We have synthesized and used a new polymer support for the catalysis of the Suzuki Miyaura reaction. The process is based upon the use of the so called polyHIPE mixed material. A macroporous polymer support can be obtained by the formulation of a water-in-oil emulsion. For this purpose we introduce a large quantity of water into a mixture of a polymerizable solvent (styrene in this case) with an adapted surfactant. Since the proportion of water is very high in the system, the final mixture is equivalent to a biliquid foam in which the water cells are separated one from the other by a thin organic film. During the polymerisation process (triggered by a radical initiator and the increase in temperature), the styrene films toughen and small holes appear at the same time, leading to the formation of a fully connected material. Water can then be evaporated and the obtained porous polymer support is further used for the in-situ growth of palladium nanoparticles. First, the polymer surface is functionnalized by various specific organic functions which are known to favour the stabilization of palladium nanoparticles. The support is then put into a palladium salt solution. The palladium salt reduction process occurs at the surface of the polymers leading to the in situ growth of metallic palladium nanoparticles. A particular attention should be given to the used reduction trigger in order to get nanoparticles having a narrow size distribution. The obtained mixed material is then used for the catalysis of the Suzuki-Miyaura reaction and its performances are compared to what can be obtained with more classical types of palladium supports (such as Pd/C) and homogeneous catalysts.

• Legal notice:
  

  Copyright (c) Pielaszek Research, all rights reserved.
  The above materials, including auxiliary resources, are subject to Publisher's copyright and the Author(s) intellectual rights. Without limiting Author(s) rights under respective Copyright Transfer Agreement, no part of the above documents may be reproduced without the express written permission of Pielaszek Research, the Publisher. Express permission from the Author(s) is required to use the above materials for academic purposes, such as lectures or scientific presentations.
  In every case, proper references including Author(s) name(s) and URL of this webpage: https://science24.com/paper/6583 must be provided.