Journal
TETRAHEDRON
Volume 72, Issue 22, Pages 2895-2899Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2016.03.098
Keywords
Metal-organic frameworks; Cu-3(BTC)(2); Phenylboronic acid; Oxidation; Hydrogen peroxide
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Funding
- University Grants Commission (UGC), New Delhi
- Department of Science and Technology, India [SB/FT/CS-166/2013]
- Generalidad Valenciana
- Spanish Ministry of Economy and Competitiveness [CTQ-2012-32315]
- Generalidad Valenciana [2012-014]
- European Community's Seventh Framework Programme (FP7) [228862]
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A well known copper based-metal organic framework (MOF), namely Cu-3(BTC)(2), is a suitable heterogeneous catalyst to promote the oxidative room-temperature hydroxylation of arylboronic acids to the corresponding phenols by H2O2. Using 0.5 equiv of H2O2, Cu-3(BTC)(2) exhibits 80% conversion in 60 min that is higher than 70% conversion achieved with Fe(BTC) under the same conditions and reaction time. Cu-3(BTC)(2) is reusable with no significant drop in the activity. Furthermore, powder XRD of the reused Cu-3(BTC)(2) shows no changes in crystallinity compared to the fresh Cu-3(BTC)(2), indicating catalyst stability is maintained under reaction conditions. The scope of Cu-3(BTC)(2) as heterogeneous catalyst for the oxidative hydroxylation was studied for various phenylboronic acids. (C) 2016 Elsevier Ltd. All rights reserved.
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