Oxidative carbonylation of N-protected indoles by Rh(III)-zeolites

Sam Van Minnebruggen; Carlos Marquez; Besir Krasniqi; Kwinten Janssens; Niels Van Velthoven; Jannick Vercammen; Benoit De Soete; Aram Bugaev; Dirk De Vos

doi:10.1039/D2CC05953C

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Oxidative carbonylation of N-protected indoles by Rh(iii)-zeolites†

Sam Van Minnebruggen,^a Carlos Marquez,

^a Besir Krasniqi,^a Kwinten Janssens,

^a Niels Van Velthoven,

^a Jannick Vercammen,

^a Benoit De Soete,^a Aram Bugaev^b and Dirk De Vos

*^a

Author affiliations

* Corresponding authors

^a cMACS, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
E-mail: Dirk.devos@kuleuven.be

^b Smart Materials Research Institute, Southern Federal University, Sladkova 178/24, 344090 Rostov-on-Don, Russia

Abstract

The oxidative carbonylation of N-protected indoles was investigated to directly synthesize indole-3-carboxylic acids. Using Rh(III)-zeolites as heterogeneous catalysts, the single-site Rh-species reach unprecedented activities (>100 turnovers), while the metal is readily recovered after reaction. X-ray absorption spectroscopy (XAS) provided evidence for site-isolation of Rh(III) species on the zeolite.

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Article information

DOI: https://doi.org/10.1039/D2CC05953C
Article type: Communication
Submitted: 03 Nov 2022
Accepted: 30 Jan 2023
First published: 03 Feb 2023

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Chem. Commun., 2023,59, 2319-2322

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Oxidative carbonylation of N-protected indoles by Rh(III)-zeolites

S. Van Minnebruggen, C. Marquez, B. Krasniqi, K. Janssens, N. Van Velthoven, J. Vercammen, B. De Soete, A. Bugaev and D. De Vos, Chem. Commun., 2023, 59, 2319 DOI: 10.1039/D2CC05953C

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Chemical Communications

Oxidative carbonylation of N-protected indoles by Rh(iii)-zeolites†

Abstract

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Oxidative carbonylation of N-protected indoles by Rh(III)-zeolites

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