Palladium(II), Rhodium(I), and Iridium(I) Complexes Containing
<i>O</i>
‐Functionalized 1,2,3‐Triazol‐5‐ylidene Ligands
作者:René Pretorius、Ava McDonald、Ligia Regueira Beltrão da Costa、Helge Müller‐Bunz、Martin Albrecht
DOI:10.1002/ejic.201900724
日期:2019.10.31
towards the synthesis of palladium(II), rhodium(I) and iridium(I) complexes bearing O‐functionalized triazolylidene ligands are reported. Mono‐ and dimetallic triazolylidene palladium complexes with ether, acetate, and hydroxy functionalities were synthesized using silver transmetalation. Selective formation of either the mono‐ or dimetallic palladium chlorido complexes was controlled by the amount of
报道了带有O-官能化三唑基亚烷基配体的钯(II),铑(I)和铱(I)配合物的合成策略。利用银金属转移合成了具有醚,乙酸盐和羟基官能团的单金属和双金属三唑基钯配合物。单金属或双金属钯氯离子络合物的选择性形成受金属化步骤中用作辅助的NMe 4 Cl的量控制,因为过量的卤化物会将钯前体捕获为未反应的钯[PdCl 4 ] 2 –。可以通过银金属转移协议访问具有醚和乙酸酯取代基的类似铑(I)和铱(I)配合物,而醇盐连接的三唑亚烷基配合物则需要碱介导的金属化程序。烷氧基官能化的C,O-二齿螯合三唑亚基配体是半不稳定的,金属环的打开和关闭分别由酸和碱的存在触发。这种配体的多功能性对于键活化催化是有吸引力的。