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Back Cover: Synthesis of a Sulfonated Two‐Dimensional Covalent Organic Framework as an Efficient Solid Acid Catalyst for Biobased Chemical Conversion (ChemSusChem 19/2015)
Author(s) -
Peng Yongwu,
Hu Zhigang,
Gao Yongjun,
Yuan Daqiang,
Kang Zixi,
Qian Yuhong,
Yan Ning,
Zhao Dan
Publication year - 2015
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201501207
Subject(s) - catalysis , chemistry , covalent bond , covalent organic framework , chemoselectivity , sulfonic acid , nanocellulose , tautomer , organic chemistry , heterogeneous catalysis , chemical engineering , cellulose , engineering
The Back Cover picture shows the crystal structure of a sulfonic acid‐functionalized 2D covalent organic framework (COF) and its application as a highly effective solid acid catalyst with excellent catalytic activity and chemoselectivity for the conversion of fructose into 5‐hydroxymethylfurfural (HMF) and 2,5‐diformylfuran (DFF). A sulfonated 2D crystalline COF, termed TFP–DABA, is synthesized directly using 1,3,5‐triformylphloroglucinol (TFP) and 2,5‐diaminobenzenesulfonic acid (DABA) via a Schiff base condensation reaction followed by irreversible enol‐to‐keto tautomerization. This COF is highly efficient for fructose conversion with remarkable yields (97% for HMF and 65% for DFF). This study provides encouragement for further exploration of COFs as heterogeneous catalysts for bio‐based chemical conversion and related applications. More details can be found in the Communication by D. Zhao et al. on page 3208 in Issue 19, 2015 (DOI: 10.1002/cssc.201500755).