potassium carbonate; n,n-dimethyl-formamide;
reactants are commercially availlable.
general procedure: corresponding hetrocyclic compounds (0.01 mol), 1,2-dibromoethane (0.01 mol) and anhydrous potassium carbonate (1 g, 0.01 mol) in dry dimethyl formamide (50 ml) were heated under re flux for 6-8 hours, then cooled to room temperature and poured into crushed ice (? 100 g). the precipitated product was filtered off, washed with water, dried and recrystallized from ethanol. differen t hetrocyclic compounds namely methylpiperazine, ethylpiperazine, triazole, imidazole, indole, benzimidazole and 2-amino pyridine were yielded.
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