DIELS-ALDER REACTIONS CATALYZED BY LEWIS ACID CONTAINING SOLIDS: RENEWABLE PRODUCTION OF BIO-PLASTICS

摘要

The present disclosure is related to silica-based Lewis acid catalysts, being essentially devoid of strong Bronsted acid character, and their ability to effect the [4+2] cycloaddition and dehydrative aromatization of dienes and dienophiles containing oxygenated substituents to form substituted benzene products. In some embodiments, the processes comprise contacting biomass-derived substrates with ethylene to form terephthalic acid and its derivatives.