Mandle, Richard orcid.org/0000-0001-9816-9661 and Goodby, John William (2018) Inexpensive, Operationally Simple Flow Reactor for Rapid, Chromatography Free Synthesis of Siloxane Based Liquid Crystals. Reaction Chemistry & Engineering. pp. 515-519. ISSN 2058-9883
Abstract
We report on the hydrosilylation of terminal alkenes in flow using a “Karstedt-like” platinum-on-silica catalyst. A solution of alkene and siloxane in toluene was passed through the catalyst bed using a low pressure pump; the use of a high catalyst loading delivers quantitative β-addition of the siloxane to the alkene, hence the only purification required is removal of volatiles (toluene and siloxane). Following optimisation we synthesise a family of liquid crystalline siloxane terminated cyanobiphenyls, finding their properties to compare favourably to literature examples. The system and catalyst described is inexpensive, reusable, and chromatography free and thus prominently sustainable.
Metadata
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Institution: | The University of York | ||||
Academic Units: | The University of York > Faculty of Sciences (York) > Chemistry (York) | ||||
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Depositing User: | Pure (York) | ||||
Date Deposited: | 30 May 2018 12:00 | ||||
Last Modified: | 11 Feb 2024 00:29 | ||||
Published Version: | https://doi.org/10.1039/C8RE00027A | ||||
Status: | Published | ||||
Refereed: | Yes | ||||
Identification Number: | https://doi.org/10.1039/C8RE00027A | ||||
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Filename: 44_RCE_siloxanes_2018_advance_.pdf
Description: 44 - RCE, siloxanes, 2018 (advance)
Licence: CC-BY 2.5