Current Organic Chemistry - Volume 14, Issue 13, 2010

Cyclodextrins have been used in so many fields that we will not even attempt to number them. Their success originates from their ability to entirely or partly include hydrophobic molecules in their cavity, allowing the solubilisation of various organic substrates in water. Of special interest is the use of cyclodextrins in the field of catalysis. Indeed, they show a remarkable ability to solve mass transfer problems in biphasic systems Read More

For economic and ecological purposes, the design of stable and reusable noble metal nanoparticles in water has become a concern over the past few years. Among the various water-soluble protective agents, cyclodextrins proved to be attractive candidates to efficiently stabilize catalytically active nanospecies in aqueous media and also to improve the mass transfer in aqueous-organic two-phase systems. Various catalytic re Read More

This review focuses on the design of catalytic systems based on cyclodextrins via the molecular imprinting technique. The application of CD in the molecular imprinting method for the development of selective macromolecular receptors is discussed and the main features of the CD-based macromolecular receptors synthesized by the imprinting method are considered. A number of catalytic applications of such materials in Read More

During the past fifteen years, the use of chemically modified cyclodextrins (CDs) in aqueous organometallic catalysis has significantly contributed to enlarge the application field of biphasic processes in chemistry. In this paper, we describe how these supramolecular receptors became one of the most efficient solutions to solve mass transfer problems in aqueous organometallic catalysis. The scientific gaps that have been cleared Read More

The ever-increasing demand for environmentally benign and clean synthetic processes combined with high selectivities led to organic synthesis in water mimicking biochemical selectivity involving host guest complexes. Amongst various possibilities, cyclodextrin (CDs) possessing hydrophobic cavities have acquired significance as they promote organic reactions in water leading to high selectivities. The microenvironment arou Read More

Cyclodextrins are able to interact in biocatalysis reaction. Their effects as solubilizing agents, inhibitor blocking agents and chiral selectors are well documented and they also interact before the enzyme-catalyzed reaction. Indeed, they have lyo-protectant effect for enzyme in organic medium biocatalysis and they participate in the refolding of inactive enzymes to regain their active form.

Cyclodextrins provide unique opportunities to catalytic applications. The integration of these supramolecular structures and heterogeneous catalysis exhibits potential to fulfill the high demands to the development of sustainable chemical processes. Herein, we have summarized some properties of this important class of catalysts. Selected synthetic applications are discussed. We dedicate this manuscript to the memory Read More

Cyclodextrins are molecular capsules of adequate size to include metallo-organic guests and improve their solubility, shelf-life, and catalytic activity and recyclability, resembling the alchemist's metal-in-a-pot reactions on the molecular scale. This work reports literature examples of solid cyclodextrin inclusion compounds with metal catalysts and metallocyclodextrin catalysts, that find applications in two main and quite dist Read More

This account selectively reviews metal complexes that are covalently linked to β-cyclodextrin and are either designed to act as enzyme mimics or synthetically useful catalysts. The discussion of each supramolecular system is accompanied with a short introduction in order to provide the background of the corresponding application.

The binding properties of cyclodextrins stimulated the interest of many chemists. Cyclodextrins are popular candidates for catalytic reactions, and these are reviewed in this paper. The focus is mainly on the literature on native and modified cyclodextrins as non-metal containing catalysts, after year 1989, since before that year the literature on cyclodextrins as catalysts is very well covered by other comprehensive reviews [1]. T Read More