作者:Xufeng Ma、Yao Liu、Zhichao Wang、Xing Zhao、Puke Mi、Jun Zhang
DOI:10.1016/j.jorganchem.2021.122175
日期:2022.1
A new class of diphosphinoindole ligands have been developed. Upon activation with MMAO-3A, Cr catalysts supported by these bisphosphine ligands are active for ethylene tri-/tetramerization. The best result was achieved by using the bisphosphine ligand containing a phenyl group at C3 position of indole, giving a high activity of up to 364 kg/(g Cr/h) with a total selectivity of up to 72% toward 1-hexene
已经开发了一类新的二膦基吲哚配体。在用 MMAO-3A 活化后,由这些双膦配体负载的 Cr 催化剂对乙烯三聚/四聚具有活性。最好的结果是通过在吲哚的 C3 位使用含有苯基的双膦配体获得的,其活性高达 364 kg/(g Cr/h),对 1-己烯的总选择性高达 72%。 23.5%) 和 1-辛烯 (48.4%)。合成了具有代表性的四羰基铬配合物,并通过单晶 X 射线衍射对其进行了结构表征。