Warning: Undefined array key "mm" in /www/wwwroot/www.ai-bt.com/si.php on line 10 Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /www/wwwroot/www.ai-bt.com/si.php on line 10 New tantalum ligand-free catalyst system for highly selective trimerization of ethylene affording 1-hexene: new evidence of a metallacycle mechanism.

Literature DB >> 20560633

New tantalum ligand-free catalyst system for highly selective trimerization of ethylene affording 1-hexene: new evidence of a metallacycle mechanism.

Rocío Arteaga-Müller¹, Hayato Tsurugi, Teruhiko Saito, Masao Yanagawa, Seiji Oda, Kazushi Mashima.

Abstract

Mild and salt-free reduction of MCl(5) (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 TaCl(3) 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.

Entities: Chemical

Year: 2009 PMID： 20560633 DOI： 10.1021/ja8100837

Source DB: PubMed Journal: J Am Chem Soc ISSN： 0002-7863 Impact factor: 15.419

Keyword Cloud
Cited

8 in total

1. Synthesis of Pyridylimido Complexes of Tantalum and Niobium by Reductive Cleavage of the N═N Bond of 2,2'-Azopyridine: Precursors for Early-Late Heterobimetallic Complexes.

Authors: Kento Kawakita; Yuya Kakiuchi; Evan P Beaumier; Ian A Tonks; Hayato Tsurugi; Kazushi Mashima
Journal: Inorg Chem Date: 2019-09-25 Impact factor: 5.165

2. In Situ Catalyst Generation and Benchtop-Compatible Entry Points for Ti^II/Ti^IV Redox Catalytic Reactions.

Authors: Zachary W Davis-Gilbert; Kento Kawakita; Daniel R Blechschmidt; Hayato Tsurugi; Kazushi Mashima; Ian A Tonks
Journal: Organometallics Date: 2018-09-06 Impact factor: 3.876

3. Chain- and Regioselective Ethylene and Styrene Dimerization Reactions Catalyzed by a Well-Defined Cationic Ruthenium-Hydride Complex: New Insights on the Styrene Dimerization Mechanism.

Authors: Do W Lee; Chae S Yi
Journal: Organometallics Date: 2010-01-01 Impact factor: 3.876

New tantalum ligand-free catalyst system for highly selective trimerization of ethylene affording 1-hexene: new evidence of a metallacycle mechanism.

1. Synthesis of Pyridylimido Complexes of Tantalum and Niobium by Reductive Cleavage of the N═N Bond of 2,2'-Azopyridine: Precursors for Early-Late Heterobimetallic Complexes.

2. In Situ Catalyst Generation and Benchtop-Compatible Entry Points for Ti^II/Ti^IV Redox Catalytic Reactions.

3. Chain- and Regioselective Ethylene and Styrene Dimerization Reactions Catalyzed by a Well-Defined Cationic Ruthenium-Hydride Complex: New Insights on the Styrene Dimerization Mechanism.

4. Quantifying the Electron Donor and Acceptor Abilities of the Ketimide Ligands in M(N═C(t)Bu2)4 (M = V, Nb, Ta).

5. NMR chemical shift analysis decodes olefin oligo- and polymerization activity of d⁰ group 4 metal complexes.

6. Reactions of Dihaloboranes with Electron-Rich 1,4-Bis(trimethylsilyl)-1,4-diaza-2,5-cyclohexadienes.

7. Low Temperature Activation of Supported Metathesis Catalysts by Organosilicon Reducing Agents.

8. Mixed-ligand complexes of paddlewheel dinuclear molybdenum as hydrodehalogenation catalysts for polyhaloalkanes.