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Alexsandro Berger, Robertus J. M. Klein Gebbink, Gerard van's Dendrimer Catalysis PDF

By Alexsandro Berger, Robertus J. M. Klein Gebbink, Gerard van Koten (auth.), Lutz H. Gade (eds.)

ISBN-10: 3540344748

ISBN-13: 9783540344742

Since the 1st program of dendrimers in catalysis within the mid Nineteen Nineties, this box has complicated swiftly. subsequently, catalytically lively dendrimers have emerged as a category of molecular catalysts that has considerably enriched the sphere of homogeneous (and partially heterogeneous) catalysis. A basic survey of transition steel dendrimer catalysts and how they've got constructed is through in-depth discussions of dendritic transition steel catalysis according to non-covalent catalyst-support interplay and an outline of the speedily growing to be box of stereoselective dendrimer catalysis. the advance of dendrimer-encapsulated bimetallic nanoparticles has supplied the interface with heterogeneous colloid catalysis. As more cost-effective and effortlessly obtainable possible choices to usual dendrimers, hyperbranched polymers are more and more getting used as catalyst systems. those issues are complemented via a overview of metallodendritic exoreptors for the redox acceptance of oxo-anions and halides.

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39 2 Covalent Versus Noncovalent Anchoring of Catalysts to Dendrimers . . 41 3 Noncovalently Functionalized Dendrimers Based on Multiple Interactions . . . . . . . . . . . . 44 Noncovalently Functionalized Dendrimers Based on Single Point Interactions . . . . . . . . . . . 49 5 Noncovalently Functionalized Hyperbranched Polymers . . . . . 52 6 Conclusions and Outlook . . . . . . . . . . . . . . 56 References . . . . . . .

For the hydrogenation of dimethyl itaconate (Scheme 9), the rhodium catalyst was formed in situ via the reaction of [Rh(nbd)2 ]2 (ClO4 ) (nbd = 2,5norbornadiene) with the diphosphine dendritic ligand (P/Rh = 2) [68]. All dendritic dppf-type ligands gave active hydrogenation rhodium catalysts with 26 A. Berger et al. Scheme 11 Van Leeuwen’s core-functionalized ferrocenyl-phosphine carbosilane dendrimers used as ligands in palladium-catalyzed allylic alkylation reactions activities similar to the analogous monomeric dppf ligand under the same conditions.

Oosterom GE, Steffens S, Reek JNH, Kamer PCJ, van Leeuwen WNM (2002) Top Catal 19:61 69. Albrecht M, Hovestad NJ, Boersma J, van Koten G (2001) Chem Eur J 7:1289 70. Arink AM, van de Coevering R, Wieczorek B, Firet J, Jastrzebski JTBH, Klein Gebbink RJM, van Koten G (2004) J Organomet Chem 689:3813 71. Arink AM, Braam TW, Keeris R, Jastrzebski JTBH, Benhaim C, Rosset S, Alexakis A, van Koten G (2004) Org Lett 6:1959 72. Haubrich A, van Klaveren M, van Koten G, Handke G, Krause N (1993) J Org Chem 58:5849 73.

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Dendrimer Catalysis by Alexsandro Berger, Robertus J. M. Klein Gebbink, Gerard van Koten (auth.), Lutz H. Gade (eds.)


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