반응 #640528

반응 방정식

4-(1H-benzimidazol-2-yl)-furazan-3-ylamine

potassium carbonate

1-chloro-4-phenyl-but-3-en-2-one

→

title compound

E-1-[2-(4-Aminofurazan-3-yl)-benzimidazol-1-yl]-4-phenyl-but-3-en-2-one

용매

DMF

ethyl acetate

반응 조건

후처리

1. 1
   세척washed with water
2. 2
   건조dried over sodium sulphate
3. 3
   여과Filtration of the sodium sulphate, concentration of the filtrate under reduced pressure and chromatography of the residue on silicagel

실험 절차

A suspension of 4-(1H-benzimidazol-2-yl)-furazan-3-ylamine (0.275 g, 1.37 mmol), potassium carbonate (0.472 g, 3.42 mmol) and 1-chloro-4-phenyl-but-3-en-2-one (0.297 g, 1.64 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 a yellowish solid, m.p. 176-180° C.

출처