Organo-catalytic biomass deconstruction

A method of making a biomass hydrolysate, the method comprising:

• A. catalytically reacting water and a water-soluble C2+O1+ oxygenated hydrocarbon in a liquid or vapor phase with H2 in the presence of a deoxygenation catalyst at a deoxygenation temperature and deoxygenation pressure to produce an oxygenate comprising a C2+O1-3 hydrocarbon in a reaction stream;
• B. catalytically reacting in the liquid or vapor phase the oxygenate in the presence of a condensation catalyst at a condensation temperature and condensation pressure to produce a biomass processing solvent comprising one or more C4+ compounds;
• and
• C. reacting the biomass processing solvent with a solid biomass component, hydrogen and a deconstruction catalyst at a deconstruction temperature and a deconstruction pressure to produce a biomass hydrolysate comprising at least one member selected from the group consisting of a water-soluble lignocellulose derivative, a water-soluble cellulose derivative, a water-soluble hemicellulose derivative, a carbohydrate, a starch, a monosaccharide, a disaccharide, a polysaccharide, a sugar, a sugar alcohol, an alditol, and a polyol,
• D. recycling the biomass hydrolysate into the reactants of step C.