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A Copper Metal–Organic Framework as an Efficient and Recyclable Catalyst for the Oxidative Cross‐Dehydrogenative Coupling of Phenols and Formamides
Author(s) -
Phan Nam T. S.,
Nguyen Tung T.,
Vu Phuong H. L.
Publication year - 2013
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201300400
Subject(s) - catalysis , physisorption , chemistry , copper , metal organic framework , inorganic chemistry , thermogravimetric analysis , heterogeneous catalysis , oxidative coupling of methane , nuclear chemistry , organic chemistry , adsorption
A crystalline porous metal‐organic framework Cu 2 (BPDC) 2 (BPY) (BPDC=4,4′‐biphenyldicarboxylate, BPY=4,4′‐bipyridine) was synthesized and characterized by several techniques including XRD, SEM, TEM, thermogravimetric analysis, FTIR, atomic absorption spectrophotometry, hydrogen temperature‐programmed reduction, and nitrogen physisorption measurements. The Cu 2 (BPDC) 2 (BPY) could be employed as a heterogeneous catalyst for the copper‐catalyzed cross‐dehydrogenative coupling reaction of DMF with 2‐substituted phenols to form organic carbamates through CH activation under oxidative conditions. The Cu 2 (BPDC) 2 (BPY) offered higher catalytic activity than common copper salts such as Cu(OAc) 2 , CuCl, CuCl 2 , CuI, and Cu(NO 3 ) 2 as well as other Cu–MOFs such as Cu 3 (BTC) 2 , Cu(BDC), and Cu(BPDC). The Cu 2 (BPDC) 2 (BPY) catalyst could be facilely separated from the reaction mixture, could be recovered and reused several times without significant degradation in catalytic activity.