cost-effective aryl source has been efficiently effected via Cu(OAc)2-catalyzed Chan-Lam coupling in assistance of tetramethylethylenediamine (TMEDA) in methanol and pyridine (Py) in dichloromethane, respectively, in air at room temperature. The diarylborinic acids could be well accommodated by the Chan-Lam coupling oxidative conditions containing a proper combination of bases and solvents. The steric
借助Cu(OAc)2催化的Chan-Lam偶联,借助
四甲基乙二胺(TME
DA)在
甲醇和
吡啶(Py)中的催化作用,已有效地实现了(苯)
咪唑和胺与二芳基
硼酸作为具有成本效益的芳基源的N-芳基化作用。室温下分别置于
二氯甲烷中。包含适当的碱和溶剂组合的Chan-Lam偶联氧化条件可以很好地容纳二芳基
硼酸。与电子因素相比,使用高阶芳基硼试剂时,空间位阻似乎对
铜催化的N-芳基化的影响更大,尤其是对于低反应性
苯胺和脂肪族胺而言。