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3D Microporous Base‐Functionalized Covalent Organic Frameworks for Size‐Selective Catalysis
Author(s) -
Fang Qianrong,
Gu Shuang,
Zheng Jie,
Zhuang Zhongbin,
Qiu Shilun,
Yan Yushan
Publication year - 2014
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201310500
Subject(s) - knoevenagel condensation , microporous material , covalent bond , catalysis , selectivity , alkyl , amine gas treating , chemistry , covalent organic framework , adsorption , base (topology) , chemical engineering , organic chemistry , combinatorial chemistry , materials science , engineering , mathematical analysis , mathematics
The design and synthesis of 3D covalent organic frameworks (COFs) have been considered a challenge, and the demonstrated applications of 3D COFs have so far been limited to gas adsorption. Herein we describe the design and synthesis of two new 3D microporous base‐functionalized COFs, termed BF‐COF‐1 and BF‐COF‐2, by the use of a tetrahedral alkyl amine, 1,3,5,7‐tetraaminoadamantane (TAA), combined with 1,3,5‐triformylbenzene (TFB) or triformylphloroglucinol (TFP). As catalysts, both BF‐COFs showed remarkable conversion (96 % for BF‐COF‐1 and 98 % for BF‐COF‐2), high size selectivity, and good recyclability in base‐catalyzed Knoevenagel condensation reactions. This study suggests that porous functionalized 3D COFs could be a promising new class of shape‐selective catalysts.