Cationic Bis-N-Heterocyclic Carbene (NHC) Ruthenium Complex: Structure and Application as Latent Catalyst in Olefin Metathesis

被引：27

作者：

Rouen, Mathieu ^{[1
]}

Queval, Pierre ^{[1
]}

Falivene, Laura ^{[2
]}

Allard, Jessica ^{[1
]}

Toupet, Loic ^{[3
]}

Crevisy, Christophe ^{[1
]}

Caijo, Frederic ^{[4
]}

Basle, Olivier ^{[1
]}

Cavallo, Luigi ^{[2
,5
]}

Mauduit, Marc ^{[1
]}

机构：

[1] Ecole Natl Super Chim Rennes, CNRS, UMR 6626, F-35708 Rennes 7, France

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

[3] Univ Rennes 1, CNRS, UMR 6251, Inst Phys Rennes, F-35042 Rennes, France

[4] OmegaCat Syst, F-35708 Rennes 7, France

[5] Univ Salerno, Dipartimento Chim & Biol, I-84084 Fisciano, Italy

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2014年 / 20卷 / 42期

关键词：

carbenes; cations; olefination; metathesis; ruthenium; ALKYLIDENE COMPLEXES; IN-SITU; LIGANDS; BEARING; EFFICIENT; PHOSPHINE; ROMP; STEP;

D O I：

10.1002/chem.201403934

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

An unexpected cationic bis-N-heterocyclic carbene (NHC) benzylidene ether based ruthenium complex (2a) was prepared through the double incorporation of an unsymmetrical unsaturated N-heterocyclic carbene (U-2-NHC) ligand that bore an N-substituted cyclododecyl side chain. The isolation and full characterization (including X-ray diffraction studies) of key synthetic intermediates along with theoretical calculations allowed us to understand the mechanism of the overall cationization process. Finally, the newly developed complex 2a displayed interesting latent behavior during ring-closing metathesis, which could be switched on under acidic conditions.

引用

页码：13716 / 13721

页数：6

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