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Stoichiometrically Activated Catalysts for Ethylene Tetramerization using Diphosphinoamine-Ligated Cr Tris(hydrocarbyl) Complexes
Organometallics ( IF 2.5 ) Pub Date : 2017-10-23 00:00:00 , DOI: 10.1021/acs.organomet.7b00706 Nathanael A. Hirscher 1 , Theodor Agapie 1
Organometallics ( IF 2.5 ) Pub Date : 2017-10-23 00:00:00 , DOI: 10.1021/acs.organomet.7b00706 Nathanael A. Hirscher 1 , Theodor Agapie 1
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A new, stoichiometric activation mode is presented for Cr-PNP (PNP = diphosphinoamine) complexes for ethylene tetramerization catalysis. To access suitable precatalysts, two robust Cr(III) multiaryl compounds were synthesized as THF adducts. These complexes are supported by a facially coordinated bis(aryl) ligand with an additional ether donor. From these precursors, Cr-PNP tris(hydrocarbyl) complexes were synthesized. Using 1 equiv of Brønsted acid as an activator, an active species for the catalytic tetramerization of ethylene was produced, without the need for excess alkylaluminum reagents.
中文翻译：
使用二膦基胺连接的Cr三（烃基）配合物的乙烯四聚反应的化学计量活化催化剂
提出了一种新的化学计量活化方式，用于乙烯四聚催化的Cr-PNP（PNP =二膦胺）配合物。为了获得合适的预催化剂，合成了两种坚固的Cr（III）多芳基化合物作为THF加合物。这些配合物由具有额外醚供体的面部配位双（芳基）配体支撑。由这些前体合成了Cr-PNP三（烃基）配合物。使用1当量的布朗斯台德酸作为活化剂，无需额外的烷基铝试剂即可生产出用于乙烯催化四聚的活性物质。
更新日期：2017-10-23
中文翻译：
使用二膦基胺连接的Cr三（烃基）配合物的乙烯四聚反应的化学计量活化催化剂
提出了一种新的化学计量活化方式，用于乙烯四聚催化的Cr-PNP（PNP =二膦胺）配合物。为了获得合适的预催化剂，合成了两种坚固的Cr（III）多芳基化合物作为THF加合物。这些配合物由具有额外醚供体的面部配位双（芳基）配体支撑。由这些前体合成了Cr-PNP三（烃基）配合物。使用1当量的布朗斯台德酸作为活化剂，无需额外的烷基铝试剂即可生产出用于乙烯催化四聚的活性物质。
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