Heterogenization of Homogeneous Catalysts: the Effect of the Support

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We have studied the influence of placing a soluble, homogeneous catalyst onto a solid support. We determined that such a 'heterogenized' homogeneous catalyst can have improved activity and selectivity for the asymmetric hydrogenation of enamides to amino acid derivatives. The route of heterogenization of RhDuPhos(COD){sup +} cations occurs via electrostatic interactions with anions that are capable of strong hydrogen bonding to silica surfaces. This is a novel approach to supported catalysis. Supported RhDuPhos(COD){sup +} is a recyclable, non-leaching catalyst in non-polar media. This is one of the few heterogenized catalysts that exhibits improved catalytic performance as compared to its homogeneous … continued below

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6 p.

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Earl, William L.; Ott, Kevin C.; Hall, Keith A.; de Rege, Francis M.; Morita, David K.; Tumas, William et al. June 29, 1999.

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We have studied the influence of placing a soluble, homogeneous catalyst onto a solid support. We determined that such a 'heterogenized' homogeneous catalyst can have improved activity and selectivity for the asymmetric hydrogenation of enamides to amino acid derivatives. The route of heterogenization of RhDuPhos(COD){sup +} cations occurs via electrostatic interactions with anions that are capable of strong hydrogen bonding to silica surfaces. This is a novel approach to supported catalysis. Supported RhDuPhos(COD){sup +} is a recyclable, non-leaching catalyst in non-polar media. This is one of the few heterogenized catalysts that exhibits improved catalytic performance as compared to its homogeneous analog.

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6 p.

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OSTI as DE00763894

Medium: P; Size: 6 pages

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  • Other Information: PBD: 29 Jun 1999

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  • June 29, 1999

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  • Sept. 29, 2015, 5:31 a.m.

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  • Nov. 7, 2022, 6:09 p.m.

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Earl, William L.; Ott, Kevin C.; Hall, Keith A.; de Rege, Francis M.; Morita, David K.; Tumas, William et al. Heterogenization of Homogeneous Catalysts: the Effect of the Support, report, June 29, 1999; New Mexico. (https://digital.library.unt.edu/ark:/67531/metadc722952/: accessed March 28, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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