METHOD OF WOOD PROCESSING INTO PRODUCTS OF FINE ORGANIC SYNTHESIS Russian patent published in 1998 - IPC

FIELD: fine organic synthesis, more specifically, technology of production of vanilla, syringaldehyde and levulinic acid from wood used in pharmaceutical, confectionery and perfume industries and in polymer technology. SUBSTANCE: products are produced by catalytic oxidation of small-leaved wood (aspen, birch, poplar) with oxygen in alkali medium with subsequent acid hydrolysis of cellulose residue. The method is distinguished by use of wood of small-leaved species (aspen, birch, poplar) and processing of solid residue of oxidation process into levulinic acid by acid hydrolysis. EFFECT: four-fold increase of assortment and yield of products; reduced consumption of alkali by two times on the basis of produced aldehydes.