Please use this identifier to cite or link to this item:
http://dx.doi.org/10.18419/opus-14977
Authors: | Richter, Ferdinand Birchall, Nicholas Feil, Christoph M. Nieger, Martin Gudat, Dietrich |
Title: | Annellated 1,3,4,2-triazaphospholenes-simple modular synthesis and a first exploration of ligand properties |
Issue Date: | 2022 |
metadata.ubs.publikation.typ: | Zeitschriftenartikel |
metadata.ubs.publikation.seiten: | 12 |
metadata.ubs.publikation.source: | Molecules 27 (2022), No. 4747 |
URI: | http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-ds-149961 http://elib.uni-stuttgart.de/handle/11682/14996 http://dx.doi.org/10.18419/opus-14977 |
ISSN: | 1420-3049 |
Abstract: | The successful use of 1,3,4,2-triazaphospholenes (TAPs) as organo-catalysts stresses the need for efficient synthetic routes to these molecules. In this study, we establish the [1 + 4]-cycloaddition of PBr3 to azo-pyridines as a new approach to preparing pyrido-annellated TAPs in a single step from easily available precursors. The modular assembly of the azo-component via condensation of primary amines and nitroso compounds along with the feasibility of post-functionalization at the P-Br bond under conservation of the heterocyclic structure allows, in principle, to address a wide range of target molecules, which is illustrated by prototypical examples. The successful synthesis of a transition metal complex confirms for the first time the ability of a TAP to act as a P-donor ligand. Crystallographic studies suggest that hyperconjugation effects and intermolecular interactions induce a qualitatively similar ionic polarization of the P-Br bonds in TAPs as in better known isoelectronic diazaphospholenes. |
Appears in Collections: | 03 Fakultät Chemie |
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