•Pyridine-modified chitosan derivatives were applied in nitroaldol (Henry) reaction.•Solid-state 13C MC-CP MAS was applied to elucidate the catalyst structures.•47(±2)% of chitosan-free NH2 groups were grafted for both C1 and C2 catalysts.•C1-Cu(OAc)2 provided a high conversion and the enantiomeric excess increased to 19(±4)%.•C2-Cu(OAc)2 provided a higher conversion, but the enantiomeric excess was 14.5(±1.5)%.
Carbohydrate Polymers – Elsevier
Published: Feb 1, 2018
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