Selective phenol alkylation for an improved synthesis of 2-arylbenzimidazole H4 receptor ligands
作者:Brad M. Savall、Jill R. Fontimayor、James P. Edwards
DOI:10.1016/j.tetlet.2009.03.033
日期:2009.5
free benzimidazole NH was investigated and found to be highly dependent on the substitution of the benzimidazole and phenol rings. The modification of our original synthesis of 2-arylbenzimidazole H4 receptor ligands has resulted in improved yields and ease of isolation of final products.
研究了在游离苯并咪唑NH存在下苯酚OH的烷基化反应,发现该反应高度依赖于苯并咪唑和苯酚环的取代。我们对2-芳基苯并咪唑H 4受体配体的原始合成方法进行了改进,从而提高了收率,并易于分离最终产物。