Construction of acid–base bifunctional covalent organic frameworks via Doebner reaction for catalysing cascade reaction

Abstract

We report herein a series of quinoline-4-carboxylic acid linked COFs via the multicomponent one-pot in situ Doebner reaction. The obtained acid–base bifunctional COFs are chemically stable and can highly promote one-pot cascade deacetalization–Knoevenagel condensation reaction in a heterogeneous way under solvent-free conditions.