A Porphyrin-Based Covalent Organic Framework for Metal-Free Photocatalytic Aerobic Oxidative Coupling of Amines.

Authors :: He H
Fang X
Zhai D
Zhou W
Li Y
Zhao W
Liu C
Li Z
Deng W
Source :: Chemistry (Weinheim an der Bergstrasse, Germany) [Chemistry] 2021 Oct 19; Vol. 27 (58), pp. 14390-14395. Date of Electronic Publication: 2021 Sep 23.
Publication Year :: 2021
Abstract: Imines are important intermediates in drug synthesis. Photocatalytic aerobic oxidative coupling of amines has been considered as a clean and promising way to produce imines and has attracted great attention. Herein, we designed and synthesized a novel two-dimensional porphyrin-based covalent organic framework (Por-BC-COF) which adopts an AA stacking mode with excellent crystallinity, high Brunauer-Emmett-Teller surface areas (1200 m <superscript>2</superscript> g <superscript>-1</superscript> ), wide light absorption range (200-1300 nm) and good stability in a variety of organic solvents. Por-BC-COF can be used as a metal-free heterogeneous photocatalyst for the photocatalytic oxidation of amines to imines under visible light and red light with a high yield (97 %). This work presents a novel and efficient COF photocatalyst in the application of light-driven organic synthesis.<br /> (© 2021 Wiley-VCH GmbH.)

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