First Crucial Evidence for Apical-Apical Exchange via a Hypervalent Tellurium Ate Complex in the Reactions of Diaryl Tellurides with Aryllithium Reagents
- 1 December 1992
- journal article
- research article
- Published by Oxford University Press (OUP) in Chemistry Letters
- Vol. 21 (12) , 2471-2474
- https://doi.org/10.1246/cl.1992.2471
Abstract
Pentafluorophenyl phenyl telluride and 3,5-dichloro-2,4,6-trifluorophenyl phenyl telluride reacted with pentafluorophenyllithium or 3,5-dichloro-2,4,6-trifluorophenyllithium at low temperature to form the corresponding tellurium ate complexes as sole intermediates of the ligand exchange on the hypervalent tellurium centers. In these tellurium ate complexes electron-withdrawing aryl ligands were arranged at apical positions and the ligand exchanges took place between the apical-directing groups.Keywords
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