1
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Koochakkhani S, Branco DSN, Alonso AV, Murugesan A, Sarkar P, Caires CJN, Devanesan S, AlSalhi MS, Candeias NR, Kandhavelu M. Novel tetrahydroquinoline derivatives induce ROS-mediated apoptosis in glioblastoma cells. Eur J Pharm Sci 2024; 200:106842. [PMID: 38936514 DOI: 10.1016/j.ejps.2024.106842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Revised: 05/29/2024] [Accepted: 06/21/2024] [Indexed: 06/29/2024]
Abstract
Current treatment for Glioblastoma Multiforme (GBM) is not efficient due to its aggressive nature, tendency to infiltrate surrounding brain tissue, and chemotherapy resistance. Tetrahydroquinoline scaffolds are emerging as a new class of drug for treating many human cancers including GBM. This study investigates the cytotoxicity effect of eight novel derivatives of 2-((3,4-dihydroquinolin-1(2H)-yl)(aryl)methyl)phenol, containing substitute 1 with reduced dihydroquinoline fused with cyclohexene ring and substitute 2 with phenyl and methyl group. The 4-position of the aryl ring was determinant for the desired cytotoxicity, and out of the 8 synthesized compounds, the 4-trifluoromethyl substituted derivative (4ag) exhibited the most anti-GBM potential effect compared to the standard chemotherapeutic agent, temozolomide (TMZ), with IC50 values of 38.3 μM and 40.6 μM in SNB19 and LN229 cell lines, respectively. Our results demonstrated that 4ag triggers apoptosis through the activation of Caspase-3/7. In addition, 4ag induced intracellular reactive oxygen species (iROS) which in turn elevated mitochondrial ROS (mtROS) and causes the disruption of the mitochondrial membrane potential (Δψmt) in both GBM cells. This compound also exhibited anti-migratory properties over the time in both the cell lines. Overall, these findings suggest that tetrahydroquinoline derivative, 4ag could lead to the development of a new drug for treating GBM.
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Affiliation(s)
- Shabnaz Koochakkhani
- Molecular Signaling Group, Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland; BioMeditech and Tays Cancer Center, Tampere University, Hospital, P.O. Box 553, 33101 Tampere, Finland
| | - Daniela S N Branco
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Anxo Vila Alonso
- Molecular Signaling Group, Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Akshaya Murugesan
- Molecular Signaling Group, Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland; BioMeditech and Tays Cancer Center, Tampere University, Hospital, P.O. Box 553, 33101 Tampere, Finland; Department of Biotechnology, Lady Doak College, Thallakulam, Madurai, India
| | - Puja Sarkar
- Molecular Signaling Group, Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Carina J N Caires
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Sandhanasamy Devanesan
- Department of Physics and Astronomy, College of Science, King Saud University, P. O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Mohamad S AlSalhi
- Department of Physics and Astronomy, College of Science, King Saud University, P. O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Nuno R Candeias
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal; Faculty of Engineering and Natural Sciences, Tampere University, Korkeakoulunkatu 8, 33101 Tampere, Finland.
| | - Meenakshisundaram Kandhavelu
- Molecular Signaling Group, Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland; BioMeditech and Tays Cancer Center, Tampere University, Hospital, P.O. Box 553, 33101 Tampere, Finland.
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2
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Ly D, Nguyen TT, Tran CTH, Nguyen VPT, Nguyen KX, Pham PH, Le NTH, Nguyen TT, Phan NTS. Metal-Free Annulation of 2-Nitrobenzyl Alcohols and Tetrahydroisoquinolines toward the Divergent Synthesis of Quinazolinones and Quinazolinethiones. J Org Chem 2021; 87:103-113. [PMID: 34918926 DOI: 10.1021/acs.joc.1c02017] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A simple metal-free method for the synthesis of quinazolinones from commercially available 2-nitrobenzyl alcohols and tetrahydroisoquinolines is developed. The reaction conditions were tolerant of an array of functionalities such as halogen, tertiary amine, protected alcohol, and ester groups. Under nearly identical conditions, quinazolinethiones were obtained in the presence of elemental sulfur and suitable mediators.
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Affiliation(s)
- Duc Ly
- Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City 700000, Vietnam.,Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc District, Ho Chi Minh City 700000, Vietnam
| | - Thao T Nguyen
- Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City 700000, Vietnam.,Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc District, Ho Chi Minh City 700000, Vietnam
| | - Cam T H Tran
- Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City 700000, Vietnam.,Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc District, Ho Chi Minh City 700000, Vietnam
| | - Vy P T Nguyen
- Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City 700000, Vietnam.,Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc District, Ho Chi Minh City 700000, Vietnam
| | - Khang X Nguyen
- Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City 700000, Vietnam.,Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc District, Ho Chi Minh City 700000, Vietnam
| | - Phuc H Pham
- Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City 700000, Vietnam.,Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc District, Ho Chi Minh City 700000, Vietnam
| | - Nhan T H Le
- Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City 700000, Vietnam.,Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc District, Ho Chi Minh City 700000, Vietnam
| | - Tung T Nguyen
- Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City 700000, Vietnam.,Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc District, Ho Chi Minh City 700000, Vietnam
| | - Nam T S Phan
- Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City 700000, Vietnam.,Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc District, Ho Chi Minh City 700000, Vietnam
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3
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Seidel D, Chen W. Condensation-Based Methods for the C–H Bond Functionalization of Amines. SYNTHESIS-STUTTGART 2021; 53:3869-3908. [DOI: 10.1055/a-1631-2140] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
AbstractThis review aims to provide a comprehensive overview of condensation-based methods for the C–H bond functionalization of amines that feature azomethine ylides as key intermediates. These transformations are typically redox-neutral and share common attributes with classic name reactions such as the Strecker, Mannich, Friedel–Crafts, Pictet–Spengler, and Kabachnik–Fields reactions, while incorporating a redox-isomerization step. This approach provides an ideal platform to rapidly transform simple starting materials into complex amines.1 Introduction1.1 General Remarks1.2 Overview1.3 Scope of This Review2 Aromatization of Cyclic Amines2.1 Pyridines from Piperidine2.2 Isoquinolines from Tetrahydroisoquinolines and Quinolines from Tetrahydroquinolines2.3 Pyrroles from 3-Pyrroline or Pyrrolidine2.4 Indoles from Indolines3 Pericyclic Reactions3.1 (3+2)-Dipolar Cycloadditions3.2 6π-Electrocyclizations3.3 1,5-Proton Shifts4 Redox-Variants of Classic Transformations Incorporating a C–H Bond Functionalization Step4.1 α-Cyanation4.2 α-Alkynylation4.3 α-Phosphonation4.4 α-Arylation4.5 α-Alkylation with Ketones4.6 Redox-Ugi Reaction4.7 Miscellaneous Intermolecular Reactions5 Redox-Annulations6 Reactions Involving β-C–H Bond Functionalization7 Outlook
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Affiliation(s)
- Daniel Seidel
- Center for Heterocyclic Compounds, Department of Chemistry, University of Florida
| | - Weijie Chen
- Center for Heterocyclic Compounds, Department of Chemistry, University of Florida
- School of Chemical Science and Engineering, Institute for Advanced Study, Tongji University
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4
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Wang Z, Zeng H, Li CJ. Dearomatization–Rearomatization Strategy for Reductive Cross-Coupling of Indoles with Ketones in Water. Org Lett 2019; 21:2302-2306. [PMID: 30908058 DOI: 10.1021/acs.orglett.9b00591] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zemin Wang
- The State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Road, Lanzhou 730000, People’s Republic of China
| | - Huiying Zeng
- The State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Road, Lanzhou 730000, People’s Republic of China
| | - Chao-Jun Li
- Department of Chemistry and FQRNT Centre for Green Chemistry and Catalysis, McGill University, 801 Sherbrooke Street West, Montreal, Quebec H3A 0B8, Canada
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5
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Mori K, Umehara N, Akiyama T. Highly diastereoselective synthesis of tricyclic fused-pyrans by sequential hydride shift mediated double C(sp 3)-H bond functionalization. Chem Sci 2018; 9:7327-7331. [PMID: 30542535 PMCID: PMC6237131 DOI: 10.1039/c8sc02103a] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Accepted: 06/23/2018] [Indexed: 11/23/2022] Open
Abstract
Described herein is the Brønsted acid-catalyzed double C(sp3)-H bond functionalization of alkyl phenethyl ether derivatives. In this process, a [1,5]-[1,5]-hydride shift occurred successively to afford tricyclic fused pyran derivatives in excellent chemical yields with excellent diastereoselectivities (up to >20 : 1). The key to achieve this reaction was the introduction of two methyl groups at the benzylic position, which was effective in both hydride shift processes: (1) the Thorpe-Ingold effect for the first hydride shift and (2) conformational control in the second hydride shift.
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Affiliation(s)
- Keiji Mori
- Department of Chemistry , Faculty of Science , Gakushuin University , 1-5-1 Mejiro, Toshima-ku , Tokyo 171-8588 , Japan . ; ; Tel: +81-3-3986-0221
- Department of Applied Chemistry , Graduate School of Engineering , Tokyo University of Agriculture and Technology , 2-24-16 Nakacho, Koganei , Tokyo 184-8588 , Japan
| | - Nobuaki Umehara
- Department of Chemistry , Faculty of Science , Gakushuin University , 1-5-1 Mejiro, Toshima-ku , Tokyo 171-8588 , Japan . ; ; Tel: +81-3-3986-0221
| | - Takahiko Akiyama
- Department of Chemistry , Faculty of Science , Gakushuin University , 1-5-1 Mejiro, Toshima-ku , Tokyo 171-8588 , Japan . ; ; Tel: +81-3-3986-0221
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6
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Mori K, Isogai R, Kamei Y, Yamanaka M, Akiyama T. Chiral Magnesium Bisphosphate-Catalyzed Asymmetric Double C(sp3)–H Bond Functionalization Based on Sequential Hydride Shift/Cyclization Process. J Am Chem Soc 2018; 140:6203-6207. [DOI: 10.1021/jacs.8b02761] [Citation(s) in RCA: 87] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Keiji Mori
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Ryo Isogai
- Department of Chemistry, Faculty of Science, Gakushuin University, Mejiro, Toshima-ku, Tokyo 171-8588, Japan
| | - Yuto Kamei
- Department of Chemistry and Research Center for Smart Molecules, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Masahiro Yamanaka
- Department of Chemistry and Research Center for Smart Molecules, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Takahiko Akiyama
- Department of Chemistry, Faculty of Science, Gakushuin University, Mejiro, Toshima-ku, Tokyo 171-8588, Japan
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7
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Chen C, Xu L, Wang L, Li SS. Efficient construction of tetrahydroquinolines via fluorinated alcohol mediated cascade [1,5]-hydride transfer/cyclization. Org Biomol Chem 2018; 16:7109-7114. [DOI: 10.1039/c8ob02012d] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
An environmentally benign cascade redox-neutral process was developed for the efficient construction of pharmaceutically important spirocyclic tetrahydroquinolines via a 3-step cascade Knoevenagel condensation/[1,5]-hydride transfer/cyclization.
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Affiliation(s)
- Chunqi Chen
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao 266109
- China
| | - Lubin Xu
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao 266109
- China
| | - Liang Wang
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao 266109
- China
| | - Shuai-Shuai Li
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao 266109
- China
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8
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Qiu Z, Li JS, Li CJ. Formal aromaticity transfer for palladium-catalyzed coupling between phenols and pyrrolidines/indolines. Chem Sci 2017; 8:6954-6958. [PMID: 29147521 PMCID: PMC5642148 DOI: 10.1039/c7sc02578e] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 08/09/2017] [Indexed: 12/15/2022] Open
Abstract
We herein describe a palladium-catalyzed formal aromaticity transfer coupling reaction between phenols and pyrrolidines or indolines to generate the corresponding N-cyclohexyl pyrroles or indoles. In this transformation, the aromaticity of phenols is formally passed on to the pyrrolidine or indoline units. Substituted phenols thus can serve as latent cyclohexyl equivalents for the fast construction of various N-cyclohexyl pyrroles and indoles.
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Affiliation(s)
- Zihang Qiu
- Department of Chemistry , FQRNT Centre for Green Chemistry and Catalysis , McGill University , 801 Sherbrooke St. W. , Montreal , Quebec H3A 0B8 , Canada .
| | - Jiang-Sheng Li
- Department of Chemistry , FQRNT Centre for Green Chemistry and Catalysis , McGill University , 801 Sherbrooke St. W. , Montreal , Quebec H3A 0B8 , Canada .
- School of Chemistry and Biological Engineering , Changsha University of Science & Technology , Changsha 410114 , China
| | - Chao-Jun Li
- Department of Chemistry , FQRNT Centre for Green Chemistry and Catalysis , McGill University , 801 Sherbrooke St. W. , Montreal , Quebec H3A 0B8 , Canada .
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9
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Yoshida T, Mori K. Hf(OTf)4-Catalyzed highly diastereoselective synthesis of 1,3-disubstituted tetralin derivatives via benzylic C(sp3)–H bond functionalization. Chem Commun (Camb) 2017; 53:4319-4322. [DOI: 10.1039/c7cc01717k] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly diastereoselective synthesis of 1,3-disubstituted tetralin derivatives was achieved via Hf(OTf)4-catalyzed benzylic C(sp3)–H bond functionalization.
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Affiliation(s)
- Taira Yoshida
- Department of Applied Chemistry
- Graduate School of Engineering
- Tokyo University of Agriculture and Technology
- Tokyo 184-8588
- Japan
| | - Keiji Mori
- Department of Applied Chemistry
- Graduate School of Engineering
- Tokyo University of Agriculture and Technology
- Tokyo 184-8588
- Japan
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10
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Ma L, Paul A, Breugst M, Seidel D. Redox-Neutral Aromatization of Cyclic Amines: Mechanistic Insights and Harnessing of Reactive Intermediates for Amine α- and β-C-H Functionalization. Chemistry 2016; 22:18179-18189. [PMID: 27712000 DOI: 10.1002/chem.201603839] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Indexed: 01/14/2023]
Abstract
Cyclic amines such as pyrrolidine and piperidine are known to undergo condensations with aldehydes to furnish pyrrole and pyridine derivatives, respectively. A combined experimental and computational study provides detailed insights into the mechanism of pyrrole formation. A number of reactive intermediates (e.g., azomethine ylides, conjugated azomethine ylides, enamines) were intercepted, outlining strategies for circumventing aromatization as a valuable pathway for amine C-H functionalization.
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Affiliation(s)
- Longle Ma
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA
| | - Anirudra Paul
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA
| | - Martin Breugst
- Department für Chemie, Universität zu Köln, Greinstraße 4, 50939, Köln, Germany
| | - Daniel Seidel
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA
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11
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Neto Í, Andrade J, Fernandes AS, Pinto Reis C, Salunke JK, Priimagi A, Candeias NR, Rijo P. Multicomponent Petasis-borono Mannich Preparation of Alkylaminophenols and Antimicrobial Activity Studies. ChemMedChem 2016; 11:2015-23. [DOI: 10.1002/cmdc.201600244] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Revised: 06/30/2016] [Indexed: 01/22/2023]
Affiliation(s)
- Íris Neto
- Center for Research in Biosciences & Health Technologies (CBIOS); Universidade Lusófona de Humanidades e Tecnologias; 1749-024 Lisboa Portugal
| | - Joana Andrade
- Center for Research in Biosciences & Health Technologies (CBIOS); Universidade Lusófona de Humanidades e Tecnologias; 1749-024 Lisboa Portugal
| | - A. S. Fernandes
- Center for Research in Biosciences & Health Technologies (CBIOS); Universidade Lusófona de Humanidades e Tecnologias; 1749-024 Lisboa Portugal
| | - Catarina Pinto Reis
- Center for Research in Biosciences & Health Technologies (CBIOS); Universidade Lusófona de Humanidades e Tecnologias; 1749-024 Lisboa Portugal
| | - Jagadish K. Salunke
- Department of Chemistry and Bioengineering; Tampere University of Technology; Korkeakoulunkatu 8 33101 Tampere Finland
| | - Arri Priimagi
- Department of Chemistry and Bioengineering; Tampere University of Technology; Korkeakoulunkatu 8 33101 Tampere Finland
| | - Nuno R. Candeias
- Department of Chemistry and Bioengineering; Tampere University of Technology; Korkeakoulunkatu 8 33101 Tampere Finland
| | - Patrícia Rijo
- Center for Research in Biosciences & Health Technologies (CBIOS); Universidade Lusófona de Humanidades e Tecnologias; 1749-024 Lisboa Portugal
- Instituto de Investigação do Medicamento (iMed.ULisboa); Faculdade de Farmácia; Universidade de Lisboa; 1649-003 Lisboa Portugal
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12
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Classical-Reaction-Driven Stereo- and Regioselective C(sp3)-H Functionalization of Aliphatic Amines. CHEM REC 2016; 16:1477-88. [DOI: 10.1002/tcr.201600001] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Indexed: 01/08/2023]
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13
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Kang Y, Richers MT, Sawicki CH, Seidel D. C-H functionalization of cyclic amines: redox-annulations with α,β-unsaturated carbonyl compounds. Chem Commun (Camb) 2016; 51:10648-51. [PMID: 26051897 DOI: 10.1039/c5cc03390j] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Cyclic amines such as pyrrolidine and 1,2,3,4-tetrahydroisoquinoline undergo redox-annulations with α,β-unsaturated aldehydes and ketones. Carboxylic acid promoted generation of a conjugated azomethine ylide is followed by 6π-electrocylization, and, in some cases, tautomerization. The resulting ring-fused pyrrolines are readily oxidized to the corresponding pyrroles or reduced to pyrrolidines.
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Affiliation(s)
- YoungKu Kang
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, USA.
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14
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Saito K, Akiyama T. Chiral Phosphoric Acid Catalyzed Kinetic Resolution of Indolines Based on a Self-Redox Reaction. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201510692] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Kodai Saito
- Department of Chemistry; Gakushuin University; 1-5-1 Mejiro, Toshima-ku Tokyo 171-8588 Japan
- Department of Chemistry; Keio University, Hiyoshi, Kohoku-ku; Yokohama Kanagawa 223-8522 Japan
| | - Takahiko Akiyama
- Department of Chemistry; Gakushuin University; 1-5-1 Mejiro, Toshima-ku Tokyo 171-8588 Japan
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15
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Saito K, Akiyama T. Chiral Phosphoric Acid Catalyzed Kinetic Resolution of Indolines Based on a Self-Redox Reaction. Angew Chem Int Ed Engl 2016; 55:3148-52. [PMID: 26822188 DOI: 10.1002/anie.201510692] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Indexed: 11/12/2022]
Abstract
A strategy for oxidative kinetic resolution of racemic indolines was developed, employing salicylaldehyde derivative as the pre-resolving reagent and chiral phosphoric acid as the catalyst. The iminium intermediate, formed by the condensation reaction of an enantiomer of indoline with salicylaldehyde derivative, was hydrogenated by the same enantiomer of indoline to afford another enantiomer of indoline by a self-redox mechanism. The oxidative kinetic resolution of 2-aryl-substituted indolines proceeded to give enantiomers in good yields with excellent enantioselectivities.
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Affiliation(s)
- Kodai Saito
- Department of Chemistry, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo, 171-8588, Japan.,Department of Chemistry, Keio University, Hiyoshi, Kohoku-ku, Yokohama, Kanagawa, 223-8522, Japan
| | - Takahiko Akiyama
- Department of Chemistry, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo, 171-8588, Japan.
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16
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Kilic H, Aydin O, Bayindir S, Saracoglu N. Condensation of Indoline with Some 1,2- and 1,3-Diketones. J Heterocycl Chem 2015. [DOI: 10.1002/jhet.2580] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Haydar Kilic
- Department of Chemistry, Faculty of Sciences; Atatürk University; Erzurum 25240 Turkey
| | - Omer Aydin
- Department of Chemistry, Faculty of Sciences; Atatürk University; Erzurum 25240 Turkey
| | - Sinan Bayindir
- Department of Chemistry, Faculty of Sciences; Atatürk University; Erzurum 25240 Turkey
- Department of Chemistry, Faculty of Sciences and Arts; Bingöl University; Bingöl 12000 Turkey
| | - Nurullah Saracoglu
- Department of Chemistry, Faculty of Sciences; Atatürk University; Erzurum 25240 Turkey
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17
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Aydin O, Kilic H, Bayindir S, Erdogan E, Saracoglu N. Redox Amination Scope of Benzylic Ketones with Indoline: Synthetic and Mechanistic Insights. J Heterocycl Chem 2015. [DOI: 10.1002/jhet.2457] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Omer Aydin
- Department of Chemistry, Faculty of Sciences; Atatürk University; Erzurum 25240 Turkey
| | - Haydar Kilic
- Department of Chemistry, Faculty of Sciences; Atatürk University; Erzurum 25240 Turkey
| | - Sinan Bayindir
- Department of Chemistry, Faculty of Sciences; Atatürk University; Erzurum 25240 Turkey
- Department of Chemistry, Faculty of Arts and Sciences; Bingöl University; Bingöl 12000 Turkey
| | - Esra Erdogan
- Department of Chemistry, Faculty of Sciences; Atatürk University; Erzurum 25240 Turkey
| | - Nurullah Saracoglu
- Department of Chemistry, Faculty of Sciences; Atatürk University; Erzurum 25240 Turkey
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18
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Affiliation(s)
- Takahiko Akiyama
- Department
of Chemistry, Faculty of Science, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588, Japan
| | - Keiji Mori
- Department
of Chemistry, Faculty of Science, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588, Japan
- Department
of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho Koganei, Tokyo 184-8588, Japan
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19
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Platonova AY, Seidel D. The Rügheimer-Burrows reaction revisited: Facile preparation of 4-alkylisoquinolines and 3,5-dialkylpyridines from (partially) saturated amines. Tetrahedron Lett 2015. [PMID: 26207074 DOI: 10.1016/j.tetlet.2014.11.137] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
A long-known class of cyclic amine/aldehyde condensation reactions was reinvestigated. Benzoic acid was found to efficiently promote condensations of amines such as piperidine or 1,2,3,4-tetrahydroisoquinoline with aromatic aldehydes, resulting in amine β-functionalization and aromatization. These redox-neutral transformations provide 3,5-dialkylpyridines and 4-alkylisoquinolines in moderate to good yields, following short reaction times under microwave conditions.
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Affiliation(s)
- Alena Yu Platonova
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, United States ; Department of Organic Synthesis Technology, Ural Federal University, Yekaterinburg, 620002, Russia
| | - Daniel Seidel
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, United States
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20
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Wang J, Shen Q, Zhang J, Song G. Catalyst-free synthesis of N-β-hydroxyethyl pyrroles and indoles via a domino [3+2] cycloaddition and ring-opening aromatization process. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.04.074] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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21
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Seidel D. The azomethine ylide route to amine C-H functionalization: redox-versions of classic reactions and a pathway to new transformations. Acc Chem Res 2015; 48:317-28. [PMID: 25560649 PMCID: PMC4334269 DOI: 10.1021/ar5003768] [Citation(s) in RCA: 188] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
![]()
Redox-neutral
methods for the functionalization of amine α-C–H
bonds are inherently efficient because they avoid external oxidants
and reductants and often do not generate unwanted byproducts. However,
most of the current methods for amine α-C–H bond functionalization
are oxidative in nature. While the most efficient variants utilize
atmospheric oxygen as the terminal oxidant, many such transformations
require the use of expensive or toxic oxidants, often coupled with
the need for transition metal catalysts. Redox-neutral amine
α-functionalizations that involve intramolecular
hydride transfer steps provide viable alternatives to certain oxidative
reactions. These processes have been known for some time and are particularly
well suited for tertiary amine substrates. A mechanistically distinct
strategy for secondary amines has emerged only recently, despite sharing
common features with a range of classic organic transformations. Among
those are such widely used reactions as the Strecker, Mannich, Pictet–Spengler,
and Kabachnik–Fields reactions, Friedel–Crafts alkylations,
and iminium alkynylations. In these classic processes, condensation
of a secondary amine with an aldehyde (or a ketone) typically leads
to the formation of an intermediate iminium ion, which is subsequently
attacked by a nucleophile. The corresponding redox-versions of these
transformations utilize identical starting materials but incorporate
an isomerization step that enables α-C–H bond functionalization.
Intramolecular versions of these reactions include redox-neutral amine α-amination,
α-oxygenation, and α-sulfenylation. In all cases, a reductive
N-alkylation is effectively combined with an oxidative α-functionalization,
generating water as the only byproduct. Reactions are promoted
by simple carboxylic acids and in some cases
require no additives. Azomethine ylides, dipolar species whose usage
is predominantly in [3 + 2] cycloadditions and other pericyclic processes,
have been identified as common intermediates. Extension of this chemistry
to amine α,β-difunctionalization has been shown to be
possible by way of converting the intermediate azomethine ylides into
transient enamines. This Account details the evolution of this
general strategy and
the progress made to date. Further included is a discussion of related
decarboxylative reactions and transformations that result in the redox-neutral
aromatization of (partially) saturated cyclic amines. These processes
also involve azomethine ylides, reactive intermediates that appear
to be far more prevalent in condensation chemistry of amines and carbonyl
compounds than previously considered. In contrast, as exemplified
by some redox transformations that have been studied in greater detail,
iminium ions are not necessarily involved in all amine/aldehyde condensation
reactions.
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Affiliation(s)
- Daniel Seidel
- Department of Chemistry and
Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, United States
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22
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Bayindir S, Erdogan E, Kilic H, Aydin O, Saracoglu N. Synthesis ofN-Alkylated Indolines and Indoles from Indoline and Aliphatic Ketones. J Heterocycl Chem 2015. [DOI: 10.1002/jhet.2337] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Sinan Bayindir
- Department of Chemistry, Faculty of Sciences; Atatürk University; Erzurum 25240 Turkey
- Department of Chemistry, Faculty of Sciences and Arts; Bingöl University; Bingöl 12000 Turkey
| | - Esra Erdogan
- Department of Chemistry, Faculty of Sciences; Atatürk University; Erzurum 25240 Turkey
| | - Haydar Kilic
- Department of Chemistry, Faculty of Sciences; Atatürk University; Erzurum 25240 Turkey
| | - Omer Aydin
- Department of Chemistry, Faculty of Sciences; Atatürk University; Erzurum 25240 Turkey
| | - Nurullah Saracoglu
- Department of Chemistry, Faculty of Sciences; Atatürk University; Erzurum 25240 Turkey
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23
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Pavan Kumar CS, Harsha KB, Sandhya NC, Ramesha AB, Mantelingu K, Rangappa KS. Highly diastereoselective synthesis of polycyclic amines via redox neutral C–H functionalization. NEW J CHEM 2015. [DOI: 10.1039/c5nj01706h] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Construction of polycyclic amines via C–H functionalization and 3+2 cycloaddition with high diastereoselectivities was achieved under mild conditions.
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24
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Mantelingu K, Lin Y, Seidel D. Intramolecular [3 + 2]-cycloadditions of azomethine ylides derived from secondary amines via redox-neutral C-H functionalization. Org Lett 2014; 16:5910-3. [PMID: 25413125 PMCID: PMC4251528 DOI: 10.1021/ol502918g] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Indexed: 12/17/2022]
Abstract
Azomethine ylides are accessed under mild conditions via benzoic acid catalyzed condensations of 1,2,3,4-tetrahydroisoquinolines or tryptolines with aldehydes bearing a pendent dipolarophile. These intermediates undergo intramolecular [3 + 2]-cycloadditions in a highly diastereoselective fashion to form polycyclic amines with four new stereogenic centers. Challenging substrates such as piperidine, morpholine, and thiomorpholine undergo the corresponding reactions at elevated temperatures.
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Affiliation(s)
- Kempegowda Mantelingu
- Department of Chemistry and
Chemical Biology, Rutgers, The State University
of New Jersey, Piscataway, New Jersey 08854, United States
| | - Yingfu Lin
- Department of Chemistry and
Chemical Biology, Rutgers, The State University
of New Jersey, Piscataway, New Jersey 08854, United States
| | - Daniel Seidel
- Department of Chemistry and
Chemical Biology, Rutgers, The State University
of New Jersey, Piscataway, New Jersey 08854, United States
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25
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Ramakumar K, Tunge JA. Synthesis of N-aryl-1-aminoindoles via intermolecular redox amination. Chem Commun (Camb) 2014; 50:13056-8. [DOI: 10.1039/c4cc06369d] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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26
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Jarvis CL, Richers MT, Breugst M, Houk KN, Seidel D. Redox-neutral α-sulfenylation of secondary amines: ring-fused N,S-acetals. Org Lett 2014; 16:3556-9. [PMID: 24927364 PMCID: PMC4096192 DOI: 10.1021/ol501509b] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
![]()
Secondary amines react with thiosalicylaldehydes
in the presence
of catalytic amounts of acetic acid to generate ring-fused N,S-acetals in redox-neutral fashion. A
broad range of amines undergo α-sulfenylation, including challenging
substrates such morpholine, thiomorpholine, and piperazines. Computational
studies employing density functional theory indicate that acetic acid
reduces the energy barriers of two separate steps, both of which involve
proton transfer.
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Affiliation(s)
- Claire L Jarvis
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey , Piscataway, New Jersey 08854, United States
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27
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Abstract
A complement to the classic three-component Mannich reaction, the redox-Mannich reaction, utilizes the same starting materials but incorporates an isomerization step that enables the facile preparation of ring-substituted β-amino ketones. Reactions occur under relatively mild conditions and are facilitated by benzoic acid.
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Affiliation(s)
- Weijie Chen
- Department
of Chemistry and
Chemical Biology, Rutgers, The State University
of New Jersey, Piscataway, New Jersey 08854, United States
| | - Daniel Seidel
- Department
of Chemistry and
Chemical Biology, Rutgers, The State University
of New Jersey, Piscataway, New Jersey 08854, United States
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28
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Chen W, Kang Y, Wilde RG, Seidel D. Redox-neutral α,β-difunctionalization of cyclic amines. Angew Chem Int Ed Engl 2014; 53:5179-82. [PMID: 24692162 PMCID: PMC4068263 DOI: 10.1002/anie.201311165] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Indexed: 11/06/2022]
Abstract
In contrast to the continuously growing number of methods that allow for the efficient α-functionalization of amines, few strategies exist that enable the direct functionalization of amines in the β-position. A general redox-neutral strategy is outlined for amine β-functionalization and α,β-difunctionalization that utilizes enamines generated in situ. This concept is demonstrated in the context of preparing polycyclic N,O-acetals from simple 1-(aminomethyl)-β-naphthols and 2-(aminomethyl)-phenols.
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Affiliation(s)
- Weijie Chen
- Department of Chemistry and Chemical Biology, Rutgers, The State university of New Jersey, Piscataway, New Jersey 08854 (USA), Phone: (+1) 732-445-6921, Homepage: http://seidel-group.com/
| | - YoungKu Kang
- Department of Chemistry and Chemical Biology, Rutgers, The State university of New Jersey, Piscataway, New Jersey 08854 (USA), Phone: (+1) 732-445-6921, Homepage: http://seidel-group.com/
| | - Richard G. Wilde
- Department of Chemistry and Chemical Biology, Rutgers, The State university of New Jersey, Piscataway, New Jersey 08854 (USA), Phone: (+1) 732-445-6921, Homepage: http://seidel-group.com/
| | - Daniel Seidel
- Department of Chemistry and Chemical Biology, Rutgers, The State university of New Jersey, Piscataway, New Jersey 08854 (USA), Phone: (+1) 732-445-6921, Homepage: http://seidel-group.com/
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29
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Richers M, Breugst M, Platonova AY, Ullrich A, Dieckmann A, Houk KN, Seidel D. Redox-neutral α-oxygenation of amines: reaction development and elucidation of the mechanism. J Am Chem Soc 2014; 136:6123-35. [PMID: 24689802 PMCID: PMC4333595 DOI: 10.1021/ja501988b] [Citation(s) in RCA: 110] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Indexed: 12/19/2022]
Abstract
Cyclic secondary amines and 2-hydroxybenzaldehydes or related ketones react to furnish benzo[e][1,3]oxazine structures in generally good yields. This overall redox-neutral amine α-C-H functionalization features a combined reductive N-alkylation/oxidative α-functionalization and is catalyzed by acetic acid. In contrast to previous reports, no external oxidants or metal catalysts are required. Reactions performed under modified conditions lead to an apparent reductive amination and the formation of o-hydroxybenzylamines in a process that involves the oxidation of a second equivalent of amine. A detailed computational study employing density functional theory compares different mechanistic pathways and is used to explain the observed experimental findings. Furthermore, these results also reveal the origin of the catalytic efficiency of acetic acid in these transformations.
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Affiliation(s)
- Matthew
T. Richers
- Department
of Chemistry and Chemical Biology, Rutgers,
The State University of New Jersey, Piscataway, New Jersey 08854, United States
| | - Martin Breugst
- Department
of Chemistry and Biochemistry, University
of California, Los Angeles, California 90095, United States
- Department
für Chemie, Universität zu
Köln, Greinstraße
4, 50939 Köln, Germany
| | - Alena Yu. Platonova
- Department
of Chemistry and Chemical Biology, Rutgers,
The State University of New Jersey, Piscataway, New Jersey 08854, United States
- Department
of Organic Synthesis Technology, Ural Federal
University, Yekaterinburg 620002, Russia
| | - Anja Ullrich
- Department
of Chemistry and Biochemistry, University
of California, Los Angeles, California 90095, United States
- Institut
für Bioorganische Chemie, Heinrich-Heine
Universität Düsseldorf, Stetternicher Forst, 52426 Jülich, Germany
| | - Arne Dieckmann
- Department
of Chemistry and Biochemistry, University
of California, Los Angeles, California 90095, United States
| | - K. N. Houk
- Department
of Chemistry and Biochemistry, University
of California, Los Angeles, California 90095, United States
| | - Daniel Seidel
- Department
of Chemistry and Chemical Biology, Rutgers,
The State University of New Jersey, Piscataway, New Jersey 08854, United States
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30
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Chen W, Kang Y, Wilde RG, Seidel D. Redox-Neutral α,β-Difunctionalization of Cyclic Amines. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201311165] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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31
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Mori K, Kurihara K, Yabe S, Yamanaka M, Akiyama T. Double C(sp3)–H Bond Functionalization Mediated by Sequential Hydride Shift/Cyclization Process: Diastereoselective Construction of Polyheterocycles. J Am Chem Soc 2014; 136:3744-7. [DOI: 10.1021/ja412706d] [Citation(s) in RCA: 105] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Keiji Mori
- Department
of Chemistry, Faculty of Science, Gakushuin University, Mejiro, Toshima-ku, Tokyo 171-8588, Japan
| | - Kazuki Kurihara
- Department
of Chemistry, Faculty of Science, Gakushuin University, Mejiro, Toshima-ku, Tokyo 171-8588, Japan
| | - Shinnosuke Yabe
- Department
of Chemistry and Research Center for Smart Molecules, Faculty of Science, Rikkyo University, 3-34-1 Nishi-ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Masahiro Yamanaka
- Department
of Chemistry and Research Center for Smart Molecules, Faculty of Science, Rikkyo University, 3-34-1 Nishi-ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Takahiko Akiyama
- Department
of Chemistry, Faculty of Science, Gakushuin University, Mejiro, Toshima-ku, Tokyo 171-8588, Japan
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32
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Abstract
The direct α-arylation/N-alkylation of cyclic amines was achieved in a redox-neutral fashion under mild conditions. Transformations occur in the absence of any additives or are promoted by simple carboxylic acids.
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Affiliation(s)
- Weijie Chen
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, United States
| | - Richard G. Wilde
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, United States
| | - Daniel Seidel
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, United States
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33
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Yadav VD, Dighe SU, Batra S. Synthesis of N-alkyl pyrroles via decarboxylation/dehydration in neutral ionic liquid under catalyst-free conditions. RSC Adv 2014. [DOI: 10.1039/c4ra09797a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
A catalyst-free benign route toN-alkyl pyrroles by reacting aromatic, heteroaromatic or aliphatic aldehydes with 4-hydroxyproline in neutral ionic liquid under microwave irradiation is presented.
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Affiliation(s)
- Veena D. Yadav
- Medicinal & Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow-226031, India
| | - Shashikant U. Dighe
- Medicinal & Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow-226031, India
| | - Sanjay Batra
- Medicinal & Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow-226031, India
- Academy of Scientific and Innovative Research
- New Delhi, India
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34
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Mahato S, Haque MA, Dwari S, Jana CK. Divergent reaction: metal & oxidant free direct C–H aryloxylation and hydride free formal reductive N-benzylation of N-heterocycles. RSC Adv 2014. [DOI: 10.1039/c4ra05045b] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Metal, oxidant and other additive-free novel methods for direct C–H aryloxylation of aliphatic amines are developed. Divergent reaction for the synthesis of ring-fused oxazine and arylmethylamine is developed.
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Affiliation(s)
- Sujit Mahato
- Department of Chemistry
- Indian Institute of Technology Guwahati
- 781039-Guwahati, India
| | - Md Ashraful Haque
- Department of Chemistry
- Indian Institute of Technology Guwahati
- 781039-Guwahati, India
| | - Soumita Dwari
- Department of Chemistry
- Indian Institute of Technology Guwahati
- 781039-Guwahati, India
| | - Chandan K. Jana
- Department of Chemistry
- Indian Institute of Technology Guwahati
- 781039-Guwahati, India
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35
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Mori K, Kurihara K, Akiyama T. Expeditious synthesis of 1-aminoindane derivatives achieved by [1,4]-hydride shift mediated C(sp3)–H bond functionalization. Chem Commun (Camb) 2014; 50:3729-31. [DOI: 10.1039/c4cc00894d] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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36
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Saito K, Shibata Y, Yamanaka M, Akiyama T. Chiral Phosphoric Acid-Catalyzed Oxidative Kinetic Resolution of Indolines Based on Transfer Hydrogenation to Imines. J Am Chem Soc 2013; 135:11740-3. [DOI: 10.1021/ja406004q] [Citation(s) in RCA: 110] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Kodai Saito
- Department of Chemistry, Faculty
of Science, Gakushuin University, 1-5-1
Mejiro, Toshima-ku, Tokyo 171-8588, Japan
| | - Yukihiro Shibata
- Department of Chemistry and
Research Center for Smart Molecules, Faculty of Science, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima-ku,
Tokyo 171-8501, Japan
| | - Masahiro Yamanaka
- Department of Chemistry and
Research Center for Smart Molecules, Faculty of Science, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima-ku,
Tokyo 171-8501, Japan
| | - Takahiko Akiyama
- Department of Chemistry, Faculty
of Science, Gakushuin University, 1-5-1
Mejiro, Toshima-ku, Tokyo 171-8588, Japan
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37
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Zhao P, Liao Q, Gao H, Xi C. Protonated DBU as catalyst for cascade addition–cyclization of 2-alkynylaniline and carbon disulfide. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.02.074] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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38
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Dieckmann A, Richers MT, Platonova AY, Zhang C, Seidel D, Houk KN. Metal-free α-amination of secondary amines: computational and experimental evidence for azaquinone methide and azomethine ylide intermediates. J Org Chem 2013; 78:4132-44. [PMID: 23517448 PMCID: PMC3654248 DOI: 10.1021/jo400483h] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
We have performed a combined computational and experimental study to elucidate the mechanism of a metal-free α-amination of secondary amines. Calculations predicted azaquinone methides and azomethine ylides as the reactive intermediates and showed that iminium ions are unlikely to participate in these transformations. These results were confirmed by experimental deuterium-labeling studies and the successful trapping of the postulated azomethine ylide and azaquinone methide intermediates. In addition, computed barrier heights for the rate-limiting step correlate qualitatively with experimental findings.
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Affiliation(s)
- Arne Dieckmann
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Matthew T. Richers
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, United States
| | - Alena Yu. Platonova
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, United States
- Department of Organic Synthesis Technology, Ural Federal University, Yekaterinburg, 620002, Russia
| | - Chen Zhang
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, United States
| | - Daniel Seidel
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, United States
| | - K. N. Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
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39
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Das D, Sun AX, Seidel D. Redox-neutral copper(II) carboxylate catalyzed α-alkynylation of amines. Angew Chem Int Ed Engl 2013; 52:3765-9. [PMID: 23440869 PMCID: PMC3774004 DOI: 10.1002/anie.201300021] [Citation(s) in RCA: 90] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2013] [Indexed: 11/08/2022]
Abstract
A new strategy for iminium ion isomerization was applied to the direct, redox-neutral α-alkynylation of amines. Cu(II) 2-ethylhexanoate was identified as the optimal catalyst for this three-component coupling reaction of secondary amines, aldehydes and alkynes.
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Affiliation(s)
- Deepankar Das
- Department of Chemistry and Chemical Biology, Rutgers, The State university of New Jersey, Piscataway, New Jersey 08854 (USA), Phone: (+1) 732-445-6921, Homepage: http://seidel-group.com/
| | - Aaron X. Sun
- Department of Chemistry and Chemical Biology, Rutgers, The State university of New Jersey, Piscataway, New Jersey 08854 (USA), Phone: (+1) 732-445-6921, Homepage: http://seidel-group.com/
| | - Daniel Seidel
- Department of Chemistry and Chemical Biology, Rutgers, The State university of New Jersey, Piscataway, New Jersey 08854 (USA), Phone: (+1) 732-445-6921, Homepage: http://seidel-group.com/
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40
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Das D, Sun AX, Seidel D. Redox-Neutral Copper(II) Carboxylate Catalyzed α-Alkynylation of Amines. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201300021] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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41
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Pérez EG, Ocampo C, Feuerbach D, López JJ, Morelo GL, Tapia RA, Arias HR. Novel 1-(1-benzyl-1H-indol-3-yl)-N,N,N-trimethylmethanaminium iodides are competitive antagonists for the human α4β2 and α7 nicotinic acetylcholine receptors. MEDCHEMCOMM 2013. [DOI: 10.1039/c3md00042g] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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42
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You Z, Guo C, Pan Y. An experimental and theoretical study on fragmentation of protonated N-(2-pyridinylmethyl)indole in electrospray ionization mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2012; 26:2509-2516. [PMID: 23008068 DOI: 10.1002/rcm.6371] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
RATIONALE The dissociation reactions of protonated molecules are the base of structural analysis in electrospray ionization tandem mass spectrometry (ESI-MS(n)). However, general rules for elucidating the numerous fragmentation reactions in ESI-MS(n) are still rather lacking. Therefore, it is very important at all times to carry out mechanistic investigations for fragmentation reactions in the gas phase. METHODS The fragmentation reactions of protonated N-(2-pyridinylmethyl)indoles were studied by both of ESI ion trap tandem mass spectrometry and ESI Fourier transform ion cyclotron resonance tandem mass spectrometry in positive-ion mode. RESULTS In ESI-MS/MS, the ionizing proton is first bound to the most thermodynamically favored site, the pyridine nitrogen; then it transfers to the dissociative protonation sites and triggers the fragmentation. In the fragmentation of the target compounds, some interesting reactions, such as rearrangement, proton transfer and electron transfer reactions, take place via ion/neutral complexes. The proposed mechanisms are supported by both theoretical calculations and isotopic labeling experiments. CONCLUSIONS This study is a case for better understanding the dissociative protonation sites and enriching the knowledge about the role of ion/neutral complexes in ESI-MS. It also provides useful information for the structural analysis of organic compounds, especially drug analysis in pharmaceutical chemistry.
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Affiliation(s)
- Zhushuang You
- Department of Chemistry, Zhejiang University, Hangzhou, China
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Abstract
α-Aminonitriles inaccessible by traditional Strecker chemistry are obtained in redox-neutral fashion by direct amine α-cyanation/N-alkylation or alternatively, α-aminonitrile isomerization. These unprecedented transformations are catalyzed by simple carboxylic acids.
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Affiliation(s)
- Longle Ma
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, USA
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44
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Pan SC. Organocatalytic C-H activation reactions. Beilstein J Org Chem 2012; 8:1374-84. [PMID: 23019474 PMCID: PMC3458764 DOI: 10.3762/bjoc.8.159] [Citation(s) in RCA: 125] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2012] [Accepted: 07/31/2012] [Indexed: 12/24/2022] Open
Abstract
Organocatalytic C-H activation reactions have recently been developed besides the traditional metal-catalysed C-H activation reactions. The recent non-asymmetric and asymmetric C-H activation reactions mediated by organocatalysts are discussed in this review.
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Affiliation(s)
- Subhas Chandra Pan
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati, Assam, 781039, India
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45
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Gao X, Gaddam V, Altenhofer E, Tata RR, Cai Z, Yongpruksa N, Garimallaprabhakaran AK, Harmata M. CH Activation in S-Alkenyl Sulfoximines: An Endo 1,5-Hydrogen Migration. Angew Chem Int Ed Engl 2012; 51:7016-9. [DOI: 10.1002/anie.201203258] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2012] [Revised: 05/11/2012] [Indexed: 11/10/2022]
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46
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47
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A new facile approach to N-alkylpyrroles from direct redox reaction of 4-hydroxy-l-proline with aldehydes. Sci China Chem 2011. [DOI: 10.1007/s11426-011-4445-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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48
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Xue X, Yu A, Cai Y, Cheng JP. A computational reinvestigation of the formation of N-alkylpyrroles via intermolecular redox amination. Org Lett 2011; 13:6054-7. [PMID: 22014326 DOI: 10.1021/ol2025247] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A detailed mechanism of N-alkylpyrrole formation from 3-pyrroline and 2-phenylpropanal in the presence of a Brønsted acid catalyst was investigated in depth using the MP2 and DFT theories. The two mechanisms proposed earlier in recent literatures for this internal redox process were evaluated and were found not to account perfectly for the transition state and the energetic barrier of its formation. Based on the present calculations, a new mechanism was put forth.
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Affiliation(s)
- Xiaosong Xue
- State Key Laboratory of Elemento-Ogranic Chemistry, Nankai University, Tianjin 300071, China
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49
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Deb I, Coiro DJ, Seidel D. Decarboxylative formation of N-alkyl pyrroles from 4-hydroxyproline. Chem Commun (Camb) 2011; 47:6473-5. [PMID: 21556391 DOI: 10.1039/c1cc11560j] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
N-Alkyl pyrroles are obtained in a single step from 4-hydroxyproline and aldehydes in just 15 min under microwave irradiation.
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Affiliation(s)
- Indubhusan Deb
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854, USA
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50
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Deb I, Das D, Seidel D. Redox isomerization via azomethine ylide intermediates: N-alkyl indoles from indolines and aldehydes. Org Lett 2011; 13:812-5. [PMID: 21247142 DOI: 10.1021/ol1031359] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Indolines react with aromatic and heteroaromatic aldehydes to yield N-alkyl indoles in a benzoic acid catalyzed redox isomerization reaction. Azomethine ylides are intermediates in this process which was established by intramolecular [3 + 2] trapping experiments.
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Affiliation(s)
- Indubhusan Deb
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, USA
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