One‐Pot Synthesis of Fully‐Conjugated Chemically Stable Two‐Dimensional Covalent Organic Framework

Comprehensive Summary Covalent organic frameworks (COFs) with good chemical stability coupled with extended‐conjugation structures are highly preferable. Herein, a fully‐conjugated and chemically stable two‐dimensional COF was synthesized by a one‐pot, three‐components synthesis through a successful conversion of amine, aldehyde, and alkyne groups into the quinoline units as linkages with B(C 6 F 5 ) 3 serving as a Lewis acid catalyst, whilst 2,3‐dichloro‐5,6‐dicyano‐1,4‐benzoquinone (DDQ) was employed as an oxidant. The obtained fully conjugated 2D COF shows excellent stability in acid or base.