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Membrane-Supported Recovery of Homogeneous Organocatalysts: A Review

Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Szent Gellért tér 4, 1111 Budapest, Hungary
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Chemistry 2020, 2(3), 742-758; https://doi.org/10.3390/chemistry2030048
Received: 22 July 2020 / Revised: 24 August 2020 / Accepted: 25 August 2020 / Published: 27 August 2020
(This article belongs to the Special Issue Organic Chemistry Research in Hungary)
As catalysis plays a significant role in the development of economical and sustainable chemical processes, increased attention is paid to the recovery and reuse of high-value catalysts. Although homogeneous catalysts are usually more active and selective than the heterogeneous ones, both catalyst recycling and product separation pose a challenge for developing industrially feasible methods. In this respect, membrane-supported recovery of organocatalysts represents a particularly useful tool and a valid option for organocatalytic asymmetric synthesis. However, catalyst leaching/degradation and a subsequent decrease in selectivity/conversion are significant drawbacks. As the effectivity of the membrane separation depends mainly on the size of the catalyst in contrast to the other solutes, molecular weight enlargement of small organocatalysts is usually necessary. In the last few years, several synthetic methodologies have been developed to facilitate their recovery by nanofiltration. With the aim of extending the possibilities for the membrane-supported recovery of organocatalysts further, this contribution presents a review of the existing synthetic approaches for the molecular weight enlargement of organocatalysts. View Full-Text
Keywords: organocatalyst; organic solvent nanofiltration; size-enlargement; molecular weight enlargement; catalyst recovery organocatalyst; organic solvent nanofiltration; size-enlargement; molecular weight enlargement; catalyst recovery
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MDPI and ACS Style

Kisszékelyi, P.; Nagy, S.; Fehér, Z.; Huszthy, P.; Kupai, J. Membrane-Supported Recovery of Homogeneous Organocatalysts: A Review. Chemistry 2020, 2, 742-758. https://doi.org/10.3390/chemistry2030048

AMA Style

Kisszékelyi P, Nagy S, Fehér Z, Huszthy P, Kupai J. Membrane-Supported Recovery of Homogeneous Organocatalysts: A Review. Chemistry. 2020; 2(3):742-758. https://doi.org/10.3390/chemistry2030048

Chicago/Turabian Style

Kisszékelyi, Péter, Sándor Nagy, Zsuzsanna Fehér, Péter Huszthy, and József Kupai. 2020. "Membrane-Supported Recovery of Homogeneous Organocatalysts: A Review" Chemistry 2, no. 3: 742-758. https://doi.org/10.3390/chemistry2030048

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