CO2 Activation by Organocatalyst

  • Author: ChemistryViews
  • Published: 30 November 2010
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA
  • Source / Publisher: Organic Letters/ACS Publications
thumbnail image: CO<sub>2</sub> Activation by Organocatalyst

The chemical activation of carbon dioxide could not only help reduce CO2 levels in the atmosphere, but could provide a renewable feedstock for the chemical industry. The strong C=O bonds, however, make the activation and fixation of CO2 through organic syntheses difficult.

Takashi Sakai and co-workers, Okayama University, Japan, report a bifunctional organocatalyst based on an ammonium betaine framework for the cooperative activation of CO2 with epoxides. The team tested a range of catalysts in which the distance between the two functional groups of the betaine framework was varied. The conversion of 1,2-epoxyhexane to the cyclic carbonate was achieved with yields of >99 % with 1 mol% of the best catalyst, 3-(trimethylammonio)phenolate.

The betaine-CO2 adduct was shown to form readily at 15 °C and this catalytic system is currently one of the most active under metal-free, halogen-free, and solvent-free conditions.

Article Views: 3408

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, please contact us first for permission. more

Follow on Facebook Follow on Twitter Follow on LinkedIn Follow on Instagram RSS Sign up for newsletters

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