The bigger, the better
Macrocyclic oligomeric Co(III)-salen complexes derived from cyclooctene salen monomers are among the most active catalysts for asymmetric epoxide ring-opening reactions, but the reaction to make the catalysts produces a mixture of complexes with different ring sizes. Ring size may have a significant effect on the reactivity of the catalyst. US scientists have now been able to separate the mixture according to ring size and they tested each size for catalytic activity. They found that the larger the ring size, the more efficient the catalyst.
Original publication: Y Liu, J Rawlston, A T Swann, T Takatani, D Sherrill, P J Ludovice and Marcus Weck, Chem. Sci., 2011.
Organizations
Other news from the department science

Get the chemical industry in your inbox
By submitting this form you agree that LUMITOS AG will send you the newsletter(s) selected above by email. Your data will not be passed on to third parties. Your data will be stored and processed in accordance with our data protection regulations. LUMITOS may contact you by email for the purpose of advertising or market and opinion surveys. You can revoke your consent at any time without giving reasons to LUMITOS AG, Ernst-Augustin-Str. 2, 12489 Berlin, Germany or by e-mail at revoke@lumitos.com with effect for the future. In addition, each email contains a link to unsubscribe from the corresponding newsletter.
Most read news
More news from our other portals
Last viewed contents

LYB lays foundation for first industrial-scale advanced recycling plant at Wesseling, Germany site - Catalytic pyrolysis unit in heart of Europe to bolster sustainable growth, value creation

A candlelight-like glow from a flexible organic LED

New chemistry can extract virgin-grade materials from wind turbine blades in one process

Batteries: Modeling tomorrow's materials today - Microstructure simulations reveal strong influence of elastic deformations on charging behavior of layered oxides as cathode in sodium-ion batteries

A novel concept for photovoltaics
David J. Srolovitz Awarded 2013 Materials Theory Award - University of Pennsylvania professor receives award for exceptional advances in theoretical materials science

Filming ultrafast molecular motions in single crystal - A striking milestone unveiled the molecular reaction, shedding light on the intricate dance of atoms and the secrets of chemical transformations

Batteries on wheels - New charging technology to make e-cars suitable for mass use as mobile power storage units

Metafuels AG - Langnau am Albis, Switzerland
