Catalysts for Henry Reaction

A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Catalysis in Organic and Polymer Chemistry".

Deadline for manuscript submissions: closed (15 December 2019) | Viewed by 9062

Special Issue Editor


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Guest Editor
Centro de Química Estrutural e Departamento de Engenharia Química, Institute of Molecular Sciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
Interests: functionalized materials; C-scorpionate-based catalysts; sustainable catalytic systems; homogeneous and supported catalysis; nanocatalysis; molecular electrochemistry
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Special Issue Information

Dear Colleagues,

The Henry (nitroaldol) reaction, the reaction between an in situ generated nitronate species and a carbonyl compound, is one of the most important carbon–carbon bond formation reactions in organic chemistry due to the synthetic utility of its corresponding products (β-nitroalcohols). Further transformation of such species provides an efficient access to interesting and highly functionalized intermediates such as nitroalkenes, 1,2-amino alcohols or α-hydroxy carboxylic acids. Due to the practical importance of this reaction, much attention has been paid to its diastereoselectivity, but the stereochemical control of the two newly generated carbon centers remains a difficult task to achieve. A stereoselective synthesis of either the anti or syn isomer would be desirable and efforts are focused on the development of catalytic diastereo- or enantio-selective processes.

This Special Issue is aimed at covering recent advances in the formation of C–C bonds via the Henry reaction. Original research papers and short reviews on the synthesis of compounds of industrial interest using this catalytic process, identification of new catalysts, synthesis of new ligands improving C–C coupling selectivity, activity and stability of catalysts in the context of clean catalytic processes are very welcome.

Prof. Dr. Luísa Margarida Martins
Guest Editor

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Keywords

  • Nitroaldol reaction
  • Selective C-C coupling
  • Enantioselective C-C bond formation
  • Organocatalyst
  • Homogeneous catalysis
  • Heterogeneous catalysis
  • Sustainable synthesis

Published Papers (2 papers)

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Research

15 pages, 2414 KiB  
Article
Hydrosoluble Complexes Bearing Tris(pyrazolyl)methane Sulfonate Ligand: Synthesis, Characterization and Catalytic Activity for Henry Reaction
by Abdallah G. Mahmoud, Luísa M. D. R. S. Martins, M. Fátima C. Guedes da Silva and Armando J. L. Pombeiro
Catalysts 2019, 9(7), 611; https://doi.org/10.3390/catal9070611 - 18 Jul 2019
Cited by 7 | Viewed by 3717
Abstract
The catalytic activity of the water-soluble scorpionate coordination compounds [Cu(-NN’O-Tpms)2] (1), [Mn(Tpms)2] (2) and Li[FeCl2(-NN’N’’-Tpms)] (3) [Tpms = tris(pyrazolyl)-methane sulfonate, O3SC(pz)3], were studied towards the (Henry) reaction [...] Read more.
The catalytic activity of the water-soluble scorpionate coordination compounds [Cu(-NN’O-Tpms)2] (1), [Mn(Tpms)2] (2) and Li[FeCl2(-NN’N’’-Tpms)] (3) [Tpms = tris(pyrazolyl)-methane sulfonate, O3SC(pz)3], were studied towards the (Henry) reaction between benzaldehyde and nitromethane or nitroethane in aqueous medium to afford, respectively, 2-nitro-1-phenylethanol or 2-nitro-1-phenylpropanol, the latter in the syn and the anti diastereoisomeric forms. Complex 1 exhibited the highest activity under the optimum experimental conditions and was used to broaden the scope of the reaction to include several aromatic aldehydes achieving yields up to 94%. Full article
(This article belongs to the Special Issue Catalysts for Henry Reaction)
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11 pages, 1684 KiB  
Communication
Synthesis and Organocatalytic Asymmetric Nitro-aldol Initiated Cascade Reactions of 2-Acylbenzonitriles Leading to 3,3-Disubstituted Isoindolinones
by Fabio Romano, Antonia Di Mola, Laura Palombi, Maximilian Tiffner, Mario Waser and Antonio Massa
Catalysts 2019, 9(4), 327; https://doi.org/10.3390/catal9040327 - 02 Apr 2019
Cited by 13 | Viewed by 3939
Abstract
In this work, we investigated two strategies for the synthesis of the challenging ketones 2-acylbenzonitriles and we report their use as electrophiles in asymmetric organocatalytic cascade reactions with nitromethane. Promising results were obtained in the presence of chiral bifunctional ammonium salts under phase [...] Read more.
In this work, we investigated two strategies for the synthesis of the challenging ketones 2-acylbenzonitriles and we report their use as electrophiles in asymmetric organocatalytic cascade reactions with nitromethane. Promising results were obtained in the presence of chiral bifunctional ammonium salts under phase transfer conditions, which led to novel 3,3-disubstituted isoindolinones in quantitative yields and moderate enantioselectivity. Full article
(This article belongs to the Special Issue Catalysts for Henry Reaction)
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