反应详情

温度

-78 °C

n-BuLi (1.2 equivalents in 175 μl hexane) is added to a solution of 1-(1,3-benzodioxol-5-yl)-N-(1,3-benzodioxol-5-ylmethyl)-N-[(1-butyl-4-phenyl-1H-imidazol-5-yl)methyl]methanamine (118 mg), obtained as a minor product in Example 2, step 4, in 10 mL anhydrous THF under N2 at −78° C. The resulting mixture is stirred at −78° C. for 1 hour. Ac2O (118.4 mg, 1.2 equivalents) is added. The reaction mixture is stirred at −78° C. for 2 more hours, warned to room temperature, and stirred overnight. The reaction is quenched with 5 mL of H2O and diluted with 20 mL ethyl acetate. The organic phase is collected, washed with brine, dried and concentrated. Purification via silica gel chromatography provides the title compound (Compound 8).

1. stirringThe reaction mixture is stirred at −78° C. for 2 more hours
2. customwarned to room temperature
3. stirringstirred overnight
4. customThe reaction is quenched with 5 mL of H2O
5. additiondiluted with 20 mL ethyl acetate
6. customThe organic phase is collected
7. washwashed with brine
8. customdried
9. concentrationconcentrated
10. customPurification via silica gel chromatography