Реакция #640524

Уравнение реакции

4-(1H-benzimidazol-2-yl)-furazan-3-yl-N-(2-methoxycarbonylethyl)-amine

potassium carbonate

4-chlorophenacyl bromide

→

title compound

4-[1-(4-Chlorophenacyl)-1H-benzimidazol-2-yl]-furazan-3-yl-N-(2-methoxycarbonylethyl)-amine

Растворители

DMF

ethyl acetate

Условия реакции

Обработка

1. 1
   Промывкаwashed with water
2. 2
   Сушкаdried over sodium sulphate
3. 3
   ФильтрацияFiltration of the sodium sulphate, concentration of the filtrate under reduced pressure and chromatography of the residue on silicagel

Методика

A suspension of 4-(1H-benzimidazol-2-yl)-furazan-3-yl-N-(2-methoxycarbonylethyl)-amine (0.052 g, 0.181 mmol), potassium carbonate (0.062 g, 0.452 mmol) and 4-chlorophenacyl bromide (0.047 g, 0.199 mmol) in DMF (5 ml) is stirred at room temperature for 16 hours. The reaction mixture is diluted with ethyl acetate, washed with water and dried over sodium sulphate. Filtration of the sodium sulphate, concentration of the filtrate under reduced pressure and chromatography of the residue on silicagel using hexane-ethyl acetate as eluent gives the title compound as hygroscopic solid of undefined melting point. 1H-NMR (400 MHz, d6-DMSO): 8.14 (d, 2H); 7.87 (m, 2H); 7.41 (m, 2H); 7.32 (d, 2H); 7.29 (t, 1H); 6.37 (s, 2H); 3.63 (m, 2H); 3.61 (s, 3H); 2.76 (t, 2H).

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