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DOI: 10.1055/a-2025-2759
CN-Doped Cobalt Oxide Composite: An Economic and Reusable Catalyst with Multitasking Catalytic Capability for Alkyne and Nitrile Hydrations and Nitro Reductions
Raj K. Joshi thanks the CSIR (Grant no. 01(2996)/19/EMR-II) for financial assistance.
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Abstract
A heterogeneous CoOCN composite was synthesized via a one-pot reaction of [Co(NO3)2] and urea at 500 °C in a muffle furnace. The composite was fully characterized by FTIR, Raman, powder XRD, and XPS techniques. The catalyst was found to be efficient for the hydrations of aryl alkynes and nitriles under aerobic conditions. In addition, the catalyst exhibits high catalytic performance for the reduction of nitroarenes under inert gas-free conditions. This multitasking CoOCN composite was found to be highly suitable for all derivatives of nitrobenzene, alkynes, and nitriles because good to excellent yields were obtained. The catalyst was recovered quantitatively from the reaction mixture by simple filtration and consequently reused for seven consecutive cycles in all reactions without significant loss of catalytic activity. Hence, the synthesized CN-doped CoOCN composite worked as a multitasking catalyst for various value-added organic transformations, and it is highly economical and reusable for up to seven catalytic cycles without any activation, with even the last cycle producing reasonable yields of up to 48–50%.
Key words
heterogeneous catalysts - cobalt oxide - alkyne hydration - nitrile hydration - nitro reduction - catalysisSupporting Information
- Supporting information for this article is available online at https://doi.org/10.1055/a-2025-2759.
- Supporting Information
Publication History
Received: 20 December 2022
Accepted after revision: 02 February 2023
Accepted Manuscript online:
02 February 2023
Article published online:
27 March 2023
© 2023. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by/4.0/)
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