Bifunctional Polymeric Heterometallic Catalysts

  • Author: Angewandte Chemie International Edition
  • Published Date: 04 April 2016
  • Source / Publisher: Angewandte Chemie International Edition/Wiley-VCH
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
thumbnail image: Bifunctional Polymeric Heterometallic Catalysts

Linking different metal complexes to polymers is an attractive method for the preparation of novel bifunctional catalysts, which can be easily recovered. Unfortunately, such compounds are difficult to prepare by a post-synthesis strategy involving metalation after polymer synthesis.


Fuwei Li, Chinese Academy of Sciences, Lanzhou, China, F. Ekkehardt Hahn, University of Münster, Germany, and colleagues have prepared strictly alternating metallized polymers (pictured). They achieved this by using a click reaction between mononuclear metal complexes (secondary building units, SBUs) bearing N-heterocyclic carbenes (NHCs) functionalized with either p-azidophenyl or p-ethynylphenyl groups. The linker between the SBUs can be flexible or rigid, which influences the catalytic activity of the heterobimetallic compounds.


The researchers observed a high catalytic activity in the alkynylation of trifluoromethyl ketones to give fluorinated propargylic alcohols using a flexible methylene triazole bridge between the metal complexes. The team is currently studying the synthesis of new heterobimetallic tagged molecular compounds and polymers by click-linkage of suitable SBUs.


 

Article Views: 2582

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

If you would like to reuse any content, in print or online, from ChemistryViews.org, please contact us first for permission. more


CONNECT:

ChemistryViews.org on Facebook

ChemistryViews.org on Twitter ChemistryViews.org on YouTube ChemistryViews.org on LinkedIn Sign up for our free newsletter


Magazine of Chemistry Europe (16 European Chemical Societies)published by Wiley-VCH