Cleavage of CO Bonds in Lignin Model Compounds Catalyzed by Methyldioxorhenium in Homogeneous Phase. Issue 2 (21st January 2014)

• Record Type: Journal Article
• Authors: Harms, Reentje G.; Markovits, Iulius I. E.; Drees, Markus; Herrmann, h.c. mult. Wolfgang A.; Cokoja, Mirza; Kühn, Fritz E.
• Is Part Of: ChemSusChem. Volume 7:Issue 2(2014:Feb.)
• Page Start: 429
• Page End: 434
• Publication Date: 2014-01-21
• Subjects: Green chemistry -- Periodicals; Sustainable engineering -- Periodicals; Chemistry -- Periodicals; Chemical engineering -- Periodicals; 660
• DOI: 10.1002/cssc.201300918
• Languages: English
• ISSNs: 1864-5631

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Methyldioxorhenium (MDO)‐catalyzed CO bond cleavage of a variety of lignin β‐O‐4‐model compounds yields phenolic and aldehydic compounds in homogeneous phase under mild reaction conditions. MDO is in situ generated by reduction of methyltrioxorhenium (MTO) and is remarkably stable under the applied reaction conditions allowing its reuse for least five times without significant activity loss. Based on the observed and isolated intermediates, 17 O‐ and 2 H‐isotope labeling experiments, DFT calculations, and several spectroscopic studies, a reaction mechanism is proposed.</p> </abstract>