Abstract
Catalytic hydrogenolysis of a γ-acetylated dimer lignin model compound is effected using a Ru–xantphos catalyst. Mechanistic investigations show mono-aryl degradation products are generated from the β-O-4 substrate as well as a terminal alkene ketone dimer (bis-aryl) that further dimerizes to a tetra-aryl product. Preliminary results using an acetylated kraft lignin as a substrate are also discussed.
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