1
|
Talukdar V, Mondal K, Kumar Dhaked D, Das P. CuI/DMAP-Catalyzed Oxidative Alkynylation of 7-Azaindoles: Synthetic Scope and Mechanistic Studies. Chem Asian J 2024:e202300987. [PMID: 38258444 DOI: 10.1002/asia.202300987] [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: 11/08/2023] [Revised: 01/10/2024] [Accepted: 01/22/2024] [Indexed: 01/24/2024]
Abstract
An efficient and practical method for the N-alkynylation of 7-azaindoles has been established by using CuI/DMAP catalytic system at room temperature and in open air. This simple protocol has been successfully employed in the synthesis of a wide range of N-alkynylated 7-azaindoles with good yields. Also, this approach is well-suited for large-scale N-alkynylation reactions. The designed N-alkynylated 7-azaindoles were further subjected to Cu-/Ir-catalyzed alkyne-azide cycloaddition (CuAAC/IrAAC) or "click" reaction for the rapid synthesis of 1,4-/1,5 disubstituted 1,2,3-triazole decorated 7-azaindoles. A mechanistic study based on density functional theory (DFT) calculations and ultraviolet-visible (UV) spectroscopic studies revealed that the CuI and DMAP combination formed a [CuII (DMAP)2 I2 ] species, which acts as an active catalyst. The DFT method was used to assess the energetic viability of an organometallic in the C-N bond formation pathway originating from the [CuII (DMAP)2 I2 ] complex. We expect that the newly designed Cu/DMAP/alkyne system will offer valuable insights into the field of Cu-catalyzed transformations.
Collapse
Affiliation(s)
- Vishal Talukdar
- Department of Chemistry and Chemical Biology, Indian Institution of Technology (Indian School of Mines), Dhanbad, 826004, Dhanbad (Jharkhand), India
| | - Krishanu Mondal
- Department of Chemistry and Chemical Biology, Indian Institution of Technology (Indian School of Mines), Dhanbad, 826004, Dhanbad (Jharkhand), India
| | - Devendra Kumar Dhaked
- Department of Pharmacoinformatics, National Institute of Pharmaceutical Education and Research, (NIPER) Kolkata, 700054, Kolkata, India
| | - Parthasarathi Das
- Department of Chemistry and Chemical Biology, Indian Institution of Technology (Indian School of Mines), Dhanbad, 826004, Dhanbad (Jharkhand), India
| |
Collapse
|
2
|
Liang G, Anderson EA. Sequencing palladium-catalyzed cycloisomerization cascades in a synthesis of the gelsemine core. Chem Sci 2023; 14:6970-6974. [PMID: 37389268 PMCID: PMC10306092 DOI: 10.1039/d3sc01353g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 06/05/2023] [Indexed: 07/01/2023] Open
Abstract
Transition metal-catalyzed cycloisomerization is a powerful strategy for the construction of cyclic organic molecules, and the use of palladium catalysts can deliver a wide range of monocyclic and bicyclic products. However, applications of cycloisomerizations in complex target synthesis in which more than one cycloisomerization process is deployed in a cascade context are rare. Here we report investigations of the relative rates of two different types of ene-ynamide cycloisomerization that form fused and spirocyclic rings, and use of these results to design a sequence-controlled cascade cycloisomerization that prepares the tetracyclic core of gelsemine in a single step. Crucial to this work was an evaluation of the kinetics of each cycloisomerization in competition experiments, which revealed a key influence of the ynamide electron-withdrawing group on the cycloisomerization reaction.
Collapse
Affiliation(s)
- Guoduan Liang
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford 12 Mansfield Road Oxford OX1 3TA UK
| | - Edward A Anderson
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford 12 Mansfield Road Oxford OX1 3TA UK
| |
Collapse
|
3
|
Kravljanac P, Anderson EA. Synthetic Study toward Triterpenes from the Schisandraceae Family of Natural Products. Molecules 2023; 28:4468. [PMID: 37298943 PMCID: PMC10254518 DOI: 10.3390/molecules28114468] [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: 04/30/2023] [Revised: 05/24/2023] [Accepted: 05/24/2023] [Indexed: 06/12/2023] Open
Abstract
Triterpenoid natural products from the Schisandraceae family have long presented a significant synthetic challenge. Lancifodilactone I, a member of the family not previously synthesized, was identified as a key natural product target, from which many other members could be synthesized. We envisaged that the core ring system of lancifodilactone I could be accessed by a strategy involving palladium-catalysed cascade cyclisation of a bromoenynamide, via carbopalladation, Suzuki coupling and 8π-electrocyclisation, to synthesize the core 7,8-fused ring system. Exploration of this strategy on model systems resulted in efficient syntheses of 5,6- and 5,8-fused systems in high yields, which represent the first such cyclisation where the ynamide nitrogen atom is 'external' to the forming ring system. The enamide functionality resident in the cascade cyclisation product was found to be less nucleophilic than the accompanying tri-/tetrasubstituted alkene(s), enabling regioselective oxidations. Application of this strategy to 7,6-, and 7,8-fused systems, and ultimately the 'real' substrate, was ultimately thwarted by the difficulty of 7-membered ring closure, leading to side product formation. Nevertheless, a tandem bromoenynamide carbopalladation, Suzuki coupling and 6/8π-electrocyclisation was shown to be a highly efficient tactic for the formation of bicyclic enamides, which may find applications in other synthetic contexts.
Collapse
Affiliation(s)
| | - Edward A. Anderson
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, UK
| |
Collapse
|
4
|
Mahe C, Blacque O, Gasser G, Gandon V, Cariou K. N-Metallocenyl Ynamides: Preparation, Reactivity, and Synthesis of ansa[3]-Ferrocenylamides. Org Lett 2023; 25:624-629. [PMID: 36688847 DOI: 10.1021/acs.orglett.2c04169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The first synthesis of various N-metallocenyl ynamides has been developed, and two strategies for the oxidative cyclization of N-ferrocenyl ynamide into ansa[3]-ferrocenylamide are also reported. The mechanism for the iodine(III)-triggered transformation has been studied by means of DFT calculations, showing that it proceeds through a concerted iodination deprotonation step.
Collapse
Affiliation(s)
- Capucine Mahe
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Laboratory for Inorganic Chemical Biology, 75005 Paris, France.,CNRS, Institut de Chimie des Substances Naturelles, LabEx LERMIT, UPR 2301, Université Paris-Saclay, 91198 Gif-sur-Yvette, France
| | - Olivier Blacque
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Gilles Gasser
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Laboratory for Inorganic Chemical Biology, 75005 Paris, France
| | - Vincent Gandon
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, CNRS UMR 8182, Université Paris Saclay, 91405 Orsay, France.,Laboratoire de Chimie Moléculaire (LCM), CNRS UMR 9168, Ecole Polytechnique, Institut Polytechnique de Paris, Route de Saclay, 91128 Palaiseau, France
| | - Kevin Cariou
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Laboratory for Inorganic Chemical Biology, 75005 Paris, France
| |
Collapse
|
5
|
Huang S, Ma J, Yi Y, Li M, Cai P, Wu N. Synthesis of orthogonal push-pull chromophores via click reaction of arylynamines. Org Biomol Chem 2022; 20:4081-4085. [PMID: 35521652 DOI: 10.1039/d2ob00677d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Herein, we report a catalyst-free 'click' reaction: metal-free [2 + 2] cycloaddition-retro-electrocyclisation (CA-RE) of arylynamines with the sluggish acceptor tetracyanoquinodimethane (TCNQ) to provide orthogonal electron-push-pull light-harvesting small molecules: N-heterocyclic dicyanoquinodimethane-substituted methylene malononitriles. Ynamines are reactive alkynes and tend to induce over-reactions with the CA-RE adducts. The reactivity of arylynamines was balanced properly by ensuring the electron-density of the nitrogen atom was delocalised more over the aromatic rings than the triple bond.
Collapse
Affiliation(s)
- Shuangping Huang
- College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan, Shanxi, 030024, China
| | - Jing Ma
- College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan, Shanxi, 030024, China
| | - Yikun Yi
- School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, Shann'xi, 710049, China
| | - Mingtao Li
- School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, Shann'xi, 710049, China
| | - Ping Cai
- School of Material Science and Engineering & Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, Guilin, Guangxi, 541004, China
| | - Na Wu
- School of Chemistry and Biosciences, Faculty of Life Sciences, University of Bradford, Bradford, West Yorkshire, BD7 1DP, UK.
| |
Collapse
|
6
|
Philippe C, Coste M, Bretonnière Y, Lemiègre L, Ulrich S, Trolez Y. Quadruple Functionalization of a Tetraphenylethylene Aromatic Scaffold with Ynamides or Tetracyanobutadienes: Synthesis and Optical Properties. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200049] [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)
- Clotilde Philippe
- ENSCR: Ecole nationale superieure de chimie de Rennes ISCR UMR6226 FRANCE
| | - Maëva Coste
- CNRS: Centre National de la Recherche Scientifique IBMM UMR5247 FRANCE
| | - Yann Bretonnière
- Ecole normale superieure de Lyon Laboratoire de Chimie UMR5182 FRANCE
| | - Loïc Lemiègre
- ENSCR: Ecole nationale superieure de chimie de Rennes ISCR UMR6226 FRANCE
| | - Sebastien Ulrich
- CNRS: Centre National de la Recherche Scientifique Institut des Biomolécules Max Mousseron (IBMM) Pôle Chimie Balard RechercheIBMM - UMR 52471919, route de Mende 34293 MONTPELLIER FRANCE
| | - Yann Trolez
- ENSCR: Ecole nationale superieure de chimie de Rennes ISCR UMR6226 FRANCE
| |
Collapse
|
7
|
|
8
|
Martin ML, Boyer A. Controlling Selectivity in the Synthesis of
Z
‐α,β‐Unsaturated Amidines by Tuning the
N
‐Sulfonyl Group in a Rhodium(II) Catalyzed 1,2‐H Shift. European J Org Chem 2021. [DOI: 10.1002/ejoc.202101235] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Matthew L. Martin
- School of Chemistry University of Glasgow Joseph Black Building G12 8QQ Glasgow Scotland
| | - Alistair Boyer
- School of Chemistry University of Glasgow Joseph Black Building G12 8QQ Glasgow Scotland
| |
Collapse
|
9
|
The [4.3.0] Piperidine Alkaloids: Architectures, Biology, Biosyntheses, and the Complete Details of the Asymmetric Syntheses of Streptazone A and Abikoviromycin. Synlett 2021. [DOI: 10.1055/a-1688-0826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
AbstractPiperidine alkaloids continue to challenge the synthetic community by featuring densely functionalized scaffolds that often require careful chemical orchestration. Streptazone A and abikoviromycin are small and highly functionalized piperidine alkaloids, both accommodating Michael acceptors and a labile epoxide. These moieties are loaded into a [4.3.0] bicyclic core also present in other structurally related natural products, including the well-known piperidine alkaloid streptazolin. Here, we cover ring-closing strategies employed in earlier streptazolin syntheses; provide a concise overview of structures, biological properties, and biosyntheses of selected [4.3.0] piperidine alkaloids; and, finally, provide complete coverage of our recent asymmetric syntheses of streptazone A and abikoviromycin.1 Introduction2 Streptazolin Syntheses3 Epo-[4.3.0] Piperidine Alkaloids3.1 Streptazones3.2 Abikoviromycin3.3 Strepchazolin A and B3.4 Hatomamicin3.5 Kobutimycin A and B3.6 Camporidines A and B3.7 Epostatin3.8 N-Hydroxydihydroabikoviromycin3.9 Dihydroabikoviromycin3.10 Biosynthesis of Streptazone E and Camporidines4 Syntheses of the Streptazones and Abikoviromycin4.1 Retrosynthesis4.2 Results and Discussion5 Conclusion
Collapse
|
10
|
Davies PW. Gold-Catalyzed Annulations with Nucleophilic Nitrenoids Enabled by Heteroatom-Substituted Alkynes. CHEM REC 2021; 21:3964-3977. [PMID: 34708496 DOI: 10.1002/tcr.202100205] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 09/18/2021] [Accepted: 09/20/2021] [Indexed: 11/07/2022]
Abstract
The combination of a nucleophilic nitrene equivalent, a triple bond and a π-acid catalyst has underpinned numerous efficient transformations for the preparation of azacycles. This personal account details our efforts in developing an annulation strategy. Adding a nucleophilic nitrenoid to an activated alkyne can generate carbenoid character that is then quenched by a cyclisation onto the nitrenoid substituent. The use and development of N-acyl and N-heterocyclic pyridinium-N-aminides as 1,3-N,O and 1,3-N,N-dipole equivalents is discussed in the context of oxazole and heterocycle-fused imidazole formation, respectively. The resulting processes are highly efficient, practically straightforward, and tolerate considerable structural and functional group variation. Our use of heteroatom-substituted alkynes as enabling tools for reaction discovery is discussed. The reactivity accessed from the strong donor-like properties of ynamides is complemented by that obtained from alkynyl thioethers, which are emerging as interesting substrates for π-acid catalysis.
Collapse
Affiliation(s)
- Paul W Davies
- School of Chemistry, University of Birmingham Edgbaston, Birmingham, B15 2TT, UK
| |
Collapse
|
11
|
Sensing Techniques for Organochlorides through Intermolecular Interaction with Bicyclic Amidines. BIOSENSORS 2021; 11:bios11110413. [PMID: 34821631 PMCID: PMC8615940 DOI: 10.3390/bios11110413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 10/18/2021] [Accepted: 10/20/2021] [Indexed: 11/21/2022]
Abstract
Toxic organochloride molecules are widely used in industry for various purposes. With their high volatility, the direct detection of organochlorides in environmental samples is challenging. Here, a new organochloride detection mechanism using 1,5-diazabicyclo[4.3.0]non-5-ene (DBN) is introduced to simplify a sensing method with higher detection sensitivity. Three types of organochloride compounds-trichloroethylene (TCE), dichloromethane (DCM), and dichlorodiphenyltrichloroethane (DDT)—were targeted to understand DCM conjugation chemistry by using nuclear magnetic resonance (NMR) and liquid chromatography with a mass spectrometer (LC-MS). 13C-NMR spectra and LC-MS data indicated that DBN can be labeled on these organochloride compounds by chlorine–nitrogen interaction. Furthermore, to demonstrate the organochloride sensing capability, the labeling yield and limit of detection were determined by a colorimetric assay as well as micellar electrokinetic chromatography (MEKC). The interaction with DBN was most appreciable for TCE, among other organochlorides. TCE was detected at picomolar levels, which is two orders of magnitude lower than the maximum contaminant level set by the United States Environmental Protection Agency. MEKC, in conjunction with this DBN-labeling method, enables us to develop a field-deployable sensing platform for detecting toxic organochlorides with high sensitivity.
Collapse
|
12
|
Thilmany P, Guarnieri-Ibáñez A, Jacob C, Lacour J, Evano G. Straightforward Synthesis of Indenes by Gold-Catalyzed Intramolecular Hydroalkylation of Ynamides. ACS ORGANIC & INORGANIC AU 2021; 2:53-58. [PMID: 36855401 PMCID: PMC9954284 DOI: 10.1021/acsorginorgau.1c00021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An original and straightforward entry to polysubstituted indenes from readily available ynamides is reported. Upon reaction with a N-heterocyclic carbene-gold complex under mild conditions, activated keteniminium ions are generated whose unique electrophilicity triggers a [1,5]-hydride shift and a subsequent cyclization. The presence of an endocyclic enamide in the densely functionalized resulting indenes was shown to be especially useful and versatile, offering a range of opportunities for their further postfunctionalization.
Collapse
Affiliation(s)
- Pierre Thilmany
- Laboratoire
de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP160/06, 1050 Brussels, Belgium
| | - Alejandro Guarnieri-Ibáñez
- Department
of Organic Chemistry, University of Geneva, Quai Ernest Ansermet 30, 1211 Geneva 4, Switzerland
| | - Clément Jacob
- Laboratoire
de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP160/06, 1050 Brussels, Belgium,Organic
Synthesis Division, Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Jérôme Lacour
- Department
of Organic Chemistry, University of Geneva, Quai Ernest Ansermet 30, 1211 Geneva 4, Switzerland
| | - Gwilherm Evano
- Laboratoire
de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP160/06, 1050 Brussels, Belgium,
| |
Collapse
|
13
|
Lei J, Xie W, Li J, Wu Y, Xie X. Synthesis of N‐Aryl‐ and N‐Alkenylhydrazides through C(sp
2
)−N Bond Construction. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100631] [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)
- Jian Lei
- College of Chemical Engineering and Materials Science Quanzhou Normal University 398 Donghai Avenue Quanzhou 362000 P. R. China
| | - Wenqian Xie
- College of Chemical Engineering and Materials Science Quanzhou Normal University 398 Donghai Avenue Quanzhou 362000 P. R. China
| | - Jing Li
- State Key Laboratory of Respiratory Disease Guangzhou Institutes of Biomedicine and Health Chinese Academy of Sciences Guangzhou 510530 P. R. China
| | - Ya Wu
- College of Biological and Chemical Engineering Chongqing University of Education No.9 Xuefu Avenue Chongqing 400067 P. R. China
| | - Xiaolan Xie
- College of Chemical Engineering and Materials Science Quanzhou Normal University 398 Donghai Avenue Quanzhou 362000 P. R. China
| |
Collapse
|
14
|
Campeau D, Pommainville A, Gagosz F. Ynamides as Three-Atom Components in Cycloadditions: An Unexplored Chemical Reaction Space. J Am Chem Soc 2021; 143:9601-9611. [PMID: 34132536 DOI: 10.1021/jacs.1c04051] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
While 1,3-dipolar cycloadditions have appeared to be a fertile area for research, as attested by the numerous synthetic transformations and resulting applications that have been developed during the past 60 years, the use of neutral three-atom components (TACs) in (3+2) cycloadditions remains comparatively sparse. Neutral TACs, however, have great synthetic potential given that their reaction with a π system can produce zwitterionic cycloadducts that may be manipulated for further chemistry. We report herein that ynamides, a class of carbon π systems that has seen wide interest over the last two decades, can be used as neutral TACs in thermally induced intramolecular (3+2) cycloaddition reactions with alkynes to yield a variety of functionalized pyrroles. The transformation is proposed to occur in a stepwise manner via the intermediacy of a pyrrolium ylide, from which the electron-withdrawing group on the nitrogen atom undergoes an intramolecular 1,2-shift to produce the neutral pyrrole. This work demonstrates a yet unexplored facet of ynamide reactivity with great potential in heterocyclic chemistry.
Collapse
Affiliation(s)
- Dominic Campeau
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, K1N 6N5, Ottawa, Canada
| | - Alice Pommainville
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, K1N 6N5, Ottawa, Canada
| | - Fabien Gagosz
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, K1N 6N5, Ottawa, Canada
| |
Collapse
|
15
|
Tuck JR, Tombari RJ, Yardeny N, Olson DE. A Modular Approach to Arylazo-1,2,3-triazole Photoswitches. Org Lett 2021; 23:4305-4310. [PMID: 34019429 DOI: 10.1021/acs.orglett.1c01230] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Azoheteroarenes make up an emerging class of photoswitchable compounds with unique photophysical properties and advantages over traditional azobenzenes. Therefore, methods for synthesizing azoheteroarenes are highly desirable. Here, we utilize azide-alkyne click chemistry to access arylazo-1,2,3-triazoles, a previously unexplored class of azoheteroarenes that exhibit high thermal stabilities and near-quantitative bidirectional photoconversion. Controlling the catalyst or 1,3-dipole grants access to both regioisomeric arylazotriazoles and arylazoisoxazoles, highlighting the versatility of our approach.
Collapse
Affiliation(s)
- Jeremy R Tuck
- Department of Chemistry, University of California, Davis, Davis, California 95616, United States
| | - Robert J Tombari
- Department of Chemistry, University of California, Davis, Davis, California 95616, United States
| | - Noah Yardeny
- Department of Chemistry, University of California, Davis, Davis, California 95616, United States
| | - David E Olson
- Department of Chemistry, University of California, Davis, Davis, California 95616, United States.,Department of Biochemistry & Molecular Medicine, School of Medicine, University of California, Davis, Sacramento, California 95817, United States.,Center for Neuroscience, University of California, Davis, Davis, California 95618, United States
| |
Collapse
|
16
|
Takai R, Shimbo D, Tada N, Itoh A. Ligand-Enabled Copper-Catalyzed N-Alkynylation of Sulfonamide with Alkynyl Benziodoxolone: Synthesis of Amino Acid-Derived Ynamide. J Org Chem 2021; 86:4699-4713. [PMID: 33719425 DOI: 10.1021/acs.joc.1c00101] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Ynamides are versatile building blocks in organic synthesis. However, the synthesis of amino acid-derived ynamides is difficult but in high demand. Herein, we disclose the copper-catalyzed Csp-N coupling of sulfonamide, including amino acid and peptide derivatives, to give ynamides by using alkynyl benziodoxolones with broad functional group tolerance under mild reaction conditions. The electron-rich bipyridine as a ligand and ethanol as solvent were used for the success of this reaction. The usefulness of the obtained amino acid-derived ynamide as building block was showcased by further derivatization to unique amino acid derivatives. A control experiment to elucidate the mechanistic insight was also described.
Collapse
Affiliation(s)
- Ryogo Takai
- Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
| | - Daisuke Shimbo
- Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
| | - Norihiro Tada
- Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
| | - Akichika Itoh
- Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
| |
Collapse
|
17
|
Tan TD, Wang ZS, Qian PC, Ye LW. Radical Reactions of Ynamides. SMALL METHODS 2021; 5:e2000673. [PMID: 34927818 DOI: 10.1002/smtd.202000673] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Revised: 08/31/2020] [Indexed: 06/14/2023]
Abstract
Ynamides are electron-rich heteroatom-substituted alkynes with C-C triple bond directly tethered to the amide group. Over the past decades, ynamides have proven to be versatile reagents for organic synthesis and have received extensive attention. Compared with the well-established ionic reactions of ynamides, radical-based ynamide reactions have been exploited relatively seldom. Herein, radical reactions of ynamides, classified by radical attack at the α-position and β-position of ynamides, are reviewed by highlighting the reaction selectivity, scope, mechanism, and applicability. The aim of this review is to provide a comprehensive summarization of these advances, casting light on the further development of ynamide chemistry.
Collapse
Affiliation(s)
- Tong-De Tan
- Key Laboratory for Chemical Biology of Fujian Province & State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Ze-Shu Wang
- Key Laboratory for Chemical Biology of Fujian Province & State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Peng-Cheng Qian
- Institute of New Materials & Industry Technology, College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou, 325035, China
| | - Long-Wu Ye
- Key Laboratory for Chemical Biology of Fujian Province & State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, China
| |
Collapse
|
18
|
Zhao L, Yang H, Li R, Tao Y, Guo XF, Anderson EA, Whiting A, Wu N. Synthesis of Sulfonamide-Based Ynamides and Ynamines in Water. J Org Chem 2021; 86:1938-1947. [PMID: 33356269 DOI: 10.1021/acs.joc.0c02326] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Ynamides, though relatively more stable than ynamines, are still moisture-sensitive and prone to hydration especially under acidic and heating conditions. Here we report an environmentally benign, robust protocol to synthesize sulfonamide-based ynamides and arylynamines via Sonogashira coupling reactions in water, using a readily available quaternary ammonium salt as the surfactant.
Collapse
Affiliation(s)
- Lei Zhao
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Science, Guangxi Normal University, Guilin, Guangxi 541004, China
| | - Hongyi Yang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Science, Guangxi Normal University, Guilin, Guangxi 541004, China
| | - Ruikun Li
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Science, Guangxi Normal University, Guilin, Guangxi 541004, China
| | - Ye Tao
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Science, Guangxi Normal University, Guilin, Guangxi 541004, China
| | - Xiao-Feng Guo
- College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China
| | - Edward A Anderson
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Andrew Whiting
- Department of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K
| | - Na Wu
- School of Chemistry and Bioscience, University of Bradford, Bradford, West Yorkshire BD7 1DP, U.K
| |
Collapse
|
19
|
Priest JD, Male L, Davies PW. Diastereoselective sulfur ylide rearrangements from gold catalyzed oxidation of ynamides. Tetrahedron 2021. [DOI: 10.1016/j.tet.2020.131757] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
20
|
Zimin DP, Dar’in DV, Kukushkin VY, Dubovtsev AY. Oxygen Atom Transfer as Key To Reverse Regioselectivity in the Gold(I)-Catalyzed Generation of Aminooxazoles from Ynamides. J Org Chem 2020; 86:1748-1757. [DOI: 10.1021/acs.joc.0c02584] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Dmitry P. Zimin
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation
| | - Dmitry V. Dar’in
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation
| | - Vadim Yu. Kukushkin
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation
- South Ural State University, 76, Lenin Av., Chelyabinsk 454080, Russian Federation
| | - Alexey Yu. Dubovtsev
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation
| |
Collapse
|
21
|
Abstract
Three- and four-membered rings, widespread motifs in nature and medicinal chemistry, have fascinated chemists ever since their discovery. However, due to energetic considerations, small rings are often difficult to assemble. In this regard, homogeneous gold catalysis has emerged as a powerful tool to construct these highly strained carbocycles. This review aims to provide a comprehensive summary of all the major advances and discoveries made in the gold-catalyzed synthesis of cyclopropanes, cyclopropenes, cyclobutanes, cyclobutenes, and their corresponding heterocyclic or heterosubstituted analogs.
Collapse
Affiliation(s)
- Mauro Mato
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain.,Departament de Quı́mica Analı́tica i Quı́mica Orgànica, Universitat Rovira i Virgili, C/Marcel·li Domingo s/n, 43007 Tarragona, Spain
| | - Allegra Franchino
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain.,Departament de Quı́mica Analı́tica i Quı́mica Orgànica, Universitat Rovira i Virgili, C/Marcel·li Domingo s/n, 43007 Tarragona, Spain
| | - Cristina Garcı A-Morales
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain.,Departament de Quı́mica Analı́tica i Quı́mica Orgànica, Universitat Rovira i Virgili, C/Marcel·li Domingo s/n, 43007 Tarragona, Spain
| | - Antonio M Echavarren
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain.,Departament de Quı́mica Analı́tica i Quı́mica Orgànica, Universitat Rovira i Virgili, C/Marcel·li Domingo s/n, 43007 Tarragona, Spain
| |
Collapse
|
22
|
Abstract
Copper-catalyzed cross-coupling of thiols and bromoalkynes affords a mild, rapid, and selective Csp-S coupling with broad scope, enabling the use of aryl-, alkyl-, and silyl-substituted alkynyl coupling partners (38 total examples, 50-99% yields). Importantly, the method enables the preparation of difficult-to-access bis-heteroatom-functionalized (S,S-, S,P-, and S,N-) alkynes.
Collapse
Affiliation(s)
- Éric Godin
- Département de Chimie, Centre for Green Chemistry and Catalysis, Université de Montréal, Complexe des Sciences, 1375 Avenue Thérèse-Lavoie-Roux, Montréal, Québec H2V 0B3, Canada
| | - Jeffrey Santandrea
- Département de Chimie, Centre for Green Chemistry and Catalysis, Université de Montréal, Complexe des Sciences, 1375 Avenue Thérèse-Lavoie-Roux, Montréal, Québec H2V 0B3, Canada
| | - Antoine Caron
- Département de Chimie, Centre for Green Chemistry and Catalysis, Université de Montréal, Complexe des Sciences, 1375 Avenue Thérèse-Lavoie-Roux, Montréal, Québec H2V 0B3, Canada
| | - Shawn K Collins
- Département de Chimie, Centre for Green Chemistry and Catalysis, Université de Montréal, Complexe des Sciences, 1375 Avenue Thérèse-Lavoie-Roux, Montréal, Québec H2V 0B3, Canada
| |
Collapse
|
23
|
Wood JM, Satam NS, Almeida RG, Cristani VS, de Lima DP, Dantas-Pereira L, Salomão K, Menna-Barreto RF, Namboothiri IN, Bower JF, da Silva Júnior EN. Strategies towards potent trypanocidal drugs: Application of Rh-catalyzed [2 + 2 + 2] cycloadditions, sulfonyl phthalide annulation and nitroalkene reactions for the synthesis of substituted quinones and their evaluation against Trypanosoma cruzi. Bioorg Med Chem 2020; 28:115565. [DOI: 10.1016/j.bmc.2020.115565] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 05/21/2020] [Accepted: 05/22/2020] [Indexed: 02/08/2023]
|
24
|
Arce EM, Lamont SG, Davies PW. Sulfenyl Ynamides in Gold Catalysis: Synthesis of Oxo‐functionalised 4‐aminoimidazolyl Fused Compounds by Intermolecular Annulation Reactions. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000134] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Elsa M. Arce
- Haworth Building, School of ChemistryUniversity of Birmingham, Edgbaston. Birmingham B15 2TT U.K
| | - Scott G. Lamont
- Medicinal Chemistry, Research and Early DevelopmentOncology R&D, AstraZeneca Cambridge CB10 1XL UK
| | - Paul W. Davies
- Haworth Building, School of ChemistryUniversity of Birmingham, Edgbaston. Birmingham B15 2TT U.K
| |
Collapse
|
25
|
Thilmany P, Evano G. Efficient and Divergent Synthesis of α‐Halogenated Amides and Esters by Double Electrophilic Activation of Ynamides. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201911722] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Pierre Thilmany
- Laboratoire de Chimie Organique Service de Chimie et PhysicoChimie Organiques Université libre de Bruxelles (ULB) Avenue F. D. Roosevelt 50, CP160/06 1050 Brussels Belgium
| | - Gwilherm Evano
- Laboratoire de Chimie Organique Service de Chimie et PhysicoChimie Organiques Université libre de Bruxelles (ULB) Avenue F. D. Roosevelt 50, CP160/06 1050 Brussels Belgium
| |
Collapse
|
26
|
Thilmany P, Evano G. Efficient and Divergent Synthesis of α-Halogenated Amides and Esters by Double Electrophilic Activation of Ynamides. Angew Chem Int Ed Engl 2019; 59:242-246. [PMID: 31637817 DOI: 10.1002/anie.201911722] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Indexed: 11/07/2022]
Abstract
An efficient and modular entry to α-halogenated amides and esters is reported. This reaction is based on an underestimated double electrophilic activation of ynamides sequentially involving highly reactive activated keteniminium and iminium ions. Upon simple reaction with HCl and an electrophilic halogenation reagent in the presence of water or an alcohol, a broad range of ynamides can be transformed, in a highly divergent manner, to α-halo amides and esters with high efficiency and under mild conditions.
Collapse
Affiliation(s)
- Pierre Thilmany
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP160/06, 1050, Brussels, Belgium
| | - Gwilherm Evano
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP160/06, 1050, Brussels, Belgium
| |
Collapse
|
27
|
Chen C, Cui S. Iterative Assembly of Nitrile Oxides and Ynamides: Synthesis of Isoxazoles and Pyrroles. J Org Chem 2019; 84:12157-12164. [DOI: 10.1021/acs.joc.9b01430] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Changwei Chen
- Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Sunliang Cui
- Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| |
Collapse
|
28
|
Andna L, Miesch L. Metal-free synthesis of activated ynesulfonamides and tertiary enesulfonamides. Org Biomol Chem 2019; 17:5688-5692. [PMID: 31134243 DOI: 10.1039/c9ob00947g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
An operationally simple synthesis of activated ynesulfonamides and enesulfonamides is described. Ynesulfonamides can be obtained through reaction of sulfonylamides with activated bromoalkynes and Triton B in a short time at room temperature. Likewise, terminal alkynes react with sulfonylamides to provide enesulfonamides. Z/E enesulfonamides can be transformed exclusively into E enesulfonamides.
Collapse
Affiliation(s)
- Lucile Andna
- Equipe Synthèse Organique et Phytochimie, Institut de Chimie, CNRS-UdS UMR 7177, 4, rue Blaise Pascal CS 90032, 67081 Strasbourg, France.
| | | |
Collapse
|
29
|
Matsuoka J, Kumagai H, Inuki S, Oishi S, Ohno H. Construction of the Pyrrolo[2,3-d]carbazole Core of Spiroindoline Alkaloids by Gold-Catalyzed Cascade Cyclization of Ynamide. J Org Chem 2019; 84:9358-9363. [DOI: 10.1021/acs.joc.9b01149] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Junpei Matsuoka
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Hiroshi Kumagai
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Shinsuke Inuki
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Shinya Oishi
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Hiroaki Ohno
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| |
Collapse
|
30
|
Mansfield SJ, Smith RC, Yong JRJ, Garry OL, Anderson EA. A General Copper-Catalyzed Synthesis of Ynamides from 1,2-Dichloroenamides. Org Lett 2019; 21:2918-2922. [DOI: 10.1021/acs.orglett.9b00971] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
| | - Russell C. Smith
- Janssen PRD, 3210 Merryfield Row, San Diego, California 92121, United States
| | | | - Olivia L. Garry
- Chemistry Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, U.K
| | | |
Collapse
|
31
|
Zeng X, Tu Y, Zhang Z, You C, Wu J, Ye Z, Zhao J. Transition-Metal-Free One-Step Synthesis of Ynamides. J Org Chem 2019; 84:4458-4466. [PMID: 30843394 DOI: 10.1021/acs.joc.8b03192] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A robust transition-metal-free one-step strategy for the synthesis of ynamides from sulfonamides and ( Z)-1,2-dichloroalkenes or alkynyl chlorides is presented. This method is not only effective for internal ynamides but also amenable for terminal ynamides. Various functional groups, even the vinyl moiety, are compatible, and thus, this strategy offers the opportunity for further functionalization.
Collapse
Affiliation(s)
- Xianzhu Zeng
- Key Laboratory of Chemical Biology of Jiangxi Province, College of Chemistry and Chemical Engineering , Jiangxi Normal University , Nanchang 330022 , People's Republic of China
| | - Yongliang Tu
- Key Laboratory of Chemical Biology of Jiangxi Province, College of Chemistry and Chemical Engineering , Jiangxi Normal University , Nanchang 330022 , People's Republic of China
| | - Zhenming Zhang
- Key Laboratory of Chemical Biology of Jiangxi Province, College of Chemistry and Chemical Engineering , Jiangxi Normal University , Nanchang 330022 , People's Republic of China
| | - Changming You
- Key Laboratory of Chemical Biology of Jiangxi Province, College of Chemistry and Chemical Engineering , Jiangxi Normal University , Nanchang 330022 , People's Republic of China
| | - Jiao Wu
- Key Laboratory of Chemical Biology of Jiangxi Province, College of Chemistry and Chemical Engineering , Jiangxi Normal University , Nanchang 330022 , People's Republic of China
| | - Zhiying Ye
- Key Laboratory of Chemical Biology of Jiangxi Province, College of Chemistry and Chemical Engineering , Jiangxi Normal University , Nanchang 330022 , People's Republic of China
| | - Junfeng Zhao
- Key Laboratory of Chemical Biology of Jiangxi Province, College of Chemistry and Chemical Engineering , Jiangxi Normal University , Nanchang 330022 , People's Republic of China
| |
Collapse
|
32
|
Moskowitz M, Wolf C. Catalytic Enantioselective Ynamide Additions to Isatins: Concise Access to Oxindole Alkaloids. Angew Chem Int Ed Engl 2019; 58:3402-3406. [PMID: 30695127 PMCID: PMC6444906 DOI: 10.1002/anie.201814074] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 01/28/2019] [Indexed: 11/05/2022]
Abstract
The highly enantioselective addition of terminal ynamides to a variety of isatins, catalyzed by a bisoxazolidine copper complex under mild, base-free reaction conditions, is described. The reaction is broad in scope, scalable, applicable to unprotected isatins, and provides efficient access to 3-hydroxyoxindoles carrying a tetrasubstituted chiral center with excellent yields and enantioselectivities. Synthetically versatile, multifunctional 3-hydroxyindolinones are obtained by hydration, partial hydrogenation, or hydroxyacyloxylation of the ynamide moiety at room temperature and exhaustive hydrogenation followed by reductive detosylation and spontaneous cyclization affords cinchonamidine alkaloids.
Collapse
Affiliation(s)
- Max Moskowitz
- Department of Chemistry, Georgetown University, 37 and O Streets, Washington, D.C. 20057 (USA)
| | - Christian Wolf
- Department of Chemistry, Georgetown University, 37 and O Streets, Washington, D.C. 20057 (USA)
| |
Collapse
|
33
|
Golovanov AA, Odin IS, Zlotskii SS. Conjugated enynones: preparation, properties and applications in organic synthesis. RUSSIAN CHEMICAL REVIEWS 2019. [DOI: 10.1070/rcr4808] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
34
|
Moskowitz M, Wolf C. Catalytic Enantioselective Ynamide Additions to Isatins: Concise Access to Oxindole Alkaloids. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201814074] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Max Moskowitz
- Department of Chemistry; Georgetown University; 37 and O Streets Washington DC 20057 USA
| | - Christian Wolf
- Department of Chemistry; Georgetown University; 37 and O Streets Washington DC 20057 USA
| |
Collapse
|
35
|
Reinus B, Kerwin SM. Preparation and Utility of N-Alkynyl Azoles in Synthesis. Molecules 2019; 24:E422. [PMID: 30682796 PMCID: PMC6384649 DOI: 10.3390/molecules24030422] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 01/16/2019] [Accepted: 01/22/2019] [Indexed: 12/05/2022] Open
Abstract
Heteroatom-substituted alkynes have attracted a significant amount of interest in the synthetic community due to the polarized nature of these alkynes and their utility in a wide range of reactions. One specific class of heteroatom-substituted alkynes combines this utility with the presence of an azole moiety. These N-alkynyl azoles have been known for nearly 50 years, but recently there has been a tremendous increase in the number of reports detailing the synthesis and utility of this class of compound. While much of the chemistry of N-alkynyl azoles mirrors that of the more extensively studied N-alkynyl amides (ynamides), there are notable exceptions. In addition, as azoles are extremely common in natural products and pharmaceuticals, these N-alkynyl azoles have high potential for accessing biologically important compounds. In this review, the literature reports of N-alkynyl azole synthesis, reactions, and uses have been assembled. Collectively, these reports demonstrate the growth in this area and the promise of exploiting N-alkynyl azoles in synthesis.
Collapse
Affiliation(s)
- Brandon Reinus
- Department of Chemistry, University of Texas at Austin, Austin, TX 78712, USA.
| | - Sean M Kerwin
- Department of Chemistry & Biochemistry, Texas State University, San Marcos, TX 78666, USA.
| |
Collapse
|
36
|
Nickel-catalyzed regio- and stereoselective hydrophosphinylation of internal ynamides with H-phosphinates. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.10.042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
37
|
Sánchez‐Cantalejo F, Priest JD, Davies PW. A Gold Carbene Manifold to Prepare Fused γ-Lactams by Oxidative Cyclisation of Ynamides. Chemistry 2018; 24:17215-17219. [PMID: 30248205 PMCID: PMC6282577 DOI: 10.1002/chem.201804378] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 09/14/2018] [Indexed: 01/20/2023]
Abstract
Gold-catalysed oxidative cyclisation reactions of ynamides offer great promise in γ-lactam synthesis but are limited by preferential over-oxidation to form α-keto imides. Evaluating the factors that might limit N-cyclisation pathways led to effective gold-catalysed conditions that allow access to different fused γ-lactams on changing the ynamide N-substituent and accommodate previously incompatible substitution patterns. New and efficient methods for the synthesis of functionalised 3-aryl indoles and cyclohepta[c]pyrrol-1-one derivatives are presented. These conditions illustrate the complementarity of gold catalysis to other metals.
Collapse
|
38
|
Prochnow T, Maroneze A, Back DF, Jardim NS, Nogueira CW, Zeni G. Synthesis and anticholinesterase activity of 2-substituted-N-alkynylindoles. Org Biomol Chem 2018; 16:7926-7934. [PMID: 30311614 DOI: 10.1039/c8ob02165a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this paper, we report a protocol for the preparation of 2-substituted-N-alkynylindoles via metalation of N-alkynylindoles followed by the capture of a 2-indolyl lithium intermediate with different electrophiles. The reactivity of the indoles prepared was also demonstrated through the reaction with CBr4/Ph3P for the preparation of 2-gem-dibromovinyl N-alkynylindoles and the hydrotelluration reaction of N-alkynylindoles, which led to vinylic tellurides. Some compounds prepared showed AChE inhibitory potential in the low micromolar range similar to that obtained with donepezil, a commercially available cholinesterase inhibitor.
Collapse
Affiliation(s)
- Thaís Prochnow
- Laboratório de Síntese, Reatividade, Avaliação Farmacológica e Toxicológica de Organocalcogênios, CCNE, UFSM, Santa Maria, Rio Grande do Sul 97105-900, Brasil.
| | | | | | | | | | | |
Collapse
|
39
|
Bernar I, Blanco‐Ania D, Stok SJ, Sotorríos L, Gómez‐Bengoa E, Rutjes FPJT. Synthesis of 3-Amino-1-benzothiophene-1,1-diones by Alkyne Directed Hydroarylation and 1/N→3/C-Sulfonyl Migration. European J Org Chem 2018; 2018:5435-5444. [PMID: 30443160 PMCID: PMC6220774 DOI: 10.1002/ejoc.201801062] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Indexed: 01/26/2023]
Abstract
A completely regioselective and highly stereoselective palladium-catalyzed intramolecular hydroarylation of arenesulfonyl ynamines to benzothiazoles was developed. The presence of an electron-withdrawing group on the triple bond of the sulfonyl ynamine was crucial for the success of the reaction and our mechanistic studies suggest an alkyne-directed 5-exo-dig cyclization pathway. The products easily underwent photoinduced rearrangement to 3-amino-1-benzothiophene-1,1-diones (up to 35 % yields after two steps).
Collapse
Affiliation(s)
- Ivan Bernar
- Radboud UniversityInstitute for Molecules and MaterialsHeyendaalseweg 1356525AJ Nijmegenthe Netherlands
| | - Daniel Blanco‐Ania
- Radboud UniversityInstitute for Molecules and MaterialsHeyendaalseweg 1356525AJ Nijmegenthe Netherlands
| | - Sophie J. Stok
- Radboud UniversityInstitute for Molecules and MaterialsHeyendaalseweg 1356525AJ Nijmegenthe Netherlands
| | - Lia Sotorríos
- Department of Organic Chemistry IUniversity of the Basque Country (UPV/EHU)P.O. Box 107220080Donostia‐San SebastiánSpain
| | - Enrique Gómez‐Bengoa
- Department of Organic Chemistry IUniversity of the Basque Country (UPV/EHU)P.O. Box 107220080Donostia‐San SebastiánSpain
| | - Floris P. J. T. Rutjes
- Radboud UniversityInstitute for Molecules and MaterialsHeyendaalseweg 1356525AJ Nijmegenthe Netherlands
| |
Collapse
|
40
|
Sau MC, Rajesh Y, Mandal M, Bhattacharjee M. Copper Catalyzed Regioselective N – Alkynylation of Pyrazoles and Evaluation of the Anticancer Activity of Ethynyl‐ Pyrazoles. ChemistrySelect 2018. [DOI: 10.1002/slct.201800177] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Mohan Chandra Sau
- Department of ChemistryIndian Institute of Technology Kharagpur 721302 India
| | - Y. Rajesh
- School of Medical Science and TechnologyIndian Institute of Technology Kharagpur 721302 India
| | - Mahitosh Mandal
- School of Medical Science and TechnologyIndian Institute of Technology Kharagpur 721302 India
| | | |
Collapse
|
41
|
Abstract
The title compound, C19H17Cl2NSSi, is an enamine derivative, in which the N atom adopts a shallow trigonal–pyramidal geometry [displacement from the plane of its attached C atoms = 0.1383 (18) Å]. The dihedral angle between the plane through the three amino carbon atoms and the vinyl group is 89.47 (7)°. The phenothiazine unit has a butterfly structure and the central six-membered ring adopts a boat conformation. The fold angle between the benzene rings is 28.52 (7)°. The crystal structure features weak Csp3—H...Cl hydrogen bonds, H...S contacts and π–π stacking interactions between phenothiazine units.
Collapse
|
42
|
Takahashi K, Mamiya N, Fukushima K, Tsubuki M, Honda T. Cs2CO3-Promoted Vinylation of Phenols with Trichloroethylene: Facile Synthesis of (E)-1,2-Dichloro-1-phenoxyethenes. HETEROCYCLES 2018. [DOI: 10.3987/com-18-13953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
43
|
Affiliation(s)
- Yongliang Tu
- Key
Laboratory of Chemical Biology of Jiangxi Province, College of Chemistry
and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, Jiangxi, P. R. China
| | - Xianzhu Zeng
- Key
Laboratory of Chemical Biology of Jiangxi Province, College of Chemistry
and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, Jiangxi, P. R. China
| | - Hui Wang
- Key
Laboratory of Chemical Biology of Jiangxi Province, College of Chemistry
and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, Jiangxi, P. R. China
| | - Junfeng Zhao
- Key
Laboratory of Chemical Biology of Jiangxi Province, College of Chemistry
and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, Jiangxi, P. R. China
- State
Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| |
Collapse
|
44
|
Alexander JR, Cook MJ. Formation of Ketenimines via the Palladium-Catalyzed Decarboxylative π-Allylic Rearrangement of N-Alloc Ynamides. Org Lett 2017; 19:5822-5825. [DOI: 10.1021/acs.orglett.7b02780] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Juliana R. Alexander
- School
of Chemistry and Chemical Engineering, Queen’s University Belfast, Belfast BT9 5AG, Northern Ireland
- Department
of Chemistry and Biochemistry, Montana State University, Bozeman, Montana 59717, United States
| | - Matthew J. Cook
- School
of Chemistry and Chemical Engineering, Queen’s University Belfast, Belfast BT9 5AG, Northern Ireland
- Department
of Chemistry and Biochemistry, Montana State University, Bozeman, Montana 59717, United States
| |
Collapse
|
45
|
Mansfield SJ, Christensen KE, Thompson AL, Ma K, Jones MW, Mekareeya A, Anderson EA. Copper-Catalyzed Synthesis and Applications of Yndiamides. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201706915] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
| | | | | | - Kai Ma
- Chemistry Research Laboratory; 12 Mansfield Road Oxford OX1 3TA UK
| | - Michael W. Jones
- Chemistry Research Laboratory; 12 Mansfield Road Oxford OX1 3TA UK
| | | | | |
Collapse
|
46
|
Mansfield SJ, Christensen KE, Thompson AL, Ma K, Jones MW, Mekareeya A, Anderson EA. Copper-Catalyzed Synthesis and Applications of Yndiamides. Angew Chem Int Ed Engl 2017; 56:14428-14432. [DOI: 10.1002/anie.201706915] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 08/11/2017] [Indexed: 11/11/2022]
Affiliation(s)
| | | | | | - Kai Ma
- Chemistry Research Laboratory; 12 Mansfield Road Oxford OX1 3TA UK
| | - Michael W. Jones
- Chemistry Research Laboratory; 12 Mansfield Road Oxford OX1 3TA UK
| | | | | |
Collapse
|
47
|
|
48
|
Garzón M, Arce EM, Reddy RJ, Davies PW. General Entry into o
-,o′
-Heteroatom-Linked N
-(Hetero)aryl-Imidazole Motifs by Gold-Catalysed Formal [3+2]-Dipolar Cycloaddition. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700249] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Miguel Garzón
- School of Chemistry; University of Birmingham; Birmingham B15 2TT UK
| | - Elsa M. Arce
- School of Chemistry; University of Birmingham; Birmingham B15 2TT UK
| | | | - Paul W. Davies
- School of Chemistry; University of Birmingham; Birmingham B15 2TT UK
| |
Collapse
|
49
|
Wezeman T, Comas-Barceló J, Nieger M, Harrity JPA, Bräse S. Synthesis of aminopyrazoles from sydnones and ynamides. Org Biomol Chem 2017; 15:1575-1579. [DOI: 10.1039/c6ob02518h] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Both copper-catalyzed and strain-mediated cycloadditions between ynamides and sydnones allow for a novel synthetic access to aminopyrazoles.
Collapse
Affiliation(s)
- T. Wezeman
- Institute of Organic Chemistry (IOC)
- Karlsruhe Institute of Technology (KIT)
- 76131 Karlsruhe
- Germany
| | | | - M. Nieger
- Department of Chemistry
- University of Helsinki
- Finland
| | | | - S. Bräse
- Institute of Organic Chemistry (IOC)
- Karlsruhe Institute of Technology (KIT)
- 76131 Karlsruhe
- Germany
- Institute of Toxicology and Genetics (ITG)
| |
Collapse
|
50
|
Wang T, Hoye TR. Hexadehydro-Diels-Alder (HDDA)-Enabled Carbazolyne Chemistry: Single Step, de Novo Construction of the Pyranocarbazole Core of Alkaloids of the Murraya koenigii (Curry Tree) Family. J Am Chem Soc 2016; 138:13870-13873. [PMID: 27734671 DOI: 10.1021/jacs.6b09628] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Here we report the use of the hexadehydro-Diels-Alder (HDDA) reaction for the de novo construction of a benzenoid ring in fused polycyclic heteroaromatic carbazole (i.e., [2,3]-benzoindole) skeletons. The strategy allows creation of highly substituted benzenoids. We also describe the HDDA-enabled chemical synthesis of the natural product alkaloids mahanimbine and koenidine. Trapping of the intermediate carbazolyne with a conjugated enal, proceeding through formal [2+2] cycloaddition, 4π-electrocyclic ring opening, and 6π-electrocyclic ring-closing events, constitutes a robust method for producing pyranocarbazoles.
Collapse
Affiliation(s)
- Tao Wang
- Department of Chemistry, 207 Pleasant Street, SE, University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Thomas R Hoye
- Department of Chemistry, 207 Pleasant Street, SE, University of Minnesota , Minneapolis, Minnesota 55455, United States
| |
Collapse
|