反应详情

A suspension of 5-(benzothiazol-6-yl)-1,3,4-oxadiazole-2-thiol (235 mg, 1.00 mmol), 3-(trifluoromethyl)benzyl chloride (0.186 mL, 1.20 mmol), and potassium carbonate (207 mg, 1.50 mmol) in N,N-dimethylformamide (5 mL) was stirred at room temperature for 5 hr. The reaction mixture was diluted with ethyl acetate, washed with water and saturated brine, dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The residue was purified by basic silica gel column chromatography (tetrahydrofuran) and recrystallized from hexane/tetrahydrofuran to give the title compound (321 mg, yield 82%) as colorless crystals.

1. washwashed with water and saturated brine
2. dry with materialdried over anhydrous magnesium sulfate
3. concentrationconcentrated under reduced pressure
4. customThe residue was purified by basic silica gel column chromatography (tetrahydrofuran)
5. customrecrystallized from hexane/tetrahydrofuran