New Tantalum Ligand-Free Catalyst System for Highly Selective Trimerization of Ethylene Affording 1-Hexene: New Evidence of a Metallacycle Mechanism
New Tantalum Ligand-Free Catalyst System for Highly Selective Trimerization of Ethylene Affording 1-Hexene: New Evidence of a Metallacycle Mechanism
复制标题
DOI：
10.1021/ja8100837
复制
发表时间：
2009-04-22
影响因子：
15
通讯作者：
Mashima, Kazushi
中科院分区：
文献类型：
--
作者：
Arteaga-Mueller, Rocio;Tsurugi, Hayato;Mashima, Kazushi
Mild and salt-free reduction of MCl5 (M = Nb, Ta) has been achieved by using 3,6-bis(trimethylsilyl)-1,4-hexadiene derivatives as reducing reagents. The salt-contact-free low-valent TaCl3 exhibits high catalytic activity for the trimerization of ethylene to 1-hexene (>1000 TOF) with excellent selectivity (>98%). This salt-free tantalum system enables us to observe new evidence for a metallacycle mechanism.
