The present disclosure is related to silica-based Lewis acid catalysts, being essentially devoid of strong Brønsted 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.
本公开涉及基于
硅的
路易斯酸催化剂,基本上不具有强布朗斯特酸特性,以及它们在作用[4+2]环加成和脱
水芳构化二烯和二烯酰基含氧取代基的产物形成取代苯方面的能力。在某些实施例中,这些过程包括将
生物质衍生底物与
乙烯接触,形成
对苯二甲酸及其衍
生物。