The development of the magnetic metal-organic framework supported palladium catalyst and the application of Heck reaction

In organic chemistry, coupling reactions play an important role in the synthesis of desired organic materials. Since these reactions do not occur under normal conditions, the catalyst is needed to carry out the reaction. The separation of catalysts from the media at the end of the reaction is an important step in these processes. Magnetic metal organic frameworks are used as a support material for catalayst and they also facilitate the seperation of catalyst material in heterogeneous catalysis due to their magnetic properties. In addition, organic or metal parts in the structure of metal organic framework can affect the performance of the catalysis. In this study, it was aimed to develop an alternative catalyst system for the Heck reaction which is frequently used in organic chemistry. During the study, a MOF layer was constructed using Fe+3 and gallic acid on synthesized magnetic iron ferrite nanoparticles and palladium nanoparticles were trapped inside this structure. The obtained catalyst system was applied for Heck reaction against a commercially used catalyst and the yields of the obtained products have been compared. When the results were compared, it was seen that the yield of the commercial catalyst was higher than the catalytic system we produced. However, it has been observed that our catalyst system can be extracted with minimal loss from the media by a simple magnet. Extraction of catalyst much easier and faster than the commercial catalyst. It was found that the catalyst system we developed was more advantageous in terms of reusability because it gave but similar yields for the second use.