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Synthesis of liquid crystals using Suzuki-Miyaura coupling reactions using mesoporous, ligand-free Pd/Si3N4 catalysts in aqueous media.

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Title: Synthesis of liquid crystals using Suzuki-Miyaura coupling reactions using mesoporous, ligand-free Pd/Si3N4 catalysts in aqueous media.
Authors: Kitney, Stuart P.1, Cheng, Fei1, Khan, Shabbir1, Hope, Christopher N.1, McNab, William1, Kelly, Stephen M.1
Source: Liquid Crystals. Aug2011, Vol. 38 Issue 8, p1027-1033. 7p.
Subjects: Liquid crystals, Ligands (Chemistry), Heterogeneous catalysis, Porous materials, Silicon nitride, Solvents, Chemical reactions, Chemical kinetics
Abstract: We report a ligand-free Pd/Si3N4 catalysed Suzuki-Miyaura aryl-aryl cross-coupling reaction using mixtures of water-miscible solvents, such as dimethoxyethane, ethanol and isopropanol with water and several bases, such as sodium carbonate and potassium phosphate. The reaction time and catalyst concentration were optimised and the heterogeneous nature of the reaction was investigated. The optimised reaction conditions were used to synthesise a standard liquid crystal using environmentally friendly solvents and a Pd/Si3N4 catalyst. This reaction is scalable to produce larger quantities. [ABSTRACT FROM AUTHOR]
Copyright of Liquid Crystals is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 64320176
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Label: Title
  Group: Ti
  Data: Synthesis of liquid crystals using Suzuki-Miyaura coupling reactions using mesoporous, ligand-free Pd/Si3N4 catalysts in aqueous media.
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  Data: <searchLink fieldCode="AR" term="%22Kitney%2C+Stuart+P%2E%22">Kitney, Stuart P.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Cheng%2C+Fei%22">Cheng, Fei</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Khan%2C+Shabbir%22">Khan, Shabbir</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Hope%2C+Christopher+N%2E%22">Hope, Christopher N.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22McNab%2C+William%22">McNab, William</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Kelly%2C+Stephen+M%2E%22">Kelly, Stephen M.</searchLink><relatesTo>1</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Liquid+Crystals%22">Liquid Crystals</searchLink>. Aug2011, Vol. 38 Issue 8, p1027-1033. 7p.
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  Data: <searchLink fieldCode="DE" term="%22Liquid+crystals%22">Liquid crystals</searchLink><br /><searchLink fieldCode="DE" term="%22Ligands+%28Chemistry%29%22">Ligands (Chemistry)</searchLink><br /><searchLink fieldCode="DE" term="%22Heterogeneous+catalysis%22">Heterogeneous catalysis</searchLink><br /><searchLink fieldCode="DE" term="%22Porous+materials%22">Porous materials</searchLink><br /><searchLink fieldCode="DE" term="%22Silicon+nitride%22">Silicon nitride</searchLink><br /><searchLink fieldCode="DE" term="%22Solvents%22">Solvents</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+reactions%22">Chemical reactions</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+kinetics%22">Chemical kinetics</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: We report a ligand-free Pd/Si3N4 catalysed Suzuki-Miyaura aryl-aryl cross-coupling reaction using mixtures of water-miscible solvents, such as dimethoxyethane, ethanol and isopropanol with water and several bases, such as sodium carbonate and potassium phosphate. The reaction time and catalyst concentration were optimised and the heterogeneous nature of the reaction was investigated. The optimised reaction conditions were used to synthesise a standard liquid crystal using environmentally friendly solvents and a Pd/Si3N4 catalyst. This reaction is scalable to produce larger quantities. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Liquid Crystals is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1080/02678292.2011.593198
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      – Code: eng
        Text: English
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        PageCount: 7
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        Type: general
      – SubjectFull: Ligands (Chemistry)
        Type: general
      – SubjectFull: Heterogeneous catalysis
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      – SubjectFull: Porous materials
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      – SubjectFull: Silicon nitride
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      – SubjectFull: Chemical kinetics
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      – TitleFull: Synthesis of liquid crystals using Suzuki-Miyaura coupling reactions using mesoporous, ligand-free Pd/Si3N4 catalysts in aqueous media.
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              Text: Aug2011
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              Y: 2011
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