New AB type monomers from lignocellulosic biomass

A series of renewable novel bicyclic AB type polyester precursors have been prepared in good overall yield from lignocellulosic biomass. These advancements take full advantage of the differing oxidation states of functional groups in 5-(hydroxymethyl) furfural by chemoselective preparation of furanic hydroxy esters and applying benzyne-Diels-Alder cycloaddition/aromatization strategies.