反应详情

[3-(4-benzyloxy-phenyl)-isoxazol-5-yl]-methanol (500 mg, 1.77 mmol) was dissolved in 10 ml of THF, to which solution was added 1,1′-carbonyldiimidazole (576 mg, 3.55 mmol), and stirred at room temperature for 1 hour. The THF was distilled off under reduced pressure and extracted three times with water and ethyl acetate. An obtained organic layer was distilled under reduced pressure and recrystallized from hexane/ethyl acetate (1/4) conditions to obtain imidazole-1-carboxylic acid 3-(4-benzyloxy-phenyl)-isoxazol-5-ylmethyl ester as a desired solid compound.

1. distillationThe THF was distilled off under reduced pressure
2. extractionextracted three times with water and ethyl acetate
3. distillationAn obtained organic layer was distilled under reduced pressure
4. customrecrystallized from hexane/ethyl acetate (1/4) conditions