反应详情

A solution of 2.20 g lithium hydroxide in 175 ml of water is added to a solution of 3.50 g methyl 2-bromo-5-(trans-2-methoxy-vinyl)-3H-imidazole-4-carboxylate in 140 ml of tetrahydrofuran. The solution is stirred for 4 h at ambient temperature. Then 92 ml aqueous 1 M hydrochloric acid are added, and the solution is cooled in the ice bath. The precipitate is separated off, washed with water and dried.

1. customThe precipitate is separated off
2. washwashed with water
3. customdried