1
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Rajendran N, Kamaraj K, Janakiraman S, Saral M, Dixneuf PH, Bheeter CB. A sustainable metal and base-free direct amidation of esters using water as a green solvent. RSC Adv 2023; 13:14958-14962. [PMID: 37200700 PMCID: PMC10186333 DOI: 10.1039/d3ra02637j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Accepted: 04/28/2023] [Indexed: 05/20/2023] Open
Abstract
Herein, we report a simple and efficient synthetic approach for direct amidation of esters via C(acyl)-O bond cleavage without any additional reagents or catalysts, using only water as a green solvent. Subsequently, the reaction byproduct is recovered and utilized for the next phase of ester synthesis. This method emphasized metal-free, additive-free, and base-free characteristics making it a new, sustainable, and eco-friendly way to realize direct amide bond formation. In addition, the synthesis of the drug molecule diethyltoluamide and the Gram-scale synthesis of a representative amide are demonstrated.
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Affiliation(s)
- Nanthini Rajendran
- Department of Chemistry, School of Advanced Sciences, Vellore of Institute of Technology Vellore-632014 TamilNadu India
| | - Kiruthigadevi Kamaraj
- Department of Chemistry, School of Advanced Sciences, Vellore of Institute of Technology Vellore-632014 TamilNadu India
| | - Saranya Janakiraman
- Department of Chemistry, School of Advanced Sciences, Vellore of Institute of Technology Vellore-632014 TamilNadu India
| | - Mary Saral
- Department of Chemistry, School of Advanced Sciences, Vellore of Institute of Technology Vellore-632014 TamilNadu India
| | | | - Charles Beromeo Bheeter
- Department of Chemistry, School of Advanced Sciences, Vellore of Institute of Technology Vellore-632014 TamilNadu India
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2
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Freeman EE, Jackson R, Luo J, Somwaru R, Sons AA, Bean A, Buckle RN, Herr RJ. A Three-Step Method for the Preparation of N-Substituted 3,4-Dihydroisoquinolin-1(2 H)-ones and Heteroaryl-Fused 3,4-Dihydropyridin-2(1 H)-ones from 2-Bromobenzoate Precursors. J Org Chem 2023; 88:2589-2598. [PMID: 36706424 DOI: 10.1021/acs.joc.2c02670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
We demonstrate a general method for the preparation of diverse N-substituted 3,4-dihydroisoquinolin-1(2H)-one compounds through an overall three-step cross-coupling/cyclization/N-deprotection/N-alkylation sequence. In the first step, ethyl 2-bromobenzoates and 2-bromo-1-carboxyethyl heterocycles are cross-coupled with commercially available potassium (2-((tert-butoxycarbonyl)amino)ethyl)trifluoroborate to produce (hetero)aryl-substituted 3-[(N-Boc-2-carboxyethyl)phenyl]ethylamines. In a subsequent two-stage process, these (hetero)arylethylamines undergo base-mediated ring closure followed by N-deprotection and N-alkylation to produce N-substituted 3,4-dihydroisoquinolin-1(2H)-ones and heteroaryl-fused N-benzyl 3,4-dihydropyridin-2(1H)-ones. Mechanistic work was performed to elucidate the order of transformations for the latter two-stage process. The method was also extended to the production of N-benzyl isoindolin-1-one and N-benzyl 2,3,4,5-tetrahydro-1H-benzo[c]azepin-1-one.
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Affiliation(s)
- Emily E Freeman
- Medicinal Chemistry Department, Curia Global, Inc., 26 Corporate Circle, Albany, New York 12203, United States
| | - Randy Jackson
- Medicinal Chemistry Department, Curia Global, Inc., 26 Corporate Circle, Albany, New York 12203, United States
| | - Jessica Luo
- Medicinal Chemistry Department, Curia Global, Inc., 26 Corporate Circle, Albany, New York 12203, United States
| | - Rajen Somwaru
- Medicinal Chemistry Department, Curia Global, Inc., 26 Corporate Circle, Albany, New York 12203, United States
| | - Alex A Sons
- Medicinal Chemistry Department, Curia Global, Inc., 26 Corporate Circle, Albany, New York 12203, United States
| | - Andrew Bean
- Medicinal Chemistry Department, Curia Global, Inc., 26 Corporate Circle, Albany, New York 12203, United States
| | - Ronald N Buckle
- Medicinal Chemistry Department, Curia Global, Inc., 26 Corporate Circle, Albany, New York 12203, United States
| | - R Jason Herr
- Medicinal Chemistry Department, Curia Global, Inc., 26 Corporate Circle, Albany, New York 12203, United States
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3
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Mukherjee A, Nad P, Gupta K, Sen A. Mechanistic Understanding of KOtBu-Mediated Direct Amidation of Esters with Anilines: An Experimental Study and Computational Approach. Chem Asian J 2022; 17:e202200800. [PMID: 36048008 DOI: 10.1002/asia.202200800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 08/22/2022] [Indexed: 11/12/2022]
Abstract
A sustainable and cost-effective protocol has been reported for the synthesis of amide bonds from unactivated esters and non-nucleophilic amines promoted by potassium tert -butoxide under aerobic conditions. The reaction proceeds under relatively mild conditions, encompassing wide substrate scope. A combined experimental and quantum chemical study has been performed to shed light on the mechanism, which implied that a radical pathway is operating for the present protocol.
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Affiliation(s)
- Arup Mukherjee
- Indian Institute of Technology Bhilai, Chemistry, GEC Campus, Raipur, 492015, Raipur, INDIA
| | - Pinaki Nad
- IIT Bhilai: Indian Institute of Technology Bhilai, Chemistry, INDIA
| | - Kriti Gupta
- IIT Bhilai: Indian Institute of Technology Bhilai, Chemistry, INDIA
| | - Anik Sen
- GITAM Institute of Science: Gandhi Institute of Technology and Management Institute of Science, Chemistry, INDIA
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4
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Kumar G, Das C, Acharya A, Bhal S, Joshi M, Kundu CN, Choudhury AR, Guchhait SK. Organocatalyzed umpolung addition for synthesis of heterocyclic-fused arylidene-imidazolones as anticancer agents. Bioorg Med Chem 2022; 67:116835. [PMID: 35617791 DOI: 10.1016/j.bmc.2022.116835] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 05/16/2022] [Accepted: 05/16/2022] [Indexed: 11/18/2022]
Abstract
A strategy of "Nature-to-new" with iterative scaffold-hopping was considered for investigation of privileged ring/functional motif-elaborated analogs of natural aurones. An organocatalyzed umpolung chemistry based method was established for molecular-diversity feasible synthesis of title class of chemotypes i.e. (Z)-2-Arylideneimidazo[1,2-a]pyridinones and (Z)-2-Arylidenebenzo[d]imidazo[2,1-b]thiazol-3-ones. Various biophysical experiments indicated their important biological properties. The analogs showed characteristic anticancer activities with efficiency more than an anticancer drug. The compounds induced apoptosis with arrest in the S phase of the cell cycle regulation. The compounds' significant effect in up/down-regulation of various apoptotic proteins, an apoptosis cascade, and the inhibition of topoisomerases-mediated DNA relaxation process was identified. The analysis of the structure-activity relationship, interference with biological events and the drug-likeness physicochemical properties of the compounds in the acceptable window indicated distinctive medicinal molecule-to-properties of the investigated chemotypes.
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Affiliation(s)
- Gulshan Kumar
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, SAS Nagar, Mohali, Punjab 160062, India
| | - Chinmay Das
- School of Biotechnology, KIIT University, Campus-11, Patia, Bhubaneswar, Orissa 751024, India
| | - Ayan Acharya
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, SAS Nagar, Mohali, Punjab 160062, India
| | - Subhasmita Bhal
- School of Biotechnology, KIIT University, Campus-11, Patia, Bhubaneswar, Orissa 751024, India
| | - Mayank Joshi
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, Sector 81, S. A. S. Nagar, Manauli PO, Mohali, Punjab 140306, India
| | - Chanakya Nath Kundu
- School of Biotechnology, KIIT University, Campus-11, Patia, Bhubaneswar, Orissa 751024, India
| | - Angshuman Roy Choudhury
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, Sector 81, S. A. S. Nagar, Manauli PO, Mohali, Punjab 140306, India
| | - Sankar K Guchhait
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, SAS Nagar, Mohali, Punjab 160062, India.
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5
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Nicholson WI, Barreteau F, Leitch JA, Payne R, Priestley I, Godineau E, Battilocchio C, Browne DL. Direct Amidation of Esters by Ball Milling**. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202106412] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- William I. Nicholson
- School of Chemistry Cardiff University Park Place, Main Building Cardiff CF10 3AT UK
| | - Fabien Barreteau
- Syngenta Crop Protection AG Schaffauserstrasse 101 4332 Stein Switzerland
| | - Jamie A. Leitch
- Department of Pharmaceutical and Biological Chemistry University College London (UCL) School of Pharmacy 29–39 Brunswick Square, Bloomsbury London WC1N 1AX UK
| | - Riley Payne
- Department of Pharmaceutical and Biological Chemistry University College London (UCL) School of Pharmacy 29–39 Brunswick Square, Bloomsbury London WC1N 1AX UK
| | - Ian Priestley
- Syngenta Ltd. Huddersfield Manufacturing Centre Huddersfield HD2 1FF UK
| | - Edouard Godineau
- Syngenta Crop Protection AG Schaffauserstrasse 101 4332 Stein Switzerland
| | | | - Duncan L. Browne
- Department of Pharmaceutical and Biological Chemistry University College London (UCL) School of Pharmacy 29–39 Brunswick Square, Bloomsbury London WC1N 1AX UK
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6
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Nicholson WI, Barreteau F, Leitch JA, Payne R, Priestley I, Godineau E, Battilocchio C, Browne DL. Direct Amidation of Esters by Ball Milling*. Angew Chem Int Ed Engl 2021; 60:21868-21874. [PMID: 34357668 DOI: 10.1002/anie.202106412] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Indexed: 12/25/2022]
Abstract
The direct mechanochemical amidation of esters by ball milling is described. The operationally simple procedure requires an ester, an amine, and substoichiometric KOtBu and was used to prepare a large and diverse library of 78 amide structures with modest to excellent efficiency. Heteroaromatic and heterocyclic components are specifically shown to be amenable to this mechanochemical protocol. This direct synthesis platform has been applied to the synthesis of active pharmaceutical ingredients (APIs) and agrochemicals as well as the gram-scale synthesis of an active pharmaceutical, all in the absence of a reaction solvent.
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Affiliation(s)
- William I Nicholson
- School of Chemistry, Cardiff University, Park Place, Main Building, Cardiff, CF10 3AT, UK
| | - Fabien Barreteau
- Syngenta Crop Protection AG, Schaffauserstrasse 101, 4332, Stein, Switzerland
| | - Jamie A Leitch
- Department of Pharmaceutical and Biological Chemistry, University College London (UCL), School of Pharmacy, 29-39 Brunswick Square, Bloomsbury, London, WC1N 1AX, UK
| | - Riley Payne
- Department of Pharmaceutical and Biological Chemistry, University College London (UCL), School of Pharmacy, 29-39 Brunswick Square, Bloomsbury, London, WC1N 1AX, UK
| | - Ian Priestley
- Syngenta Ltd., Huddersfield Manufacturing Centre, Huddersfield, HD2 1FF, UK
| | - Edouard Godineau
- Syngenta Crop Protection AG, Schaffauserstrasse 101, 4332, Stein, Switzerland
| | | | - Duncan L Browne
- Department of Pharmaceutical and Biological Chemistry, University College London (UCL), School of Pharmacy, 29-39 Brunswick Square, Bloomsbury, London, WC1N 1AX, UK
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7
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Burns M, Perkins D, Chan LC, Pilling MJ, Jawor-Baczynska A, Mullen AK, Steven A, Wimsey C, Elmekawy A, Lamacraft A, Dobson BC, McMillan AE, Hose DRJ, Inglesby PA, Raw SA, Jones MF. Route Design to Manufacture: Synthesis of the Heterocyclic Fragment of AZD5718 Using a Non-cryogenic Lithiation-Alkoxycarbonylation Reaction. Org Process Res Dev 2021. [DOI: 10.1021/acs.oprd.0c00533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Matthew Burns
- Chemical Development, Pharmaceutical Technology & Development, Operations, AstraZeneca, Macclesfield SK10 2NA, United Kingdom
| | - Dave Perkins
- Chemical Development, Pharmaceutical Technology & Development, Operations, AstraZeneca, Macclesfield SK10 2NA, United Kingdom
| | - Lai C. Chan
- Chemical Development, Pharmaceutical Technology & Development, Operations, AstraZeneca, Macclesfield SK10 2NA, United Kingdom
| | - Michael J. Pilling
- Chemical Development, Pharmaceutical Technology & Development, Operations, AstraZeneca, Macclesfield SK10 2NA, United Kingdom
| | - Anna Jawor-Baczynska
- Chemical Development, Pharmaceutical Technology & Development, Operations, AstraZeneca, Macclesfield SK10 2NA, United Kingdom
| | - Alexander K. Mullen
- Chemical Development, Pharmaceutical Technology & Development, Operations, AstraZeneca, Macclesfield SK10 2NA, United Kingdom
| | - Alan Steven
- Chemical Development, Pharmaceutical Technology & Development, Operations, AstraZeneca, Macclesfield SK10 2NA, United Kingdom
| | - Chris Wimsey
- Chemical Development, Pharmaceutical Technology & Development, Operations, AstraZeneca, Macclesfield SK10 2NA, United Kingdom
| | - Ahmed Elmekawy
- Chemical Development, Pharmaceutical Technology & Development, Operations, AstraZeneca, Macclesfield SK10 2NA, United Kingdom
| | - Alex Lamacraft
- Chemical Development, Pharmaceutical Technology & Development, Operations, AstraZeneca, Macclesfield SK10 2NA, United Kingdom
| | - Benjamin C. Dobson
- Chemical Development, Pharmaceutical Technology & Development, Operations, AstraZeneca, Macclesfield SK10 2NA, United Kingdom
| | - Angus E. McMillan
- Chemical Development, Pharmaceutical Technology & Development, Operations, AstraZeneca, Macclesfield SK10 2NA, United Kingdom
| | - David R. J. Hose
- Chemical Development, Pharmaceutical Technology & Development, Operations, AstraZeneca, Macclesfield SK10 2NA, United Kingdom
| | - Phillip A. Inglesby
- Chemical Development, Pharmaceutical Technology & Development, Operations, AstraZeneca, Macclesfield SK10 2NA, United Kingdom
| | - Steven A. Raw
- Chemical Development, Pharmaceutical Technology & Development, Operations, AstraZeneca, Macclesfield SK10 2NA, United Kingdom
| | - Martin F. Jones
- Chemical Development, Pharmaceutical Technology & Development, Operations, AstraZeneca, Macclesfield SK10 2NA, United Kingdom
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8
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Rashed MN, Masuda K, Ichitsuka T, Koumura N, Sato K, Kobayashi S. Zirconium Oxide‐Catalyzed Direct Amidation of Unactivated Esters under Continuous‐Flow Conditions. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202001496] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Md. Nurnobi Rashed
- Interdisciplinary Research Center for Catalytic Chemistry National Institute of Advanced Industrial Science and Technology Central 5 Higashi 1-1-1 Tsukuba Ibaraki 305-8565 Japan
| | - Koichiro Masuda
- Interdisciplinary Research Center for Catalytic Chemistry National Institute of Advanced Industrial Science and Technology Central 5 Higashi 1-1-1 Tsukuba Ibaraki 305-8565 Japan
| | - Tomohiro Ichitsuka
- Interdisciplinary Research Center for Catalytic Chemistry National Institute of Advanced Industrial Science and Technology Central 5 Higashi 1-1-1 Tsukuba Ibaraki 305-8565 Japan
- Research Institute of Chemical Process Technology National Institute of Advanced Industrial Science and Technology Nigatake 4-2-1 Sendai Miyagi 983-8551 Japan
| | - Nagatoshi Koumura
- Interdisciplinary Research Center for Catalytic Chemistry National Institute of Advanced Industrial Science and Technology Central 5 Higashi 1-1-1 Tsukuba Ibaraki 305-8565 Japan
| | - Kazuhiko Sato
- Interdisciplinary Research Center for Catalytic Chemistry National Institute of Advanced Industrial Science and Technology Central 5 Higashi 1-1-1 Tsukuba Ibaraki 305-8565 Japan
| | - Shū Kobayashi
- Interdisciplinary Research Center for Catalytic Chemistry National Institute of Advanced Industrial Science and Technology Central 5 Higashi 1-1-1 Tsukuba Ibaraki 305-8565 Japan
- Department of Chemistry School of Science The University of Tokyo Hongo, Bunkyo-ku Tokyo 113-0033 Japan
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9
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Affiliation(s)
- Mihajlo Todorovic
- Department of Chemistry University of British Columbia Vancouver British Columbia Canada
| | - David M. Perrin
- Department of Chemistry University of British Columbia Vancouver British Columbia Canada
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10
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Massolo E, Pirola M, Benaglia M. Amide Bond Formation Strategies: Latest Advances on a Dateless Transformation. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000080] [Citation(s) in RCA: 77] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Elisabetta Massolo
- Dipartimento di Chimica; Università degli Studi di Milano; Via Golgi 19 20133 Milano Italy
| | - Margherita Pirola
- Dipartimento di Chimica; Università degli Studi di Milano; Via Golgi 19 20133 Milano Italy
| | - Maurizio Benaglia
- Dipartimento di Chimica; Università degli Studi di Milano; Via Golgi 19 20133 Milano Italy
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11
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Yoshikawa C, Ishida H, Itoh T. Incorporation of a coumarin unit by nucleophilic addition reaction into a PPARγ ligand. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.151842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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12
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Patel KP, Gayakwad EM, Shankarling GS. Graphene oxide: a convenient metal-free carbocatalyst for facilitating amidation of esters with amines. NEW J CHEM 2020. [DOI: 10.1039/c9nj05283f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Herein, we have reported a graphene oxide (GO) catalyzed condensation of non-activated esters and amines, that can enable diverse amides to be synthesized from abundant ethyl esters forming only volatile alcohol as a by-product.
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Affiliation(s)
- Khushbu P. Patel
- Department of Dyestuff Technology
- Institute of Chemical Technology
- Mumbai – 400019
- India
| | - Eknath M. Gayakwad
- Department of Dyestuff Technology
- Institute of Chemical Technology
- Mumbai – 400019
- India
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13
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14
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Cheung CW, Shen N, Wang SP, Ullah A, Hu X, Ma JA. Manganese-mediated reductive amidation of esters with nitroarenes. Org Chem Front 2019. [DOI: 10.1039/c8qo01405a] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
N-Aryl amides were synthesized via the manganese-mediated amidation of esters with nitroarenes without the need for additional catalysts or ligands.
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Affiliation(s)
- Chi Wai Cheung
- Department of Chemistry
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences
- and Tianjin Collaborative Innovation Center of Chemical Science & Engineering
- Tianjin University
- Tianjin 300072
| | - Ni Shen
- Department of Chemistry
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences
- and Tianjin Collaborative Innovation Center of Chemical Science & Engineering
- Tianjin University
- Tianjin 300072
| | - Shao-Peng Wang
- Department of Chemistry
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences
- and Tianjin Collaborative Innovation Center of Chemical Science & Engineering
- Tianjin University
- Tianjin 300072
| | - Asim Ullah
- Department of Chemistry
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences
- and Tianjin Collaborative Innovation Center of Chemical Science & Engineering
- Tianjin University
- Tianjin 300072
| | - Xile Hu
- Laboratory of Inorganic Synthesis and Catalysis
- Institute of Chemical Sciences and Engineering
- Ecole Polytechnique Fédérale de Lausanne (EPFL)
- Lausanne 1015
- Switzerland
| | - Jun-An Ma
- Department of Chemistry
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences
- and Tianjin Collaborative Innovation Center of Chemical Science & Engineering
- Tianjin University
- Tianjin 300072
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15
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16
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Li P, Ma N, Wang Z, Dai Q, Hu C. Base-Mediated Intramolecular Decarboxylative Synthesis of Alkylamines from Alkanoyloxycarbamates. J Org Chem 2018; 83:8233-8240. [DOI: 10.1021/acs.joc.8b00970] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Peihe Li
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Nuannuan Ma
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Zheng Wang
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Qipu Dai
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Changwen Hu
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China
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17
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Firdaus, Soekamto NH, Seniwati, Islam MF, Sultan. Phenethyl ester and amide of Ferulic Acids: Synthesis and bioactivity against P388 Leukemia Murine Cells. ACTA ACUST UNITED AC 2018. [DOI: 10.1088/1742-6596/979/1/012016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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18
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Li Z, Wang C, Wang Y, Yuan D, Yao Y. Heterobimetallic Lanthanide-Sodium Alkoxides Catalyze the Amidation of Esters. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800070] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Zhao Li
- Key Laboratory of Organic Synthesis of Jiangsu Province; College of Chemistry, Chemical Engineering and Materials Science, Dushu Lake Campus; Soochow University; Suzhou 215123 P. R. China
| | - Chao Wang
- Key Laboratory of Organic Synthesis of Jiangsu Province; College of Chemistry, Chemical Engineering and Materials Science, Dushu Lake Campus; Soochow University; Suzhou 215123 P. R. China
| | - Yaorong Wang
- Key Laboratory of Organic Synthesis of Jiangsu Province; College of Chemistry, Chemical Engineering and Materials Science, Dushu Lake Campus; Soochow University; Suzhou 215123 P. R. China
| | - Dan Yuan
- Key Laboratory of Organic Synthesis of Jiangsu Province; College of Chemistry, Chemical Engineering and Materials Science, Dushu Lake Campus; Soochow University; Suzhou 215123 P. R. China
| | - Yingming Yao
- Key Laboratory of Organic Synthesis of Jiangsu Province; College of Chemistry, Chemical Engineering and Materials Science, Dushu Lake Campus; Soochow University; Suzhou 215123 P. R. China
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19
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McPherson CG, Cooper AK, Bubliauskas A, Mulrainey P, Jamieson C, Watson AJB. A Multicomponent Route to Functionalized Amides and Oxazolidinones. Org Lett 2017; 19:6736-6739. [PMID: 29193973 DOI: 10.1021/acs.orglett.7b03470] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An organobase-mediated multicomponent reaction of unactivated esters, epoxides, and amines is reported, furnishing functionalized amide derivatives. A wide range of substrates are tolerated under the reaction conditions, including chiral epoxides, which react with no erosion of enantiopurity. Facile modification of the method through replacing the ester derivative with dimethyl carbonate enables access to the corresponding oxazolidinone derivatives.
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Affiliation(s)
- Christopher G McPherson
- Department of Pure & Applied Chemistry, University of Strathclyde , 295 Cathedral Street, Glasgow G1 1XL, U.K
| | - Alasdair K Cooper
- Department of Pure & Applied Chemistry, University of Strathclyde , 295 Cathedral Street, Glasgow G1 1XL, U.K
| | - Andrius Bubliauskas
- Department of Pure & Applied Chemistry, University of Strathclyde , 295 Cathedral Street, Glasgow G1 1XL, U.K
| | - Paul Mulrainey
- Department of Pure & Applied Chemistry, University of Strathclyde , 295 Cathedral Street, Glasgow G1 1XL, U.K
| | - Craig Jamieson
- Department of Pure & Applied Chemistry, University of Strathclyde , 295 Cathedral Street, Glasgow G1 1XL, U.K
| | - Allan J B Watson
- Department of Pure & Applied Chemistry, University of Strathclyde , 295 Cathedral Street, Glasgow G1 1XL, U.K
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20
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Sabatini MT, Boulton LT, Sheppard TD. Borate esters: Simple catalysts for the sustainable synthesis of complex amides. SCIENCE ADVANCES 2017; 3:e1701028. [PMID: 28948222 PMCID: PMC5609808 DOI: 10.1126/sciadv.1701028] [Citation(s) in RCA: 107] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Accepted: 08/28/2017] [Indexed: 05/17/2023]
Abstract
Chemical reactions for the formation of amide bonds are among the most commonly used transformations in organic chemistry, yet they are often highly inefficient. A novel protocol for amidation using a simple borate ester catalyst is reported. The process presents significant improvements over other catalytic amidation methods in terms of efficiency and safety, with an unprecedented substrate scope including functionalized heterocycles and even unprotected amino acids. The method was used to access a wide range of functionalized amide derivatives, including pharmaceutically relevant targets, important synthetic intermediates, a catalyst, and a natural product.
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Affiliation(s)
- Marco T. Sabatini
- Christopher Ingold Laboratories, Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK
| | - Lee T. Boulton
- Medicines Research Centre, GlaxoSmithKline, Gunnels Wood Road, Stevenage, Herts SG1 2NY, UK
| | - Tom D. Sheppard
- Christopher Ingold Laboratories, Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK
- Corresponding author.
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Zhang SL, Wan HX, Deng ZQ. A computational study on the mechanism of ynamide-mediated amide bond formation from carboxylic acids and amines. Org Biomol Chem 2017; 15:6367-6374. [PMID: 28717802 DOI: 10.1039/c7ob01378g] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This paper reports a computational study elucidating the reaction mechanism for ynamide-mediated amide bond formation from carboxylic acids and amines. The mechanisms have been studied in detail for ynamide hydrocarboxylation and the subsequent aminolysis of the resulting adduct by an amine. Ynamide hydrocarboxylation is kinetically favorable and thermodynamically irreversible, resulting in the formation of a key low-lying intermediate CP1 featuring geminal vinylic acyloxy and sulfonamide groups. The aminolysis of CP1 by the amine is proposed to be catalyzed by the carboxylic acid itself that imparts favourable bifunctional effects. In the proposed key transition state TSaminolysis-acid-iso2, the amine undergoes direct nucleophilic substitution at the acyl of CP1 to replace the enolate group in a concerted way, which is promoted by secondary hydrogen bonding of carboxylic acid with both the amine and CP1. These secondary interactions are suggested to increase the nucleophilicity of the amine and to activate the Cacyl-O bond to be cleaved, thereby stabilizing the aminolysis transition state. The concerted aminolysis mechanism is competitive with the classic stepwise nucleophilic acyl substitution mechanism that features sequential amine addition to acyl/intramolecular proton transfer/C-O bond cleavage and a key tetrahedral intermediate. Based on the mechanistic model, the carboxylic acid substrate effect and studies of more acidic CF3SO3H as the catalyst are in good agreement with the experimental observations, lending further support for the mechanistic model. The bifunctional catalytic effect of the carboxylic acid substrate may widely play a role in related amide bond-forming reactions and peptide formation chemistry.
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Affiliation(s)
- Song-Lin Zhang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, Jiangsu Province, China.
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Hamstra DFJ, Lenstra DC, Koenders TJ, Rutjes FPJT, Mecinović J. Poly(methylhydrosiloxane) as a green reducing agent in organophosphorus-catalysed amide bond formation. Org Biomol Chem 2017; 15:6426-6432. [DOI: 10.1039/c7ob01510k] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In situ reduction of phosphine oxide by poly(methylhydrosiloxane) leads to efficient amidation reaction between carboxylic acids and amines.
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Affiliation(s)
- Daan F. J. Hamstra
- Institute for Molecules and Materials
- Radboud University
- 6525 AJ Nijmegen
- The Netherlands
| | - Danny C. Lenstra
- Institute for Molecules and Materials
- Radboud University
- 6525 AJ Nijmegen
- The Netherlands
| | - Tjeu J. Koenders
- Institute for Molecules and Materials
- Radboud University
- 6525 AJ Nijmegen
- The Netherlands
| | | | - Jasmin Mecinović
- Institute for Molecules and Materials
- Radboud University
- 6525 AJ Nijmegen
- The Netherlands
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