|
51
|
Vanderkooy A, Gupta AK, Földes T, Lindblad S, Orthaber A, Pápai I, Erdélyi M. Halogen Bonding Helicates Encompassing Iodonium Cations. Angew Chem Int Ed Engl 2019; 58:9012-9016. [PMID: 31074942 PMCID: PMC6773207 DOI: 10.1002/anie.201904817] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 05/06/2019] [Indexed: 12/16/2022]
Abstract
The first halonium-ion-based helices were designed and synthesized using oligo-aryl/pyridylene-ethynylene backbones that fold around reactive iodonium ions. Halogen bonding interactions stabilize the iodonium ions within the helices. Remarkably, the distance between two iodonium ions within a helix is shorter than the sum of their van der Waals radii. The helical conformations were characterized by X-ray crystallography in the solid state, by NMR spectroscopy in solution and corroborated by DFT calculations. The helical complexes possess potential synthetic utility, as demonstrated by their ability to induce iodocyclization of 4-penten-1-ol.
Collapse
Affiliation(s)
- Alan Vanderkooy
- Department of Chemistry-BMC, Uppsala Universitet, Husargatan 3, 752 37, Uppsala, Sweden
| | - Arvind Kumar Gupta
- Department of Chemistry-Ångström Laboratory, Uppsala Universitet, Lägerhyddsvägen 1, 751 20, Uppsala, Sweden
| | - Tamás Földes
- Institute of Organic Chemistry, Research Center for Natural Sciences, Hungarian Academy of Sciences, Magyar tudósok körútja 2, 1117, Budapest, Hungary.,Present address: Department of Chemistry, King's College London, London, SE1 1DB, UK
| | - Sofia Lindblad
- Department of Chemistry-BMC, Uppsala Universitet, Husargatan 3, 752 37, Uppsala, Sweden
| | - Andreas Orthaber
- Department of Chemistry-Ångström Laboratory, Uppsala Universitet, Lägerhyddsvägen 1, 751 20, Uppsala, Sweden
| | - Imre Pápai
- Institute of Organic Chemistry, Research Center for Natural Sciences, Hungarian Academy of Sciences, Magyar tudósok körútja 2, 1117, Budapest, Hungary
| | - Máté Erdélyi
- Department of Chemistry-BMC, Uppsala Universitet, Husargatan 3, 752 37, Uppsala, Sweden
| |
Collapse
|