1
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Organocatalysis: A Tool of Choice for the Enantioselective Nucleophilic Dearomatization of Electron-Deficient Six-Membered Ring Azaarenium Salts. Catalysts 2021. [DOI: 10.3390/catal11101249] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Nucleophilic dearomatization of azaarenium salts is a powerful strategy to access 3D scaffolds of interest from easily accessible planar aromatic azaarene compounds. Moreover, this approach yields complex dihydroazaarenes by allowing the functionalization of the scaffold simultaneously to the dearomatization step. On the other side, organocatalysis is nowadays recognized as one of the pillars of the asymmetric catalysis field of research and is well-known to afford a high level of enantioselectivity for a myriad of transformations thanks to well-organized transition states resulting from low-energy interactions (electrostatic and/or H-bonding interactions…). Consequently, in the last fifteen years, organocatalysis has met great success in nucleophilic dearomatization of azaarenium salts. This review summarizes the work achieved up to date in the field of organocatalyzed nucleophilic dearomatization of azaarenium salts (mainly pyridinium, quinolinium, quinolinium and acridinium salts). A classification by organocatalytic mode of activation will be disclosed by shedding light on their related advantages and drawbacks. The versatility of the dearomatization approach will also be demonstrated by discussing several chemical transformations of the resulting dihydroazaarenes towards the synthesis of structurally complex compounds.
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2
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Guo M, Dong F, Yin X, Xu L, Wang L, Li SS. Facile syntheses of tetrahydroquinolines and 1,2-dihydroquinolines via vinylogous cascade hydride transfer/cyclization. Org Chem Front 2021. [DOI: 10.1039/d0qo01622e] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The medicinally significant 3-monosubstituted tetrahydroquinolines and 1,2-dihydroquinolines were controllably constructed via redox-neutral vinylogous cascade condensation/[1,5]-hydride transfer/cyclization in EtOH.
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Affiliation(s)
- Mengzhu Guo
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao 266109
- China
| | - Fengying Dong
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao 266109
- China
| | - Xiangcong Yin
- Hematology Diagnosis Laboratory
- The Affiliated Hospital of Qingdao University
- Qingdao
- P. R. 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
- College of Chemistry and Molecular Engineering
| | - Shuai-Shuai Li
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao 266109
- China
- College of Chemistry and Molecular Engineering
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3
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Development of Multi‐Catalytic Strategies Based on the Combination between Iron‐/Copper‐ and Organo‐Catalysis. Isr J Chem 2020. [DOI: 10.1002/ijch.202000018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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4
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Experimental and Computational Studies Unraveling the Peculiarity of Enolizable Oxoesters in the Organocatalyzed Mannich-Type Addition to Cyclic N-Acyl Iminium Ions. Molecules 2020; 25:molecules25081903. [PMID: 32326095 PMCID: PMC7221655 DOI: 10.3390/molecules25081903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 04/15/2020] [Accepted: 04/17/2020] [Indexed: 11/17/2022] Open
Abstract
γ− and δ-Oxoesters are easily available starting materials that have been sparingly used in some organocatalyzed reactions proceeding with a high enantioselectivity. In our experimentation we found that the use of these compounds as the enolizable (nucleophilic) component in organocatalyzed Mannich-type reactions using in situ-generated cyclic N-acyl iminium ions gave low diastereoselectivity and low to moderate values of enantioselectivity. This significant drop of facial selectivity with respect to simple aliphatic aldehydes has been rationalized by means of density functional theory (DFT) calculations.
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5
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Afewerki S, Córdova A. Enamine/Transition Metal Combined Catalysis: Catalytic Transformations Involving Organometallic Electrophilic Intermediates. Top Curr Chem (Cham) 2019; 377:38. [PMID: 31732819 PMCID: PMC6858407 DOI: 10.1007/s41061-019-0267-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Accepted: 11/05/2019] [Indexed: 12/15/2022]
Abstract
The concept of merging enamine activation catalysis with transition metal catalysis is an important strategy, which allows for selective chemical transformations not accessible without this combination. The amine catalyst activates the carbonyl compounds through the formation of a reactive nucleophilic enamine intermediate and, in parallel, the transition metal activates a wide range of functionalities such as allylic substrates through the formation of reactive electrophilic π-allyl-metal complex. Since the first report of this strategy in 2006, considerable effort has been devoted to the successful advancement of this technology. In this chapter, these findings are highlighted and discussed.
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Affiliation(s)
- Samson Afewerki
- Department of Natural Sciences, Mid Sweden University, 851 70, Sundsvall, Sweden.
| | - Armando Córdova
- Department of Natural Sciences, Mid Sweden University, 851 70, Sundsvall, Sweden.
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6
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Vargiu M, Favero L, Menichetti A, Di Bussolo V, Marchetti F, Pescitelli G, Di Pietro S, Pineschi M. Direct enantioselective vinylogous Mannich‐type reactions of acyclic enals: New experimental insights into the
E/Z
‐dilemma. Chirality 2019; 31:522-533. [DOI: 10.1002/chir.23077] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 04/09/2019] [Accepted: 04/17/2019] [Indexed: 01/28/2023]
Affiliation(s)
- Michela Vargiu
- Dipartimento di Farmacia, Sede di Chimica Bioorganica e BiofarmaciaUniversità di Pisa Pisa Italy
| | - Lucilla Favero
- Dipartimento di Farmacia, Sede di Chimica Bioorganica e BiofarmaciaUniversità di Pisa Pisa Italy
| | - Andrea Menichetti
- Dipartimento di Farmacia, Sede di Chimica Bioorganica e BiofarmaciaUniversità di Pisa Pisa Italy
| | - Valeria Di Bussolo
- Dipartimento di Chimica e Chimica IndustrialeUniversità di Pisa Pisa Italy
| | - Fabio Marchetti
- Dipartimento di Chimica e Chimica IndustrialeUniversità di Pisa Pisa Italy
| | - Gennaro Pescitelli
- Dipartimento di Chimica e Chimica IndustrialeUniversità di Pisa Pisa Italy
| | - Sebastiano Di Pietro
- Dipartimento di Farmacia, Sede di Chimica Bioorganica e BiofarmaciaUniversità di Pisa Pisa Italy
| | - Mauro Pineschi
- Dipartimento di Farmacia, Sede di Chimica Bioorganica e BiofarmaciaUniversità di Pisa Pisa Italy
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7
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Advances in the Organocatalytic Asymmetric Mannich Reaction of Six‐Membered Unsaturated Heterocycles: Methodology and Application. ChemCatChem 2019. [DOI: 10.1002/cctc.201900379] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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8
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Lu R, Cao L, Guan H, Liu L. Iron-Catalyzed Aerobic Dehydrogenative Kinetic Resolution of Cyclic Secondary Amines. J Am Chem Soc 2019; 141:6318-6324. [PMID: 30916947 DOI: 10.1021/jacs.9b00615] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A nonenzymatic iron-catalyzed dehydrogenative kinetic resolution of cyclic secondary amines using air as an oxidant has been reported. The economical and practical method is applicable to a series of cyclic benzylic amines, including 5,6-dihydrophenanthridines and 1,2-dihydroquinolines, with diverse functional groups at the α position in high yields with excellent enantioselectivities. The direct dehydrogenative kinetic resolution of advanced intermediates of bioactive molecules that are difficult to access using existing catalytic asymmetric synthetic strategy was also demonstrated.
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Affiliation(s)
- Ran Lu
- School of Pharmaceutical Sciences , Shandong University , Jinan 250012 , China
| | - Liya Cao
- School of Pharmaceutical Sciences , Shandong University , Jinan 250012 , China
| | - Honghao Guan
- School of Chemistry and Chemical Engineering , Shandong University , Jinan 250100 , China
| | - Lei Liu
- School of Pharmaceutical Sciences , Shandong University , Jinan 250012 , China.,School of Chemistry and Chemical Engineering , Shandong University , Jinan 250100 , China
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9
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Wei XH, Li ZH, Zhao LB, Zhang P, Zhou HC, Wang YB. Palladium-catalyzed oxidative cross-coupling for the synthesis of α-amino ketones. RSC Adv 2019; 9:32081-32084. [PMID: 35530775 PMCID: PMC9072988 DOI: 10.1039/c9ra06108h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 09/18/2019] [Indexed: 11/24/2022] Open
Abstract
A novel oxidative cross-coupling reaction for the synthesis of α-aryl α-amino ketones in the presence of palladium catalysts using T+BF4− as an oxidant has been developed. This transformation was achieved by direct C–H oxidation of α-aminocarbonyl compounds and arylation. The mild reaction has a broad reaction scope and gives desired α-aryl α-amino ketones in moderate to excellent yields. A novel oxidative cross-coupling reaction for the synthesis of α-aryl α-amino ketones in the presence of palladium catalysts using T+BF4− as an oxidant has been developed.![]()
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Affiliation(s)
- Xiao-Hong Wei
- Key Laboratory for Utility of Environment-Friendly Composite Materials and Biomass in University of Gansu Province
- College of Chemical Engineering
- Northwest Minzu University
- Lanzhou 730030
- P. R. China
| | - Zhen-Hua Li
- Key Laboratory for Utility of Environment-Friendly Composite Materials and Biomass in University of Gansu Province
- College of Chemical Engineering
- Northwest Minzu University
- Lanzhou 730030
- P. R. China
| | - Lian-Biao Zhao
- Key Laboratory for Utility of Environment-Friendly Composite Materials and Biomass in University of Gansu Province
- College of Chemical Engineering
- Northwest Minzu University
- Lanzhou 730030
- P. R. China
| | - Ping Zhang
- Key Laboratory for Utility of Environment-Friendly Composite Materials and Biomass in University of Gansu Province
- College of Chemical Engineering
- Northwest Minzu University
- Lanzhou 730030
- P. R. China
| | - Han-Cheng Zhou
- Key Laboratory for Utility of Environment-Friendly Composite Materials and Biomass in University of Gansu Province
- College of Chemical Engineering
- Northwest Minzu University
- Lanzhou 730030
- P. R. China
| | - Yan-Bin Wang
- Key Laboratory for Utility of Environment-Friendly Composite Materials and Biomass in University of Gansu Province
- College of Chemical Engineering
- Northwest Minzu University
- Lanzhou 730030
- P. R. China
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10
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Organocatalytic alkylation of carbohydrate-containing aldehydes with dihydroquinoline N,O-acetals: Absolute configuration of 1,2-dihydroquinolines. Chirality 2018; 31:127-137. [DOI: 10.1002/chir.23036] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 10/23/2018] [Accepted: 10/23/2018] [Indexed: 12/20/2022]
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11
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Abstract
Amongst nitrogen heterocycles of different ring sizes and oxidation statuses, dihydropyridines (DHP) occupy a prominent role due to their synthetic versatility and occurrence in medicinally relevant compounds. One of the most straightforward synthetic approaches to polysubstituted DHP derivatives is provided by nucleophilic dearomatization of readily assembled pyridines. In this article, we collect and summarize nucleophilic dearomatization reactions of - pyridines reported in the literature between 2010 and mid-2018, complementing and updating previous reviews published in the early 2010s dedicated to various aspects of pyridine chemistry. Since functionalization of the pyridine nitrogen, rendering a (transient) pyridinium ion, is usually required to render the pyridine nucleus sufficiently electrophilic to suffer the attack of a nucleophile, the material is organized according to the type of N-functionalization. A variety of nucleophilic species (organometallic reagents, enolates, heteroaromatics, umpoled aldehydes) can be productively engaged in pyridine dearomatization reactions, including catalytic asymmetric implementations, providing useful and efficient synthetic platforms to (enantioenriched) DHPs. Conversely, pyridine nitrogen functionalization can also lead to pyridinium ylides. These dipolar species can undergo a variety of dipolar cycloaddition reactions with electron-poor dipolarophiles, affording polycyclic frameworks and embedding a DHP moiety in their structures.
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12
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Sun Q, Zhang YY, Sun J, Han Y, Jia X, Yan CG. Copper-Catalyzed Selective 1,2-Dialkylation of N-Heteroarenes via a Radical Addition/Reduction Process: Application for the Construction of Alkylated Dihydroazaarenes Derivatives. J Org Chem 2018; 83:6640-6649. [DOI: 10.1021/acs.joc.8b00928] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Qiu Sun
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Yuan-Yuan Zhang
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Jing Sun
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Ying Han
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Xiaodong Jia
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Chao-Guo Yan
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
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13
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Bertuzzi G, Pecorari D, Bernardi L, Fochi M. An organocatalytic enantioselective direct α-heteroarylation of aldehydes with isoquinoline N-oxides. Chem Commun (Camb) 2018; 54:3977-3980. [PMID: 29610810 DOI: 10.1039/c8cc01735b] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A new protocol for the enantioselective direct α-heteroarylation of aldehydes with isoquinoline N-oxides, via chiral enamine catalysis, has been successfully developed. High enantiomeric excesses and moderate to good yields were achieved for a variety of α-heteroarylated aldehydes.
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Affiliation(s)
- Giulio Bertuzzi
- Department of Industrial Chemistry "Toso Montanari" & INSTM RU Bologna, Alma Mater Studiorum University of Bologna, V. Risorgimento 4, 40136 Bologna, Italy.
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14
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Mari G, De Crescentini L, Mantellini F, Santeusanio S, Favi G. 5-Methylene N-acyl dihydropyridazinium ions as novel Mannich-type acceptors in 1,4 additions of nucleophiles. Org Chem Front 2018. [DOI: 10.1039/c8qo00032h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Mannich-type addition reactions of various type of nucleophiles with N-acyliminium ions, generated in situ from 5-methylene-6-methoxy-1,4,5,6-tetrahydropyridazines, in the presence of BF3·OEt2, have been developed.
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Affiliation(s)
- Giacomo Mari
- Department of Biomolecular Sciences
- Section of Organic Chemistry and Organic Natural Compounds
- University of Urbino “Carlo Bo” Via I Maggetti 24
- 61029 Urbino (PU)
- Italy
| | - Lucia De Crescentini
- Department of Biomolecular Sciences
- Section of Organic Chemistry and Organic Natural Compounds
- University of Urbino “Carlo Bo” Via I Maggetti 24
- 61029 Urbino (PU)
- Italy
| | - Fabio Mantellini
- Department of Biomolecular Sciences
- Section of Organic Chemistry and Organic Natural Compounds
- University of Urbino “Carlo Bo” Via I Maggetti 24
- 61029 Urbino (PU)
- Italy
| | - Stefania Santeusanio
- Department of Biomolecular Sciences
- Section of Organic Chemistry and Organic Natural Compounds
- University of Urbino “Carlo Bo” Via I Maggetti 24
- 61029 Urbino (PU)
- Italy
| | - Gianfranco Favi
- Department of Biomolecular Sciences
- Section of Organic Chemistry and Organic Natural Compounds
- University of Urbino “Carlo Bo” Via I Maggetti 24
- 61029 Urbino (PU)
- Italy
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15
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Vila C, Rendón-Patiño A, Montesinos-Magraner M, Blay G, Muñoz MC, Pedro JR. Organocatalytic Enantioselective Functionalization of Hydroxyquinolines through an Aza-Friedel-Crafts Alkylation with Isatin-derived Ketimines. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201701217] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Carlos Vila
- Departament de Química Orgànica, Facultat de Química; Universitat de València; Dr. Moliner 50 46100 Burjassot València Spain
| | - Alejandra Rendón-Patiño
- Departament de Química Orgànica, Facultat de Química; Universitat de València; Dr. Moliner 50 46100 Burjassot València Spain
| | - Marc Montesinos-Magraner
- Departament de Química Orgànica, Facultat de Química; Universitat de València; Dr. Moliner 50 46100 Burjassot València Spain
| | - Gonzalo Blay
- Departament de Química Orgànica, Facultat de Química; Universitat de València; Dr. Moliner 50 46100 Burjassot València Spain
| | - M. Carmen Muñoz
- Departament de Física Aplicada; Universitat Politècnica de València; Camino de Vera s/n 46022 València Spain
| | - José R. Pedro
- Departament de Química Orgànica, Facultat de Química; Universitat de València; Dr. Moliner 50 46100 Burjassot València Spain
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16
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Touati B, El Bouakher A, Azizi MS, Taillier C, Ben Othman R, Trabelsi-Ayadi M, Antoniotti S, Duñach E, Dalla V. Atom-Economic Catalytic Direct Substitution of N,O-Acetals with Simple Ketones. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700530] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Bahria Touati
- Université du Havre; FR 3032 CNRS; URCOM EA3221; 25, Rue Philippe Lebon, BP 540 76058 Le Havre France
- Laboratoire d'Application de la Chimie aux Ressources et Substances Naturelles et à l'Environnement-LACReSNE-Faculté des Sciences de Bizerte; Université de Carthage; 7021 Bizerte, Carthage Tunisie
| | - Abderrahman El Bouakher
- Université du Havre; FR 3032 CNRS; URCOM EA3221; 25, Rue Philippe Lebon, BP 540 76058 Le Havre France
| | - Mohamed Salah Azizi
- Université du Havre; FR 3032 CNRS; URCOM EA3221; 25, Rue Philippe Lebon, BP 540 76058 Le Havre France
- Laboratoire d'Application de la Chimie aux Ressources et Substances Naturelles et à l'Environnement-LACReSNE-Faculté des Sciences de Bizerte; Université de Carthage; 7021 Bizerte, Carthage Tunisie
| | - Catherine Taillier
- Université du Havre; FR 3032 CNRS; URCOM EA3221; 25, Rue Philippe Lebon, BP 540 76058 Le Havre France
| | - Raja Ben Othman
- Ecole supérieure des sciences et de technologie de Hammam Sousse; Rue Lamine Abassi 4011 H. Sousse Tunisie
| | - Malika Trabelsi-Ayadi
- Laboratoire d'Application de la Chimie aux Ressources et Substances Naturelles et à l'Environnement-LACReSNE-Faculté des Sciences de Bizerte; Université de Carthage; 7021 Bizerte, Carthage Tunisie
| | - Sylvain Antoniotti
- Université Côte d'Azur; C.N.R.S.; Institut de Chimie de Nice; Parc Valrose 06108 Nice cedex 2 France
| | - Elisabet Duñach
- Université Côte d'Azur; C.N.R.S.; Institut de Chimie de Nice; Parc Valrose 06108 Nice cedex 2 France
| | - Vincent Dalla
- Université du Havre; FR 3032 CNRS; URCOM EA3221; 25, Rue Philippe Lebon, BP 540 76058 Le Havre France
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17
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Qi C, Gandon V, Lebœuf D. Calcium(II)-Catalyzed Alkenylation ofN-Acyliminiums and Related Ions with Vinylboronic Acids. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700214] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Chenxiao Qi
- Institut de Chimie Moléculaire et des Matériaux d'Orsay; CNRS UMR 8182; Université Paris-Sud; Université Paris-Saclay; Bâtiment 420 91405 Orsay cedex France
| | - Vincent Gandon
- Institut de Chimie Moléculaire et des Matériaux d'Orsay; CNRS UMR 8182; Université Paris-Sud; Université Paris-Saclay; Bâtiment 420 91405 Orsay cedex France
| | - David Lebœuf
- Institut de Chimie Moléculaire et des Matériaux d'Orsay; CNRS UMR 8182; Université Paris-Sud; Université Paris-Saclay; Bâtiment 420 91405 Orsay cedex France
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18
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Bertuzzi G, Sinisi A, Pecorari D, Caruana L, Mazzanti A, Bernardi L, Fochi M. Nucleophilic Dearomatization of Pyridines under Enamine Catalysis: Regio-, Diastereo-, and Enantioselective Addition of Aldehydes to Activated N-Alkylpyridinium Salts. Org Lett 2017; 19:834-837. [PMID: 28128963 DOI: 10.1021/acs.orglett.6b03824] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Catalytic addition of chiral enamines to azinium salts is a powerful tool for the synthesis of enantioenriched heterocycles. An unprecedented asymmetric dearomative addition of aldehydes to activated N-alkylpyridinium salts is presented. The process exhibits complete C-4 regioselectivity along with high levels of diastereo- and enantiocontrol, achieving a high-yielding synthesis of a broad range of optically active 1,4-dihydropyridines. Moreover, the presented methodology enables the synthesis of functionalized octahydropyrrolo[2,3-c]pyridines, the core structure of anticancer peptidomimetics.
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Affiliation(s)
- Giulio Bertuzzi
- Department of Industrial Chemistry "Toso Montanari" and INSTM RU Bologna, Alma Mater Studiorum-University of Bologna , Via Risorgimento 4, 40136 Bologna, Italy
| | - Alessandro Sinisi
- Department of Industrial Chemistry "Toso Montanari" and INSTM RU Bologna, Alma Mater Studiorum-University of Bologna , Via Risorgimento 4, 40136 Bologna, Italy
| | - Daniel Pecorari
- Department of Industrial Chemistry "Toso Montanari" and INSTM RU Bologna, Alma Mater Studiorum-University of Bologna , Via Risorgimento 4, 40136 Bologna, Italy
| | - Lorenzo Caruana
- Department of Industrial Chemistry "Toso Montanari" and INSTM RU Bologna, Alma Mater Studiorum-University of Bologna , Via Risorgimento 4, 40136 Bologna, Italy
| | - Andrea Mazzanti
- Department of Industrial Chemistry "Toso Montanari" and INSTM RU Bologna, Alma Mater Studiorum-University of Bologna , Via Risorgimento 4, 40136 Bologna, Italy
| | - Luca Bernardi
- Department of Industrial Chemistry "Toso Montanari" and INSTM RU Bologna, Alma Mater Studiorum-University of Bologna , Via Risorgimento 4, 40136 Bologna, Italy
| | - Mariafrancesca Fochi
- Department of Industrial Chemistry "Toso Montanari" and INSTM RU Bologna, Alma Mater Studiorum-University of Bologna , Via Risorgimento 4, 40136 Bologna, Italy
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19
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Wei XH, Zhao LB, Zhou HC. Oxidative cross-coupling reaction by scandium catalysis for synthesis of α-alkyl α-amino acid ester derivatives. RSC Adv 2017. [DOI: 10.1039/c7ra00664k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
A novel oxidative cross-coupling reaction between N-arylglycine esters and alkyl boronic acid esters was developed by scandium catalysis.
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Affiliation(s)
- Xiao-Hong Wei
- Key Laboratory for Utility of Environment-Friendly Composite Materials and Biomass in University of Gansu Province
- College of Chemical Engineering
- Northwest University for Nationalities
- Lanzhou 730030
- P. R. China
| | - Lian-Biao Zhao
- Key Laboratory for Utility of Environment-Friendly Composite Materials and Biomass in University of Gansu Province
- College of Chemical Engineering
- Northwest University for Nationalities
- Lanzhou 730030
- P. R. China
| | - Han-Cheng Zhou
- Key Laboratory for Utility of Environment-Friendly Composite Materials and Biomass in University of Gansu Province
- College of Chemical Engineering
- Northwest University for Nationalities
- Lanzhou 730030
- P. R. China
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20
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Liu Z, Chen L, Li J, Liu K, Zhao J, Xu M, Feng L, Wan RZ, Li W, Liu L. Oxidative C–H functionalization of N-carbamoyl 1,2-dihydroquinolines. Org Biomol Chem 2017; 15:7600-7606. [DOI: 10.1039/c7ob01793f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A modular and efficient method for the synthesis of α-substituted 1,2-dihydroquinolines through an oxidative C–H functionalization strategy is described.
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Affiliation(s)
- Ziqiang Liu
- Shenzhen Research Institute of Shandong University
- Shenzhen 518057
- China
- Department of Pharmaceutical Analysis
- School of Pharmacy
| | - Lei Chen
- College of Animal Science and Veterinary Medicine
- Shandong Agricultural University
- Taian 271018
- China
| | - Jing Li
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
- China
| | - Ke Liu
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
- China
| | - Jiaqi Zhao
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
- China
| | - Mengmeng Xu
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
- China
| | - Lei Feng
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
- China
| | - Ren-zhong Wan
- College of Animal Science and Veterinary Medicine
- Shandong Agricultural University
- Taian 271018
- China
| | - Wei Li
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Shandong University of Traditional Chinese Medicine
- Shandong 250355
- China
| | - Lei Liu
- Shenzhen Research Institute of Shandong University
- Shenzhen 518057
- China
- School of Chemistry and Chemical Engineering
- Shandong University
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21
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Afewerki S, Córdova A. Combinations of Aminocatalysts and Metal Catalysts: A Powerful Cooperative Approach in Selective Organic Synthesis. Chem Rev 2016; 116:13512-13570. [PMID: 27723291 DOI: 10.1021/acs.chemrev.6b00226] [Citation(s) in RCA: 350] [Impact Index Per Article: 43.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The cooperation and interplay between organic and metal catalyst systems is of utmost importance in nature and chemical synthesis. Here innovative and selective cooperative catalyst systems can be designed by combining two catalysts that complement rather than inhibit one another. This refined strategy can permit chemical transformations unmanageable by either of the catalysts alone. This review summarizes innovations and developments in selective organic synthesis that have used cooperative dual catalysis by combining simple aminocatalysts with metal catalysts. Considerable efforts have been devoted to this fruitful field. This emerging area employs the different activation modes of amine and metal catalysts as a platform to address challenging reactions. Here, aminocatalysis (e.g., enamine activation catalysis, iminium activation catalysis, single occupied molecular orbital (SOMO) activation catalysis, and photoredox activation catalysis) is employed to activate unreactive carbonyl substrates. The transition metal catalyst complements by activating a variety of substrates through a range of interactions (e.g., electrophilic π-allyl complex formation, Lewis acid activation, allenylidene complex formation, photoredox activation, C-H activation, etc.), and thereby novel concepts within catalysis are created. The inclusion of heterogeneous catalysis strategies allows for "green" chemistry development, catalyst recyclability, and the more eco-friendly synthesis of valuable compounds.
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Affiliation(s)
- Samson Afewerki
- Department of Natural Sciences, Mid Sweden University , SE-851 70 Sundsvall, Sweden.,Berzelii Center EXSELENT, The Arrhenius Laboratory, Stockholm University , SE-106 91 Stockholm, Sweden
| | - Armando Córdova
- Department of Natural Sciences, Mid Sweden University , SE-851 70 Sundsvall, Sweden.,Berzelii Center EXSELENT, The Arrhenius Laboratory, Stockholm University , SE-106 91 Stockholm, Sweden
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22
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Bertuzzi G, Sinisi A, Caruana L, Mazzanti A, Fochi M, Bernardi L. Catalytic Enantioselective Addition of Indoles to Activated N-Benzylpyridinium Salts: Nucleophilic Dearomatization of Pyridines with Unusual C-4 Regioselectivity. ACS Catal 2016. [DOI: 10.1021/acscatal.6b01962] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Giulio Bertuzzi
- Department of Industrial
Chemistry “Toso Montanari” and INSTM RU Bologna, Alma Mater Studiorum—University of Bologna, V. Risorgimento 4, 40136 Bologna, Italy
| | - Alessandro Sinisi
- Department of Industrial
Chemistry “Toso Montanari” and INSTM RU Bologna, Alma Mater Studiorum—University of Bologna, V. Risorgimento 4, 40136 Bologna, Italy
| | - Lorenzo Caruana
- Department of Industrial
Chemistry “Toso Montanari” and INSTM RU Bologna, Alma Mater Studiorum—University of Bologna, V. Risorgimento 4, 40136 Bologna, Italy
| | - Andrea Mazzanti
- Department of Industrial
Chemistry “Toso Montanari” and INSTM RU Bologna, Alma Mater Studiorum—University of Bologna, V. Risorgimento 4, 40136 Bologna, Italy
| | - Mariafrancesca Fochi
- Department of Industrial
Chemistry “Toso Montanari” and INSTM RU Bologna, Alma Mater Studiorum—University of Bologna, V. Risorgimento 4, 40136 Bologna, Italy
| | - Luca Bernardi
- Department of Industrial
Chemistry “Toso Montanari” and INSTM RU Bologna, Alma Mater Studiorum—University of Bologna, V. Risorgimento 4, 40136 Bologna, Italy
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23
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Affiliation(s)
- Yi-Yong Huang
- Department
of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, P.R. China
| | - Chen Cai
- Department
of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, P.R. China
| | - Xing Yang
- Department
of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, P.R. China
| | - Zong-Chao Lv
- Department
of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, P.R. China
| | - Uwe Schneider
- EaStCHEM
School of Chemistry, The University of Edinburgh, The King’s Buildings, David
Brewster Road, Edinburgh EH9 3FJ, United Kingdom
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24
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Xie Z, Zan X, Sun S, Pan X, Liu L. Organocatalytic Enantioselective Cross-Dehydrogenative Coupling of N-Carbamoyl Cyclic Amines with Aldehydes. Org Lett 2016; 18:3944-7. [DOI: 10.1021/acs.orglett.6b01625] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhiyu Xie
- School
of Pharmaceutical Sciences, Shandong University, Jinan 250012, China
| | - Xin Zan
- School
of Pharmaceutical Sciences, Shandong University, Jinan 250012, China
- Department
of Pharmacy, Xi’an Central Hospital, Xi’an 710003, China
| | - Shutao Sun
- School
of Pharmaceutical Sciences, Shandong University, Jinan 250012, China
| | - Xinhui Pan
- School
of Pharmaceutical Sciences, Shandong University, Jinan 250012, China
| | - Lei Liu
- School
of Pharmaceutical Sciences, Shandong University, Jinan 250012, China
- School
of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
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25
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Zhang M, Sun W, Zhu G, Bao G, Zhang B, Hong L, Li M, Wang R. Enantioselective Dearomative Arylation of Isoquinolines. ACS Catal 2016. [DOI: 10.1021/acscatal.6b01693] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Ming Zhang
- Key
Laboratory of Preclinical Study for New Drugs of Gansu Province, Lanzhou University, Lanzhou, 730000, China
| | - Wangsheng Sun
- Key
Laboratory of Preclinical Study for New Drugs of Gansu Province, Lanzhou University, Lanzhou, 730000, China
| | - Gongming Zhu
- Key
Laboratory of Preclinical Study for New Drugs of Gansu Province, Lanzhou University, Lanzhou, 730000, China
| | - Guangjun Bao
- Key
Laboratory of Preclinical Study for New Drugs of Gansu Province, Lanzhou University, Lanzhou, 730000, China
| | - Bangzhi Zhang
- Key
Laboratory of Preclinical Study for New Drugs of Gansu Province, Lanzhou University, Lanzhou, 730000, China
| | - Liang Hong
- School
of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Min Li
- School
of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Rui Wang
- School
of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
- Key
Laboratory of Preclinical Study for New Drugs of Gansu Province, Lanzhou University, Lanzhou, 730000, China
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26
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Mengozzi L, Gualandi A, Cozzi PG. Organocatalytic Stereoselective Addition of Aldehydes to Acylquinolinium Ions. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600284] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Luca Mengozzi
- Dipartimento di Chimica “G. Ciamician”; Alma Mater Studiorum; Università di Bologna; Address Via Selmi 2 40126 Bologna Italy
| | - Andrea Gualandi
- Dipartimento di Chimica “G. Ciamician”; Alma Mater Studiorum; Università di Bologna; Address Via Selmi 2 40126 Bologna Italy
| | - Pier Giorgio Cozzi
- Dipartimento di Chimica “G. Ciamician”; Alma Mater Studiorum; Università di Bologna; Address Via Selmi 2 40126 Bologna Italy
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27
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Yu C, Huang H, Li X, Zhang Y, Li H, Wang W. Aniline-Promoted Cyclization-Replacement Cascade Reactions of 2-Hydroxycinnamaldehydes with Various Carbonic Nucleophiles through In Situ Formed N,O-Acetals. Chemistry 2016; 22:9240-6. [PMID: 27230417 DOI: 10.1002/chem.201601112] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Indexed: 11/12/2022]
Abstract
In this study, we report the harnessing of new reactivity of N,O-acetals in an aminocatalytic fashion for organic synthesis. Unlike widely used strategies requiring the use of acids and/or elevated temperatures, direct replacement of the amine component of the N,O-acetals by carbon-centered nucleophiles for C-C bond formation is realized under mild reaction conditions. Furthermore, without necessary preformation of the N,O-acetals, an amine-catalyzed in situ formation of N,O-acetals is developed. Coupling both reactions into a one-pot operation enables the achievement of a catalytic process. We demonstrate the employment of simple anilines as promoters for the cyclization-substitution cascade reactions of trans-2-hydroxycinnamaldehydes with various carbonic nucleophiles including indoles, pyrroles, naphthols, phenols, and silyl enol ethers. The process offers an alternative approach to structurally diverse, "privileged" 2-substituted 2H-chromenes. The synthetic power of the new process is furthermore shown by its application in a 2-step synthesis of the natural product candenatenin E and for the facile installation of 2-substituted 2H-chromene moieties into biologically active indoles.
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Affiliation(s)
- Chenguang Yu
- Department of Chemistry & Chemical Biology, University of New Mexico, MSC03 2060, Albuquerque, NM, 87131-0001, USA
| | - He Huang
- Department of Chemistry & Chemical Biology, University of New Mexico, MSC03 2060, Albuquerque, NM, 87131-0001, USA
| | - Xiangmin Li
- Department of Chemistry & Chemical Biology, University of New Mexico, MSC03 2060, Albuquerque, NM, 87131-0001, USA.,School of Pharmacy, East University of Science and Technology, 130 Mei-Long Road, Shanghai, 200237, P. R. China
| | - Yueteng Zhang
- Department of Chemistry & Chemical Biology, University of New Mexico, MSC03 2060, Albuquerque, NM, 87131-0001, USA
| | - Hao Li
- School of Pharmacy, East University of Science and Technology, 130 Mei-Long Road, Shanghai, 200237, P. R. China.
| | - Wei Wang
- Department of Chemistry & Chemical Biology, University of New Mexico, MSC03 2060, Albuquerque, NM, 87131-0001, USA. .,School of Pharmacy, East University of Science and Technology, 130 Mei-Long Road, Shanghai, 200237, P. R. China.
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28
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Touati B, El Bouakher A, Taillier C, Othman RB, Trabelsi-Ayadi M, Antoniotti S, Duñach E, Dalla V. Enolizable Carbonyls and N,O-Acetals: A Rational Approach for Room-Temperature Lewis Superacid-Catalyzed Direct α-Amidoalkylation of Ketones and Aldehydes. Chemistry 2016; 22:6012-22. [PMID: 26992138 DOI: 10.1002/chem.201504772] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Indexed: 11/11/2022]
Abstract
An efficient catalytic room-temperature direct α-amidoalkylation of carbonyl donors, that is, ketones and aldehydes with unbiased N,O-acetals, is described. Sn(NTf2 )4 is an optimal catalyst to promote this challenging transformation at low loading and the reaction shows promising scope. A comprehensive and rational evaluation of this reaction has led to the establishment of an empirical scale of nucleophilic reactivity for a broad set of ketones that should be helpful in the synthetic design and development of carbonyl α-functionalization methods.
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Affiliation(s)
- Bahria Touati
- Normandie Univ., UNIHAVRE, CNRS, URCOM, 76600, Le Havre, France.,Laboratoire d'Application de la Chimie aux Ressources et Substances Naturelles et à l'Environnement-, LACReSNE-Faculté des Sciences de Bizerte-, 7021, Bizerte, Université de Carthage, Tunisie
| | | | | | - Raja Ben Othman
- Ecole supérieure des sciences et de technologie de Hammam Sousse, Rue Lamine Abassi, 4011H, Sousse, Tunisie
| | - Malika Trabelsi-Ayadi
- Laboratoire d'Application de la Chimie aux Ressources et Substances Naturelles et à l'Environnement-, LACReSNE-Faculté des Sciences de Bizerte-, 7021, Bizerte, Université de Carthage, Tunisie
| | - Sylvain Antoniotti
- Institut de Chimie de Nice, UMR 7272, Université de Nice Sophia Antipolis, C.N.R.S., Parc Valrose, 06108, Nice cedex 2, France
| | - Elisabet Duñach
- Institut de Chimie de Nice, UMR 7272, Université de Nice Sophia Antipolis, C.N.R.S., Parc Valrose, 06108, Nice cedex 2, France
| | - Vincent Dalla
- Normandie Univ., UNIHAVRE, CNRS, URCOM, 76600, Le Havre, France.
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29
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Sun Y, Wang G, Chen J, Liu C, Cai M, Zhu R, Huang H, Li W, Liu L. A practical oxidative C–H functionalization of N-carbamoyl tetrahydro-β-carbolines with diverse potassium trifluoroborates. Org Biomol Chem 2016; 14:9431-9438. [DOI: 10.1039/c6ob01171c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A practical and mild metal-free oxidative C–H functionalization ofN-carbamoyl tetrahydro-β-carbolines with diverse potassium trifluoroborates has been reported.
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Affiliation(s)
- Yi Sun
- School of Pharmaceutical Sciences
- Shandong University
- Jinan 250012
- China
- Department of Pharmaceutical Analysis
| | - Gang Wang
- School of Pharmaceutical Sciences
- Shandong University
- Jinan 250012
- China
| | - Jiayu Chen
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Shandong University of Traditional Chinese Medicine
- Shandong 250355
- China
| | - Chang Liu
- School of Pharmaceutical Sciences
- Shandong University
- Jinan 250012
- China
| | - Manqi Cai
- School of Pharmaceutical Sciences
- Shandong University
- Jinan 250012
- China
| | - Rongxiu Zhu
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
- China
| | - Haofei Huang
- College of Chemical Engineering
- Shandong University of Technology
- Zibo 255049
- China
| | - Wei Li
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Shandong University of Traditional Chinese Medicine
- Shandong 250355
- China
| | - Lei Liu
- School of Pharmaceutical Sciences
- Shandong University
- Jinan 250012
- China
- School of Chemistry and Chemical Engineering
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30
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Fischer T, Bamberger J, Mancheño OG. Asymmetric nucleophilic dearomatization of diazarenes by anion-binding catalysis. Org Biomol Chem 2016; 14:5794-802. [DOI: 10.1039/c6ob00248j] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The first highly regio- and enantioselective nucleophilic dearomatization of diazarenes by anion-binding organocatalysis is reported.
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Affiliation(s)
- Theresa Fischer
- Institute for Organic Chemistry
- University of Regensburg
- 93053 Regensburg
- Germany
| | - Julia Bamberger
- Institute for Organic Chemistry
- University of Regensburg
- 93053 Regensburg
- Germany
- Straubing Center of Science for Renewable Resources
| | - Olga García Mancheño
- Institute for Organic Chemistry
- University of Regensburg
- 93053 Regensburg
- Germany
- Straubing Center of Science for Renewable Resources
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31
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Volla CMR, Fava E, Atodiresei I, Rueping M. Dual metal and Lewis base catalysis approach for asymmetric synthesis of dihydroquinolines and the α-arylation of aldehydes via N-acyliminium ions. Chem Commun (Camb) 2015; 51:15788-91. [DOI: 10.1039/c5cc05209b] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A dual catalytic system consisting of indium triflate and a chiral imidazolidinone catalyzes the asymmetric addition of aldehydes to N-acyl quinoliniums furnishing optically active dihydroquinolines in good yields and excellent selectivities.
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Affiliation(s)
| | - Eleonora Fava
- Institute of Organic Chemistry
- RWTH Aachen University
- Aachen
- Germany
| | | | - Magnus Rueping
- Institute of Organic Chemistry
- RWTH Aachen University
- Aachen
- Germany
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32
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Wan M, Lou H, Liu L. C1-Benzyl and benzoyl isoquinoline synthesis through direct oxidative cross-dehydrogenative coupling with methyl arenes. Chem Commun (Camb) 2015; 51:13953-6. [DOI: 10.1039/c5cc04791a] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
An oxidative cross-dehydrogenative coupling of isoquinolines with methyl arenes has been developed, yielding structurally diverse C1-benzyl and -benzoyl isoquinolines selectively. The direct use of readily available methyl arenes as coupling partners avoids unproductive steps for preactivating functional group installation, and is thereby attractive.
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Affiliation(s)
- Miao Wan
- Key Lab of Chemical Biology of Education Ministry
- School of Pharmaceutical Sciences
- Jinan 250012
- China
| | - Hongxiang Lou
- Key Lab of Chemical Biology of Education Ministry
- School of Pharmaceutical Sciences
- Jinan 250012
- China
| | - Lei Liu
- Key Lab of Chemical Biology of Education Ministry
- School of Pharmaceutical Sciences
- Jinan 250012
- China
- Key Lab for Colloid and Interface Chemistry of Education Ministry
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33
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Chen J, Wan M, Hua J, Sun Y, Lv Z, Li W, Liu L. TBHP/TFA mediated oxidative cross-dehydrogenative coupling of N-heterocycles with aldehydes. Org Biomol Chem 2015; 13:11561-6. [DOI: 10.1039/c5ob01763g] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A metal-free oxidative cross-dehydrogenative coupling of N-heterocycles with diverse aldehydes has been established in the presence of TBHP/TFA.
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Affiliation(s)
- Jiayu Chen
- School of Pharmaceutical Sciences
- Jinan 250012
- P. R. China
- Department of Pharmaceutical Analysis
- School of Pharmacy
| | - Miao Wan
- School of Pharmaceutical Sciences
- Jinan 250012
- P. R. China
| | - Jing Hua
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Guangxi Normal University)
- Ministry of Education of China
- Guilin 541004
- China
| | - Yi Sun
- School of Pharmaceutical Sciences
- Jinan 250012
- P. R. China
- Department of Pharmaceutical Analysis
- School of Pharmacy
| | - Zheng Lv
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Shandong University of Traditional Chinese Medicine
- Shandong 250355
- China
| | - Wei Li
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Shandong University of Traditional Chinese Medicine
- Shandong 250355
- China
| | - Lei Liu
- School of Pharmaceutical Sciences
- Jinan 250012
- P. R. China
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Guangxi Normal University)
- Ministry of Education of China
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