well with a wide substrate scope, delivering novel 1,2-fused benzimidazole derivatives in moderate to good yields. In addition, preliminary attempts on the asymmetric version of this reaction have been explored by using cinchona alkaloid-based tertiary amines.
已经建立了胺催化的 β'-乙酰氧基联烯酸酯与 1C,3N-双亲核试剂的 [3 + 3] 成环反应。在最佳反应条件下,这种操作简单的合成工艺适用于广泛的底物范围,以中等至良好的产率提供新型 1,2-稠合
苯并咪唑衍
生物。此外,还通过使用基于
金鸡纳
生物碱的叔胺对该反应的不对称形式进行了初步尝试。