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Updated: Sep 7, 2025

Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry
Published on: October 18, 2019
The ultimate Lewis acid catalyst: using tris(pentafluorophenyl) borane to create bespoke siloxane architectures
Hetian Gao1,2, Andrew Battley1, Erin M Leitao1,2
1School of Chemical Sciences, University of Auckland, Private Bag, 92019, Auckland, 1142, New Zealand. erin.leitao@auckland.ac.nz.
Tris(pentafluorophenyl)borane, a strong Lewis acid catalyst, enables diverse siloxane synthesis. This research explores its controlled application in creating unique siloxane products for various applications.
Area of Science:
- Organosilicon Chemistry
- Catalysis
- Materials Science
Background:
- Siloxane chemistry is crucial for developing advanced materials.
- Strong Lewis acid catalysts offer unique reactivity profiles.
- Tris(pentafluorophenyl)borane is a commercially available and stable Lewis acid.
Purpose of the Study:
- To explore the broad utility of tris(pentafluorophenyl)borane in siloxane synthesis.
- To demonstrate controlled and selective synthesis of diverse siloxane products.
- To investigate the application of these siloxane products.
Main Methods:
- Utilized tris(pentafluorophenyl)borane as a strong Lewis acid catalyst.
- Investigated the Piers-Rubinsztajn reaction and its modifications.
- Varied reaction conditions, precursor functionalities, and catalyst loading.
Main Results:
- Achieved controlled and selective synthesis of linear, cyclic, and macrocyclic siloxanes.
- Synthesized aryl-/alkoxysiloxanes and other bespoke siloxane products.
- Demonstrated the catalyst's versatility across various siloxane structures.
Conclusions:
- Tris(pentafluorophenyl)borane is a highly effective catalyst for diverse siloxane synthesis.
- The catalyst enables the creation of unique siloxane products with potential applications.
- Understanding mechanistic considerations and reaction parameters is key to optimizing its use.
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