Details

Autor(en) / Beteiligte

• vom Stein, Thorsten
• den Hartog, Tim
• Buendia, Julien
• Stoychev, Spas
• Mottweiler, Jakob
• Bolm, Carsten
• Klankermayer, Jürgen
• Leitner, Walter

Titel

Ruthenium-Catalyzed CC Bond Cleavage in Lignin Model Substrates

Ist Teil von

• Angewandte Chemie (International ed.), 2015-05, Vol.54 (20), p.5859-5863

Ort / Verlag

Weinheim: WILEY-VCH Verlag

Erscheinungsjahr

2015

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Ruthenium–triphos complexes exhibited unprecedented catalytic activity and selectivity in the redox‐neutral CC bond cleavage of the β‐O‐4 lignin linkage of 1,3‐dilignol model compounds. A mechanistic pathway involving a dehydrogenation‐initiated retro‐aldol reaction for the CC bond cleavage was proposed in line with experimental data and DFT calculations. Sele‐C‐C‐tivity! Highly selective CC bond cleavage of model compounds for the lignin β‐O‐4 linkage was promoted by a catalyst formed in situ from [Ru(Cl)(H)(PPh3)3] and the ligand triphos (see scheme). Mechanistic investigations indicated a hydrogen‐transfer‐based retro‐aldol pathway for this transformation.