Abstract
Periodic Mesoporous Organosilicas (PMOs) emerged on the scene of Materials Chemistry in 1999. Since then, the literature concerning their synthesis, characterization and applications has rapidly grown. From the very beginning, one of their main applications has been for heterogeneous catalysis. In order to impart them a catalytic behaviour, they have been functionalized to create catalytic sites on their pore walls, sometimes following well-established strategies reminiscent from mesoporous silicas but other times carrying out new methods based on the existence of organic bridges in their framework. Herein, we will give an overview on their use as catalysts, but being focused on the properties that distinguish them from mesoporous silicas and on those processes where their application involves a real advantage over other materials.
Keywords: Acid-base catalysis, Heterogeneous catalysis, Mesoporous materials, Organometallic catalysts, Organosilicas, Supports.
Graphical Abstract
Call for Papers in Thematic Issues
Catalytic C-H bond activation as a tool for functionalization of heterocycles
The major topic is the functionalization of heterocycles through catalyzed C-H bond activation. The strategies based on C-H activation not only provide straightforward formation of C-C or C-X bonds but, more importantly, allow for the avoidance of pre-functionalization of one or two of the cross-coupling partners. The beneficial impact of ...read more
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