1
|
Qin GQ, Wang J, Cao XR, Chu XQ, Zhou X, Rao W, Zhai LX, Miao C, Shen ZL. Nickel-Catalyzed Reductive Amidation of Aryl Fluorosulfates with Isocyanates: Synthesis of Amides via C-O Bond Cleavage. J Org Chem 2024; 89:13735-13743. [PMID: 39213645 DOI: 10.1021/acs.joc.4c01399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/04/2024]
Abstract
With the assistance of nickel as catalyst, 2,2'-bipyridine (bpy) as ligand, and manganese as reducing metal, the reductive amidation of isocyanates with readily accessible aryl fluorosulfates could be successfully accomplished. The reactions proceeded effectively via C-O bond activation in DMF at room temperature, enabling the facile synthesis of a range of structurally diverse amides in moderate to high yields with broad functionality compatibility. In addition, the synthetic usefulness of the method was further demonstrated by applying the reaction in scale-up synthesis and the late-stage functionalization of complex molecules with biological activities.
Collapse
Affiliation(s)
- Gan-Qi Qin
- Technical Institute of Fluorochemistry (TIF), School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Jiao Wang
- Technical Institute of Fluorochemistry (TIF), School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Xu-Rong Cao
- Technical Institute of Fluorochemistry (TIF), School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Xue-Qiang Chu
- Technical Institute of Fluorochemistry (TIF), School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Xiaocong Zhou
- College of Biological, Chemical Science and Engineering, Jiaxing University, 118 Jiahang Road, Jiaxing 314001, China
| | - Weidong Rao
- Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-Forest Biomass, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Li-Xin Zhai
- Technical Institute of Fluorochemistry (TIF), School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Chengping Miao
- College of Biological, Chemical Science and Engineering, Jiaxing University, 118 Jiahang Road, Jiaxing 314001, China
| | - Zhi-Liang Shen
- Technical Institute of Fluorochemistry (TIF), School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| |
Collapse
|
2
|
Koshizuka M, Takahashi N, Shimada N. Organoboron catalysis for direct amide/peptide bond formation. Chem Commun (Camb) 2024. [PMID: 39196535 DOI: 10.1039/d4cc02994a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/29/2024]
Abstract
Amides and peptides are ubiquitous functional groups found in several natural and artificial materials, and they are essential for the advancement of life and material sciences. In particular, their relevance in clinical medicine and drug discovery has increased in recent years. Dehydrative condensation of readily available carboxylic acids with amines is the most "direct" method for amide synthesis; however, this methodology generally requires a stoichiometric amount of condensation agent (coupling reagent). Catalytic direct dehydrative amidation has become an "ideal" methodology for synthesizing amides from the perspective of green chemistry, with water as the only byproduct in principle, high atom efficiency, environmentally friendly, energy saving, and safety. Conversely, organoboron compounds, such as boronic acids, which are widely used in various industries as coupling reagents for Suzuki-Miyaura cross-coupling reactions or pharmaceutical structures, are environmentally friendly molecules that have low toxicity and are easy to handle. Based on the chemical properties of organoboron compounds, they have potential Lewis acidity and the ability to form reversible covalent bonds with dehydration, making them attractive as catalysts. This review explores studies on the development of direct dehydrative amide/peptide bond formation reactions from carboxylic acids using organoboron catalysis, classifying them based on chemical bonding and catalysis over approximately 25 years, from the early developmental days to 2023.
Collapse
Affiliation(s)
- Masayoshi Koshizuka
- Laboratory of Organic Chemistry for Drug Development and Medical Research Laboratories, Department of Pharmaceutical Sciences, Kitasato University, 5-9-1 Shirokane, Minatao-ku, Tokyo 108-8641, Japan
| | - Naoya Takahashi
- Laboratory of Organic Chemistry for Drug Development and Medical Research Laboratories, Department of Pharmaceutical Sciences, Kitasato University, 5-9-1 Shirokane, Minatao-ku, Tokyo 108-8641, Japan
| | - Naoyuki Shimada
- Laboratory of Organic Chemistry for Molecular Transformations, Department of Chemistry and the Institute of Natural Sciences, Nihon University, 3-25-40 Sakurajosui, Setagaya-ku, Tokyo 156-8550, Japan.
| |
Collapse
|
3
|
Gui QW, Ying S, Liu X, Wang J, Xiao X, Liu Z, Wang X, Shang Y, Li Q. BF 3·OEt 2-mediated transamidation of unprotected primary amides under solvent-free conditions. Org Biomol Chem 2024; 22:6605-6611. [PMID: 39087323 DOI: 10.1039/d4ob00875h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/02/2024]
Abstract
A BF3·OEt2-mediated transamidation between unactivated amides and amines is reported, enabling access to diverse secondary and tertiary amides under transition-metal-free and solvent-free conditions. The operationally simple procedure provides a novel manifold for converting amide-amide bonds with excellent chemoselectivity. In particular, a series of amides including challenging thioamides enable direct transamidation to products with modest to excellent yields. Meanwhile, additional experiments were conducted to elucidate the mechanism of this transformation, and a plausible mechanism was proposed based on the results and related literature.
Collapse
Affiliation(s)
- Qing-Wen Gui
- College of Chemistry and Materials Science, Hunan Agricultural University, Changsha, Hunan 410128, People's Republic of China.
| | - Shengneng Ying
- College of Chemistry and Materials Science, Hunan Agricultural University, Changsha, Hunan 410128, People's Republic of China.
| | - Xin Liu
- College of Chemistry and Materials Science, Hunan Agricultural University, Changsha, Hunan 410128, People's Republic of China.
| | - Jianfang Wang
- College of Science, National University of Defense Technology, Changsha 410128, People's Republic of China
| | - Xuliang Xiao
- College of Chemistry and Materials Science, Hunan Agricultural University, Changsha, Hunan 410128, People's Republic of China.
| | - Zhuoliang Liu
- College of Science, National University of Defense Technology, Changsha 410128, People's Republic of China
| | - Xia Wang
- College of Chemistry and Materials Science, Hunan Agricultural University, Changsha, Hunan 410128, People's Republic of China.
| | - Yanxue Shang
- College of Chemistry and Materials Science, Hunan Agricultural University, Changsha, Hunan 410128, People's Republic of China.
| | - Qiang Li
- College of Agronomy, Hunan Agricultural University, Changsha 410128, People's Republic of China
| |
Collapse
|
4
|
Meinert H, Oehlschläger F, Cziegler C, Rockstroh J, Marzuoli I, Bisagni S, Lalk M, Bayer T, Iding H, Bornscheuer UT. Efficient Enzymatic Synthesis of Carbamates in Water Using Promiscuous Esterases/Acyltransferases. Angew Chem Int Ed Engl 2024; 63:e202405152. [PMID: 38739413 DOI: 10.1002/anie.202405152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 05/07/2024] [Accepted: 05/10/2024] [Indexed: 05/14/2024]
Abstract
Biocatalysis provides an attractive approach to facilitate synthetic reactions in aqueous media. Motivated by the discovery of promiscuous aminolysis activity of esterases, we exploited the esterase from Pyrobaculum calidifontis VA1 (PestE) for the synthesis of carbamates from different aliphatic, aromatic, and arylaliphatic amines and a set of carbonates such as dimethyl-, dibenzyl-, or diallyl carbonate. Thus, aniline and benzylamine derivatives, aliphatic and even secondary amines could be efficiently converted into the corresponding benzyloxycarbonyl (Cbz)- or allyloxycarbonyl (Alloc)-protected products in bulk water, with (isolated) yields of up to 99 %.
Collapse
Affiliation(s)
- Hannes Meinert
- Dept. of Biotechnology & Enzyme Catalysis, Institute of Biochemistry, University of Greifswald, Felix-Hausdorff-Str. 4, 17487, Greifswald, Germany
| | - Florian Oehlschläger
- Dept. of Biotechnology & Enzyme Catalysis, Institute of Biochemistry, University of Greifswald, Felix-Hausdorff-Str. 4, 17487, Greifswald, Germany
| | - Clemens Cziegler
- Dept. of Biotechnology & Enzyme Catalysis, Institute of Biochemistry, University of Greifswald, Felix-Hausdorff-Str. 4, 17487, Greifswald, Germany
| | - Jan Rockstroh
- Dept. of Cellular Biochemistry and Metabolomics, Institute of Biochemistry, University of Greifswald, Felix-Hausdorff-Str. 4, 17487, Greifswald, Germany
| | - Irene Marzuoli
- Process Chemistry & Catalysis, F. Hoffmann-La Roche Ltd., Grenzacher Str. 124, 4070, Basel, Switzerland
| | - Serena Bisagni
- Process Chemistry & Catalysis, F. Hoffmann-La Roche Ltd., Grenzacher Str. 124, 4070, Basel, Switzerland
| | - Michael Lalk
- Dept. of Cellular Biochemistry and Metabolomics, Institute of Biochemistry, University of Greifswald, Felix-Hausdorff-Str. 4, 17487, Greifswald, Germany
| | - Thomas Bayer
- Dept. of Biotechnology & Enzyme Catalysis, Institute of Biochemistry, University of Greifswald, Felix-Hausdorff-Str. 4, 17487, Greifswald, Germany
| | - Hans Iding
- Process Chemistry & Catalysis, F. Hoffmann-La Roche Ltd., Grenzacher Str. 124, 4070, Basel, Switzerland
| | - Uwe T Bornscheuer
- Dept. of Biotechnology & Enzyme Catalysis, Institute of Biochemistry, University of Greifswald, Felix-Hausdorff-Str. 4, 17487, Greifswald, Germany
| |
Collapse
|
5
|
Ryoo JY, Han MS. Development of boronic acid catalysts for direct amidation of aromatic carboxylic acids using fluorescence-based screening. Org Biomol Chem 2024. [PMID: 39012343 DOI: 10.1039/d4ob00576g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/17/2024]
Abstract
Direct amidation of carboxylic acids with amines holds significant importance; therefore, catalytic processes involving boronic acids have undergone extensive investigation. However, studies focused on the amidation of aromatic carboxylic acids remain limited. In this study, we introduce a fluorescence-based screening methodology employing an anthracene derivative probe, facilitating the rapid evaluation of various amidation catalysts. Using this approach, boronic acids were evaluated for their catalytic potential. Our findings reveal that 2-hydroxyphenylboronic acid (C7), previously deemed inefficient for aliphatic acids, effectively catalyzes the amidation of aromatic acids. The catalysts identified through this method consistently achieved high yields, reaching up to 98% across a broad spectrum of substrates.
Collapse
Affiliation(s)
- Jeong Yup Ryoo
- Department of Chemistry, Gwangju Institute of Science and Technology (GIST), 123, Cheomdangwagi-ro, Buk-gu, Gwangju, 61005, Republic of Korea.
| | - Min Su Han
- Department of Chemistry, Gwangju Institute of Science and Technology (GIST), 123, Cheomdangwagi-ro, Buk-gu, Gwangju, 61005, Republic of Korea.
| |
Collapse
|
6
|
Wang L, Li Z, Zhou Y, Zhu J. Nickel-Catalyzed Deoxygenative Amidation of Alcohols with Carbamoyl Chlorides. Org Lett 2024; 26:2297-2302. [PMID: 38465891 DOI: 10.1021/acs.orglett.4c00519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2024]
Abstract
We report a deoxygenative amidation reaction of alcohols with carbamoyl chlorides to afford amides through nickel-photoredox dual catalysis. Good to excellent yields can be obtained even for diverse complex sugar and steroid derivatives. The reaction is scalable, and the synthetic utility of the reaction was demonstrated by the homologation of alcohols to deliver several important γ-amino alcohols and a synthetically challenging bioactive compound intermediate.
Collapse
Affiliation(s)
- Lele Wang
- College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan 430072, P. R. China
| | - Zhongxian Li
- College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan 430072, P. R. China
| | - Yang Zhou
- College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan 430072, P. R. China
| | - Jun Zhu
- College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan 430072, P. R. China
| |
Collapse
|
7
|
Tan Y, Ni P, Jiang WJ, Fu Y, Ding Q. Direct Transamidation of Thioamides with Amines via Acetophenone-Promoted Enamine Catalysis under Metal-Free Conditions. J Org Chem 2024; 89:2939-2950. [PMID: 38381084 DOI: 10.1021/acs.joc.3c02352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
Abstract
Herein, we developed a highly selective, efficient, and simple method for direct transamidation of thioamides with amines, promoted by commercially available acetophenone under metal-/solvent-free conditions. The reaction tolerated a wide range of functional groups and substrates, including single- or double-thioamides, benzylamines, or alkyl/cycloalkyl-substituted aliphatic amines. The present protocol can be applied to gram-scale in good yields. In addition, the Pt-/Ni-complexes of double-transamidation products were obtained in good to excellent yields. The investigation of photophysical properties indicated that the fluorescence spectra of Pt-complexes showed an emission band centered at 550-750 nm and exhibited red fluorescence when irradiated by a UV lamp (365 nm).
Collapse
Affiliation(s)
- Yuxing Tan
- Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Key Laboratory for Green Chemistry of Jiangxi Province, Jiangxi Normal University, Nanchang 330022 Jiangxi, China
- Key Laboratory of Functional Metal-Organic Compounds of Hunan Province, College of Chemistry and Materials Science, Hengyang Normal University, Hengyang 421008, Hunan, PR China
| | - Penghui Ni
- Key Laboratory of Functional Metal-Organic Compounds of Hunan Province, College of Chemistry and Materials Science, Hengyang Normal University, Hengyang 421008, Hunan, PR China
| | - Wu-Jiu Jiang
- Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Key Laboratory for Green Chemistry of Jiangxi Province, Jiangxi Normal University, Nanchang 330022 Jiangxi, China
- Key Laboratory of Functional Metal-Organic Compounds of Hunan Province, College of Chemistry and Materials Science, Hengyang Normal University, Hengyang 421008, Hunan, PR China
| | - Yang Fu
- Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Key Laboratory for Green Chemistry of Jiangxi Province, Jiangxi Normal University, Nanchang 330022 Jiangxi, China
| | - Qiuping Ding
- Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Key Laboratory for Green Chemistry of Jiangxi Province, Jiangxi Normal University, Nanchang 330022 Jiangxi, China
| |
Collapse
|
8
|
Wang QD, Liu X, Zheng YW, Wu YS, Zhou X, Yang JM, Shen ZL. Iron-Mediated Reductive Amidation of Triazine Esters with Nitroarenes. Org Lett 2024; 26:416-420. [PMID: 38160397 DOI: 10.1021/acs.orglett.3c04180] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
A reductive amidation of triazine esters with nitroarenes by using cheap iron as a reducing metal in the presence of TMSCl in DMF was developed. The reactions proceeded efficiently under transition metal-free conditions to give the corresponding amides in moderate to good yields with good functional group compatibility. Preliminary mechanistic investigations indicated that nitrosobenzene, N-phenyl hydroxylamine, azoxybenzene, azobenzene, aniline, and N-arylformamide possibly served as the intermediates of the reaction.
Collapse
Affiliation(s)
- Qing-Dong Wang
- School of Pharmacy, Yancheng Teachers University, Yancheng 224007, China
| | - Xiang Liu
- College of Biological, Chemical Science and Engineering, Jiaxing University, 118 Jiahang Road, Jiaxing 314001, China
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Ya-Wen Zheng
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Yuan-Shuai Wu
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Xiaocong Zhou
- College of Biological, Chemical Science and Engineering, Jiaxing University, 118 Jiahang Road, Jiaxing 314001, China
| | - Jin-Ming Yang
- School of Pharmacy, Yancheng Teachers University, Yancheng 224007, China
| | - Zhi-Liang Shen
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| |
Collapse
|
9
|
Rajamanickam KR, Lee S. Ring Opening of N-Acyl Lactams Using Nickel-Catalyzed Transamidation. J Org Chem 2024. [PMID: 38173413 DOI: 10.1021/acs.joc.3c02486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
We successfully developed a nickel-catalyzed transamidation method for the ring opening of N-acyl lactams. The method involves a reaction between N-benzoylpyrrolidin-2-one derivatives and aniline derivatives, with Ni(PPh3)2Cl2 serving as the catalyst, 2,2'-bipyridine as the ligand, and manganese as the reducing agent. This reaction led to the formation of ring-opening-amidated products in good yields. Notably, the method exhibited excellent efficiency for producing the corresponding ring-opening transamidation products for various ring sizes, including four-, five-, six-, seven-, and eight-membered ring lactams.
Collapse
Affiliation(s)
| | - Sunwoo Lee
- Department of Chemistry, Chonnam National University, Gwangju 61186, Republic of Korea
| |
Collapse
|
10
|
Yang S, Zeng H, Luo M, Zeng X. Reductive transamidation of tertiary amides with nitroarenes enabled by magnesium and chlorosilane. Org Biomol Chem 2023; 21:9337-9340. [PMID: 37987529 DOI: 10.1039/d3ob01728a] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
Reported here is the reductive transamidation of tertiary amides with nitroarenes promoted by main group metal magnesium and chlorosilane. The reaction uses commercially available and air-stable nitroarenes as nitrogen sources, so it can occur under transition-metal- and ligand-free conditions, thus providing a step-economic and cost-effective strategy for forming centrally important secondary amides. Several biologically interesting amide motifs are readily accessible by the Mg-promoted reductive transamidation.
Collapse
Affiliation(s)
- Shangru Yang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China.
| | - Haohao Zeng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China.
| | - Meiming Luo
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China.
| | - Xiaoming Zeng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China.
| |
Collapse
|
11
|
Kumar Chouhan K, Nad P, Mukherjee A. Dual Role of TiO(acac) 2 as a Reagent and an Activator/Catalyst: A Study on the Solvent Dependent Product Formation. Chem Asian J 2023; 18:e202300738. [PMID: 37782026 DOI: 10.1002/asia.202300738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 09/30/2023] [Accepted: 10/02/2023] [Indexed: 10/03/2023]
Abstract
The dual operation of a chemical species in synthetic chemistry is an intriguing and relatively unexplored phenomenon. The application of such a species is expected to reduce the use of multiple reaction partners and catalysts/activators. Herein, we report a simple and easy-to-use protocol for the twin application of TiO(acac)2 , as a reagent and an activator to synthesize β-enamino ketones with amines in acetonitrile. The same early transition metal precursor when employed in N,N-dimethylformamide with the amines, resulted in the formation of the substituted amides. Both reactions were explored with various substrates to check the viability of the present protocol. Moreover, experimental studies were conducted to understand the mechanism of both reactions.
Collapse
Affiliation(s)
- Kishor Kumar Chouhan
- Department of Chemistry, Indian Institute of Technology Bhilai, GEC Campus, Sejbahar, Raipur, 492015, Chhattisgarh, India
| | - Pinaki Nad
- Department of Chemistry, Indian Institute of Technology Bhilai, GEC Campus, Sejbahar, Raipur, 492015, Chhattisgarh, India
| | - Arup Mukherjee
- Department of Chemistry, Indian Institute of Technology Bhilai, GEC Campus, Sejbahar, Raipur, 492015, Chhattisgarh, India
| |
Collapse
|
12
|
Lai EY, Yuan B, Ackermann L, Johansson MJ. Ruthenium-Catalyzed Aminocarbonylation with Isocyanates Through Weak Coordinating Groups. Chemistry 2023; 29:e202302023. [PMID: 37737512 DOI: 10.1002/chem.202302023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Indexed: 09/23/2023]
Abstract
Introducing amide functional groups under mild conditions has growing importance owing to the prevalence of such moiety in biologically active molecules. Herein, we disclose a mild protocol for the directed ruthenium-catalyzed C-H aminocarbonylation with isocyanates as the amidating agents developed through high-throughput experimentation (HTE). The redox-neutral and base-free reaction is guided by weakly Lewis basic functional groups, including anilides, lactams and carbamates to access anthranilamide derivatives. The synthetic utility of this transformation is reflected by large-scale synthesis and late-stage functionalization.
Collapse
Affiliation(s)
- Elisa Y Lai
- Medicinal Chemistry, Research and Early Development, Cardiovascular, Renal and Metabolism (CVRM), Biopharmaceuticals R&D, AstraZeneca, Gothenburg, Pepparedsleden1, 431 50, Mölndal, Sweden
- Institut für Organische und Biomolekulare Chemie and, Wöhler Research Institute for Sustainable Chemistry (WISCh), Georg-August-Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany
| | - Binbin Yuan
- Institut für Organische und Biomolekulare Chemie and, Wöhler Research Institute for Sustainable Chemistry (WISCh), Georg-August-Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie and, Wöhler Research Institute for Sustainable Chemistry (WISCh), Georg-August-Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany
- German Center for Cardiovascular Research (DZHK), Potsdamer Strasse 58, 10785, Berlin, Germany
| | - Magnus J Johansson
- Medicinal Chemistry, Research and Early Development, Cardiovascular, Renal and Metabolism (CVRM), Biopharmaceuticals R&D, AstraZeneca, Gothenburg, Pepparedsleden1, 431 50, Mölndal, Sweden
- Department of Organic Chemistry, Stockholm University, 106 91, Stockholm, Sweden
| |
Collapse
|
13
|
Mikhael M, Alektiar SN, Yeung CS, Wickens ZK. Translating Planar Heterocycles into Three-Dimensional Analogs by Photoinduced Hydrocarboxylation. Angew Chem Int Ed Engl 2023; 62:e202303264. [PMID: 37199340 PMCID: PMC10524292 DOI: 10.1002/anie.202303264] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 05/12/2023] [Accepted: 05/15/2023] [Indexed: 05/19/2023]
Abstract
The rapid preparation of complex three-dimensional (3D) heterocyclic scaffolds is a key challenge in modern medicinal chemistry. Despite the increased probability of clinical success for small molecule therapeutic candidates with increased 3D complexity, new drug targets remain dominated by flat molecules due to the abundance of coupling reactions available for their construction. In principle, heteroarene hydrofunctionalization reactions offer an opportunity to transform readily accessible planar molecules into more three-dimensionally complex analogs through the introduction of a single molecular vector. Unfortunately, dearomative hydrofunctionalization reactions remain limited. Herein, we report a new strategy to enable the dearomative hydrocarboxylation of indoles and related heterocycles. This reaction represents a rare example of a heteroarene hydrofunctionalization that meets the numerous requirements for broad implementation in drug discovery. The transformation is highly chemoselective, broad in scope, operationally simple, and readily amenable to high-throughput experimentation (HTE). Accordingly, this process will allow existing libraries of heteroaromatic compounds to be translated into diverse 3D analogs and enable exploration of new classes of medicinally relevant molecules.
Collapse
Affiliation(s)
- Myriam Mikhael
- Discovery Chemistry, Merck & Co., Inc., 33 Avenue Louis Pasteur, Boston, MA 02115, United States
| | - Sara N. Alektiar
- Department of Chemistry, University of Wisconsin-Madison; Madison, Wisconsin, 53706, United States
| | - Charles S. Yeung
- Discovery Chemistry, Merck & Co., Inc., 33 Avenue Louis Pasteur, Boston, MA 02115, United States
| | - Zachary K. Wickens
- Department of Chemistry, University of Wisconsin-Madison; Madison, Wisconsin, 53706, United States
| |
Collapse
|
14
|
Ghafuri H, Hanifehnejad P, Rashidizadeh A, Tajik Z, Dogari H. Synthesis and characterization of nanocatalyst Cu 2+/mesoporous carbon for amidation reactions of alcohols. Sci Rep 2023; 13:10133. [PMID: 37349381 DOI: 10.1038/s41598-023-36521-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 06/05/2023] [Indexed: 06/24/2023] Open
Abstract
In this research, mesoporous carbon (MC) with high efficiency (0.65 g yield from 1.0 g MCM-41 and 1.25 g sucrose) was successfully prepared by adding carbon precursor (sucrose) in a single step with ultrasonic waves, which reduces time and energy cost. Then, the Cu2+/Mesoporous carbon nanocatalyst (Cu2+/MC) was synthesized by adding Cu(NO3)2 in a single step and applied as a catalyst in amidation reactions of alcohols. Also, Cu2+/MC was characterized using different spectroscopic methods and techniques, including Fourier transform infrared spectroscopy (FT-IR), Field Emission Scanning Electron Microscopy (FE-SEM), N2 adsorption analysis (BET), X-ray diffraction analysis (XRD), Energy Dispersive X-ray (EDX), and Thermogravimetric Analysis (TGA). Moreover, to show the catalytic merits of Cu2+/MC, various primary and secondary amines and ammonium salts were applied in the amidation of alcohols. Easy synthesis method, recyclability, excellent yields (80-93%), and simple work-up are some noticeable strengths of using Cu2+/MC as a catalyst in this reaction.
Collapse
Affiliation(s)
- Hossein Ghafuri
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, 16846‑13114, Iran.
| | - Peyman Hanifehnejad
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, 16846‑13114, Iran
| | - Afsaneh Rashidizadeh
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, 16846‑13114, Iran
| | - Zeinab Tajik
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, 16846‑13114, Iran
| | - Hanieh Dogari
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, 16846‑13114, Iran
| |
Collapse
|
15
|
Fridianto KT, Wen YP, Lo LC, Lam Y. Development of fluorous boronic acid catalysts integrated with sulfur for enhanced amidation efficiency. RSC Adv 2023; 13:17420-17426. [PMID: 37304775 PMCID: PMC10251487 DOI: 10.1039/d3ra03300g] [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: 05/18/2023] [Accepted: 06/01/2023] [Indexed: 06/13/2023] Open
Abstract
A thermally stable, fluorous sulfur-containing boronic acid catalyst has been developed and was shown to efficiently promote dehydrative condensation between carboxylic acids and amines under environmentally friendly conditions. The methodology can be applied to aliphatic, aromatic and heteroaromatic acids as well as primary and secondary amines. N-Boc protected amino acids were also successfully coupled in good yields with very little racemization. The catalyst could be reused four times with no significant loss of activity.
Collapse
Affiliation(s)
- Kevin Timothy Fridianto
- Department of Chemistry, National University of Singapore 3 Science Drive 3 Singapore 117543
| | - Ya-Ping Wen
- Department of Chemistry, National Taiwan University No. 1, Sec. 4 Roosevelt Road Taipei 106 Taiwan
| | - Lee-Chiang Lo
- Department of Chemistry, National Taiwan University No. 1, Sec. 4 Roosevelt Road Taipei 106 Taiwan
| | - Yulin Lam
- Department of Chemistry, National University of Singapore 3 Science Drive 3 Singapore 117543
| |
Collapse
|
16
|
Hattori T, Yamamoto H. Trimethylaluminum-mediated one-pot peptide elongation. Chem Sci 2023; 14:5795-5801. [PMID: 37265739 PMCID: PMC10231425 DOI: 10.1039/d3sc00208j] [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: 01/12/2023] [Accepted: 04/26/2023] [Indexed: 06/03/2023] Open
Abstract
Efficient and straightforward peptide bond formation of N-, and C-terminal unprotected amino acids was successfully achieved by using trimethylaluminum. The coupling reaction was accomplished by pre-reaction of N-, and C-terminal unprotected amino acids and trimethylaluminum to form a five-membered ring that smoothly reacted with nucleophilic amino acid esters. This simple and highly efficient reaction system allows one-pot tripeptide synthesis without the need for expensive coupling reagents. Furthermore, peptide bond formation can be effectively achieved even for amino acids with bulky substituents at the side chain to afford the corresponding tripeptides in high yields in a one-pot manner. In addition, the reaction can be applied for further peptide elongation by the subsequent addition of amino acids and trimethylaluminum. We anticipate that this cost-effective, straightforward, and efficient protocol will be useful for the synthesis of a wide variety of peptides.
Collapse
Affiliation(s)
- Tomohiro Hattori
- Peptide Research Center, Chubu University 1200 Matsumoto-cho Kasugai Aichi 487-8501 Japan
| | - Hisashi Yamamoto
- Peptide Research Center, Chubu University 1200 Matsumoto-cho Kasugai Aichi 487-8501 Japan
| |
Collapse
|
17
|
Alektiar SN, Han J, Dang Y, Rubel CZ, Wickens ZK. Radical Hydrocarboxylation of Unactivated Alkenes via Photocatalytic Formate Activation. J Am Chem Soc 2023; 145:10991-10997. [PMID: 37186951 PMCID: PMC10636750 DOI: 10.1021/jacs.3c03671] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Herein we disclose a strategy to promote the hydrocarboxylation of unactivated alkenes using photochemical activation of formate salts. We illustrate that an alternative initiation mechanism circumvents the limitations of prior approaches and enables hydrocarboxylation of this challenging substrate class. Specifically, we found that accessing the requisite thiyl radical initiator without an exogenous chromophore eliminates major byproducts that have plagued attempts to exploit similar reactivity for unactivated alkene substrates. This redox-neutral method is technically simple to execute and effective across a broad range of alkene substrates. Feedstock alkenes, such as ethylene, are hydrocarboxylated at ambient temperature and pressure. A series of radical cyclization experiments indicate how the reactivity described in this report can be diverted by more complex radical processes.
Collapse
Affiliation(s)
- Sara N. Alektiar
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Jimin Han
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Y Dang
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Camille Z. Rubel
- Department of Chemistry, The Scripps Research Institute, La Jolla, California 92037, United States
| | - Zachary K. Wickens
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| |
Collapse
|
18
|
Mao F, Jin C, Wang J, Yang H, Yan X, Li X, Xu X. A one-step base-free synthesis of N-arylamides via modified pivaloyl mixed anhydride mediated amide coupling. Org Biomol Chem 2023; 21:3825-3828. [PMID: 37083033 DOI: 10.1039/d3ob00452j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/22/2023]
Abstract
Pivalic anhydride is shown to be an effective reagent for direct amidation of carboxylic acids with N-alkyl anilines. The only by-product of this reaction is nontoxic pivalic acid, which can be easily removed by aqueous workup. The reactions are conducted under mild conditions and found to be compatible with a range of carboxylic acids, including aromatic, heterocyclic, acrylic, and aliphatic carboxylic acids and amino acids generating the desired amides in short reaction times.
Collapse
Affiliation(s)
- Fenghua Mao
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Can Jin
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Jie Wang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Hui Yang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Xinhuan Yan
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Xiaoqing Li
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Xiangsheng Xu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
| |
Collapse
|
19
|
Ru T, Ning Y, Liu D, Tao Y, Wang J, Chen FE. Hydrogen-free palladium-catalyzed intramolecular anti-Markovnikov hydroaminocarbonylation of 2-(1-methylvinyl)anilines. Chem Commun (Camb) 2023; 59:3755-3758. [PMID: 36912028 DOI: 10.1039/d2cc06836b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2023]
Abstract
The palladium-catalyzed intramolecular hydroaminocarbonylation of 2-(1-methylvinyl)aniline derivatives has been achieved using dppp (1,3-bis(diphenylphosphino)propane) as a ligand under hydrogen-free conditions. The reaction involves the generation of an active palladium hydride species with a catalytic amount of TsOH. This amide bond formation reaction was applied to the synthesis of various 4-substituted 3,4-dihydroquinolone derivatives with both high yield and regioselectivity.
Collapse
Affiliation(s)
- Tong Ru
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Fudan University, Shanghai 200433, China.
- School of Pharmacy, Fudan University, Shanghai 201203, China
- Shanghai Engineering Center of Industrial Catalysis for Chiral Drugs, Shanghai 200433, China
| | - Yingtang Ning
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Fudan University, Shanghai 200433, China.
- Shanghai Engineering Center of Industrial Catalysis for Chiral Drugs, Shanghai 200433, China
| | - Ding Liu
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Fudan University, Shanghai 200433, China.
- Shanghai Engineering Center of Industrial Catalysis for Chiral Drugs, Shanghai 200433, China
| | - Yuan Tao
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Fudan University, Shanghai 200433, China.
- Shanghai Engineering Center of Industrial Catalysis for Chiral Drugs, Shanghai 200433, China
| | - Jiaqi Wang
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Fudan University, Shanghai 200433, China.
- Shanghai Engineering Center of Industrial Catalysis for Chiral Drugs, Shanghai 200433, China
| | - Fen-Er Chen
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Fudan University, Shanghai 200433, China.
- School of Pharmacy, Fudan University, Shanghai 201203, China
- Shanghai Engineering Center of Industrial Catalysis for Chiral Drugs, Shanghai 200433, China
| |
Collapse
|
20
|
Singh T, Upreti GC, Arora S, Chauhan H, Singh A. Visible Light-Mediated Carbamoylation of para-Quinone Methides. J Org Chem 2023. [PMID: 36792547 DOI: 10.1021/acs.joc.2c02394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
We report a photocatalytic approach for the installation of the amide moiety onto para-quinone methides. This transformation features a net reductive approach for the generation of carbamoyl radicals from amide-substituted Hantzsch ester derivatives under transition metal-free conditions. This protocol exhibits wide scope and allows access to diarylacetamides employing a C-C bond formation approach.
Collapse
Affiliation(s)
- Tavinder Singh
- Department of Chemistry, IIT Kanpur, Kanpur, UP 208016, India
| | | | - Shivani Arora
- Department of Chemistry, IIT Kanpur, Kanpur, UP 208016, India
| | | | - Anand Singh
- Department of Chemistry, IIT Kanpur, Kanpur, UP 208016, India.,Department of Sustainable Energy Engineering, IIT Kanpur, Kanpur, UP 208016, India
| |
Collapse
|
21
|
Kumar A, Chalannavar RK. Characterization of the major degradation products of the praziquantel API by mass spectrometry: Development and validation of a stability-indicating reversed phase UPLC method. J LIQ CHROMATOGR R T 2023. [DOI: 10.1080/10826076.2022.2163253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Ajay Kumar
- Department of Industrial Chemistry, Mangalore University, Mangalore, India
| | | |
Collapse
|
22
|
Traboni S, Esposito F, Ziaco M, Bedini E, Iadonisi A. A comprehensive solvent-free approach for the esterification and amidation of carboxylic acids mediated by carbodiimides. Tetrahedron 2023. [DOI: 10.1016/j.tet.2023.133291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
|
23
|
Ortiz Villamizar MC, Puerto Galvis CE, Pedraza Rodríguez SA, Zubkov FI, Kouznetsov VV. Synthesis, In Silico and In Vivo Toxicity Assessment of Functionalized Pyridophenanthridinones via Sequential MW-Assisted Intramolecular Friedel-Crafts Alkylation and Direct C-H Arylation. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27238112. [PMID: 36500206 PMCID: PMC9741109 DOI: 10.3390/molecules27238112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 11/12/2022] [Accepted: 11/14/2022] [Indexed: 11/23/2022]
Abstract
A rapid, efficient, and original synthesis of novel pyrido[3,2,1-de]phenanthridin-6-ones is reported. First, the key cinnamamide intermediates 8a-f were easily prepared from commercial substituted anilines, cinnamic acid, and 2-bromobenzylbromide in a tandem amidation and N-alkylation protocol. Then, these N-aryl-N-(2-bromobenzyl) cinnamamides 8a-f were subjected to a TFA-mediated intramolecular Friedel-Crafts alkylation followed by a Pd-catalyzed direct C-H arylation to obtain a series of potentially bioactive 4-phenyl-4,5-dihydro-6H,8H-pyrido[3,2,1-de]phenanthridin-6-one derivatives 4a-f in good yields. Finally, the toxicological profile of the prepared final compounds, including their corresponding intermediates, was explored through in silico computational methods, while the acute toxicity toward zebrafish embryos (96 hpf-LC50, 50% lethal concentration) was also determined in the present study.
Collapse
Affiliation(s)
- Marlyn C. Ortiz Villamizar
- Laboratorio de Química Orgánica y Biomolecular, CMN, Universidad Industrial de Santander, Parque Tecnológico Guatiguará, Km 2 Vía Refugio, Piedecuesta 681011, Colombia
| | - Carlos E. Puerto Galvis
- Laboratorio de Química Orgánica y Biomolecular, CMN, Universidad Industrial de Santander, Parque Tecnológico Guatiguará, Km 2 Vía Refugio, Piedecuesta 681011, Colombia
| | - Silvia A. Pedraza Rodríguez
- Laboratorio de Química Orgánica y Biomolecular, CMN, Universidad Industrial de Santander, Parque Tecnológico Guatiguará, Km 2 Vía Refugio, Piedecuesta 681011, Colombia
| | - Fedor I. Zubkov
- Department of Organic Chemistry, Peoples’ Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Street, 117198 Moscow, Russia
- Correspondence: (F.I.Z.); (V.V.K.); Tel.: +57-7-634-4000 (ext. 1243) (V.V.K.)
| | - Vladimir V. Kouznetsov
- Laboratorio de Química Orgánica y Biomolecular, CMN, Universidad Industrial de Santander, Parque Tecnológico Guatiguará, Km 2 Vía Refugio, Piedecuesta 681011, Colombia
- Correspondence: (F.I.Z.); (V.V.K.); Tel.: +57-7-634-4000 (ext. 1243) (V.V.K.)
| |
Collapse
|
24
|
Ji H, Wang Z, Zhan H, Fang Z, Zhang Q, Li D. Copper-catalyzed benzylic C–H amidation of toluene derivatives with N-(8-quinolyl)amides through C(sp3)–H/N–H cross dehydrogenative coupling. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.133066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
25
|
Maiti S, Roy S, Ghosh P, Kasera A, Maiti D. Photo‐Excited Nickel‐Catalyzed Silyl‐Radical‐Mediated Direct Activation of Carbamoyl Chlorides To Access (Hetero)aryl Carbamides**. Angew Chem Int Ed Engl 2022; 61:e202207472. [DOI: 10.1002/anie.202207472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Indexed: 11/10/2022]
Affiliation(s)
- Sudip Maiti
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400076 India
| | - Sayan Roy
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400076 India
| | - Pintu Ghosh
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400076 India
| | - Aashi Kasera
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400076 India
| | - Debabrata Maiti
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400076 India
- IDP in Climate Studies Indian Institute of Technology Bombay Mumbai 400076 India
| |
Collapse
|
26
|
Chouhan KK, Chowdhury D, Mukherjee A. Transamidation of aromatic amines with formamides using cyclic dihydrogen tetrametaphosphate. Org Biomol Chem 2022; 20:7929-7935. [PMID: 36155708 DOI: 10.1039/d2ob00882c] [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
Amide fragments are found to be one of the key constituents in a wide range of natural products and pharmacologically active compounds. Herein, we report a simple and efficient procedure for transamidation with a cyclic dihydrogen tetrametaphosphate. The protocol is simple, does not require any additives, and encompasses a broad substrate scope. To comprehend the mechanism of the present methodology, detailed spectroscopic and kinetic studies were undertaken.
Collapse
Affiliation(s)
- Kishor Kumar Chouhan
- Indian Institute of Technology Bhilai, GEC Campus, Sejbahar, Raipur-492015, Chhattisgarh, India.
| | - Deep Chowdhury
- Indian Institute of Technology Bhilai, GEC Campus, Sejbahar, Raipur-492015, Chhattisgarh, India.
| | - Arup Mukherjee
- Indian Institute of Technology Bhilai, GEC Campus, Sejbahar, Raipur-492015, Chhattisgarh, India.
| |
Collapse
|
27
|
Crocker MS, Deng Z, Johnston JN. Preparation of N-Aryl Amides by Epimerization-Free Umpolung Amide Synthesis. J Am Chem Soc 2022; 144:16708-16714. [PMID: 36067492 PMCID: PMC9634722 DOI: 10.1021/jacs.2c05986] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Amide synthesis is one of the most widely practiced chemical reactions, owing to its use in drug development and peptide synthesis. Despite the importance of these applications, the attendant effort to eliminate waste associated with these protocols has met with limited success, and pernicious α-epimerization is most often minimized but not eliminated when targeting challenging amides (e.g., N-aryl amides). This effort has focused on what is essentially a single paradigm in amide formation wherein an electrophilic acyl donor reacts with a nucleophilic amine. Umpolung amide synthesis (UmAS) emerged from α-halo nitroalkane reactions with amines and has since been developed into a method for the synthesis of enantiopure amides using entirely catalytic, enantioselective synthesis. However, its inability to forge N-aryl amides has been a longstanding problem, one limiting its application more broadly in drug development where α-chiral N-aryl amides are increasingly common. We report here the reaction of α-fluoronitroalkanes and N-aryl hydroxyl amines for the direct synthesis of N-aryl amides using a simple Brønsted base as the promoter. No other activating agents are required, and experiments guided by mechanistic hypotheses outline a mechanism based on the UmAS paradigm and confirm that the N-aryl amide, not the N-aryl hydroxamic acid, is the direct product. Ultimately, select chiral α-amino-N-aryl amides were prepared with complete conservation of enantioenrichment, in contrast to a parallel demonstration of their ability to epimerize using the conventional amide synthesis alternative.
Collapse
Affiliation(s)
- Michael S. Crocker
- Department of Chemistry and Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee 37235, USA
| | - Zihang Deng
- Department of Chemistry and Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee 37235, USA
| | - Jeffrey N. Johnston
- Department of Chemistry and Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee 37235, USA
| |
Collapse
|
28
|
Ji H, Zhan H, Chen S, Fang Z, Zhang Q, Li D. Copper‐catalyzed C(sp
3
)−H/N−H Cross Dehydrogenative Coupling Between Toluene Derivatives and Picolinamides. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Huihui Ji
- New Materials and Green Manufacturing Talent Introduction and Innovation Demonstration Base School of Materials and Chemical Engineering Hubei University of Technology Wuhan 430068 China
| | - Hongju Zhan
- Hubei Provincial Key Laboratory of Drug Synthesis and Optimization Jingchu University of Technology Jingmen 448000 China
| | - Shumin Chen
- Hubei Provincial Key Laboratory of Drug Synthesis and Optimization Jingchu University of Technology Jingmen 448000 China
| | - Zeguo Fang
- New Materials and Green Manufacturing Talent Introduction and Innovation Demonstration Base School of Materials and Chemical Engineering Hubei University of Technology Wuhan 430068 China
| | - Qian Zhang
- New Materials and Green Manufacturing Talent Introduction and Innovation Demonstration Base School of Materials and Chemical Engineering Hubei University of Technology Wuhan 430068 China
| | - Dong Li
- New Materials and Green Manufacturing Talent Introduction and Innovation Demonstration Base School of Materials and Chemical Engineering Hubei University of Technology Wuhan 430068 China
- Hubei Provincial Key Laboratory of Drug Synthesis and Optimization Jingchu University of Technology Jingmen 448000 China
| |
Collapse
|
29
|
Casti F, Mocci R, Porcheddu A. From amines to (form)amides: a simple and successful mechanochemical approach. Beilstein J Org Chem 2022; 18:1210-1216. [PMID: 36158174 PMCID: PMC9490066 DOI: 10.3762/bjoc.18.126] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 09/01/2022] [Indexed: 01/01/2023] Open
Abstract
Two easily accessible routes for preparing an array of formylated and acetylated amines under mechanochemical conditions are presented. The two methodologies exhibit complementary features as they enable the derivatization of aliphatic and aromatic amines.
Collapse
Affiliation(s)
- Federico Casti
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, Cittadella Universitaria, 09042 Cagliari, Italy
| | - Rita Mocci
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, Cittadella Universitaria, 09042 Cagliari, Italy
| | - Andrea Porcheddu
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, Cittadella Universitaria, 09042 Cagliari, Italy
| |
Collapse
|
30
|
Tosi E, Campagne JM, de Figueiredo RM. Amine Activation: "Inverse" Dipeptide Synthesis and Amide Function Formation through Activated Amino Compounds. J Org Chem 2022; 87:12148-12163. [PMID: 36069394 DOI: 10.1021/acs.joc.2c01288] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A copper(II)/HOBt-catalyzed procedure for the synthesis of dipeptides and "general" amides has been developed using microwave irradiation to considerably hasten the reaction. As an alternative to using traditional carboxylic acid activation, the method relies on the use of N-acyl imidazoles as activated amino partners. By doing so, a nonconventional way to reach dipeptides and amides has been proposed through the challenging and less studied N → C direction synthesis. A series of dipeptides and "general" amides have been successfully synthesized, and the applicability of the method has been illustrated in gram-scale syntheses. The mild reaction conditions proposed are completely adequate for couplings in the presence of sensitive amino acids, affording the products without detectable racemization. Furthermore, experimental observations prompted us to propose a plausible reaction pathway for the couplings.
Collapse
Affiliation(s)
- Eleonora Tosi
- ICGM, Univ Montpellier, CNRS, ENSCM, Montpellier 34293, France
| | | | | |
Collapse
|
31
|
Kumar V, Dhawan S, Bala R, Mohite SB, Singh P, Karpoormath R. Cu-catalysed transamidation of unactivated aliphatic amides. Org Biomol Chem 2022; 20:6931-6940. [PMID: 35983826 DOI: 10.1039/d2ob01152b] [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
Direct transamidation is gaining prominence as a ground-breaking technique that generates a wide variety of amides without the requirement of acid-amine coupling or other intermediate steps. However, transamidation of unactivated aliphatic amides, on the other hand, has been a long-standing issue in comparison to transamidation of activated amides. Herein, we report a transamidation approach of an unactivated aliphatic amide using a copper catalyst and chlorotrimethylsilane as an additive. In addition, we used transamidation as a tool for selective N-C(O) cleavage and O-C(O) formation to synthesise 2-substituted benzoxazoles and benzothiazoles. The reactions were carried out without using any solvents and offered wide substitution scope.
Collapse
Affiliation(s)
- Vishal Kumar
- Department of Pharmaceutical Chemistry, Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal (Westville), Durban-4000, South Africa.
| | - Sanjeev Dhawan
- Department of Pharmaceutical Chemistry, Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal (Westville), Durban-4000, South Africa.
| | - Renu Bala
- Department of Pharmaceutical Chemistry, Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal (Westville), Durban-4000, South Africa.
| | - Sachin Balaso Mohite
- Department of Pharmaceutical Chemistry, Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal (Westville), Durban-4000, South Africa.
| | - Parvesh Singh
- School of Chemistry and Physics, University of KwaZulu-Natal (Westville campus), Private Bag X01, Scottsville, Durban, South Africa.
| | - Rajshekhar Karpoormath
- Department of Pharmaceutical Chemistry, Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal (Westville), Durban-4000, South Africa.
| |
Collapse
|
32
|
Gudun KA, Tussupbayev S, Slamova A, Khalimon AY. Hydroboration of isocyanates: cobalt-catalyzed vs. catalyst-free approaches. Org Biomol Chem 2022; 20:6821-6830. [PMID: 35968649 DOI: 10.1039/d2ob01192a] [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
Hydroboration of isocyanates with HBPin was demonstrated using both catalytic and catalyst-free approaches. In arene solvents, the reactions employed the commercially available and bench-stable Co(acac)2/dpephos (dpephos = bis[(2-diphenylphosphino)phenyl] ether) pre-catalyst and proved chemodivergent, showing the formation of either formamides or N-methylamines, depending on the concentration of HBPin and the reaction conditions used. Catalytic monohydroboration of isocyanates to formamides was found to be highly chemoselective, tolerating alkenes, alkynes, aryl halides, esters, carboxamides, nitriles, nitroarenes and heteroaromatic functionalities. The catalyst-free hydroboration reactions have been demonstrated in neat HBPin. Whereas monohydroboration proved less selective compared with Co(acac)2/dpephos-catalyzed transformations, selective deoxygenative hydroboration of isocyanates to N-methylamines was observed under catalyst-free conditions.
Collapse
Affiliation(s)
- Kristina A Gudun
- Department of Chemistry, School of Sciences and Humanities, Nazarbayev University, 53 Kabanbay Batyr. Avenue, Nur-Sultan 010000, Kazakhstan.
| | - Samat Tussupbayev
- Institute of Polymer Materials and Technologies, 3/1 Atyrau 1, Almaty 050019, Kazakhstan
| | - Ainur Slamova
- Core Facilities, Office of the Provost, Nazarbayev University, 53 Kabanbay Batyr. Avenue, Nur-Sultan 010000, Kazakhstan
| | - Andrey Y Khalimon
- Department of Chemistry, School of Sciences and Humanities, Nazarbayev University, 53 Kabanbay Batyr. Avenue, Nur-Sultan 010000, Kazakhstan. .,The Environment and Resource Efficiency Cluster (EREC), Nazarbayev University, 53 Kabanbay Batyr. Avenue, Nur-Sultan 010000, Kazakhstan
| |
Collapse
|
33
|
Ismaeel N, Zhuo Z, Imran S, Yuan D, Yao Y. Synthesis and characterization of rare earth/lithium complexes stabilized by ethylenediamine-bridged bis(phenolate) ligands and their activity in catalyzing amidation reactions. Dalton Trans 2022; 51:13892-13901. [PMID: 36040382 DOI: 10.1039/d2dt02642b] [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
Rare earth/lithium complexes stabilized by ethylenediamine-bridged bis(phenolate) ligands have been synthesized and characterized. In addition to five rare earth/lithium amides isolated as major complexes, two other rare earth/lithium complexes bearing two phenolate ligands were also isolated. The activities of rare earth/lithium amides in catalyzing the amidation of aldehydes and amines were studied, which revealed that the yttrium/lithium complex was highly active for a wide range of substrates, generating 58 examples of amides in 42-99% yields under mild conditions (i.e., room temperature, 3-hour reaction time, additive-free). More importantly, this is the first example of rare earth-based catalysts capable of catalyzing the amidation of primary aliphatic amines.
Collapse
Affiliation(s)
- Nadia Ismaeel
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Dushu Lake Campus, Soochow University, Suzhou 215123, People's Republic of China.
| | - Zhixing Zhuo
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Dushu Lake Campus, Soochow University, Suzhou 215123, People's Republic of China.
| | - Sajid Imran
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Dushu Lake Campus, Soochow University, Suzhou 215123, People's Republic of 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, People's Republic of 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, People's Republic of China.
| |
Collapse
|
34
|
Binks L, Tian C, Fielden SDP, Vitorica-Yrezabal IJ, Leigh DA. Transamidation-Driven Molecular Pumps. J Am Chem Soc 2022; 144:15838-15844. [PMID: 35979923 PMCID: PMC9446885 DOI: 10.1021/jacs.2c06807] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
We report a new class of synthetic molecular pumps that use a stepwise information ratchet mechanism to achieve the kinetic gating required to sequester their macrocyclic substrates from bulk solution. Threading occurs as a result of active template reactions between the pump terminus amine and an acyl electrophile, whereby the bond-forming reaction is accelerated through the cavity of a crown ether. Carboxylation of the resulting amide results in displacement of the ring to the collection region of the thread. Conversion of the carbamate to a phenolic ester provides an intermediate rotaxane suitable for further pumping cycles. In this way rings can be ratcheted onto a thread from one or both ends of appropriately designed molecular pumps. Each pumping cycle results in one additional ring being added to the thread per terminus acyl group. The absence of pseudorotaxane states ensures that no dethreading of intermediates occurs during the pump operation. This facilitates the loading of different macrocycles in any chosen sequence, illustrated by the pump-mediated synthesis of a [4]rotaxane containing three different macrocycles as a single sequence isomer. A [5]rotaxane synthesized using a dual-opening transamidation pump was structurally characterized by single-crystal X-ray diffraction, revealing a series of stabilizing CH···O interactions between the crown ethers and the polyethylene glycol catchment region of the thread.
Collapse
Affiliation(s)
- Lorna Binks
- Department of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Chong Tian
- Department of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Stephen D P Fielden
- Department of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | | | - David A Leigh
- Department of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| |
Collapse
|
35
|
Mart M, Jurczak J, Karakaya I. Efficient catalyst-free direct amidation of non-activated carboxylic acids from carbodiimides. Org Biomol Chem 2022; 20:7900-7906. [PMID: 35979745 DOI: 10.1039/d2ob01322c] [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
A novel and efficient catalyst- and activating agent-free amidation method via direct amidation of carboxylic acids where carbodiimides act as a reagent instead of an activating agent is reported. The reaction is conducted under non-traditional coupling conditions where a higher temperature is employed. Besides not using stoichiometric ratios of activating agent or catalyst, this approach is made even more attractive by occurring in the presence of the environmentally friendly and recyclable non-toxic solvent of DMSO. A wide variety of benzylic, aliphatic, α,β-unsaturated and aromatic carboxylic acids provide related amides in up to 95% yield. The excellent yield from a gram-scale reaction shows that this application is particularly convenient for larger-scale synthesis applications.
Collapse
Affiliation(s)
- Mehmet Mart
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka, 44/52, 01-224, Warsaw, Poland.
| | - Janusz Jurczak
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka, 44/52, 01-224, Warsaw, Poland.
| | - Idris Karakaya
- Department of Chemistry, College of Basic Sciences, Gebze Technical University, 41400 Gebze, Turkey.
| |
Collapse
|
36
|
Joseph D, Lee S. Reaction of Amide and Sodium Azide for the Synthesis of Acyl Azide, Urea, and Iminophosphorane. Org Lett 2022; 24:6186-6191. [PMID: 35959978 DOI: 10.1021/acs.orglett.2c02429] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Amides reacted with NaN3 to give the acyl azides in DMF at 25 °C and produce the symmetrical ureas in THF/H2O at 80 °C via the sequential reaction of acyl substitution and Curtius rearrangement. All acyl azides were also obtained from the secondary amides via sequential reaction of p-toluenesulfonyl chloride and NaN3. In addition, keto-stabilized iminophosphoranes were prepared from a one-pot reaction of amides, NaN3, and phosphines.
Collapse
Affiliation(s)
- Devaneyan Joseph
- Department of Chemistry, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Sunwoo Lee
- Department of Chemistry, Chonnam National University, Gwangju, 61186, Republic of Korea
| |
Collapse
|
37
|
Maiti S, Roy S, Ghosh P, Kasera A, Maiti D. Photo‐Excited Nickel‐Catalyzed Silyl‐Radical‐Mediated Direct Activation of Carbamoyl Chlorides To Access (Hetero)aryl Car‐bamides. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202207472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Sudip Maiti
- IIT Bombay: Indian Institute of Technology Bombay Department of Chemistry INDIA
| | - Sayan Roy
- IIT Bombay: Indian Institute of Technology Bombay Department of Chemistry INDIA
| | - Pintu Ghosh
- IIT Bombay: Indian Institute of Technology Bombay Department of Chemistry INDIA
| | - Aashi Kasera
- IIT Bombay: Indian Institute of Technology Bombay Department of Chemistry INDIA
| | - Debabrata Maiti
- Indian Institute of Technology-Bombay Department of Chemistry Powai 400076 Mumbai INDIA
| |
Collapse
|
38
|
Raza Shah A, Rasool N, Bılal M, Mubarık A, Alı Hashmı M, Nadeem Akhtar M, Imran M, Ahmad G, Siddiqa A, Adnan Alı Shah S. Efficient Synthesis of 4‐Bromo‐
N
‐(1‐phenylethyl)benzamide, Arylation by Pd(0) Catalyst, Characterization and DFT Study. ChemistrySelect 2022. [DOI: 10.1002/slct.202200861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Alı Raza Shah
- Department of Chemistry Government College University Faisalabad 38000 Pakistan
| | - Nasır Rasool
- Department of Chemistry Government College University Faisalabad 38000 Pakistan
| | - Muhammad Bılal
- Department of Chemistry Government College University Faisalabad 38000 Pakistan
| | - Adeel Mubarık
- Department of Chemistry Government College University Faisalabad 38000 Pakistan
| | - Muhammad Alı Hashmı
- Department of Chemistry University of Education, Attock Campus Attock 43600 Pakistan
| | | | - Muhammad Imran
- Department of Chemistry, Faculty of Science King Khalid University P.O. Box 9004 Abha 61413 Saudi Arabia
- Research center for Advanced Materials Science (RCAMS) king Khalid University Abha 61514, P. O. Box 9004 Saudi Arabia
| | - Gulraız Ahmad
- Department of Chemistry Government College University Faisalabad 38000 Pakistan
| | - Ayesha Siddiqa
- Department of Chemistry Government College University Faisalabad 38000 Pakistan
| | - Syed Adnan Alı Shah
- Faculty of Pharmacy Universiti Teknologi MARA Cawangan Selangor Kampus Puncak Alam Bandar Puncak Alam 42300 Malaysia
- Atta-ur-Rahman Institute for Natural Products Discovery (AuRIns) Universiti Teknologi MARA Cawangan Selangor Kampus Puncak Alam Bandar Puncak Alam 42300 Malaysia
| |
Collapse
|
39
|
Abu-Yamin AA, Taher D, Korb M, Al Khalyfeh K, Ishtaiwi Z, Juwhari HK, Helal W, Amarne H, Mahmood S, Loloee R, YouSef YA, Ghazzy A, Lang H. Synthesis, chemical and physical properties of lanthanide(III) (Nd, Gd, Tb) complexes derived from (E)-ethyl 4-(2-hydroxybenzylideneamino)benzoate. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.115906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
40
|
Guo W, Liu Z, Wu F, Luo Y, Yao Z. [NN]‐Chelate nickel complexes with Schiff base ligands: Synthesis, structure and catalytic activity in green amidation reaction. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Wen Guo
- School of Chemical and Environmental Engineering Shanghai Institute of Technology Shanghai China
| | - Zhen‐Jiang Liu
- School of Chemical and Environmental Engineering Shanghai Institute of Technology Shanghai China
| | - Fanhong Wu
- School of Chemical and Environmental Engineering Shanghai Institute of Technology Shanghai China
| | - Yu‐Zhou Luo
- Business School Guilin University of Technology Guilin China
| | - Zi‐Jian Yao
- School of Chemical and Environmental Engineering Shanghai Institute of Technology Shanghai China
- Key Lab of Synthetic Chemistry of Natural Substances Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences Shanghai China
| |
Collapse
|
41
|
Kanaujiya VK, Tiwari V, Pattanaik K, Sabiah S, Kandasamy J. Synthesis of Glycouronamides by the Transamidation Approach at Room Temperature. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Varsha Tiwari
- IIT BHU: Indian Institute of Technology BHU Varanasi Chemistry INDIA
| | | | | | - Jeyakumar Kandasamy
- Indian Institute of Technology (BHU) Chemistry Varanasi 221005 Varanasi INDIA
| |
Collapse
|
42
|
Sathyendran S, Senadi GC. An Umpolung Route to Amides from α‐Aminonitriles under Metal‐Free Conditions. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
43
|
Malunavar SS, Anchi A, Prabhala P, Kalkhambkar RG, Borosky GL, Laali KK. N-ethyltetramethylguanidinium ionic liquid [ETMG][EtSO3] as organocatalyst and solvent for facile amide synthesis by formyl-transfer with N-formyl-saccharin. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.153990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
44
|
Zuo D, Wang Q, Liu L, Huang T, Szostak M, Chen T. Highly Chemoselective Transamidation of Unactivated Tertiary Amides by Electrophilic N-C(O) Activation by Amide-to-Acyl Iodide Re-routing. Angew Chem Int Ed Engl 2022; 61:e202202794. [PMID: 35355386 DOI: 10.1002/anie.202202794] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Indexed: 12/20/2022]
Abstract
The challenging transamidation of unactivated tertiary amides has been accomplished via cooperative acid/iodide catalysis. Most crucially, the method provides a novel manifold to re-route the reactivity of unactivated N,N-dialkyl amides through reactive acyl iodide intermediates, thus reverting the classical order of reactivity of carboxylic acid derivatives. This method provides a direct route to amide-to-amide bond interconversion with excellent chemoselectivity using equivalent amounts of amines. The combination of acid and iodide has been identified as the essential factor to activate the amide C-N bond through electrophilic catalytic activation, enabling the production of new desired transamidated products with wide substrate scope of both unactivated amides and amines, including late-stage functionalization of complex APIs (>80 examples). We anticipate that this powerful activation mode of unactivated amide bonds will find broad-ranging applications in chemical synthesis.
Collapse
Affiliation(s)
- Dongxu Zuo
- College of Chemical Engineering and Technology, Hainan University, Haikou, 570228, China
| | - Qun Wang
- College of Chemical Engineering and Technology, Hainan University, Haikou, 570228, China
- College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China
| | - Long Liu
- College of Chemical Engineering and Technology, Hainan University, Haikou, 570228, China
| | - Tianzeng Huang
- College of Chemical Engineering and Technology, Hainan University, Haikou, 570228, China
| | - Michal Szostak
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, NJ 07102, USA
| | - Tieqiao Chen
- College of Chemical Engineering and Technology, Hainan University, Haikou, 570228, China
| |
Collapse
|
45
|
Pandey VK, Sahoo S, Rit A. Simple silver(I)-salt catalyzed selective hydroboration of isocyanates, pyridines, and quinolines. Chem Commun (Camb) 2022; 58:5514-5517. [PMID: 35420096 DOI: 10.1039/d2cc00491g] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
AgSbF6 has been established as an effective catalyst for the hydroboration of structurally and electronically diverse isocyanates under ligand- and solvent-free conditions which selectively yielded either N-boryl formamides or N-boryl methylamines under different conditions. Further, various N-heterocycles can be selectively hydroborated using this simple catalytic system; pyridine derivatives undergo preferential 1,4 hydroboration whereas the formation of tetrahydroquinoline (after hydrolysis) via complete heterocycle hydrogenation was observed for quinolines.
Collapse
Affiliation(s)
- Vipin K Pandey
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India.
| | - Sangita Sahoo
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India.
| | - Arnab Rit
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India.
| |
Collapse
|
46
|
Tandem silylation—desilylation reaction in the synthesis of N-methyl carboxamides. Russ Chem Bull 2022. [DOI: 10.1007/s11172-022-3473-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
47
|
Zuo D, Wang Q, Liu L, Huang T, Szostak M, Chen T. Highly Chemoselective Transamidation of Unactivated Tertiary Amides by Electrophilic N–C(O) Activation via Amide‐to‐Acyl Iodide Re‐Routing. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202202794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Dongxu Zuo
- Hainan University College of Chemical Engineering and Technology CHINA
| | - Qun Wang
- Hunan University College of Chemistry and Chemical Engineering CHINA
| | - Long Liu
- Hainan University College of Chemical Engineering and Technology CHINA
| | - Tianzeng Huang
- Hainan University College of Chemical Engineering and Technology CHINA
| | - Michal Szostak
- Rutgers University Newark Department of Chemistry UNITED STATES
| | - Tieqiao Chen
- Hainan University College of Chemical Engineering and Technology No. 58, Renmin Avenue, Meilan District 570228 Haikou CHINA
| |
Collapse
|
48
|
Alfano AI, Lange H, Brindisi M. Amide Bonds Meet Flow Chemistry: A Journey into Methodologies and Sustainable Evolution. CHEMSUSCHEM 2022; 15:e202102708. [PMID: 35015338 PMCID: PMC9304223 DOI: 10.1002/cssc.202102708] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 01/11/2022] [Indexed: 06/03/2023]
Abstract
Formation of amide bonds is of immanent importance in organic and synthetic medicinal chemistry. Its presence in "traditional" small-molecule active pharmaceutical ingredients, in linear or cyclic oligo- and polypeptidic actives, including pseudopeptides, has led to the development of dedicated synthetic approaches for the formation of amide bonds starting from, if necessary, suitably protected amino acids. While the use of solid supported reagents is common in traditional peptide synthesis, similar approaches targeting amide bond formation in continuous-flow mode took off more significantly, after a first publication in 2006, only a couple of years ago. Most efforts rely upon the transition of traditional approaches in flow mode, or the combination of solid-phase peptide synthesis principles with flow chemistry, and advantages are mainly seen in improving space-time yields. This Review summarizes and compares the various approaches in terms of basic amide formation, peptide synthesis, and pseudopeptide generation, describing the technological approaches and the advantages that were generated by the specific flow approaches. A final discussion highlights potential future needs and perspectives in terms of greener and more sustainable syntheses.
Collapse
Affiliation(s)
- Antonella Ilenia Alfano
- SPOTS-Lab – Sustainable Pharmaceutical and Organic Technology and Synthesis LaboratoryUniversity of Naples ‘Federico II', Department of PharmacyVia Domenico Montesano 4980131NaplesItaly
| | - Heiko Lange
- University of Milano-Bicocca Department of Earth and Environmental SciencesPiazza della Scienza 120126MilanItaly
| | - Margherita Brindisi
- SPOTS-Lab – Sustainable Pharmaceutical and Organic Technology and Synthesis LaboratoryUniversity of Naples ‘Federico II', Department of PharmacyVia Domenico Montesano 4980131NaplesItaly
| |
Collapse
|
49
|
Li HC, Li GN, Sun K, Chen XL, Jiang MX, Qu LB, Yu B. Ce(III)/Photoassisted Synthesis of Amides from Carboxylic Acids and Isocyanates. Org Lett 2022; 24:2431-2435. [DOI: 10.1021/acs.orglett.2c00699] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Hao-Cong Li
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Guan-Nan Li
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Kai Sun
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Xiao-Lan Chen
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Ming-Xuan Jiang
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Ling-Bo Qu
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Bing Yu
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| |
Collapse
|
50
|
León Sandoval A, Doherty KE, Wadey GP, Leadbeater NE. Solvent- and additive-free oxidative amidation of aldehydes using a recyclable oxoammonium salt. Org Biomol Chem 2022; 20:2249-2254. [PMID: 35230379 DOI: 10.1039/d2ob00307d] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A range of acyl azoles have been prepared from aromatic, heteroaromatic, and aliphatic aldehydes by means of an oxidative amidation reaction. The methodology employs a substoichiometric quantity of an oxoammonium salt as the oxidant. It avoids the need for additives such as a base, is run solvent-free, and the oxoammonium salt is recyclable.
Collapse
Affiliation(s)
- Arturo León Sandoval
- Department of Chemistry, University of Connecticut, 55 North Eagleville Road, Storrs, Connecticut 06269, USA.
| | - Katrina E Doherty
- Department of Chemistry, University of Connecticut, 55 North Eagleville Road, Storrs, Connecticut 06269, USA.
| | - Geoffrey P Wadey
- Department of Chemistry, University of Connecticut, 55 North Eagleville Road, Storrs, Connecticut 06269, USA.
| | - Nicholas E Leadbeater
- Department of Chemistry, University of Connecticut, 55 North Eagleville Road, Storrs, Connecticut 06269, USA.
| |
Collapse
|