Synthesis, structure and reactivity of 1-(4-nitrobenzyl)-2-chloromethyl benzimidazole
作者:Amanda E. Sparke、Christopher M. Fisher、Ryan E. Mewis、Stephen J. Archibald
DOI:10.1016/j.tetlet.2010.07.010
日期:2010.9
synthesis of 1-(4-nitrobenzyl)-2-chloromethyl benzimidazole, which undergoes a nucleophilic substitution with pyridine in the absence of additional base, is reported. The key steps are the reaction of 1,2-phenylenediamine to give exclusively the mono-substituted product and the avoidance of minor by-products via the use of glycolic acid for the cyclisation step. The X-ray structures of 1-(4-nitrobenzyl)-2-chloromethyl
据报道1-(4-硝基苄基)-2-氯甲基苯并咪唑的合成,其在不存在另外的碱的情况下被吡啶亲核取代。关键步骤是1,2-苯二胺的反应,仅得到单取代的产物,通过在环化步骤中使用乙醇酸避免副产物的产生。给出了1-(4-硝基苄基)-2-氯甲基苯并咪唑氯化物和1- [1-(4-硝基苄基)苯并咪唑-2-基甲基]吡啶鎓氯化物的X射线结构。