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Asymmetric chain‐growth synthesis of polyisocyanide with chiral nickel precatalysts

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peer-reviewed

Erstveröffentlichung
2020-07-05
Authors
Schraff, Sandra
Kreienborg, Nora M.
Trampert, Jens
Sun, Yu
Orthaber, Andreas
et al.
Wissenschaftlicher Artikel


Published in
Journal of Polymer Science ; 58 (2020), 16. - S. 2221-2233. - eISSN 2642-4169
Link to original publication
https://dx.doi.org/10.1002/pol.20200153
Faculties
Fakultät für Naturwissenschaften
Institutions
Institut für Organische Chemie II und Neue Materialien
External cooperations
Ruhr-Universität Bochum
Technische Universität Kaiserslautern
Uppsala University
Document version
published version (publisher's PDF)
Abstract
Nickel(II)-aryl complexes [(L2)Ni(Ar)Br] bearing either chiral phosphine ligands (L2 = RR- or SS-DIPAMP, Ar = ortho-anisyl), or a chiral aryl-group have been prepared, and their structural optical an chiroptical properties have been characterized. Enantiomeric pairs of both catalysts have been used for the asymmetric polymerization of different isocyanides (M1, M2, M3), to give well defined polyisocyanides (P1, P2, P3). Their polymerization behavior has been studied, which confirmed chain-growth polymerization in all cases. The asymmetric induction has been verified by circular dichroism spectroscopy on enantiomeric pairs of all three polymers. Helically chiral polyisocyanides have been prepared using different types of Nickel(II) precatalysts via the chain‐growth polymerization. The asymmetric induction has been verified by circular dichroism spectroscopy on enantiomeric pairs of all synthesized polymers. The results demonstrate a versatile approach for the asymmetric synthesis of polyisocyanides.
Subject headings
[GND]: Isocyanide
[LCSH]: Addition polymerization | Nickel catalysts | Isocyanides
[Free subject headings]: Atropisomers | CD‐spectroscopy | DIPAMP | Helical polymers | Chain‐growth polymerization | Fulvenes | Polyisocyanides
[DDC subject group]: DDC 540 / Chemistry & allied sciences | DDC 570 / Life sciences
License
CC BY 4.0 International
https://creativecommons.org/licenses/by/4.0/

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DOI & citation

Please use this identifier to cite or link to this item: http://dx.doi.org/10.18725/OPARU-40166

Schraff, Sandra et al. (2021): Asymmetric chain‐growth synthesis of polyisocyanide with chiral nickel precatalysts. Open Access Repositorium der Universität Ulm und Technischen Hochschule Ulm. http://dx.doi.org/10.18725/OPARU-40166
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