Center for Catalytic Science and Technology (CCST): The renewable production of chemicals and fuels from biomass is inherently difficult due to competing side reactions. CCST has demonstrated the selective production of phthalic anhydride, a chemical used for the manufacture of plasticizers, unsaturated polyesters, and resins in the millions of tonnes per year, from biomass ..
Furfural is the feedstock to make furan as well as maleic anhydrid. See http://www.dalinyebo.com/item/708-furfural-green-chemical-building-block.
See on sites.udel.edu