The Experts below are selected from a list of 3528 Experts worldwide ranked by ideXlab platform
Leonard R. Macgillivray - One of the best experts on this subject based on the ideXlab platform.
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A Divergent Alkyne Diol Directs [2 + 2] Photoreactivity in the Solid State: Cocrystal, Supramolecular Catalysis, and Sublimation Effects.
Molecules, 2019Co-Authors: Shalisa M. Oburn, Jay Quentin, Leonard R. MacgillivrayAbstract:2-butyne-1,4-diol (1,4-bd) is used as a divergent ditopic template that directs trans-1,2-bis (n-pyridyl) ethylene (n,n′-bpe, where n = n′ = 3 or 4) to undergo an intermolecular [2 + 2] photodimerization in the solid state. The components of cocrystals [(1,4-bd)·(4,4′-bpe)]n and [(1,4-bd)·(3,3′-bpe)]n form 1D hydrogen-bonded polymers with n,n′-bpe assembled as infinite parallel stacks. The alkenes undergo [2 + 2] photocycloadditions to form rctt-tetrakis (n-pyridyl) cyclobutane (where n = 3 or 4). We demonstrate that the reactive solid involving 4,4′-bpe exhibits Supramolecular Catalysis.
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vortex grinding for mechanochemistry application for automated Supramolecular Catalysis and preparation of a metal organic framework
Chemical Communications, 2012Co-Authors: Jelena Stojakovic, Brian S. Farris, Leonard R. MacgillivrayAbstract:An automated grinding method based on a vortex mixer has been developed. The method enables simultaneous grinding and UV-irradiation, as well as in situ monitoring of solid-state reactivity. The method has been applied to a cocrystallization, Supramolecular Catalysis, and the preparation of a metal–organic framework.
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Vortex grinding for mechanochemistry: application for automated Supramolecular Catalysis and preparation of a metal–organic framework
Chemical Communications, 2012Co-Authors: Jelena Stojaković, Brian S. Farris, Leonard R. MacgillivrayAbstract:An automated grinding method based on a vortex mixer has been developed. The method enables simultaneous grinding and UV-irradiation, as well as in situ monitoring of solid-state reactivity. The method has been applied to a cocrystallization, Supramolecular Catalysis, and the preparation of a metal–organic framework.
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Supramolecular Catalysis in the organic solid state through dry grinding.
Angewandte Chemie, 2010Co-Authors: Anatoliy N. Sokolov, Dejan-krešimir Bučar, Jonas Baltrusaitis, Leonard R. MacgillivrayAbstract:[Figure Presented] Chemical mechanics: Hydrogen-bonddriven self-assembly and mechanochemistry are used to facilitate Supramolecular Catalysis in the solid state. Mortar-andpestle grinding proves to be an efficient means to achieve co-crystal formation and turnover using a physical mixture composed of an olefin and catalytic amounts of a ditopic template (see scheme). © 2010 Wiley-VCH Verlag GmbH &. Co. KGaA.
Yufeng Ren - One of the best experts on this subject based on the ideXlab platform.
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The amino side chains do matter: chemoselectivity in the one-pot three-component synthesis of 2-amino-4H-chromenes by Supramolecular Catalysis with amino-appended β-cyclodextrins (ACDs) in water
Catalysis Science & Technology, 2016Co-Authors: Yufeng Ren, Bo Yang, Xiali LiaoAbstract:In this study, the one-pot three-component synthesis of 2-amino-4H-chromenes was accomplished by Supramolecular Catalysis using a series of well-designed amino-appended β-cyclodextrins (ACDs) in water. The catalytic mechanism was elucidated in detail with 1D and 2D NMR and ESI-MS analyses, while the key roles of amino side chains of ACDs in the reaction chemoselectivity were addressed for the first time.
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Merging Supramolecular Catalysis and aminoCatalysis: amino-appended β-cyclodextrins (ACDs) as efficient and recyclable Supramolecular catalysts for the synthesis of tetraketones
RSC Advances, 2016Co-Authors: Yufeng Ren, Bo Yang, Xiali LiaoAbstract:Well-designed amino-appended β-cyclodextrins (ACDs) with an amino side chain of different lengths at the primary face of β-CD were synthesized and employed in the catalytic synthesis of a series of tetraketones as Supramolecular catalysts in water for the first time. Yields of 58–97% were obtained with up to 30 examples of substrate. The catalyst could be recycled easily, while a 92% yield and 84% rate of catalyst recovery could be achieved after 8 cycles of catalyst recycling. Moreover, a catalytic mechanism merging Supramolecular Catalysis and aminoCatalysis could be proposed through detailed 1D and 2D NMR, ESI-MS and Job plot analyses. This protocol retained the promising characteristics of ambient temperature, green medium, simple operation, broad substrate scope, excellent yields, superb catalyst recycling performance and unique catalytic mechanism.
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One‐Pot Synthesis of Tetrahydro‐4H‐chromenes by Supramolecular Catalysis in Water.
ChemInform, 2016Co-Authors: Yufeng Ren, Xiali Liao, Wei Zhang, Kai Gao, Xiaozhen ChenAbstract:The title chromenes are obtained by one-pot three-component reaction of various aldehydes, malononitrile, and dimedone using beta-cyclodextrin as catalyst under mild reaction conditions.
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one pot synthesis of tetrahydro 4h chromenes by Supramolecular Catalysis in water
ChemInform, 2016Co-Authors: Yufeng Ren, Xiali Liao, Wei Zhang, Kai Gao, Xiaozhen ChenAbstract:The title chromenes are obtained by one-pot three-component reaction of various aldehydes, malononitrile, and dimedone using beta-cyclodextrin as catalyst under mild reaction conditions.
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One-pot synthesis of tetrahydro-4H-chromenes by Supramolecular Catalysis in water
RSC Advances, 2015Co-Authors: Yufeng Ren, Xiali Liao, Wei Zhang, Kai Gao, Xiaozhen ChenAbstract:Tetrahydro-4H-chromenes were synthesized via a one-pot three-component condensation catalyzed by β-cyclodextrin (β-CD) under mild conditions in water. The Supramolecular reaction mechanism was extensively elucidated by spectroscopic analyses. This protocol could provide a unique strategy for the preparation of such biologically important scaffolds in a Supramolecular-catalyzed mode.
Xiaozhen Chen - One of the best experts on this subject based on the ideXlab platform.
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One‐Pot Synthesis of Tetrahydro‐4H‐chromenes by Supramolecular Catalysis in Water.
ChemInform, 2016Co-Authors: Yufeng Ren, Xiali Liao, Wei Zhang, Kai Gao, Xiaozhen ChenAbstract:The title chromenes are obtained by one-pot three-component reaction of various aldehydes, malononitrile, and dimedone using beta-cyclodextrin as catalyst under mild reaction conditions.
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one pot synthesis of tetrahydro 4h chromenes by Supramolecular Catalysis in water
ChemInform, 2016Co-Authors: Yufeng Ren, Xiali Liao, Wei Zhang, Kai Gao, Xiaozhen ChenAbstract:The title chromenes are obtained by one-pot three-component reaction of various aldehydes, malononitrile, and dimedone using beta-cyclodextrin as catalyst under mild reaction conditions.
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One-pot synthesis of tetrahydro-4H-chromenes by Supramolecular Catalysis in water
RSC Advances, 2015Co-Authors: Yufeng Ren, Xiali Liao, Wei Zhang, Kai Gao, Xiaozhen ChenAbstract:Tetrahydro-4H-chromenes were synthesized via a one-pot three-component condensation catalyzed by β-cyclodextrin (β-CD) under mild conditions in water. The Supramolecular reaction mechanism was extensively elucidated by spectroscopic analyses. This protocol could provide a unique strategy for the preparation of such biologically important scaffolds in a Supramolecular-catalyzed mode.
Beatriu Escuder - One of the best experts on this subject based on the ideXlab platform.
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towards Supramolecular Catalysis with small self assembled peptides
Israel Journal of Chemistry, 2015Co-Authors: Nishant Singh, Juan F. Miravet, Marta Tenasolsona, Beatriu EscuderAbstract:Self-assembly of small peptides offers unique opportunities for the bottom-up construction of Supramolecular catalysts that aim to emulate the efficiency and selectivity of natural enzymes. Small, information-rich, simple molecules based on amino acids can self-organise autonomously into complex systems with emergent catalytic properties. The power of noncovalent interactions can be used to construct Supramolecular peptidic tertiary structures. Moreover, specific functional groups present in amino acid side-chains may present either a catalytic activity by themselves or be able to bind cofactors such as metal ions. In this scenario, although relevant progress has been achieved in recent years, promising applications in biomaterials science are foreseen. In this review, we discuss the state-of-the-art of this approach at the interface between Supramolecular chemistry and peptide science.
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Towards Supramolecular Catalysis with Small Self‐assembled Peptides
Israel Journal of Chemistry, 2015Co-Authors: Nishant Singh, Marta Tena-solsona, Juan F. Miravet, Beatriu EscuderAbstract:Self-assembly of small peptides offers unique opportunities for the bottom-up construction of Supramolecular catalysts that aim to emulate the efficiency and selectivity of natural enzymes. Small, information-rich, simple molecules based on amino acids can self-organise autonomously into complex systems with emergent catalytic properties. The power of noncovalent interactions can be used to construct Supramolecular peptidic tertiary structures. Moreover, specific functional groups present in amino acid side-chains may present either a catalytic activity by themselves or be able to bind cofactors such as metal ions. In this scenario, although relevant progress has been achieved in recent years, promising applications in biomaterials science are foreseen. In this review, we discuss the state-of-the-art of this approach at the interface between Supramolecular chemistry and peptide science.
Xiali Liao - One of the best experts on this subject based on the ideXlab platform.
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The amino side chains do matter: chemoselectivity in the one-pot three-component synthesis of 2-amino-4H-chromenes by Supramolecular Catalysis with amino-appended β-cyclodextrins (ACDs) in water
Catalysis Science & Technology, 2016Co-Authors: Yufeng Ren, Bo Yang, Xiali LiaoAbstract:In this study, the one-pot three-component synthesis of 2-amino-4H-chromenes was accomplished by Supramolecular Catalysis using a series of well-designed amino-appended β-cyclodextrins (ACDs) in water. The catalytic mechanism was elucidated in detail with 1D and 2D NMR and ESI-MS analyses, while the key roles of amino side chains of ACDs in the reaction chemoselectivity were addressed for the first time.
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Merging Supramolecular Catalysis and aminoCatalysis: amino-appended β-cyclodextrins (ACDs) as efficient and recyclable Supramolecular catalysts for the synthesis of tetraketones
RSC Advances, 2016Co-Authors: Yufeng Ren, Bo Yang, Xiali LiaoAbstract:Well-designed amino-appended β-cyclodextrins (ACDs) with an amino side chain of different lengths at the primary face of β-CD were synthesized and employed in the catalytic synthesis of a series of tetraketones as Supramolecular catalysts in water for the first time. Yields of 58–97% were obtained with up to 30 examples of substrate. The catalyst could be recycled easily, while a 92% yield and 84% rate of catalyst recovery could be achieved after 8 cycles of catalyst recycling. Moreover, a catalytic mechanism merging Supramolecular Catalysis and aminoCatalysis could be proposed through detailed 1D and 2D NMR, ESI-MS and Job plot analyses. This protocol retained the promising characteristics of ambient temperature, green medium, simple operation, broad substrate scope, excellent yields, superb catalyst recycling performance and unique catalytic mechanism.
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One‐Pot Synthesis of Tetrahydro‐4H‐chromenes by Supramolecular Catalysis in Water.
ChemInform, 2016Co-Authors: Yufeng Ren, Xiali Liao, Wei Zhang, Kai Gao, Xiaozhen ChenAbstract:The title chromenes are obtained by one-pot three-component reaction of various aldehydes, malononitrile, and dimedone using beta-cyclodextrin as catalyst under mild reaction conditions.
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one pot synthesis of tetrahydro 4h chromenes by Supramolecular Catalysis in water
ChemInform, 2016Co-Authors: Yufeng Ren, Xiali Liao, Wei Zhang, Kai Gao, Xiaozhen ChenAbstract:The title chromenes are obtained by one-pot three-component reaction of various aldehydes, malononitrile, and dimedone using beta-cyclodextrin as catalyst under mild reaction conditions.
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One-pot synthesis of tetrahydro-4H-chromenes by Supramolecular Catalysis in water
RSC Advances, 2015Co-Authors: Yufeng Ren, Xiali Liao, Wei Zhang, Kai Gao, Xiaozhen ChenAbstract:Tetrahydro-4H-chromenes were synthesized via a one-pot three-component condensation catalyzed by β-cyclodextrin (β-CD) under mild conditions in water. The Supramolecular reaction mechanism was extensively elucidated by spectroscopic analyses. This protocol could provide a unique strategy for the preparation of such biologically important scaffolds in a Supramolecular-catalyzed mode.
