反应详情

0.057 g of sodium hydride (as a 55% w/w dispersion in mineral oil) was added to a solution of 0.478 g of methyl 1-[(2'-t-butoxycarbonylbiphenyl-4-yl)methyl]-2-butyl-4-hydroxymethylimidazole-5-carboxylate (prepared as described in Example 1) in 5 ml of N,N-dimethylacetamide, and the resulting mixture was stirred at room temperature for 30 minutes. At the end of this time, 0.125 ml of iodomethane were added, and the reaction mixture was stirred at 50° C. for 3 hours. The reaction mixture was then mixed with ethyl acetate and water. The ethyl acetate layer was separated and dried over anhydrous magnesium sulfate; the solvent was then removed by distillation under reduced pressure. The resulting residue was purified by column chromatography through silica gel, using a 1:1 by volume mixture of ethyl acetate and methylene chloride as the eluent, to give 0.30 g of the title compound as a gum.

1. stirringthe reaction mixture was stirred at 50° C. for 3 hours
2. customThe ethyl acetate layer was separated
3. dry with materialdried over anhydrous magnesium sulfate
4. customthe solvent was then removed by distillation under reduced pressure
5. customThe resulting residue was purified by column chromatography through silica gel
6. additionby volume mixture of ethyl acetate and methylene chloride as the eluent