1
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Hu WB, Song X, Wang MC. A new asymmetric activation strategy for hydrazones as acyl anion equivalents in the bimetallic catalyzed carbonyl-ene reaction. Org Biomol Chem 2021; 19:2055-2062. [PMID: 33599668 DOI: 10.1039/d1ob00017a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new asymmetric activation strategy for hydrazones as acyl anion equivalents is developed in the bimetallic catalyzed carbonyl-ene reaction of isatins and hydrazones. Under mild conditions, optically active functionalized 3-hydroxy-2-oxindoles were furnished in up to 98% yield with up to 97% enantioselectivity. In this process, formaldehyde tert-butylhydrazone which is seldom employed in asymmetric carbonyl-ene reactions accelerated by a metallic catalyst can be activated well by a Brønsted base. A possible catalytic cycle is proposed.
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Affiliation(s)
- Wen-Bo Hu
- The College of Chemistry and Molecular Engineering, Zhengzhou University, 75 Daxue Road, Zhengzhou, Henan 450052, P. R. China.
| | - Xixi Song
- The College of Chemistry and Molecular Engineering, Zhengzhou University, 75 Daxue Road, Zhengzhou, Henan 450052, P. R. China.
| | - Min-Can Wang
- The College of Chemistry and Molecular Engineering, Zhengzhou University, 75 Daxue Road, Zhengzhou, Henan 450052, P. R. China.
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2
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Bisogno FR, Fernández R, Lassaletta JM, de Gonzalo G. Room Temperature Ionic Liquids in Asymmetric Hetero-Ene Type Reactions: Improving Organocatalyst Performance at Lower Temperatures. Molecules 2021; 26:molecules26020355. [PMID: 33445529 PMCID: PMC7827838 DOI: 10.3390/molecules26020355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 12/30/2020] [Accepted: 01/08/2021] [Indexed: 11/25/2022] Open
Abstract
Room temperature ionic liquids (RTILs) have been widely used as (co)solvents in several catalytic processes modifying, in most of the cases, the catalyst activity and/or the selectivity for the studied reactions. However, there are just a few examples of their use in hydrogen bonding organocatalysis. In this paper, we show the positive effect of a set of imidazole-based ionic liquids ([bmim]BF4 and [hmim]PF6) in the enantioselective addition of formaldehyde tert-butylhydrazone to prochiral α-keto esters catalyzed by a sugar-based chiral thiourea. Reactions performed in the presence of low percentages of RTILs led to an increase of the catalyst activity, thereby making possible to work at lower temperatures. Thus, the chiral tert-butyl azomethyl tertiary alcohols could be obtained with moderate to good conversions and higher enantioselectivities for most of the studied substrates when using up to 30 vol% of [hmim]PF6 as a cosolvent in processes performed in toluene.
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Affiliation(s)
- Fabricio R. Bisogno
- Facultad de Ciencias Químicas, Instituto de Investigaciones en Físico-Química de Córdoba, Universidad Nacional de Córdoba, (INFIQC, CONICET-UNC), Haya de la Torre y Medina Allende, Ciudad Universitaria, Córdoba 5000, Argentina;
| | - Rosario Fernández
- Departamento de Química Orgánica, Universidad de Sevilla, c/Profesor García González 1, 41012 Sevilla, Spain;
| | - Jose María Lassaletta
- Instituto de Investigaciones Químicas (CSIC-US) and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Avda. Américo Vespucio 49, 41092 Sevilla, Spain;
| | - Gonzalo de Gonzalo
- Departamento de Química Orgánica, Universidad de Sevilla, c/Profesor García González 1, 41012 Sevilla, Spain;
- Correspondence: ; Tel.: +34-954-559997
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3
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Eder I, Haider V, Zebrowski P, Waser M. Recent Progress in the Asymmetric Syntheses of α‐Heterofunctionalized (Masked) α‐ and β‐Amino Acid Derivatives. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001077] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Isabella Eder
- Institute of Organic Chemistry Johannes Kepler University Linz Altenbergerstr. 69 4040 Linz Austria
| | - Victoria Haider
- Institute of Organic Chemistry Johannes Kepler University Linz Altenbergerstr. 69 4040 Linz Austria
| | - Paul Zebrowski
- Institute of Organic Chemistry Johannes Kepler University Linz Altenbergerstr. 69 4040 Linz Austria
| | - Mario Waser
- Institute of Organic Chemistry Johannes Kepler University Linz Altenbergerstr. 69 4040 Linz Austria
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4
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Matador E, de Gracia Retamosa M, Monge D, Fernández R, Lassaletta JM. Formaldehyde tert-butyl hydrazone as a formyl anion equivalent: asymmetric addition to carbonyl compounds. Chem Commun (Camb) 2020; 56:9256-9267. [PMID: 32626864 DOI: 10.1039/d0cc02660c] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The asymmetric 1,2-addition of formyl anion equivalents to carbonyl compounds is a powerful synthetic tool that ideally provide access to highly functionalizable α-hydroxy aldehydes in an enantioselective fashion. In this context, the nucleophilic character of formaldehyde hydrazones, together with their remarkable stability as monomeric species, has been exploited for the functionalization of diverse carbonyl compounds, using initially auxiliary-based methodologies and, more recently, catalytic enantioselective versions. This feature article highlights our research progress employing formaldehyde tert-butyl hydrazone as a versatile formyl anion equivalent, in combination with bifunctional H-bonding organocatalysis. The design and optimization of different catalytic systems, focusing on a dual activation of both reagents, is reviewed, as well as the racemization free unmasking of the formyl group and representative product transformations for the construction of valuable, densely functionalyzed chiral building blocks.
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Affiliation(s)
- Esteban Matador
- Departamento de Química Orgánica, Universidad de Sevilla and Centro de Innovación Avanzada (ORFEO-CINQA), C/Prof. García González, 1, 41012 Sevilla, Spain.
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5
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Meninno S. Valorization of Waste: Sustainable Organocatalysts from Renewable Resources. CHEMSUSCHEM 2020; 13:439-468. [PMID: 31634413 DOI: 10.1002/cssc.201902500] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Indexed: 06/10/2023]
Abstract
One of the greatest challenges facing our society is to reconcile our need to develop efficient and sophisticated chemical processes with the limited resources of our planet and its restricted ability to adsorb pollution. Organocatalysis has allowed many issues to be addressed in the development of sophisticated, but less polluting, processes. However, minimizing waste also means an efficient utilization of raw and renewable materials. Waste biomass represents an alternative to conventional petroleum-based chemical manufacturing and is a highly attractive renewable resource for the production of chemicals and high-value-added organocatalysts. Recent achievements in the use of renewable biomass feedstocks for the synthesis of organocatalysts are presented. Their application in synthetic methodologies, including multicomponent reactions, which are performed under solvent-free conditions or in eco-friendly reaction media, as well as recycling and reusing the organocatalysts, is illustrated. A few pioneering examples that demonstrate the potential of these promoters in asymmetric synthesis have also been documented. In particular, this review covers examples on the use of hetero- and homogeneous organocatalysts derived from 1) waste biopolymers, such as chitosan, alginic acid, and cellulose; ii) renewable platform molecules, such as levoglucosenone, isosorbide, mannose, d-glucosamine, and lecithin; 3) terpenes and rosin, such as pinane, isosteviol, and abietic acid; and iv) natural proteins (gelatin, bovine tendons, silk fibroin proteins).
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Affiliation(s)
- Sara Meninno
- Dipartimento di Chimica e Biologia, University of Salerno, Via Giovanni Paolo II, 84084, Fisciano, Italy
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6
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Matador E, de Gracia Retamosa M, Jiménez-Sánchez A, Monge D, Fernández R, Lassaletta JM. Asymmetric Organocatalytic Synthesis of Fluorinated β-Hydroxy Diazenes. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801477] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Esteban Matador
- Departamento de Química Orgánica; Universidad de Sevilla and Centro de Innovación en Química Avanzada (ORFEO-CINQA); C/ Prof. García González, 1 41012 Sevilla Spain
| | - María de Gracia Retamosa
- Instituto de Investigaciones Químicas (CSIC-US) and Centro de Innovación en Química Avanzada (ORFEO-CINQA); Avda. Américo Vespucio, 49 41092 Sevilla Spain
| | - Antonio Jiménez-Sánchez
- Departamento de Química Orgánica; Universidad de Sevilla and Centro de Innovación en Química Avanzada (ORFEO-CINQA); C/ Prof. García González, 1 41012 Sevilla Spain
| | - David Monge
- Departamento de Química Orgánica; Universidad de Sevilla and Centro de Innovación en Química Avanzada (ORFEO-CINQA); C/ Prof. García González, 1 41012 Sevilla Spain
| | - Rosario Fernández
- Departamento de Química Orgánica; Universidad de Sevilla and Centro de Innovación en Química Avanzada (ORFEO-CINQA); C/ Prof. García González, 1 41012 Sevilla Spain
| | - José M. Lassaletta
- Instituto de Investigaciones Químicas (CSIC-US) and Centro de Innovación en Química Avanzada (ORFEO-CINQA); Avda. Américo Vespucio, 49 41092 Sevilla Spain
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7
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Chen HX, Li Y, He X, Zhang Y, He W, Liang H, Zhang Y, Jiang X, Chen X, Cao R, Liu GF, Qiu L. Unexpected Brønsted Acid-Catalyzed Domino Reaction of 3-Hydroxyisoindolin-1-ones and N
-tert
-Butyl Hydrazones for the Synthesis of 3-(Hydrazono)isoindolin-1-ones. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801293] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Hui-Xuan Chen
- School of Chemistry; The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province; South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center; Guangdong Engineering Research Center of Chiral Drugs; Sun Yat-Sen University; Guangzhou People's Republic of China
| | - Yongsu Li
- School of Chemistry; The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province; South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center; Guangdong Engineering Research Center of Chiral Drugs; Sun Yat-Sen University; Guangzhou People's Republic of China
| | - Xuefeng He
- School of Chemistry; The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province; South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center; Guangdong Engineering Research Center of Chiral Drugs; Sun Yat-Sen University; Guangzhou People's Republic of China
| | - Yaqi Zhang
- School of Chemistry; The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province; South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center; Guangdong Engineering Research Center of Chiral Drugs; Sun Yat-Sen University; Guangzhou People's Republic of China
| | - Wenhuan He
- School of Chemistry; The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province; South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center; Guangdong Engineering Research Center of Chiral Drugs; Sun Yat-Sen University; Guangzhou People's Republic of China
| | - Hao Liang
- School of Chemistry; The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province; South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center; Guangdong Engineering Research Center of Chiral Drugs; Sun Yat-Sen University; Guangzhou People's Republic of China
| | - Yuyang Zhang
- School of Chemistry; The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province; South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center; Guangdong Engineering Research Center of Chiral Drugs; Sun Yat-Sen University; Guangzhou People's Republic of China
| | - Xiaoding Jiang
- School of Chemistry; The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province; South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center; Guangdong Engineering Research Center of Chiral Drugs; Sun Yat-Sen University; Guangzhou People's Republic of China
| | - Xiangmeng Chen
- School of Chemistry; The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province; South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center; Guangdong Engineering Research Center of Chiral Drugs; Sun Yat-Sen University; Guangzhou People's Republic of China
| | - Rihui Cao
- School of Chemistry; The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province; South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center; Guangdong Engineering Research Center of Chiral Drugs; Sun Yat-Sen University; Guangzhou People's Republic of China
| | - Gao-Feng Liu
- School of Chemistry; The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province; South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center; Guangdong Engineering Research Center of Chiral Drugs; Sun Yat-Sen University; Guangzhou People's Republic of China
| | - Liqin Qiu
- School of Chemistry; The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province; South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center; Guangdong Engineering Research Center of Chiral Drugs; Sun Yat-Sen University; Guangzhou People's Republic of China
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8
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Preparation of chitosan-supported urea materials and their application in some organocatalytic procedures. Carbohydr Polym 2018; 199:365-374. [DOI: 10.1016/j.carbpol.2018.07.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 07/03/2018] [Accepted: 07/03/2018] [Indexed: 01/20/2023]
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9
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Adam L, Schefzig L, Pecchioli T, Zimmer R, Reissig HU. New bifunctional carbohydrate-like thiourea derivatives – design and first application in organocatalysis. SYNTHETIC COMMUN 2018. [DOI: 10.1080/00397911.2018.1468465] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Lutz Adam
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustrasse 3, Berlin, Germany
| | - Luise Schefzig
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustrasse 3, Berlin, Germany
| | - Tommaso Pecchioli
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustrasse 3, Berlin, Germany
| | - Reinhold Zimmer
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustrasse 3, Berlin, Germany
| | - Hans-Ulrich Reissig
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustrasse 3, Berlin, Germany
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10
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Lipase Catalysed Kinetic Resolution of Racemic 1,2-Diols Containing a Chiral Quaternary Center. Molecules 2018; 23:molecules23071585. [PMID: 29966266 PMCID: PMC6100382 DOI: 10.3390/molecules23071585] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 06/26/2018] [Accepted: 06/27/2018] [Indexed: 11/16/2022] Open
Abstract
Optically active 1,2-diols are valuable buildings blocks in organic synthesis. In the present paper, a set of racemic 1,2-diols with an ester functional group are prepared, starting from α-ketoesters in a three-step procedure with moderate yields. The racemic 1,2-diols, containing a chiral quaternary center in their structure, are subjected to selective acylation in order to perform their kinetic resolution catalysed by a set of commercially available lipases. Under optimized reaction conditions, good conversions and enantioselectivities are achieved by using the lipase PSL-C from Pseudomonas cepacia in tert-butyl methyl ether. This biocatalyst could be reused up to five times without losing its properties.
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11
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Matador E, de Gracia Retamosa M, Monge D, Iglesias-Sigüenza J, Fernández R, Lassaletta JM. Bifunctional Squaramide Organocatalysts for the Asymmetric Addition of Formaldehyde tert-Butylhydrazone to Simple Aldehydes. Chemistry 2018; 24:6854-6860. [PMID: 29570872 DOI: 10.1002/chem.201801052] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Indexed: 01/08/2023]
Abstract
The nucleophilic addition of formaldehyde tert-butylhydrazone to simple aldehydes (a formal hetero-carbonyl-ene reaction) can be performed with good reactivity and excellent enantioselectivity by virtue of the dual hydrogen-bonding activation exerted by amide-squaramide organocatalysts. The resulting hydroxydiazenes (azo alcohols) were isolated in high yields as enantiomerically enriched azoxy compounds after a regioselective azo-to-azoxy transformation. Subsequent derivatization provides an entry to relevant amino alcohols, oxazolidinones, and derivatives thereof.
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Affiliation(s)
- Esteban Matador
- Departamento de Química Orgánica, Universidad de Sevilla and Centro de Innovación Avanzada (ORFEO-CINQA), C/ Prof. García González, 1, 41012, Seville, Spain
| | - María de Gracia Retamosa
- Instituto de Investigaciones Químicas (CSIC-US) and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Avda. Américo Vespucio, 49, 41092, Seville, Spain)
| | - David Monge
- Departamento de Química Orgánica, Universidad de Sevilla and Centro de Innovación Avanzada (ORFEO-CINQA), C/ Prof. García González, 1, 41012, Seville, Spain
| | - Javier Iglesias-Sigüenza
- Departamento de Química Orgánica, Universidad de Sevilla and Centro de Innovación Avanzada (ORFEO-CINQA), C/ Prof. García González, 1, 41012, Seville, Spain
| | - Rosario Fernández
- Departamento de Química Orgánica, Universidad de Sevilla and Centro de Innovación Avanzada (ORFEO-CINQA), C/ Prof. García González, 1, 41012, Seville, Spain
| | - José M Lassaletta
- Instituto de Investigaciones Químicas (CSIC-US) and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Avda. Américo Vespucio, 49, 41092, Seville, Spain)
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