<i>N</i>,<i>N</i>-Diphospholylamines-A New Family of Ligands for Highly Active, Chromium-Based, Selective Ethene Oligomerisation Catalysts
作者:Tom E. Stennett、Thomas W. Hey、Liam T. Ball、Stephanie R. Flynn、James E. Radcliffe、Claire L. McMullin、Richard L. Wingad、Duncan F. Wass
DOI:10.1002/cctc.201300306
日期:2013.10
been synthesised. The new compounds have been screened for chromium‐catalysed, selective ethene oligomerisation by in situ combination with CrCl3(thf)3 and methylaluminoxane (MAO). The ligands derived from 2,3,4,5‐tetraethylphosphole produce highly active catalysts for ethene oligomerisation, which show excellent selectivity to C6 and C8 linear α‐olefins. Complexes of the form [Cr(CO)4L] were synthesised
合成了一系列新的含2、3、4、5-四乙基磷或二苯并磷部分的二磷氮烷(PNP)配体。通过与CrCl 3(thf)3和甲基铝氧烷(MAO)原位结合,筛选了新化合物的铬催化选择性乙烯低聚反应。衍生自2,3,4,5-四乙基磷腈的配体可产生高活性的乙烯低聚催化剂,对C 6和C 8线性α-烯烃具有极好的选择性。合成了[Cr(CO)4 L]形式的配合物,并通过红外光谱和单晶XRD研究。变温NMR光谱用于研究受限的P具有庞大氮取代基的化合物中的N旋转。