Reduction of sugar derivatives to value chemicals ~utilization of asymmetric carbons~
Biomass is a promising renewable resource substituent for petroleum, and transformation of biomass-derived materials to valuable chemicals is an urgent issue. Up to now, transformation methods of biomass-based materials via furfural and 5-hydroxymethyl furfural have been intensively developed, giving some of important chemicals. However, considering the versatility of chemicals from petroleum, development of other transformation methods of biomass-derived materials is essential, and particularly transformation methods of biomass-derived materials which can make the most use of the unique structures is preferable. This perspective focuses on non-furfural routes of sugar derivatives, which are main scaffolds of biomass-derived cellulose and hemicellulose, and it summarizes recent researches on catalytic transformations to valuable chemicals. These transformation routes are based on key reactions such as hydrogenolysis, reduction with silane reducing agents using borane catalyst and, deoxydehydration (DODH) (+ hydrogenation (HG)) and combination of dehydration and hydrogenation (and/or hydrogenolysis), and some of these transformation methods enable synthesis of chiral products derived from the original sugars.