Novel phosphite palladium complexes and their application in C–P cross-coupling reactions
作者:Jie Li、Martin Lutz、Anthony L. Spek、Gerard P.M. van Klink、Gerard van Koten、Robertus J.M. Klein Gebbink
DOI:10.1016/j.jorganchem.2010.08.026
日期:2010.11
2′-biphenol have been synthesized in order to study the synthesis of the corresponding palladium(II) complexes starting from different Pd precursors. Novel bis-phosphite palladium complex 1 [PdCl2(L)2] (L = dibenzo[d,f][1,3,2]dioxaphosphepin, 6-phenoxy), C,P-chelate bonded monophosphite palladium complex 2 [Pd(κ2-L)(μ-Cl)]2, and PCP-pincer palladium complex 3 have been prepared from these ligands in promising
为了研究从不同的Pd前体开始的相应钯(II)配合物的合成,已经合成了基于2,2'-联苯酚的单亚磷酸酯和1,3-双亚磷酸酯芳烃配体。新型双亚磷酸酯钯配合物1 [PdCl 2(L)2 ](L =二苯并[d,f] [1,3,2]二氧杂磷鎓,6-苯氧基),C,P-螯合物键合单亚磷酸钯配合物2 [Pd (κ 2 -L)(μ-Cl)的] 2,和PCP-钳形钯络合物3已经从这些配位体在有为优异的产率(50-95%)制备。此外,复合物1和3X射线晶体结构的确定已经表征了。据报道,在非常温和的条件下,2,6-双亚磷酸酯夹心钯(II)配合物3在二苯基膦-硼烷与各种芳基碘化物之间的C–P交叉偶联中的应用。动力学研究表明3仅充当预催化剂,而Pd纳米颗粒是实际的催化活性物质。