tetraphosphine N,N,N′,N′‐tetra(diphenylphosphinomethyl)‐1,2‐ethylenediamine (L1) associated with [Pd(η3‐C3H5)Cl]2 affords an efficient catalyst for Suzuki–Miyaura coupling of 3‐pyridineboronic acid with heteroaryl bromides. Reaction could be performed with as little as 0.02 mol% catalyst and a high turnover number of 2500 is obtained. A wide range of substrates is investigated with satisfactory yields, and good
容易制备的tetraphosphine Ñ,Ñ,Ñ ',Ñ ' -四(
二苯基膦基)-1,2-
乙二胺(L1)与[
钯(η相关的3 -C 3 H ^ 5)CL] 2为3-
吡啶硼酸与杂芳基
溴化物的Suzuki-Miyaura偶联提供了一种有效的催化剂。可以用低至0.02 mol%的催化剂进行反应,并获得2500的高周转率。以令人满意的产率研究了多种底物,并显示了与
氨基取代的
吡啶和未保护的
吲哚的良好相容性。该方案也可以成功地用于杂芳基
溴化物与3-
噻吩硼酸的反应。这种Pd-四膦催化剂可有效抑制杂芳基的中毒作用,并显示出良好的稳定性和寿命。版权所有©2013 John Wiley&Sons,Ltd.