Li, Zhenzhong ; Rösler, Lorenz ; Herr, Kevin ; Brodrecht, Martin ; Breitzke, Hergen ; Hofmann, Kathrin ; Limbach, Hans‐Heinrich ; Gutmann, Torsten ; Buntkowsky, Gerd (2022)
Dirhodium Coordination Polymers for Asymmetric Cyclopropanation of Diazooxindoles with Olefins: Synthesis and Spectroscopic Analysis.
In: ChemPlusChem, 2020, 85 (8)
doi: 10.26083/tuprints-00020311
Article, Secondary publication, Publisher's Version
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Dirhodium Coordination Polymers for Asymmetric Cyclopropanation of Diazooxindoles with Olefins .pdf Copyright Information: CC BY-NC-ND 4.0 International - Creative Commons, Attribution NonCommercial, NoDerivs. Download (1MB) |
Item Type: | Article |
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Type of entry: | Secondary publication |
Title: | Dirhodium Coordination Polymers for Asymmetric Cyclopropanation of Diazooxindoles with Olefins: Synthesis and Spectroscopic Analysis |
Language: | English |
Date: | 14 January 2022 |
Place of Publication: | Darmstadt |
Year of primary publication: | 2020 |
Publisher: | Wiley-VCH |
Journal or Publication Title: | ChemPlusChem |
Volume of the journal: | 85 |
Issue Number: | 8 |
DOI: | 10.26083/tuprints-00020311 |
Corresponding Links: | |
Origin: | Secondary publication service |
Abstract: | A facile approach is reported for the preparation of dirhodium coordination polymers [Rh₂(L1)₂]n (Rh₂-L1) and [Rh₂(L2)₂]n (Rh₂-L2; L1=N,N’-(pyromellitoyl)-bis-L-phenylalanine diacid anion, L2=bis-N,N’-(L-phenylalanyl) naphthalene-1,4,5,8-tetracarboxylate diimide) from chiral dicarboxylic acids by ligand exchange. Multiple techniques including FTIR, XPS, and ¹H→¹³C CP MAS NMR spectroscopy reveal the formation of the coordination polymers. ¹⁹F MAS NMR was utilized to investigate the remaining TFA groups in the obtained coordination polymers, and demonstrated near-quantitative ligand exchange. DR-UV-vis and XPS confirm the oxidation state of the Rh center and that the Rh-single bond in the dirhodium node is maintained in the synthesis of Rh₂-L1 and Rh₂-L2. Both coordination polymers exhibit excellent catalytic performance in the asymmetric cyclopropanation reaction between styrene and diazooxindole. The catalysts can be easily recycled and reused without significant reduction in their catalytic efficiency. |
Status: | Publisher's Version |
URN: | urn:nbn:de:tuda-tuprints-203112 |
Classification DDC: | 500 Science and mathematics > 540 Chemistry |
Divisions: | 07 Department of Chemistry > Eduard Zintl-Institut > Physical Chemistry |
Date Deposited: | 14 Jan 2022 07:44 |
Last Modified: | 14 Nov 2023 19:04 |
URI: | https://tuprints.ulb.tu-darmstadt.de/id/eprint/20311 |
PPN: | 506155870 |
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