Water → Tert-butyl 2-[(tert-butoxycarbonyl)oxy]-6-[({4'-[(methoxycarbonyl)methyl]-2'-nitro-1,1'-biphenyl-4-yl}oxy)methyl]-3-(trifluoromethyl)benzoate

Participants

Reaction Conditions

Reaction Steps

Potassium carbonate (147 mg, 1.06 mmol) was added to a solution of methyl (4′-hydroxy-2-nitro-1,1′-biphenyl-4-yl)acetate (203 mg, 0.71 mmol) obtained in Example (37-1) and tert-butyl 6-(bromomethyl)-2-[(tert-butoxycarbonyl)oxy]-3-(trifluoromethyl)benzoate (330 mg, 0.781 mmol) obtained in Example (28-5) in acetone (15 ml), and the mixture was stirred at 70° C. for 8 hours. The reaction mixture was poured into water and extracted with ethyl acetate. The organic layer was successively washed with water and a saturated aqueous NaCl solution and dried with anhydrous sodium sulfate. The residue obtained by removing the solvent under reduced pressure was subjected to silica gel column chromatography (eluting solvent: hexane/ethyl acetate=4/1) to give crude tert-butyl 2-[(tert-butoxycarbonyl)oxy]-6-[({4′-[(methoxycarbonyl)methyl]-2′-nitro-1,1′-biphenyl-4-yl}oxy)methyl]-3-(trifluoromethyl)benzoate.

Provenance & Evidence