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Multivariate Metal–Organic Frameworks as Multifunctional Heterogeneous Asymmetric Catalysts for Sequential Reactions

Xia, Qingchun, Li, Zijian, Tan, Chunxia, Liu, Yan, Gong, Wei, Cui, Yong·2017·Journal of the American Chemical Society

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Abstract

The search for versatile heterogeneous catalysts with multiple active sites for broad asymmetric transformations has long been of great interest, but it remains a formidable synthetic challenge. Here we demonstrate that multivariate metal-organic frameworks (MTV-MOFs) can be used as an excellent platform to engineer heterogeneous catalysts featuring multiple and cooperative active sites. An isostructural series of 2-fold interpenetrated MTV-MOFs that contain up to three different chiral metallosalen catalysts was constructed and used as efficient and recyclable heterogeneous catalysts for a variety of asymmetric sequential alkene epoxidation/epoxide ring-opening reactions. Interpenetration of the frameworks brings metallosalen units adjacent to each other, allowing cooperative activation, which results in improved efficiency and enantioselectivity over the sum of the individual parts. The fact that manipulation of molecular catalysts in MTV-MOFs can control the activities and selectivities would facilitate the design of novel multifunctional materials for enantioselective processes.

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See all 265

Authors: Xia, Q., Li, Z., Tan, C., Liu, Y., Gong, W., & Cui, Y.
Venue: Journal of the American Chemical Society
Publisher: American Chemical Society (ACS)
Published: 2017-06-06
Volume: 139
Issue: 24
Pages: 8259-8266
ISSN: 0002-7863 (ISSN-L)
1520-5126
DOI: 10.1021/jacs.7b03113
OpenAlex: W2619930446
Cited by: 265
References: 72
FWCI: 12.68
Type: journal article
Language: en
Open access: closed

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Multivariate Metal–Organic Frameworks as Multifunctional Heterogeneous Asymmetric Catalysts for Sequential Reactions

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