- ZIF Acid-base bifunctional ZIF-8 catalyst with amine and sulfonic acid groups by post-synthetic modification for one-pot tandem reaction

摘要

The present invention has a structure similar to 2-methylimidazole, which is a ligand constituting zeolitic imidazolate frameworks (ZIFs) having an activated microporous structure, and an aromatic containing at least one nitrogen as a hetero element. a first step of contacting a compound comprising a ring and at least one amine group substituted on the ring; and a second step of reacting the amine group-introduced ZIF with 1,3-propanesultone to introduce a sulfone group through a ring-opening reaction with an amine group, and an acid having both an amine group and a sulfone group. -Related to a base bifunctional ZIF, the ZIF can perform an acidic reaction with increased conversion, and can perform a single-step reaction consisting of a deacetal-Knoevenagel condensation reaction. In addition, by providing a reusable ZIF, it can be expected to be applied to large-scale projects.