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Updated: Feb 20, 2026

Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry
Published on: October 18, 2019
Synthesis and derivatisation of ceric tris(tert-butoxy)siloxides
Jochen Friedrich1, Cäcilia Maichle-Mössmer, Reiner Anwander
1Institut für Anorganische Chemie Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany. reiner.anwander@uni-tuebingen.de.
Abstract:
Metathesis reactions involving cerium(iv) complexes are generally hampered by a high tendency for reduction to the favoured trivalent state and a preference for ligand redistribution. Heteroleptic ceric Ce[OSi(OtBu)3]3Cl(thf) is easily obtained from the oxidation of Ce[OSi(OtBu)3]3(thf)2 with trityl chloride, while the absence of thf triggers formation of homoleptic Ce[OSi(OtBu)3]4. Ce[OSi(OtBu)3]3Cl(thf) engages in salt metathesis reactions with the alkali metal alkoxides KOCH3 and KOtBu, forming Ce[OSi(OtBu)3]3(OR)(thf)x, but experiences an extensive reductive ligand redistribution with the methylating agent ZnMe2.
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