Bibliographic Details
| 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] |
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| Database: |
Engineering Source |
