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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