-butyl 2-amino-4-phenoxybenzoate and 0.090 mL of triethylamine were added to the reaction mixture at room temperature sequentially and stirred at the same temperature for 30 minutes. Ethyl acetate and 1.0 mol/L hydrochloric acid were added to the reaction mixture. The organic layer was separated and dried over anhydrous magnesium sulfate after washed with a saturated sodium chloride aqueous solution, and the solvent was evaporated under reduced pressure. The obtained residue was purified with silica gel column chromatography [PSQ100B (spherical) manufactured by Fuji Silysia Chemical Ltd., eluent; hexane:ethyl acetate=40:1] to obtain 31 mg of tert-butyl 4-phenoxy-2-(3-(1H-pyrrol-1-yl)benzamido)benzoate as white solid.

1. stirringstirred at the same temperature for 30 minutes
2. customThe organic layer was separated
3. dry with materialdried over anhydrous magnesium sulfate
4. washafter washed with a saturated sodium chloride aqueous solution
5. customthe solvent was evaporated under reduced pressure
6. customThe obtained residue was purified with silica gel column chromatography [PSQ100B (spherical) manufactured by Fuji Silysia Chemical Ltd., eluent; hexane:ethyl acetate=40:1]