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Open Access Combining NHC bis-Phenolate Ligands with Oxophilic Metal Centers: A Powerful Approach for the Development of Robust and Highly Effective Organometallic Catalysts

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The present paper describes an overview of a novel family of tridentate NHC pincer ligand in which two phenoxide moieties are directly connected to the nitrogen atoms of a central N-heterocyclic carbene. It was envisioned that such a structure might be suitable for coordination to a variety of metal centers across the periodic table, including oxophilic metals. Various metal complexes bearing such ligand are indeed readily accessible in high yields via straightforward routes. Interestingly, a robust zirconium–NHC complex was found to polymerize rac-lactide in a highly controlled, living and stereoselective manner to afford heterotactic PLA.

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Keywords: N-HETEROCYCLIC CARBENE; ORGANOMETALLIC CATALYSIS; RING-OPENING POLYMERIZATION; TRANSITION METAL COMPLEXES

Document Type: Research Article

Affiliations: 1: IPCMS (Institut de Physique et Chimie des Matériaux de Strasbourg), CNRS-Université de Strasbourg, 23 rue du Loess BP 43, F-67034 Strasbourg, France; University of Strasbourg Institute for Advanced Study (USIAS), 5 allée du Général Rouvillois, F-67083 Strasbourg, France. [email protected] 2: Institut de chimie de Strasbourg, CNRS-Université de Strasbourg, 1 rue Blaise Pascal, F-67000 Strasbourg, France. [email protected] 3: Clariant International AG, Polymer Additives, MUT 904-242, Rothausstrasse 61, 4132 Muttenz, Switzerland; Inolytix AG, Bahnhofstrasse 35, 4334 Sisseln, Switzerland 4: Clariant International AG, Polymer Additives, MUT 904-242, Rothausstrasse 61, 4132 Muttenz, Switzerland. [email protected]

Publication date: August 1, 2014

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  • International Journal for Chemistry and Official Membership Journal of the Swiss Chemical Society (SCS) and its Divisions

    CHIMIA, a scientific journal for chemistry in the broadest sense, is published 10 times a year and covers the interests of a wide and diverse readership. Contributions from all fields of chemistry and related areas are considered for publication in the form of Review Articles and Notes. A characteristic feature of CHIMIA are the thematic issues, each devoted to an area of great current significance.

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