1
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Lee SE, Kim Y, Lee YH, Lim HN. C-C Bond Cleavage-Induced C- to N-Acyl Transfer for Synthesis of Amides. Org Lett 2024; 26:3646-3651. [PMID: 38656111 DOI: 10.1021/acs.orglett.4c01154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
A new approach for the preparation of amides was developed using C-C bond cleavage that initiates C- to N-acyl transfer, employing activated ketones as acylation reagents and amine nucleophiles. The reaction was operational under the coupling reagent system that is commonly utilized for peptide bond formations. The method enables practical preparation of amides using linear and cyclic ketone substrates under mild conditions.
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Affiliation(s)
- Su Eun Lee
- Department of Chemistry, Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk 38541, Republic of Korea
| | - Youngsoo Kim
- Department of Chemistry, Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk 38541, Republic of Korea
| | - Yong Ho Lee
- Department of Chemistry and Center for Proteogenome Research, Korea University, Seoul 02841, Republic of Korea
| | - Hee Nam Lim
- Department of Chemistry, Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk 38541, Republic of Korea
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2
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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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3
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Sustainable amidation through acceptorless dehydrogenative coupling by pincer-type catalysts: recent advances. PURE APPL CHEM 2023. [DOI: 10.1515/pac-2022-1101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Abstract
The amide functional group is ubiquitous in living organisms, and is of particular importance in bioactive compounds and pharmaceuticals. Because of the prevalence and significance of the amide bond, considerable efforts have been invested throughout the years in developing new synthetic methodologies for its formation. Nevertheless, amide synthesis still largely relies on variants of the traditional condensation of carboxylic acids and amines, mediated by stoichiometric coupling reagents. This poses a sustainability challenge, since such reactions suffer from unfavorable atom and step economies, involve harmful chemicals and produce chemical waste. Hence, establishing sustainable approaches to amide synthesis is of great importance. Over the last two decades, we have developed homogeneous catalytic reactions for sustainable synthetic transformations, primarily based on transition metal complexes of pincer ligands. A considerable portion of these efforts has been devoted to acceptorless dehydrogenative coupling, including that of alcohols and amines through ruthenium-catalyzed reactions. These latter processes generate amides without resorting to coupling reagents and typically produce no waste, with their only byproduct being H2 gas, which is itself a valuable resource. In the present review, we chronicle our progress in this area of research since 2014. This includes the use of water and ammonia as amidation reagents, expanding the scope of amidation substrates and target amides, achieving milder reaction conditions, development of amidation-based liquid organic hydrogen carrier systems, and introduction of manganese-based catalysts.
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4
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Zhang W, Smillovich J, Albert V. Palladium Catalyzed Amidation of Phenyl Carboxylates and Anilines Using Aqueous Micellar Catalysis. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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5
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Abedelnour E, Ognier S, Zhang M, Schio L, Venier O, Cossy J, Tatoulian M. Plasma flow chemistry for direct N-acylation of amines by esters. Chem Commun (Camb) 2022; 58:7281-7284. [PMID: 35678143 DOI: 10.1039/d2cc01940j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The direct N-acylation of amines by esters in a microreactor is described using argon plasma, thereby producing amides in good to excellent yields.
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Affiliation(s)
- Elias Abedelnour
- Chimie Paristech, PSL University, CNRS, Institut de Recherche de Chimie Paris, UMR8247, 11 rue Pierre et Marie Curie, 75005 - Paris, France. .,Sanofi, Integrated Drug Discovery - IDD France, 1 Avenue Pierre Brossolette - Chilly Mazarin, France
| | - Stephanie Ognier
- Chimie Paristech, PSL University, CNRS, Institut de Recherche de Chimie Paris, UMR8247, 11 rue Pierre et Marie Curie, 75005 - Paris, France.
| | - Mengxue Zhang
- Chimie Paristech, PSL University, CNRS, Institut de Recherche de Chimie Paris, UMR8247, 11 rue Pierre et Marie Curie, 75005 - Paris, France.
| | - Laurent Schio
- Sanofi, Integrated Drug Discovery - IDD France, 1 Avenue Pierre Brossolette - Chilly Mazarin, France
| | - Olivier Venier
- Sanofi, Integrated Drug Discovery - IDD France, 1 Avenue Pierre Brossolette - Chilly Mazarin, France
| | - Janine Cossy
- Molecular, Macromolecular Chemistry and Materials (C3M), ESPCI Paris, PSL University, CNRS, 75005 - Paris, France.
| | - Michael Tatoulian
- Chimie Paristech, PSL University, CNRS, Institut de Recherche de Chimie Paris, UMR8247, 11 rue Pierre et Marie Curie, 75005 - Paris, France.
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6
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Das K, Waiba S, Jana A, Maji B. Manganese-catalyzed hydrogenation, dehydrogenation, and hydroelementation reactions. Chem Soc Rev 2022; 51:4386-4464. [PMID: 35583150 DOI: 10.1039/d2cs00093h] [Citation(s) in RCA: 57] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The emerging field of organometallic catalysis has shifted towards research on Earth-abundant transition metals due to their ready availability, economic advantage, and novel properties. In this case, manganese, the third most abundant transition-metal in the Earth's crust, has emerged as one of the leading competitors. Accordingly, a large number of molecularly-defined Mn-complexes has been synthesized and employed for hydrogenation, dehydrogenation, and hydroelementation reactions. In this regard, catalyst design is based on three pillars, namely, metal-ligand bifunctionality, ligand hemilability, and redox activity. Indeed, the developed catalysts not only differ in the number of chelating atoms they possess but also their working principles, thereby leading to different turnover numbers for product molecules. Hence, the critical assessment of molecularly defined manganese catalysts in terms of chelating atoms, reaction conditions, mechanistic pathway, and product turnover number is significant. Herein, we analyze manganese complexes for their catalytic activity, versatility to allow multiple transformations and their routes to convert substrates to target molecules. This article will also be helpful to get significant insight into ligand design, thereby aiding catalysis design.
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Affiliation(s)
- Kuhali Das
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, India.
| | - Satyadeep Waiba
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, India.
| | - Akash Jana
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, India.
| | - Biplab Maji
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, India.
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7
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Subaramanian M, Sivakumar G, Balaraman E. First-Row Transition-Metal Catalyzed Acceptorless Dehydrogenation and Related Reactions: A Personal Account. CHEM REC 2021; 21:3839-3871. [PMID: 34415674 DOI: 10.1002/tcr.202100165] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Revised: 07/17/2021] [Accepted: 08/04/2021] [Indexed: 12/17/2022]
Abstract
The development of sustainable catalytic protocols that circumvent the use of expensive and precious metal catalysts and avoid toxic reagents plays a crucial role in organic synthesis. Indeed, the direct employment of simple and abundantly available feedstock chemicals as the starting materials broadens their synthetic application in contemporary research. In particular, the transition metal-catalyzed diversification of alcohols with various nucleophilic partners to construct a wide range of building blocks is a powerful and highly desirable methodology. Moreover, the replacement of precious metal catalysts by non-precious and less toxic metals for selective transformations is one of the main goals and has been paid significant attention to in modern chemistry. In view of this, the first-row transition metal catalysts find extensive applications in various synthetic transformations such as catalytic hydrogenation, dehydrogenation, and related reactions. Herein, we have disclosed our recent developments on the base-metal catalysis such as Mn, Fe, Co, and Ni for the acceptorless dehydrogenation reactions and its application in the C-C and C-N bond formation via hydrogen auto-transfer (HA) and acceptorless dehydrogenation coupling (ADC) reactions. These HA/ADC protocols employ alcohol as alkylating agents and eliminate water and/or hydrogen gas as by-products, representing highly atom-efficient and environmentally benign reactions. Furthermore, diverse simple to complex organic molecules synthesis by C-C and C-N bond formation using feedstock alcohols are also overviewed. Overall, this account deals with the contribution and development of efficient and novel homogeneous as well as heterogeneous base-metal catalysts for sustainable chemical synthesis.
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Affiliation(s)
- Murugan Subaramanian
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati, 517507, India
| | - Ganesan Sivakumar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati, 517507, India
| | - Ekambaram Balaraman
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati, 517507, India
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8
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Muramatsu W, Hattori T, Yamamoto H. Amide bond formation: beyond the dilemma between activation and racemisation. Chem Commun (Camb) 2021; 57:6346-6359. [PMID: 34121110 DOI: 10.1039/d1cc01795k] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The development of methods for amide bond formation without recourse to typical condensation reagents has become an emerging research area and has been actively explored in the past quarter century. Inspired by the structure of vitamin B12, we have developed a metal-templated macrolactamisation that generates a new wave towards classical macrolactam synthesis. Further, distinct from the extensively used methods with condensation reagents or catalysts based on catalyst/reagent control our metal-catalysed methods based on substrate control can effectively address long-standing challenges such as racemisation in the field of peptide chemistry. In addition, the substrate-controlled strategy demonstrates the feasibility of "remote" peptide bond-forming reaction catalysed by a metal-ligand complex. Moreover, an originally designed hydrosilane/aminosilane system can avoid not only racemisation but also unnecessary waste production. This feature article documents our discovery and application of our original approaches in amide bond formation.
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Affiliation(s)
- Wataru Muramatsu
- Molecular Catalyst Research Center, Chubu University, 1200 Matsumoto-cho, Kasugai, Aichi 487-8501, Japan.
| | - Tomohiro Hattori
- Molecular Catalyst Research Center, Chubu University, 1200 Matsumoto-cho, Kasugai, Aichi 487-8501, Japan.
| | - Hisashi Yamamoto
- Molecular Catalyst Research Center, Chubu University, 1200 Matsumoto-cho, Kasugai, Aichi 487-8501, Japan.
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9
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Kar S, Xie Y, Zhou QQ, Diskin-Posner Y, Ben-David Y, Milstein D. Near-Ambient-Temperature Dehydrogenative Synthesis of the Amide Bond: Mechanistic Insight and Applications. ACS Catal 2021; 11:7383-7393. [PMID: 34168903 PMCID: PMC8218306 DOI: 10.1021/acscatal.1c00728] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 05/10/2021] [Indexed: 01/03/2023]
Abstract
The current existing methods for the amide bond synthesis via acceptorless dehydrogenative coupling of amines and alcohols all require high reaction temperatures for effective catalysis, typically involving reflux in toluene, limiting their potential practical applications. Herein, we report a system for this reaction that proceeds under mild conditions (reflux in diethyl ether, boiling point 34.6 °C) using ruthenium PNNH complexes. The low-temperature activity stems from the ability of Ru-PNNH complexes to activate alcohol and hemiaminals at near-ambient temperatures through the assistance of the terminal N-H proton. Mechanistic studies reveal the presence of an unexpected aldehyde-bound ruthenium species during the reaction, which is also the catalytic resting state. We further utilize the low-temperature activity to synthesize several simple amide bond-containing commercially available pharmaceutical drugs from the corresponding amines and alcohols via the dehydrogenative coupling method.
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Affiliation(s)
- Sayan Kar
- Department
of Molecular Chemistry and Materials Science, The Weizmann Institute of Science, Rehovot 76100, Israel
| | - Yinjun Xie
- Department
of Molecular Chemistry and Materials Science, The Weizmann Institute of Science, Rehovot 76100, Israel
| | - Quan Quan Zhou
- Department
of Molecular Chemistry and Materials Science, The Weizmann Institute of Science, Rehovot 76100, Israel
| | - Yael Diskin-Posner
- Department
of Chemical Research Support, The Weizmann
Institute of Science, Rehovot 76100, Israel
| | - Yehoshoa Ben-David
- Department
of Molecular Chemistry and Materials Science, The Weizmann Institute of Science, Rehovot 76100, Israel
| | - David Milstein
- Department
of Molecular Chemistry and Materials Science, The Weizmann Institute of Science, Rehovot 76100, Israel
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10
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11
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12
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Rana J, Nagarasu P, Subaramanian M, Mondal A, Madhu V, Balaraman E. Manganese-Catalyzed C(α)-Alkylation of Oxindoles with Secondary Alcohols via Borrowing Hydrogen. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Jagannath Rana
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati 517507, India
| | - Palaniyappan Nagarasu
- Department of Applied Chemistry, Karunya Institute of Technology and Science (Deemed to be University), Coimbatore 641114, Tamil Nadu, India
| | - Murugan Subaramanian
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati 517507, India
| | - Akash Mondal
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati 517507, India
| | - Vedichi Madhu
- Department of Applied Chemistry, Karunya Institute of Technology and Science (Deemed to be University), Coimbatore 641114, Tamil Nadu, India
| | - Ekambaram Balaraman
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati 517507, India
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13
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Fu Z, Wang X, Tao S, Bu Q, Wei D, Liu N. Manganese Catalyzed Direct Amidation of Esters with Amines. J Org Chem 2021; 86:2339-2358. [DOI: 10.1021/acs.joc.0c02478] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Zhengqiang Fu
- School of Chemistry and Chemical Engineering, Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, North Fourth Road, Shihezi, Xinjiang 832003, People’s Republic of China
| | - Xinghua Wang
- College of Chemistry, Center of Computational Chemistry, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
| | - Sheng Tao
- School of Chemistry and Chemical Engineering, Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, North Fourth Road, Shihezi, Xinjiang 832003, People’s Republic of China
| | - Qingqing Bu
- School of Chemistry and Chemical Engineering, Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, North Fourth Road, Shihezi, Xinjiang 832003, People’s Republic of China
| | - Donghui Wei
- College of Chemistry, Center of Computational Chemistry, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
| | - Ning Liu
- School of Chemistry and Chemical Engineering, Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, North Fourth Road, Shihezi, Xinjiang 832003, People’s Republic of China
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14
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Uludag N, Duran E. A New Approach to the Total Synthesis of 20-Deethyltubifolidine and an Entry to the Azocino[4,3-b]indoles. ORG PREP PROCED INT 2020. [DOI: 10.1080/00304948.2020.1780886] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Nesimi Uludag
- Department of Chemistry, Faculty of Sciences and Arts, Namık Kemal University, Tekirdag, Turkey
| | - Ebru Duran
- Department of Chemistry, Faculty of Sciences and Arts, Namık Kemal University, Tekirdag, Turkey
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15
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Mondal A, Sahoo MK, Subaramanian M, Balaraman E. Manganese(I)-Catalyzed Sustainable Synthesis of Quinoxaline and Quinazoline Derivatives with the Liberation of Dihydrogen. J Org Chem 2020; 85:7181-7191. [DOI: 10.1021/acs.joc.0c00561] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Akash Mondal
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati 517507, India
| | - Manoj Kumar Sahoo
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati 517507, India
| | - Murugan Subaramanian
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati 517507, India
| | - Ekambaram Balaraman
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati 517507, India
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16
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Homberg A, Hrdina R, Vishe M, Guénée L, Lacour J. Stereoselective deconjugation of macrocyclic α,β-unsaturated esters by sequential amidation and olefin transposition: application to enantioselective phase-transfer catalysis. Org Biomol Chem 2019; 17:6905-6910. [PMID: 31270519 DOI: 10.1039/c9ob01355e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The stereoselective synthesis of chiral macrocycles bearing two aliphatic amide functional groups is reported. After the amidation mediated by TBD, a guanidine derivative, the olefin transposition step is performed with a slight excess of t-BuOK. The products are afforded in moderate to good combined yields (up to 59%) and with an excellent syn diastereoselectivity (dr > 49 : 1). Introducing enantiopure α-branched substituents was possible and it resulted in mixtures of diastereomers, which could be tested as phase-transfer catalysts using the formation of a phenylalanine analog as a test reaction (up to 43% ee). A clear matched-mismatched situation was observed in the two diastereomeric series.
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Affiliation(s)
- Alexandre Homberg
- Department of Organic Chemistry, University of Geneva, Quai Ernest Ansermet 30, 1211 Geneva 4, Switzerland.
| | - Radim Hrdina
- Department of Organic Chemistry, University of Geneva, Quai Ernest Ansermet 30, 1211 Geneva 4, Switzerland.
| | - Mahesh Vishe
- Department of Organic Chemistry, University of Geneva, Quai Ernest Ansermet 30, 1211 Geneva 4, Switzerland.
| | - Laure Guénée
- Laboratory of Crystallography, University of Geneva, Quai Ernest Ansermet 24, 1211 Geneva 4, Switzerland
| | - Jérôme Lacour
- Department of Organic Chemistry, University of Geneva, Quai Ernest Ansermet 30, 1211 Geneva 4, Switzerland.
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17
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Monga A, Pandey AP, Sharma A. Visible‐Light Mediated Photooxidative Synthesis of α‐Keto Amides. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900279] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Aparna Monga
- Department of ChemistryIndian Institute of Technology Roorkee Roorkee- 247667 India
| | - Amar Prakash Pandey
- Department of ChemistryIndian Institute of Technology Roorkee Roorkee- 247667 India
| | - Anuj Sharma
- Department of ChemistryIndian Institute of Technology Roorkee Roorkee- 247667 India
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18
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Homberg L, Roller A, Hultzsch KC. A Highly Active PN3 Manganese Pincer Complex Performing N-Alkylation of Amines under Mild Conditions. Org Lett 2019; 21:3142-3147. [DOI: 10.1021/acs.orglett.9b00832] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Leonard Homberg
- University of Vienna, Faculty of Chemistry, Institute of Chemical Catalysis, Währinger Straße 38, 1090 Vienna, Austria
| | - Alexander Roller
- University of Vienna, Faculty of Chemistry, X-ray Structure Analysis Center, Währinger Straße 42, 1090 Vienna, Austria
| | - Kai C. Hultzsch
- University of Vienna, Faculty of Chemistry, Institute of Chemical Catalysis, Währinger Straße 38, 1090 Vienna, Austria
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19
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Chen C, Liu W, Liu B, Zhou P, Tan H. Acylation of Arylamines with Triethylamine Derivatives in Combination with
tert
‐Butyl Hydroperoxide. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900119] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Cui Chen
- College of ChemistryGuangdong University of Petrochemical Technology 2 Guandu Road Maoming 525000 P. R. China
| | - Weibing. Liu
- College of ChemistryGuangdong University of Petrochemical Technology 2 Guandu Road Maoming 525000 P. R. China
| | - Bifu. Liu
- School of Chemistry and Material EngineeringHuizhou University Huizhou 516007 China
| | - Peng Zhou
- College of ChemistryGuangdong University of Petrochemical Technology 2 Guandu Road Maoming 525000 P. R. China
| | - Hua Tan
- College of ChemistryGuangdong University of Petrochemical Technology 2 Guandu Road Maoming 525000 P. R. China
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20
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Barman MK, Das K, Maji B. Selective Hydroboration of Carboxylic Acids with a Homogeneous Manganese Catalyst. J Org Chem 2019; 84:1570-1579. [PMID: 30632374 DOI: 10.1021/acs.joc.8b03108] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Catalytic reduction of carboxylic acid to the corresponding alcohol is a challenging task of great importance for the production of a variety of value-added chemicals. Herein, a manganese-catalyzed chemoselective hydroboration of carboxylic acids has been developed with a high turnover number (>99 000) and turnover frequency (>2000 h-1) at 25 °C. This method displayed tolerance of electronically and sterically differentiated substrates with high chemoselectivity. Importantly, aliphatic long-chain fatty acids, including biomass-derived compounds, can efficiently be reduced. Mechanistic studies revealed that the reaction occurs through the formation of active manganese-hydride species via an insertion and bond metathesis type mechanism.
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Affiliation(s)
- Milan K Barman
- Department of Chemical Sciences , Indian Institute of Science Education and Research Kolkata , Mohanpur 741246 , India
| | - Kuhali Das
- Department of Chemical Sciences , Indian Institute of Science Education and Research Kolkata , Mohanpur 741246 , India
| | - Biplab Maji
- Department of Chemical Sciences , Indian Institute of Science Education and Research Kolkata , Mohanpur 741246 , India
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21
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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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Waiba S, Barman MK, Maji B. Manganese-Catalyzed Acceptorless Dehydrogenative Coupling of Alcohols With Sulfones: A Tool To Access Highly Substituted Vinyl Sulfones. J Org Chem 2018; 84:973-982. [DOI: 10.1021/acs.joc.8b02911] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Satyadeep Waiba
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, India
| | - Milan K. Barman
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, India
| | - Biplab Maji
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, India
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Affiliation(s)
- Akash Jana
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, India
| | - C. Bal Reddy
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, India
| | - Biplab Maji
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, India
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