1
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Zhao Y, Li S, Fan Y, Cao J, Dong X, Wang R, Tian L. C sp3-H Imination Using Arylazo Sulfone as a N Source: An Approach to Access Imines. Org Lett 2023; 25:5911-5915. [PMID: 37530586 DOI: 10.1021/acs.orglett.3c02283] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/03/2023]
Abstract
An unprecedented Csp3-H imination reaction using arylazo sulfones as the readily accessible and stable N source is reported. The synthetic virtues are demonstrated through mild conditions, simple operation, good air compatibility, and functional group tolerance, as well as suitability for gram-scale reaction. The resulting imines can be further converted to α-amino acids. The presented results shed light on an unusual usage of arylazo sulfones and will inspire novel experimental design by using arylazo sulfones as the N source.
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Affiliation(s)
- Yulei Zhao
- Key Laboratory of Life-Organic Analysis of Shandong Province, Key Laboratory of Green Natural Products and Pharmaceutical Intermediates in Universities of Shandong Province, Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu City, Shandong Province 273165, P. R. China
| | - Shuai Li
- Key Laboratory of Life-Organic Analysis of Shandong Province, Key Laboratory of Green Natural Products and Pharmaceutical Intermediates in Universities of Shandong Province, Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu City, Shandong Province 273165, P. R. China
| | - Yuhang Fan
- Key Laboratory of Life-Organic Analysis of Shandong Province, Key Laboratory of Green Natural Products and Pharmaceutical Intermediates in Universities of Shandong Province, Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu City, Shandong Province 273165, P. R. China
| | - Jun Cao
- Key Laboratory of Life-Organic Analysis of Shandong Province, Key Laboratory of Green Natural Products and Pharmaceutical Intermediates in Universities of Shandong Province, Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu City, Shandong Province 273165, P. R. China
| | - Xiaotong Dong
- Key Laboratory of Life-Organic Analysis of Shandong Province, Key Laboratory of Green Natural Products and Pharmaceutical Intermediates in Universities of Shandong Province, Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu City, Shandong Province 273165, P. R. China
| | - Ruiqing Wang
- Key Laboratory of Life-Organic Analysis of Shandong Province, Key Laboratory of Green Natural Products and Pharmaceutical Intermediates in Universities of Shandong Province, Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu City, Shandong Province 273165, P. R. China
| | - Laijin Tian
- Key Laboratory of Life-Organic Analysis of Shandong Province, Key Laboratory of Green Natural Products and Pharmaceutical Intermediates in Universities of Shandong Province, Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu City, Shandong Province 273165, P. R. China
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2
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Tong M, Bai X, Meng X, Wang J, Wang T, Zhu X, Mao B. Enantioselective synthesis of α-amino esters through Petasis borono-Mannich multicomponent reaction of potassium trifluoroborate salts. JOURNAL OF CHEMICAL RESEARCH 2019. [DOI: 10.1177/1747519819876822] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Enantioselective synthesis of α-amino esters have been achieved through the Petasis borono-Mannich multicomponent reaction using ( R)-BINOL-derived catalysts with stable heteroaryl and alkenyl trifluoroborate salts under mild conditions. The reaction provides direct access to optically active α-amino esters with moderate to good yields and enantioselectivities.
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Affiliation(s)
- Mengnan Tong
- Key Laboratory of Pharmaceutical Engineering of Ministry of Education, College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, P.R. China
| | - Xiang Bai
- Key Laboratory of Pharmaceutical Engineering of Ministry of Education, College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, P.R. China
| | - Xin Meng
- Key Laboratory of Pharmaceutical Engineering of Ministry of Education, College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, P.R. China
| | - Jianfei Wang
- Key Laboratory of Pharmaceutical Engineering of Ministry of Education, College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, P.R. China
| | - Tao Wang
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, P.R. China
| | - Xingyi Zhu
- Key Laboratory of Pharmaceutical Engineering of Ministry of Education, College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, P.R. China
| | - Bin Mao
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, P.R. China
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3
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Volpe C, Meninno S, Mirra G, Overgaard J, Capobianco A, Lattanzi A. Direct α-Imination of N-Acyl Pyrazoles with Nitrosoarenes. Org Lett 2019; 21:5305-5309. [PMID: 31247764 DOI: 10.1021/acs.orglett.9b01913] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Unprecedented α-imino N-acyl pyrazoles were efficiently and selectively prepared through the 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD)-catalyzed reaction of nitrosoarenes with N-acyl pyrazoles via an N-nitroso aldol reaction/dehydration sequence. The α-imino acyl pyrazoles were demonstrated to be new versatile intermediates for practical one-pot syntheses of α-imino amides, dipeptide precursors, esters, and β-amino alcohols. The synthetic method competes with known protocols in terms of ready availability of the reagents and catalyst, mild and catalytic reaction conditions, gram-scale applicability, and scope of the α-imino acid derivatives achievable.
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Affiliation(s)
- Chiara Volpe
- Dipartimento di Chimica e Biologia , Università di Salerno , Via Giovanni Paolo II 132 , 84084 Fisciano , Italy
| | - Sara Meninno
- Dipartimento di Chimica e Biologia , Università di Salerno , Via Giovanni Paolo II 132 , 84084 Fisciano , Italy
| | - Giulia Mirra
- Dipartimento di Chimica e Biologia , Università di Salerno , Via Giovanni Paolo II 132 , 84084 Fisciano , Italy
| | - Jacob Overgaard
- Department of Chemistry , Aarhus University , Langelandsgade 140 , 8000 Aarhus , Denmark
| | - Amedeo Capobianco
- Dipartimento di Chimica e Biologia , Università di Salerno , Via Giovanni Paolo II 132 , 84084 Fisciano , Italy
| | - Alessandra Lattanzi
- Dipartimento di Chimica e Biologia , Università di Salerno , Via Giovanni Paolo II 132 , 84084 Fisciano , Italy
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4
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Espinosa M, Blay G, Cardona L, Merino P, Pedro JR. Asymmetric diastereodivergent Michael addition of 2-chloromalonate esters to conjugated imines enabled by catalyst metal change. Org Chem Front 2019. [DOI: 10.1039/c9qo00741e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A change of the metal ion in pyBOX complex catalysts enables the asymetric diastereodivergent conjugate addition of 2-chloromalonate esters to β,γ-unsaturated α-ketiminoesters.
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Affiliation(s)
- Miguel Espinosa
- Departament de Química Orgànica
- Facultat de Química
- Universitat de València
- 46100-Burjassot
- Spain
| | - Gonzalo Blay
- Departament de Química Orgànica
- Facultat de Química
- Universitat de València
- 46100-Burjassot
- Spain
| | - Luz Cardona
- Departament de Química Orgànica
- Facultat de Química
- Universitat de València
- 46100-Burjassot
- Spain
| | - Pedro Merino
- Instituto de Biocomputación y Física de Sistemas Complejos (BIFI)
- Universidad de Zaragoza
- 50009-Zaragoza
- Spain
| | - José R. Pedro
- Departament de Química Orgànica
- Facultat de Química
- Universitat de València
- 46100-Burjassot
- Spain
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5
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Espinosa M, Blay G, Cardona L, Fernández I, Muñoz MC, Pedro JR. Lanthanum-pyBOX complexes as catalysts for the enantioselective conjugate addition of malonate esters to β,γ-unsaturated α-ketimino esters. J COORD CHEM 2018. [DOI: 10.1080/00958972.2018.1437422] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Miguel Espinosa
- Facultat de Química, Department de Química Orgànica, Universitat de València, Burjassot, Spain
| | - Gonzalo Blay
- Facultat de Química, Department de Química Orgànica, Universitat de València, Burjassot, Spain
| | - Luz Cardona
- Facultat de Química, Department de Química Orgànica, Universitat de València, Burjassot, Spain
| | - Isabel Fernández
- Facultat de Química, Department de Química Orgànica, Universitat de València, Burjassot, Spain
| | - M. Carmen Muñoz
- Departament de Física Aplicada, Universitat Politècnica de València, València, Spain
| | - Jose R. Pedro
- Facultat de Química, Department de Química Orgànica, Universitat de València, Burjassot, Spain
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6
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Espinosa M, Blay G, Cardona L, Muñoz MC, Pedro JR. Catalytic Asymmetric Formal [3+2] Cycloaddition of 2-Isocyanatomalonate Esters and Unsaturated Imines: Synthesis of Highly Substituted Chiral γ-Lactams. Chemistry 2017; 23:14707-14711. [PMID: 28845883 DOI: 10.1002/chem.201702777] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Indexed: 11/08/2022]
Abstract
Unlike their isocyano and isothiocyanato analogues, isocyanato esters remain almost unexplored as formal 1,3-dipoles in asymmetric catalytic reactions. The first asymmetric formal [3+2] cycloaddition involving isocyanato esters and electrophilic alkenes is reported. Diisopropyl 2-isocyanatomalonate reacts with α,β-unsaturated N-(o-anisidyl) imines in the presence of a Mg(OTf)2 -BOX complex to give highly substituted chiral pyrrolidinones featuring a conjugate exocyclic double bond with excellent yields and enantiomeric excesses up to 99 %. Several transformations of the resulting heterocycles, including the synthesis of a pyroglutamic acid derivative, have been carried out.
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Affiliation(s)
- Miguel Espinosa
- Departament de Química Orgànica, Facultat de Química, Universitat de València, C/ Dr. Moliner 50, 46100, Burjassot, Spain
| | - Gonzalo Blay
- Departament de Química Orgànica, Facultat de Química, Universitat de València, C/ Dr. Moliner 50, 46100, Burjassot, Spain
| | - Luz Cardona
- Departament de Química Orgànica, Facultat de Química, Universitat de València, C/ Dr. Moliner 50, 46100, Burjassot, Spain
| | - M Carmen Muñoz
- Departament de Física Aplicada, Universitat Politècnica de València, Camí de Vera, S/N, 46071, València, Spain
| | - José R Pedro
- Departament de Química Orgànica, Facultat de Química, Universitat de València, C/ Dr. Moliner 50, 46100, Burjassot, Spain
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7
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Affiliation(s)
| | - Maryam Zirak
- Department
of Chemistry, Payame Noor University, Tehran 19395-3697, Iran
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8
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Espinosa M, Herrera J, Blay G, Cardona L, Muñoz MC, Pedro JR. Copper-catalysed enantioselective Michael addition of malonic esters to β-trifluoromethyl-α,β-unsaturated imines. Org Biomol Chem 2017; 15:3849-3853. [DOI: 10.1039/c7ob00595d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A diastereo- and enantioselective Michael addition of methyl malonate to β-trifluoromethyl unsaturated imines is presented.
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Affiliation(s)
- Miguel Espinosa
- Departament de Química Orgànica
- Facultat de Química
- Universitat de València
- 46100-Burjassot
- Spain
| | - Jorge Herrera
- Departament de Química Orgànica
- Facultat de Química
- Universitat de València
- 46100-Burjassot
- Spain
| | - Gonzalo Blay
- Departament de Química Orgànica
- Facultat de Química
- Universitat de València
- 46100-Burjassot
- Spain
| | - Luz Cardona
- Departament de Química Orgànica
- Facultat de Química
- Universitat de València
- 46100-Burjassot
- Spain
| | - M. Carmen Muñoz
- Departament de Física Aplicada
- Universitat Politècnica de València
- E-46071 València
- Spain
| | - José R. Pedro
- Departament de Química Orgànica
- Facultat de Química
- Universitat de València
- 46100-Burjassot
- Spain
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