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Transformations of 1-(2-Aminophenyl)propan-2-ol to 2-Methylindoline

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Abstract

The transformation reaction of 1-(2-aminophenyl)propan-2-ol was studied at 200 °C under argon pressure. A range of catalysts was applied including carbon, titania and zeolite supported Ru, Pd, Pt, Rh, and Ir, as well as metal free zeolites. The highest conversion was obtained with H-Beta-150 and H-Beta-25 and the highest selectivity to 2-methylindoline was achieved with 0.3 % Ir–H-Beta-150 and H-Beta-25. Although the selectivity to 2-methylindole was high for all catalysts, formation of the final product 2-methylindoline only took place over the most acidic catalysts.

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Acknowledgments

This work is a part of activities at the Åbo Akademi Process Chemistry Centre (PCC), a Centre of Excellence financed by Åbo Akademi University. Financial support from European Union through the Seventh Framework Programme (Project 246095-2) is gratefully acknowledged. Mr. Markku Reunanen and Dr. Annika Smeds are acknowledged for analysis by GC–MS.

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Correspondence to Dmitry Yu. Murzin.

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Bernas, H., Demidova, Y.S., Aho, A. et al. Transformations of 1-(2-Aminophenyl)propan-2-ol to 2-Methylindoline. Catal Lett 145, 955–963 (2015). https://doi.org/10.1007/s10562-014-1474-3

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