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Ziyaei Halimehjani A, Ghaffari Z. The chemistry of 2-hydroxy-β-nitrostyrenes: versatile intermediates in synthetic organic chemistry. Org Biomol Chem 2023; 21:2653-2688. [PMID: 36916212 DOI: 10.1039/d3ob00015j] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Abstract
The applications of 2-hydroxy-β-nitrostyrenes as efficient bifunctional intermediates in organic synthesis are investigated in this review. For this purpose, reactions of 2-hydroxy-β-nitrostyrenes with diverse molecules, including carbonyl compounds, 1,3-dicarbonyl compounds, α,β-unsaturated carbonyl compounds, hemiacetals, nitroalkenes, γ-butenolides, tetronic acid, azalactones, pyrazolones, enamines, malononitrile, methyleneindolinones, ylides, etc., were investigated to construct interesting biologically active scaffolds such as chromans, chromenes, coumarins, benzofurans and their fused and spiro rings, natural products, and other useful cyclic and acyclic compounds. The main focus is on the asymmetric synthesis of these compounds via cascade/domino/tandem reactions catalyzed by chiral organocatalysts. In this review, around 60 papers reported between the years 2000 and 2022 are presented.
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Affiliation(s)
- Azim Ziyaei Halimehjani
- Department of Chemistry, Sharif University of Technology, P.O. Box 11155-9516, Tehran, Iran. .,Faculty of Chemistry, Kharazmi University, 49 Mofateh St, 15719-14911, Tehran, Iran.
| | - Zahra Ghaffari
- Faculty of Chemistry, Kharazmi University, 49 Mofateh St, 15719-14911, Tehran, Iran.
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2
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Catalytic Efficiency of Primary α-Amino Amides as Multifunctional Organocatalysts in Recent Asymmetric Organic Transformations. Catalysts 2022. [DOI: 10.3390/catal12121674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Chiral primary α-amino amides, consisting of an adjacent enamine bonding site (Bronsted base site), a hydrogen bonding site (Bronsted acid site), and flexible bulky substituent groups to modify the steric factor, are proving to be extremely valuable bifunctional organocatalysts for a wide range of asymmetric organic transformations. Primary α-amino amides are less expensive alternatives to other primary amino organocatalysts, such as chiral diamines and cinchona-alkaloid-derived primary amines, as they are easy to synthesize, air-stable, and allow for the incorporation of a variety of functional groups. In recent years, we have demonstrated the catalytic use of simple primary α-amino amides and their derivatives as organocatalysts for the aldol reaction, Strecker reaction, Michael tandem reaction, allylation of aldehydes, reduction of N-Aryl mines, opening of epoxides, hydrosilylation, asymmetric hydrogen transfer, and N-specific nitrosobenzene reaction with aldehydes.
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3
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Kodama K, Maruyama K, Hirose T. Chiral 1,3-aminosquaramides derived from cis-2-benzamidocyclohexanecarboxylic acid as organocatalysts for asymmetric Michael addition reactions. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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4
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Chakroborty S, V. B. Unnamatla M, Panda P, C. Ramírez-Loṕez S, A. Garcia Eleno M, C. Yañez E, Strekowski L. Recent Progress on Synthesis of Spirochromanone and Spirochromane Derivatives. HETEROCYCLES 2022. [DOI: 10.3987/rev-21-965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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5
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Ma Z, Liu Z, Wang C, Chen X, Tao J, Lv Q. A novel isosteviol-based bifunctional squaramide organocatalyst for enantioselective Michael addition of acetylacetone to nitroolefins. Chirality 2021; 34:77-85. [PMID: 34747045 DOI: 10.1002/chir.23391] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 10/20/2021] [Accepted: 10/23/2021] [Indexed: 11/09/2022]
Abstract
Chiral amine-squaramide is a kind of effective hydrogen bond donor bifunctional catalyst to promote many asymmetric transformations. In this paper, novel chiral tertiary amine-squaramide derived from the natural product of the stevioside was developed and applied into the asymmetric Michael addition of acetylacetone to nitroolefins. This asymmetric reaction performed well, and a series of enantiomerically enriched compounds were obtained in high yields (up to 96%) with excellent enantioselectivities (up to 99% ee).
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Affiliation(s)
- Zhiwei Ma
- Faculty of Science, Henan University of Animal Husbandry and Economy, Zhengzhou, China
| | - Zhijing Liu
- Faculty of Science, Henan University of Animal Husbandry and Economy, Zhengzhou, China
| | - Chuanchuan Wang
- Faculty of Science, Henan University of Animal Husbandry and Economy, Zhengzhou, China
| | - Xiaopei Chen
- Faculty of Science, Henan University of Animal Husbandry and Economy, Zhengzhou, China
| | - Jingchao Tao
- College of Chemistry, Zhengzhou University, Zhengzhou, China
| | - Quanjian Lv
- Faculty of Science, Henan University of Animal Husbandry and Economy, Zhengzhou, China
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6
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Šebesta R, Veverková E, Molnosiová P. Asymmetric Sequential Michael Addition and Cyclization Reactions of 2-(2-Nitrovinyl)phenols Catalyzed by Bifunctional Amino-Squaramides. SYNOPEN 2021. [DOI: 10.1055/s-0040-1719843] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
AbstractIn this work, we describe the Michael addition–cyclization reaction of 2-(2-nitrovinyl)phenol with two different reactive Michael donors, which lead to chiral benzopyran derivatives. Specifically, bifunctional amino-squaramides with one or two chiral units in the side chains were evaluated as catalysts in these transformations. Furthermore, the utility of selected green solvents as reaction media for these processes was also tested. The best result was achieved with methyl-cyclopentanone-2-carboxylate as the Michael donor in ethyl (–)-l-lactate with quinine-based amino-squaramide as catalyst (yield 72%, dr >99:1, ee 99%).
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Díaz-Salazar H, Jiménez EI, Vallejo Narváez WE, Rocha-Rinza T, Hernández-Rodríguez M. Bifunctional squaramides with benzyl-like fragments: analysis of CH⋯π interactions by a multivariate linear regression model and quantum chemical topology. Org Chem Front 2021. [DOI: 10.1039/d0qo01610a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A multivariate linear regression model and quantum chemical topology are used for the quantitative description of non-covalent interactions in the transition state of the Michael addition catalyzed by bifunctional squaramides.
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Affiliation(s)
- Howard Díaz-Salazar
- Instituto de Química
- Universidad Nacional Autónoma de México
- Circuito Exterior
- Ciudad Universitaria
- Mexico
| | - Eddy I. Jiménez
- Instituto de Química
- Universidad Nacional Autónoma de México
- Circuito Exterior
- Ciudad Universitaria
- Mexico
| | - Wilmer E. Vallejo Narváez
- Instituto de Química
- Universidad Nacional Autónoma de México
- Circuito Exterior
- Ciudad Universitaria
- Mexico
| | - Tomás Rocha-Rinza
- Instituto de Química
- Universidad Nacional Autónoma de México
- Circuito Exterior
- Ciudad Universitaria
- Mexico
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8
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Novel carbohydrate-based thioureas as organocatalysts for asymmetric michael addition of 1,3-dicarbonyl compounds to nitroolefins. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131339] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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9
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Vinu M, Sivasankar K, Prabu S, Han JL, Lin CH, Yang CC, Demel J. Tetrazine-Based Metal-Organic Frameworks as Scaffolds for Post-Synthetic Modification by the Click Reaction. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.201901230] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Madhan Vinu
- Department of Materials Science; Institute of Inorganic Chemistry of the Czech Academy of Sciences; v.v.i. Husinec-Řež 1001 25068 Řež Czech Republic
- Department of Chemistry; Karunya Institute of Technology and Sciences (Deemed-to-be University); 641 114 Coimbatore India
- Department of Chemistry; Chung-Yuan Christian University; 32023 Taoyuan City Taiwan
| | | | - Samikannu Prabu
- Department of Chemistry; Chung-Yuan Christian University; 32023 Taoyuan City Taiwan
| | - Jeng-Liang Han
- Department of Chemistry; Chung-Yuan Christian University; 32023 Taoyuan City Taiwan
| | - Chia-Her Lin
- Department of Chemistry; Chung-Yuan Christian University; 32023 Taoyuan City Taiwan
| | - Chun-Chuen Yang
- Department of Physics; Chung-Yuan Christian University; 32023 Taoyuan City Taiwan
| | - Jan Demel
- Department of Materials Science; Institute of Inorganic Chemistry of the Czech Academy of Sciences; v.v.i. Husinec-Řež 1001 25068 Řež Czech Republic
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10
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Jao TJ, Akula PS, Hong BC, Lee GH. Catalytic 1,2-Rearrangements: Organocatalyzed Michael/Semi-Pinacol-like Rearrangement Cascade of 1,3-Diones and Nitroolefins. Org Lett 2020; 22:62-67. [PMID: 31829018 DOI: 10.1021/acs.orglett.9b03912] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
New types of organocatalytic 1,2-rearrangements, which resemble the Smiles-like or semi-pinacol-like rearrangement, of Michael adducts of 1,3-dicarbonyl-2-alkyl compounds and nitroalkenes have been realized. Unlike the well-known conjugate addition, the reaction affords the 1-phenyl-1-nitroalkanes via unprecedented rearrangement and cascade reactions. Structures of the appropriate products were unambiguously characterized by X-ray crystallography.
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Affiliation(s)
- Tsung-Jung Jao
- Department of Chemistry and Biochemistry , National Chung Cheng University , Chia-Yi 621 , Taiwan, R.O.C
| | - Pavan Sudheer Akula
- Department of Chemistry and Biochemistry , National Chung Cheng University , Chia-Yi 621 , Taiwan, R.O.C
| | - Bor-Cherng Hong
- Department of Chemistry and Biochemistry , National Chung Cheng University , Chia-Yi 621 , Taiwan, R.O.C
| | - Gene-Hsiang Lee
- Instrumentation Center , National Taiwan University , Taipei 106 , Taiwan, R.O.C
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11
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Rodríguez-Ferrer P, Naharro D, Maestro A, Andrés JM, Pedrosa R. Chiral Bifunctional Thiosquaramides as Organocatalysts in the Synthesis of Enantioenriched 3,3-Disubstituted Oxindoles. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901327] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Patricia Rodríguez-Ferrer
- Instituto CINQUIMA and Departamento de Química Orgánica; Facultad de Ciencias; Universidad de Valladolid; Paseo de Belén 7 47011 Valladolid Spain
| | - Daniel Naharro
- Instituto CINQUIMA and Departamento de Química Orgánica; Facultad de Ciencias; Universidad de Valladolid; Paseo de Belén 7 47011 Valladolid Spain
| | - Alicia Maestro
- Instituto CINQUIMA and Departamento de Química Orgánica; Facultad de Ciencias; Universidad de Valladolid; Paseo de Belén 7 47011 Valladolid Spain
| | - José M. Andrés
- Instituto CINQUIMA and Departamento de Química Orgánica; Facultad de Ciencias; Universidad de Valladolid; Paseo de Belén 7 47011 Valladolid Spain
| | - Rafael Pedrosa
- Instituto CINQUIMA and Departamento de Química Orgánica; Facultad de Ciencias; Universidad de Valladolid; Paseo de Belén 7 47011 Valladolid Spain
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12
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Sanz-Novo M, Alonso ER, León I, Alonso JL. The Shape of the Archetypical Oxocarbon Squaric Acid and Its Water Clusters. Chemistry 2019; 25:10748-10755. [PMID: 31283059 DOI: 10.1002/chem.201901916] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Indexed: 12/15/2022]
Abstract
Herein, a full structural description is presented for the archetypical supramolecular synthone squaric acid (3,4-dihydroxy-3-cyclobutene-1,2-dione), placed in the gas phase by laser ablation and characterized by chirped pulse Fourier transform microwave technique. Free from natural environmental disturbances, two different anti-anti and syn-anti planar forms and the corresponding water clusters have been revealed in a supersonic expansion. The substitution structure of the most stable anti-anti conformer has also been extracted from the analysis of the rotational spectra of the 13 C and 18 O isotopic species in their natural abundance. The interplay between inter- and intramolecular interactions involving hydroxy and carbonyl groups has been analyzed by QTAIM (quantum theory of atoms in molecules) methods for squaric acid and its water clusters to understand their chemical behavior and further rationalize their role in the stabilization of these molecular systems.
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Affiliation(s)
- Miguel Sanz-Novo
- Grupo de Espectroscopía Molecular (GEM), Edificio Quifima Laboratorios de EspectroscopíayBioespectroscopía, Unidad Asociada CSIC, Parque Científico Uva, Universidad de Valladolid, Paseo de Belén 5, 47011, Valladolid, Spain
| | - Elena R Alonso
- Grupo de Espectroscopía Molecular (GEM), Edificio Quifima Laboratorios de EspectroscopíayBioespectroscopía, Unidad Asociada CSIC, Parque Científico Uva, Universidad de Valladolid, Paseo de Belén 5, 47011, Valladolid, Spain
| | - Iker León
- Grupo de Espectroscopía Molecular (GEM), Edificio Quifima Laboratorios de EspectroscopíayBioespectroscopía, Unidad Asociada CSIC, Parque Científico Uva, Universidad de Valladolid, Paseo de Belén 5, 47011, Valladolid, Spain
| | - J L Alonso
- Grupo de Espectroscopía Molecular (GEM), Edificio Quifima Laboratorios de EspectroscopíayBioespectroscopía, Unidad Asociada CSIC, Parque Científico Uva, Universidad de Valladolid, Paseo de Belén 5, 47011, Valladolid, Spain
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13
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Reznikov AN, Sibiryakova AE, Baimuratov MR, Golovin EV, Rybakov VB, Klimochkin YN. Synthesis of non-racemic 4-nitro-2-sulfonylbutan-1-ones via Ni(II)-catalyzed asymmetric Michael reaction of β-ketosulfones. Beilstein J Org Chem 2019; 15:1289-1297. [PMID: 31293677 PMCID: PMC6604683 DOI: 10.3762/bjoc.15.127] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 05/22/2019] [Indexed: 12/21/2022] Open
Abstract
Functionally substituted sulfones with stereogenic centers are valuable reagents in organic synthesis and key motifs in some bioactive compounds. The asymmetric Michael addition of β-ketosulfones to conjugated nitroalkenes in the presence of Ni(II) complexes with various chiral vicinal diamines was studied. This reaction provides convenient access to non-racemic 4-nitro-2-sulfonylbutan-1-ones with two stereocenters with high yield and excellent enantioselectivity (up to 99%). It has been established that the catalytic Michael reaction itself was carried out with high diastereoselectivity, but the Michael adducts may epimerize at the C-2 position at a significant rate. Conditions for the preparation of individual diastereomers were found.
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Affiliation(s)
- Alexander N Reznikov
- Department of Organic Chemistry, Samara State Technical University, Molodogvardeyskaya str., 244, 443100 Samara, Russian Federation
| | - Anastasiya E Sibiryakova
- Department of Organic Chemistry, Samara State Technical University, Molodogvardeyskaya str., 244, 443100 Samara, Russian Federation
| | - Marat R Baimuratov
- Department of Organic Chemistry, Samara State Technical University, Molodogvardeyskaya str., 244, 443100 Samara, Russian Federation
| | - Eugene V Golovin
- Department of Organic Chemistry, Samara State Technical University, Molodogvardeyskaya str., 244, 443100 Samara, Russian Federation
| | - Victor B Rybakov
- Department of Chemistry, Moscow State University, Leninskie Gory, 1, 119991, Mosсow, Russian Federation
| | - Yuri N Klimochkin
- Department of Organic Chemistry, Samara State Technical University, Molodogvardeyskaya str., 244, 443100 Samara, Russian Federation
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14
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Willig F, Lang J, Hans AC, Ringenberg MR, Pfeffer D, Frey W, Peters R. Polyfunctional Imidazolium Aryloxide Betaine/Lewis Acid Catalysts as Tools for the Asymmetric Synthesis of Disfavored Diastereomers. J Am Chem Soc 2019; 141:12029-12043. [DOI: 10.1021/jacs.9b04902] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Felix Willig
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Johannes Lang
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Andreas C. Hans
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Mark R. Ringenberg
- Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Daniel Pfeffer
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Wolfgang Frey
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - René Peters
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
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15
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Rodríguez‐Ferrer P, Sanz‐Novo M, Maestro A, Andrés JM, Pedrosa R. Synthesis of Enantioenriched 3‐Amino‐3‐Substituted Oxindoles by Stereoselective Mannich Reaction Catalyzed by Supported Bifunctional Thioureas. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900414] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Patricia Rodríguez‐Ferrer
- Instituto CINQUIMA and Departamento de Química Orgánica, Facultad de CienciasUniversidad de Valladolid Paseo de Belén 7 47011-Valladolid Spain
| | - Miguel Sanz‐Novo
- Instituto CINQUIMA and Departamento de Química Orgánica, Facultad de CienciasUniversidad de Valladolid Paseo de Belén 7 47011-Valladolid Spain
| | - Alicia Maestro
- Instituto CINQUIMA and Departamento de Química Orgánica, Facultad de CienciasUniversidad de Valladolid Paseo de Belén 7 47011-Valladolid Spain
| | - José M. Andrés
- Instituto CINQUIMA and Departamento de Química Orgánica, Facultad de CienciasUniversidad de Valladolid Paseo de Belén 7 47011-Valladolid Spain
| | - Rafael Pedrosa
- Instituto CINQUIMA and Departamento de Química Orgánica, Facultad de CienciasUniversidad de Valladolid Paseo de Belén 7 47011-Valladolid Spain
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16
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Asymmetric organocatalytic cascade Michael/acyl transfer reaction of 2-hydroxychalcones with α-nitroketones. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.03.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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17
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Kale A, Medishetti N, Kanugala S, C GK, Atmakur K. Na 2S-promoted reduction of azides in water: synthesis of pyrazolopyridines in one pot and evaluation of antimicrobial activity. Org Biomol Chem 2019; 17:3186-3194. [PMID: 30839017 DOI: 10.1039/c8ob03171a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reduction of various azides using Na2S has been accomplished in water, and, in situ, the resulting amines on reaction with various ketones lead to pyrazolo[3,4-b]pyridines in one pot. Thus, a number of new trifluoromethyl-substituted pyrazolo[3,4-b]pyridine compounds have been prepared and screened for antimicrobial activity against different Gram-positive and Gram-negative strains. A good number of compounds, 4a, 4b, 4d, 4f, 4i, 4k, 4l, 4m, 4r and 4s, were found to possess promising activity. Notably, Na2S on hydrolysis in water generates H2S and NaOH, which facilitate the reduction of azides followed by intramolecular cyclization leading to the title compounds. To the best of our knowledge, this is the first report of the synthesis of the title compounds in aqueous medium in a one-pot reaction.
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Affiliation(s)
- Ashok Kale
- Fluoro & Agro Chemicals Department, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500007, India.
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18
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Bania N, Pan SC. Organocatalytic asymmetric Michael/hemiketalization/acyl transfer reaction of 1,3-propanediones with (E)-2-(2-nitrovinyl)phenols. Org Biomol Chem 2019; 17:1718-1721. [DOI: 10.1039/c8ob01771a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
An organocatalytic asymmetric cascade Michael/hemiketalization/acyl transfer reaction between (E)-2-(2-nitrovinyl)phenols and 1,3-propanediones is disclosed to generate products having keto, ester and nitro functionalities.
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Affiliation(s)
- Nimisha Bania
- Department of Chemistry
- Indian Institute of Technology Guwahati
- India
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19
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Nakano H, Ganesan D, Chennapuram M, Begum Z, Seki C, Okuyama Y, Kwon E, Uwai K, Tokiwa M, Tokiwa S, Takeshita M. Sugar Based γ-Amino Alcohol Organocatalyst for Asymmetric Michael Addition of β-Keto Esters with Nitroolefins. HETEROCYCLES 2019. [DOI: 10.3987/com-19-14172] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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20
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Valle M, Martín L, Maestro A, Andrés JM, Pedrosa R. Chiral Bifunctional Thioureas and Squaramides Grafted into Old Polymers of Intrinsic Microporosity for Novel Applications. Polymers (Basel) 2018; 11:E13. [PMID: 30959997 PMCID: PMC6401694 DOI: 10.3390/polym11010013] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 12/17/2018] [Accepted: 12/18/2018] [Indexed: 11/16/2022] Open
Abstract
We have prepared different polymeric chiral bifunctional thioureas and squaramides by modification of the very well-known polymers of intrinsic microporosity (PIM), specifically PIM-1 and PIM-CO-1, to be used as recoverable organocatalysts. The installation of the chiral structures into the polymers has been done in two or three steps in high yields. The catalytic activity of the resulting materials has been proved in the stereoselective nitro-Michael addition and in a cascade process, which allows the synthesis of enantioenriched 4H-chromene derivatives. Squaramide II and thiourea III have been used in six cycles maintaining their activity.
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Affiliation(s)
- María Valle
- Instituto CINQUIMA and Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Valladolid, Paseo de Belén 7, 47011 Valladolid, Spain.
| | - Laura Martín
- Instituto CINQUIMA and Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Valladolid, Paseo de Belén 7, 47011 Valladolid, Spain.
| | - Alicia Maestro
- Instituto CINQUIMA and Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Valladolid, Paseo de Belén 7, 47011 Valladolid, Spain.
| | - José M Andrés
- Instituto CINQUIMA and Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Valladolid, Paseo de Belén 7, 47011 Valladolid, Spain.
| | - Rafael Pedrosa
- Instituto CINQUIMA and Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Valladolid, Paseo de Belén 7, 47011 Valladolid, Spain.
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Abstract
The use of small organic molecules as catalysts has gained increasing importance recently. These substances, the so-called organocatalysts, present a lot of advantages, like being less toxic, less polluting, and more economically viable than the organometallic catalysts that dominate asymmetric synthesis. This work intends to briefly show some classic works and recent publications, explaining the advantages of organocatalysis and the different types of compounds used in this field, as well as their course of action.
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22
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Li ZY, Tong HX, Chen Y, Su HK, Xiao T, Sun XQ, Wang L. Asymmetric Michael addition reactions catalyzed by calix[4]thiourea cyclohexanediamine derivatives. Beilstein J Org Chem 2018; 14:1901-1907. [PMID: 30112095 PMCID: PMC6071695 DOI: 10.3762/bjoc.14.164] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2018] [Accepted: 06/29/2018] [Indexed: 12/19/2022] Open
Abstract
A number of upper rim-functionalized calix[4]thiourea cyclohexanediamine derivatives have been designed, synthesized and used as catalysts for enantioselective Michael addition reactions between nitroolefins and acetylacetone. The optimal catalyst 2 with a mono-thiourea group exhibited good performance in the presence of water/toluene (v/v = 1:2). Under the optimal reaction conditions, high yields of up to 99% and moderate to good enantioselectivities up to 94% ee were achieved. Detailed experiments clearly showed that the upper rim-functionalized hydrophobic calixarene scaffold played an important role in cooperation with the catalytic center to the good reactivities and enantioselectivities.
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Affiliation(s)
- Zheng-Yi Li
- Jiangsu Province Key Laboratory of Fine Petrochemical Engineering, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Hong-Xiao Tong
- Jiangsu Province Key Laboratory of Fine Petrochemical Engineering, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Yuan Chen
- Jiangsu Province Key Laboratory of Fine Petrochemical Engineering, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
- Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Hong-Kui Su
- Jiangsu Province Key Laboratory of Fine Petrochemical Engineering, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Tangxin Xiao
- Jiangsu Province Key Laboratory of Fine Petrochemical Engineering, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Xiao-Qiang Sun
- Jiangsu Province Key Laboratory of Fine Petrochemical Engineering, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Leyong Wang
- Jiangsu Province Key Laboratory of Fine Petrochemical Engineering, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
- Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
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23
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Andrés JM, Maestro A, Valle M, Pedrosa R. Chiral Bifunctional Thioureas and Squaramides and Their Copolymers as Recoverable Organocatalysts. Stereoselective Synthesis of 2-Substituted 4-Amino-3-nitrobenzopyrans and 3-Functionalized 3,4-Diamino-4H-Chromenes. J Org Chem 2018; 83:5546-5557. [DOI: 10.1021/acs.joc.8b00567] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- José M. Andrés
- Instituto CINQUIMA and Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Valladolid, Paseo de Belén 7, 47011-Valladolid, Spain
| | - Alicia Maestro
- Instituto CINQUIMA and Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Valladolid, Paseo de Belén 7, 47011-Valladolid, Spain
| | - María Valle
- Instituto CINQUIMA and Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Valladolid, Paseo de Belén 7, 47011-Valladolid, Spain
| | - Rafael Pedrosa
- Instituto CINQUIMA and Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Valladolid, Paseo de Belén 7, 47011-Valladolid, Spain
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24
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Ruan S, Lin X, Xie L, Lin L, Feng X, Liu X. Asymmetric synthesis of 3-aminodihydrocoumarins via the chiral guanidine catalyzed cascade reaction of azlactones. Org Chem Front 2018. [DOI: 10.1039/c7qo00768j] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A new asymmetric preparative method of 3-aminodihydrocoumarins via reactions of azlactones and 2-nitrovinylphenols using chiral bifunctional guanidine catalysts.
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Affiliation(s)
- Sai Ruan
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Xiaobin Lin
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Lihua Xie
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
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25
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Chen G, Liang G, Wang Y, Deng P, Zhou H. A homodinuclear cobalt complex for the catalytic asymmetric Michael reaction of β-ketoesters to nitroolefins. Org Biomol Chem 2018; 16:3841-3850. [DOI: 10.1039/c8ob00773j] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A homodinuclear Co2/aminophenol sulfonamide complex has been developed for the asymmetric Michael reaction.
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Affiliation(s)
- Guanghui Chen
- School of Pharmaceutical Science
- Chongqing Medical University
- Chongqing 400016
- P. R. China
| | - Guojuan Liang
- School of Pharmaceutical Science
- Chongqing Medical University
- Chongqing 400016
- P. R. China
| | - Yiwu Wang
- Pharmaceutical Teaching Laboratory Centre
- Chongqing Medical University
- Chongqing 400016
- P. R. China
| | - Ping Deng
- School of Pharmaceutical Science
- Chongqing Medical University
- Chongqing 400016
- P. R. China
| | - Hui Zhou
- School of Pharmaceutical Science
- Chongqing Medical University
- Chongqing 400016
- P. R. China
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