Abstract.

In the present work we have studied the catalytic activity of different solid Lewis acid molecular sieves synthesized in the Institut de Tecnologia Química. They have been used as catalysts in Mukaiyama and Mukaiyama-type C-C bond forming reactions of great interest in catalysis and fine chemistry.
Several catalysts have been developed from microporous molecular sieves such as zeolites, mesoporous like MCM-41, and macroporous as delaminated zeolites, and all of them had different Lewis acid metals in the network. Besides investigating the influence of the different molecular sieves structures in the activity, we have evaluated other effects such as the used solvent, the influence of water in the activity and the selectivity, the reagents structure, the versatility of other substrates, post-synthesis treatments, catalysts reusing and recycling, etc.
The obtained results, almost quantitative yields in short reaction times, are of great interest in catalysis and fine chemistry since the developed materials allow C-C bond forming reactions in a very simple way, with mild heterogeneous conditions and catalyst reutilization, fulfilling the requirements of the green chemistry. This fact would originate new industrial applications of the process and open the door to more active and selective catalytic materials.