Well-Defined Molybdenum Oxo Alkyl Complex Supported on Silica by Surface Organometallic Chemistry: A Highly Active Olefin Metathesis Precatalyst

被引：48

作者：

Merle, Nicolas ^{[1
]}

Le Quemener, Frederic ^{[1
]}

Bouhoute, Yassine ^{[1
]}

Szeto, Kai C. ^{[1
]}

De Mallmann, Aimery ^{[1
]}

Barman, Samir ^{[2
]}

Samantaray, Manoja K. ^{[2
]}

Delevoye, Laurent ^{[3
]}

Gauvin, Regis M. ^{[3
]}

Taoufik, Mostafa ^{[1
]}

Basset, Jean-Marie ^{[2
]}

机构：

[1] ESCPE Lyon, UMR CNRS ESCPE Lyon UCBL 5265, Lab Chim Catalyse Polymeres & Proc, F-308-43,Blvd 11 Novembre 1918, F-69616 Villeurbanne, France

[2] King Abdullah Univ Sci & Technol, KAUST Catalysis Ctr, Phys Sci & Engn, Thuwal 239556900, Saudi Arabia

[3] Univ Lille, CNRS, Univ Artois, Cent Lille,ENSCL,UMR 8181,UCCS, F-59000 Lille, France

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2017年 / 139卷 / 06期

关键词：

OXIDE CATALYSTS; MO(VI);

D O I：

10.1021/jacs.6b11220

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The well-defined silica-supported molybdenum oxo alkyl species ( SiO-)MoO((CH2Bu)-Bu-t)(3) was selectively prepared by grafting of MoO((CH2Bu)-Bu-t)(3)Cl onto partially dehydroxylated silica (silica700) using the surface organometallic chemistry approach. This surface species was fully characterized by elemental analysis and DRIFT, solid-state NMR, and EXAFS spectroscopy. This new material is related to the active species of industrial supported MoO3/SiO2 olefin metathesis, catalysts. It displays very high activity in propene self-metathesis at mild (turnover number = 90 000 after 25 h). Remarkably, its catalytic performance outpaces those of the parent imido derivative and its tungsten oxo analogue.

引用

页码：2144 / 2147

页数：4

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