A sulfonic acid-functionalized amine-linked covalent organic framework as a robust catalyst for the preparation of pyrrole-2-ones
In recent years, covalent organic frameworks (COFs) have emerged as powerful heterogeneous catalysts. Notwithstanding, attainment of both crystallinity and stability of COF-based catalysts under harsh conditions is still challenging. Herein, an imine-linked COF has been transformed into an amine-linked COF via the redu...