Cellulose Depolymerization with LPMO‐inspired Cu Complexes

Bis(benzimidazole)amine-based copper complexes, with structural similarities to the active sites of Lytic Polysaccharide Monooxygenase enzymes (LPMOs), were tested for oxidative degradation cellulose. Spectroscopic characterization as well authentication one them, confirm a tetragonal coordination environment 3 nitrogen donors, thioether in axial positions. Aqueous cellulose was achieved CuII complexes and H2O2 oxidant through putative cupric-hydroperoxo intermediates. Conversion up 67 % yield soluble oligosaccharide derivatives at ambient temperature pressure. The products analyzed aqueous solution by HPLC-MS, confirming depolymerization under conditions, an analogous fashion LPMOs.