1
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Saeb R, Boulenger B, Cornella J. "Naked Nickel"-Catalyzed Amination of Heteroaryl Bromides. Org Lett 2024; 26:5928-5933. [PMID: 38967981 PMCID: PMC11267598 DOI: 10.1021/acs.orglett.4c01738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2024] [Revised: 06/28/2024] [Accepted: 06/28/2024] [Indexed: 07/07/2024]
Abstract
In this Letter, we report that the air-stable "naked nickel" [Ni(4-tBustb)3] is a competent catalyst in thermal C-N bond formation between (hetero)aryl bromides and N-based nucleophiles. The catalytic system is characterized by a "naked nickel" complex and Zn and by the absence of external light sources, photocatalysts, exogenous ligands, and electrical setups. Upon application of this method, various heteroaryls bearing Lewis-basic heteroatoms can be accommodated and directly aminated with a set of primary and secondary amines.
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Affiliation(s)
- Rakan Saeb
- Max-Planck-Institut für
Kohlenforschung, Department of Organometallic
Chemistry, Kaiser-Wilhelm-Platz
1, 45470 Mülheim
an der Ruhr, North Rhine-Westphalia, Germany
| | - Bryan Boulenger
- Max-Planck-Institut für
Kohlenforschung, Department of Organometallic
Chemistry, Kaiser-Wilhelm-Platz
1, 45470 Mülheim
an der Ruhr, North Rhine-Westphalia, Germany
| | - Josep Cornella
- Max-Planck-Institut für
Kohlenforschung, Department of Organometallic
Chemistry, Kaiser-Wilhelm-Platz
1, 45470 Mülheim
an der Ruhr, North Rhine-Westphalia, Germany
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2
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Wei SQ, Li ZH, Wang SH, Chen H, Wang XY, Gu YZ, Zhang Y, Wang H, Ding TM, Zhang SY, Tu YQ. Asymmetric Intramolecular Amination Catalyzed with Cp*Ir-SPDO via Nitrene Transfer for Synthesis of Spiro-Quaternary Indolinone. J Am Chem Soc 2024; 146:18841-18847. [PMID: 38975938 DOI: 10.1021/jacs.4c05560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/09/2024]
Abstract
An asymmetric intramolecular spiro-amination to high steric hindering α-C-H bond of 1,3-dicarbonyl via nitrene transfer using inactive aryl azides has been carried out by developing a novel Cp*Ir(III)-SPDO (spiro-pyrrolidine oxazoline) catalyst, thereby enabling the first successful construction of structurally rigid spiro-quaternary indolinone cores with moderate to high yields and excellent enantioselectivities. DFT computations support the presence of double bridging H-F bonds between [SbF6]- and both the ligand and substrate, which favors the plane-differentiation of the enol π-bond for nitrenoid attacking. These findings open up numerous opportunities for the development of new asymmetric nitrene transfer systems.
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Affiliation(s)
- Shi-Qiang Wei
- School of Chemistry and Chemical Engineering, Frontier Scientific Center of Transformative Molecules, Shanghai Key Laboratory of Chiral Drugs and Engineering, Shanghai Jiao Tong University, Shanghai, Minhang 200240, China
| | - Zi-Hao Li
- School of Chemistry and Chemical Engineering, Frontier Scientific Center of Transformative Molecules, Shanghai Key Laboratory of Chiral Drugs and Engineering, Shanghai Jiao Tong University, Shanghai, Minhang 200240, China
| | - Shuang-Hu Wang
- School of Chemistry and Chemical Engineering, Frontier Scientific Center of Transformative Molecules, Shanghai Key Laboratory of Chiral Drugs and Engineering, Shanghai Jiao Tong University, Shanghai, Minhang 200240, China
| | - Hua Chen
- College of Pharmaceutical Science and Collaborative Innovation Cent of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, China
| | - Xiao-Yu Wang
- School of Chemistry and Chemical Engineering, Frontier Scientific Center of Transformative Molecules, Shanghai Key Laboratory of Chiral Drugs and Engineering, Shanghai Jiao Tong University, Shanghai, Minhang 200240, China
| | - Yun-Zhou Gu
- School of Chemistry and Chemical Engineering, Frontier Scientific Center of Transformative Molecules, Shanghai Key Laboratory of Chiral Drugs and Engineering, Shanghai Jiao Tong University, Shanghai, Minhang 200240, China
| | - Ye Zhang
- School of Chemistry and Chemical Engineering, Frontier Scientific Center of Transformative Molecules, Shanghai Key Laboratory of Chiral Drugs and Engineering, Shanghai Jiao Tong University, Shanghai, Minhang 200240, China
| | - Hong Wang
- College of Pharmaceutical Science and Collaborative Innovation Cent of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, China
| | - Tong-Mei Ding
- School of Chemistry and Chemical Engineering, Frontier Scientific Center of Transformative Molecules, Shanghai Key Laboratory of Chiral Drugs and Engineering, Shanghai Jiao Tong University, Shanghai, Minhang 200240, China
| | - Shu-Yu Zhang
- School of Chemistry and Chemical Engineering, Frontier Scientific Center of Transformative Molecules, Shanghai Key Laboratory of Chiral Drugs and Engineering, Shanghai Jiao Tong University, Shanghai, Minhang 200240, China
| | - Yong-Qiang Tu
- School of Chemistry and Chemical Engineering, Frontier Scientific Center of Transformative Molecules, Shanghai Key Laboratory of Chiral Drugs and Engineering, Shanghai Jiao Tong University, Shanghai, Minhang 200240, China
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
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3
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Chen Z, Song G, Qi L, Gunasekar R, Aïssa C, Robertson C, Steiner A, Xue D, Xiao J. Reductive Transamination of Pyridinium Salts to N-Aryl Piperidines. J Org Chem 2024; 89:9352-9359. [PMID: 38872240 PMCID: PMC11232014 DOI: 10.1021/acs.joc.4c00493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 05/30/2024] [Accepted: 06/05/2024] [Indexed: 06/15/2024]
Abstract
Saturated N-heterocycles are found in numerous bioactive natural products and are prevalent in pharmaceuticals and agrochemicals. While there are many methods for their synthesis, each has its limitations, such as scope and functional group tolerance. Herein, we describe a rhodium-catalyzed transfer hydrogenation of pyridinium salts to access N-(hetero)aryl piperidines. The reaction proceeds via a reductive transamination process, involving the initial formation of a dihydropyridine intermediate via reduction of the pyridinium ion with HCOOH, which is intercepted by water and then hydrolyzed. Subsequent reductive amination with an exogenous (hetero)aryl amine affords an N-(hetero)aryl piperidine. This reductive transamination method thus allows for access of N-(hetero)aryl piperidines from readily available pyridine derivatives, expanding the toolbox of dearomatization and skeletal editing.
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Affiliation(s)
- Zhenyu Chen
- Department
of Chemistry, University of Liverpool, Liverpool L69 7ZD, U.K.
| | - Geyang Song
- Key
Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education
and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, China
| | - Leiming Qi
- Department
of Chemistry, University of Liverpool, Liverpool L69 7ZD, U.K.
| | | | - Christophe Aïssa
- Department
of Chemistry, University of Liverpool, Liverpool L69 7ZD, U.K.
| | - Craig Robertson
- Department
of Chemistry, University of Liverpool, Liverpool L69 7ZD, U.K.
| | - Alexander Steiner
- Department
of Chemistry, University of Liverpool, Liverpool L69 7ZD, U.K.
| | - Dong Xue
- Key
Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education
and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, China
| | - Jianliang Xiao
- Department
of Chemistry, University of Liverpool, Liverpool L69 7ZD, U.K.
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4
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Okuda Y, Sato T, Takebe S, Mori M, Fujimoto M, Masuda K, Sabato T, Wakamatsu K, Akashi H, Orita A. Chemodivergent Synthesis of Polycyclic Aromatic Diarylamines and Carbazoles by Thermal/Photochemical Process-Controlled Dephosphinylative Functionalizations of Amino(phosphinyl)arenes. J Org Chem 2024. [PMID: 38770947 DOI: 10.1021/acs.joc.4c00432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
A chemodivergent synthesis of polycyclic aromatic diarylamines and carbazoles was established by employing thermally or photochemically controlled processes using KOtBu/1,10-phenanthroline. The synthetic processes involved the dephosphinylation of 9-amino-10-(phosphinyl)phenanthrenes, which were obtained through a regioselective palladium-catalyzed direct [4 + 2] benzannulation of phosphinyl ynamines with 2-iodobiphenyls. When the dephosphinylation was conducted under heating conditions (∼100 °C), it proceeded to yield 9-aminophenanthrene. However, when the reaction was performed under the illumination of purple light (LEDs, λmax = ca. 390 nm), KOtBu/1,10-phenanthroline promoted single-electron-transfer-triggered dephosphinylation followed by cyclization, producing the corresponding π-expanded carbazoles. We successfully synthesized a highly π-expanded dicarbazole through a dual dephosphinylative cyclization. Additionally, we present the optical properties of a series of amino compounds produced through the dephosphinylative processes.
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Affiliation(s)
- Yasuhiro Okuda
- Department of Applied Chemistry, Faculty of Engineering, Okayama University of Science, 1-1 Ridai-cho, Kita-ku, Okayama 700-0005, Japan
| | - Takuma Sato
- Department of Applied Chemistry, Faculty of Engineering, Okayama University of Science, 1-1 Ridai-cho, Kita-ku, Okayama 700-0005, Japan
| | - Sou Takebe
- Department of Applied Chemistry, Faculty of Engineering, Okayama University of Science, 1-1 Ridai-cho, Kita-ku, Okayama 700-0005, Japan
| | - Matsuri Mori
- Department of Applied Chemistry, Faculty of Engineering, Okayama University of Science, 1-1 Ridai-cho, Kita-ku, Okayama 700-0005, Japan
| | - Mayo Fujimoto
- Department of Applied Chemistry, Faculty of Engineering, Okayama University of Science, 1-1 Ridai-cho, Kita-ku, Okayama 700-0005, Japan
| | - Kazunori Masuda
- Department of Applied Chemistry, Faculty of Engineering, Okayama University of Science, 1-1 Ridai-cho, Kita-ku, Okayama 700-0005, Japan
| | - Taisei Sabato
- Department of Applied Chemistry, Faculty of Engineering, Okayama University of Science, 1-1 Ridai-cho, Kita-ku, Okayama 700-0005, Japan
| | - Kan Wakamatsu
- Department of Chemistry, Faculty of Science, Okayama University of Science, 1-1 Ridai-cho, Kita-ku, Okayama 700-0005, Japan
| | - Haruo Akashi
- Institute of Frontier Science and Technology, Okayama University of Science, 1-1 Ridai-cho, Kita-ku, Okayama 700-0005, Japan
| | - Akihiro Orita
- Department of Applied Chemistry, Faculty of Engineering, Okayama University of Science, 1-1 Ridai-cho, Kita-ku, Okayama 700-0005, Japan
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5
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Teimouri M, Raju S, Acheampong E, Schmittou AN, Donnadieu B, Wipf DO, Pierce BS, Stokes SL, Emerson JP. Aminoquinoline-Based Tridentate ( NNN)-Copper Catalyst for C-N Bond-Forming Reactions from Aniline and Diazo Compounds. Molecules 2024; 29:730. [PMID: 38338473 PMCID: PMC10856582 DOI: 10.3390/molecules29030730] [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: 12/19/2023] [Revised: 01/23/2024] [Accepted: 01/28/2024] [Indexed: 02/12/2024] Open
Abstract
A new tridentate Cu2+ complex based on (E)-1-(pyridin-2-yl)-N-(quinolin-8-yl)methanimine (PQM) was generated and characterized to support the activation of diazo compounds for the formation of new C-N bonds. This neutral Schiff base ligand was structurally characterized to coordinate with copper(II) in an equatorial fashion, yielding a distorted octahedral complex. Upon characterization, this copper(II) complex was used to catalyze an efficient and cost-effective protocol for C-N bond formation between N-nucleophiles and copper carbene complexes arising from the activation of diazo carbonyl compounds. A substrate scope of approximately 15 different amine-based substrates was screened, yielding 2° or 3° amine products with acceptable to good yields under mild reaction conditions. Reactivity towards phenol and thiophenol were also screened, showing relatively weak C-O or C-S bond formation under optimized conditions.
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Affiliation(s)
- Mohsen Teimouri
- Department of Chemistry, Mississippi State University, Starkville, MS 39762, USA (B.D.); (D.O.W.)
| | - Selvam Raju
- Department of Chemistry, Mississippi State University, Starkville, MS 39762, USA (B.D.); (D.O.W.)
| | - Edward Acheampong
- Department of Chemistry, Mississippi State University, Starkville, MS 39762, USA (B.D.); (D.O.W.)
| | - Allison N. Schmittou
- Department of Chemistry and Biochemistry, The University of Alabama, 3097D Shelby Hall, Tuscaloosa, AL 35487, USA
| | - Bruno Donnadieu
- Department of Chemistry, Mississippi State University, Starkville, MS 39762, USA (B.D.); (D.O.W.)
| | - David O. Wipf
- Department of Chemistry, Mississippi State University, Starkville, MS 39762, USA (B.D.); (D.O.W.)
| | - Brad S. Pierce
- Department of Chemistry and Biochemistry, The University of Alabama, 3097D Shelby Hall, Tuscaloosa, AL 35487, USA
| | - Sean L. Stokes
- Department of Chemistry, Mississippi State University, Starkville, MS 39762, USA (B.D.); (D.O.W.)
| | - Joseph P. Emerson
- Department of Chemistry, Mississippi State University, Starkville, MS 39762, USA (B.D.); (D.O.W.)
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6
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Umabharathi SB, Neetha M, Anilkumar G. Palladium N-Heterocyclic Carbene-Catalyzed Aminations: An Outline. Top Curr Chem (Cham) 2024; 382:3. [PMID: 38265533 DOI: 10.1007/s41061-024-00449-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 01/04/2024] [Indexed: 01/25/2024]
Abstract
Amination reactions play a pivotal role in synthetic organic chemistry, facilitating the generation of nitrogen-containing scaffolds with broad applications in drug synthesis, material production, polymer formation, and the generation of amino acids and peptides. Amination offers the potential to fine tune the properties of natural products and produce functional materials for various applications. Palladium N-heterocyclic carbene (Pd-NHC) emerges as an innovative and highly effective catalyst in this context. Under favorable reaction conditions, this robust and simple catalyst efficiently facilitates the synthesis of a diverse range of compounds with varying complexity and utility. Pd-NHC complexes exhibit significant σ-electron donating potential, enhancing the ease of the oxidative addition process in their mechanistic pathway. Their steric topography further contributes to a rapid reductive elimination. These complexes demonstrate remarkable stability, a result of the strong Pd-ligand bond. The wide variety of Pd-NHC complexes has proven highly efficient in catalyzing reactions across a spectrum of complexities, from simple to intricate. The domain of aminations catalyzed by Pd-NHC has undergone significant diversification, presenting new opportunities, particularly in the realms of material chemistry and natural product synthesis. This review outlines the advancements in Pd-NHC-catalyzed amination reactions, covering literature up to date.
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Affiliation(s)
- S B Umabharathi
- School of Physical Sciences, Amrita Vishwa Vidyapeetham, Amritapuri Campus, Clappana P. O., Kollam, Kerala, 690525, India
| | - Mohan Neetha
- School of Chemical Sciences, Mahatma Gandhi University, Priyadarsini Hills P. O., Kottayam, Kerala, 686560, India
| | - Gopinathan Anilkumar
- School of Chemical Sciences, Mahatma Gandhi University, Priyadarsini Hills P. O., Kottayam, Kerala, 686560, India.
- Institute for Integrated Programs and Research in Basic Sciences (IIRBS), Mahatma Gandhi University, Priyadarsini Hills P. O., Kottayam, Kerala, 686560, India.
- Advanced Molecular Materials Research Center (AMMRC), Mahatma Gandhi University, Priyadarsini Hills P. O., Kottayam, Kerala, 686560, India.
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7
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Kayastha N, Dutta D, Chutia K, Das B, Gogoi P. Synthesis and Photophysical Properties of 3-Substituted-1 H-Indazoles: A Pd-Catalyzed Double C-N Bond Formation Strategy via 1,6-Conjugate Addition. J Org Chem 2024; 89:402-413. [PMID: 38064714 DOI: 10.1021/acs.joc.3c02176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
A Pd-catalyzed cascade process for the direct synthesis of 3-substituted-1H-indazole employing p-quinone methide (p-QM) and arylhydrazine through Pd-catalyzed double C-N bond formation via 1,6-conjugate addition is reported. This reaction strategy affords efficient and practical access to synthetically important diverse 3-substituted-1H-indazoles in good yields. The photophysical properties of the synthesized 3-substituted-1H-indazoles are investigated, and some of them showed very good fluorescence properties with quantum yields up to 85%. Also, the synthesized 3-substituted-1H-indazole exhibits an acid-sensitive fluorescence turn-off activity.
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Affiliation(s)
- Nasib Kayastha
- Applied Organic Chemistry Group, Chemical Science and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, Assam, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Dhiraj Dutta
- Applied Organic Chemistry Group, Chemical Science and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, Assam, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Kangkana Chutia
- Applied Organic Chemistry Group, Chemical Science and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, Assam, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Babulal Das
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Pranjal Gogoi
- Applied Organic Chemistry Group, Chemical Science and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, Assam, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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8
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Romanelli MN, Braconi L, Gabellini A, Manetti D, Marotta G, Teodori E. Synthetic Approaches to Piperazine-Containing Drugs Approved by FDA in the Period of 2011-2023. Molecules 2023; 29:68. [PMID: 38202651 PMCID: PMC10780301 DOI: 10.3390/molecules29010068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 12/15/2023] [Accepted: 12/18/2023] [Indexed: 01/12/2024] Open
Abstract
The piperazine moiety is often found in drugs or in bioactive molecules. This widespread presence is due to different possible roles depending on the position in the molecule and on the therapeutic class, but it also depends on the chemical reactivity of piperazine-based synthons, which facilitate its insertion into the molecule. In this paper, we take into consideration the piperazine-containing drugs approved by the Food and Drug Administration between January 2011 and June 2023, and the synthetic methodologies used to prepare the compounds in the discovery and process chemistry are reviewed.
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Affiliation(s)
- Maria Novella Romanelli
- Section of Pharmaceutical and Nutraceutical Science, Department of Neurosciences, Psychology, Drug Research and Child Health (NEUROFARBA), University of Florence, Via Ugo Schiff, 6, Sesto Fiorentino, 50019 Florence, Italy; (L.B.); (A.G.); (D.M.); (G.M.); (E.T.)
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9
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Waddell PM, Tian L, Scavuzzo AR, Venigalla L, Scholes GD, Carrow BP. Visible light-induced palladium-carbon bond weakening in catalytically relevant T-shaped complexes. Chem Sci 2023; 14:14217-14228. [PMID: 38098701 PMCID: PMC10717500 DOI: 10.1039/d3sc02588h] [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: 05/23/2023] [Accepted: 10/26/2023] [Indexed: 12/17/2023] Open
Abstract
Triggering one-electron redox processes during palladium catalysis holds the potential to unlock new reaction mechanisms and synthetic methods not previously accessible in the typical two-electron reaction manifolds that dominate palladium catalysis. We report that T-shaped organopalladium(ii) complexes coordinated by a bulky monophosphine, a class of organometallic intermediate featured in a range of contemporary catalytic reactions, undergo blue light-promoted bond weakening leading to mild and efficient homolytic cleavage of strong Pd(ii)-C(sp3) bonds under ambient conditions. The origin of light-triggered radical formation in these systems, which lack an obvious ligand-based chromophore (i.e., π-systems), was investigated using a combination of DFT calculations, photoactinometry, and transient absorption spectroscopy. The available data suggest T-shaped organopalladium(ii) complexes manifest unusual blue light-accessible Pd-to-C(sp3) transition. The quantum efficiency and excited state lifetime of this process were unexpectedly superior compared to a prototypical (α-diimine)Pd(ii) complex featuring a low-lying, ligand-centered LUMO (π*). These results suggest coordinatively-unsaturated organopalladium(ii) compounds, catalysts in myriad catalytic processes, have untapped potential for one-electron reactivity under visible light excitation.
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Affiliation(s)
- Peter M Waddell
- Department of Chemistry, Princeton University Princeton NJ 08544 USA
| | - Lei Tian
- Department of Chemistry, Princeton University Princeton NJ 08544 USA
| | | | - Lalu Venigalla
- Department of Chemistry, University of Houston Houston TX 77204 USA
| | - Gregory D Scholes
- Department of Chemistry, Princeton University Princeton NJ 08544 USA
| | - Brad P Carrow
- Department of Chemistry, University of Houston Houston TX 77204 USA
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10
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Yadav P, Kumar P. External electric field, a potential catalyst for C-N cross-coupling reaction. Phys Chem Chem Phys 2023. [PMID: 38047469 DOI: 10.1039/d3cp04723g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2023]
Abstract
The present work investigates the role of the external electric field (EEF) in boosting the C-N cross-coupling reaction between 2-chlorobenzoic acid and propylamine, by computing the reaction rates and energy barrier. The investigation suggests that the reaction can become barrierless by choosing an electric field in the appropriate direction, resulting in a quadrillionfold increase in the reaction rate in the presence of an EEF. We also found that the efficiency of the electric field depends on the dipole moment of the reactants, and hence, the results of the present work are general in nature and should be applicable to a variety of C-N cross-coupling reactions.
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Affiliation(s)
- Priyanka Yadav
- Department of Chemistry, Malaviya National Institute of Technology Jaipur, Jaipur, 302017, India.
| | - Pradeep Kumar
- Department of Chemistry, Malaviya National Institute of Technology Jaipur, Jaipur, 302017, India.
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11
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Krishna Rao MV, Kareem S, Vali SR, Subba Reddy BV. Recent advances in metal directed C-H amidation/amination using sulfonyl azides and phosphoryl azides. Org Biomol Chem 2023; 21:8426-8462. [PMID: 37831479 DOI: 10.1039/d3ob01160g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2023]
Abstract
Transition metal-catalyzed C-N bond formation reactions have gained popularity as a method for selectively transforming common C-H bonds into N-functionalized molecules. This approach is particularly useful for synthesizing aminated molecules, which require aminating reagents and amidated building blocks. Over the past two decades, significant advancements have been achieved in transition-metal-catalyzed C-H functionalization, with organic azides emerging as promising amino sources and internal oxidants. This review focuses on recent developments in utilizing sulfonyl and phosphoryl azides as building blocks for directed intra- and intermolecular C-H functionalization reactions. Specifically, it discusses methods for synthesizing sulfonamidates and phosphoramidates using sulfonyl and phosphoryl azides, respectively. The article highlights the potential of C-H functionalization reactions with organic azides for efficiently and sustainably synthesizing N-functionalized molecules, providing valuable insights into the latest advancements in this field.
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Affiliation(s)
- M V Krishna Rao
- Department of Fluoro & Agrochemicals, CSIR-Indian Institute of Chemical Technology, Hyderabad-500 007, India.
| | - Shaik Kareem
- Department of Fluoro & Agrochemicals, CSIR-Indian Institute of Chemical Technology, Hyderabad-500 007, India.
| | - Shaik Ramjan Vali
- Department of Fluoro & Agrochemicals, CSIR-Indian Institute of Chemical Technology, Hyderabad-500 007, India.
| | - B V Subba Reddy
- Department of Fluoro & Agrochemicals, CSIR-Indian Institute of Chemical Technology, Hyderabad-500 007, India.
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12
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Manikanttha M, Deepti K, Tej MB, Tej MB, Gopi Reddy A, Kapavarapu R, Barange DK, V Basaveswara Rao M, Pal M. Ultrasound assisted Cu-catalyzed Ullmann-Goldberg type coupling-cyclization in a single pot: Synthesis and in silico evaluation of 11 H-pyrido[2,1- b]quinazolin-11-ones against SARS-CoV-2 RdRp. J Mol Struct 2023; 1280:135044. [PMID: 36743447 PMCID: PMC9884102 DOI: 10.1016/j.molstruc.2023.135044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 01/13/2023] [Accepted: 01/26/2023] [Indexed: 01/30/2023]
Abstract
The in silico evaluation of 11H-pyrido[2,1-b]quinazolin-11-one derivatives against SARS-CoV-2 RdRp was undertaken based on the reports on antiviral activities of this class of compounds in addition to the promising interactions of the antiviral drug penciclovir as well as quinazoline derivatives with SARS-CoV-2 RdRp in silico. The target compounds were prepared via an Ullmann-Goldberg type coupling followed by the subsequent cyclization (involving amidation) in a single pot. The methodology involved a CuI-catalyzed reaction of 2-iodobenzoate ester with 2-aminopyridine or quinolin-2-amine or thiazol-2-amine under ultrasound to give the expected products in acceptable (51-93%) yields. The molecular interactions of the synthesized 11H-pyrido[2,1-b]quinazolin-11-one derivatives with the SARS-CoV-2 RdRp (PDB: 7AAP) were evaluated in silico. The study suggested that though none of these compounds showed interactions better than penciclovir but the compound 3a and 3n appeared to be comparable along with 3b seemed to be nearly comparable to favipiravir and remdesivir. The compound 3n with the best binding energy (-79.85 Kcal/mol) participated in the H-bond interactions through its OMe group with THR556 as well as ARG624 and via the N-5 atom with the residue SER682. The in silico studies further suggested that majority of the compounds interacted with the main cavity of active site pocket whereas 3h and 3o that showed relatively lower binding energies (-66.06 and -66.28 Kcal/mol) interacted with the shallow cavity underneath the active site of SARS CoV-2 RdRp. The study also revealed that a OMe group was favourable for interaction with respect to its position in the order C-8 > C-1 > C-2. Further, the presence of a fused quinoline ring was tolerated whereas a fused thiazole ring decreased the interaction significantly. The in silico predictions of pharmacokinetic properties of 3a, 3b and 3n indicated that besides the BBB (Blood Brain Barrier) penetration potential these molecules may show a good overall ADME. Overall, the regioisomers 3a, 3b and 3n have emerged as molecules of possible interest in the context of targeting COVID-19.
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Affiliation(s)
- Matta Manikanttha
- Department of Chemistry, Koneru Lakshmaiah Education Foundation, Greenfields, Vaddeswaram, Guntur, Andhra Pradesh 522 502, India
| | - Kolli Deepti
- Department of Chemistry, Koneru Lakshmaiah Education Foundation, Greenfields, Vaddeswaram, Guntur, Andhra Pradesh 522 502, India
| | - Mandava Bhuvan Tej
- Department of Healthcare informatics, Sacred Heart University, 5151 Park Avenue, Fair fields, Connecticut CT06825, USA
| | - Mandava Bhagya Tej
- Department of MBBS, NRI Academi of Medical Sciences, Chinakakani, Guntur, Andhra Pradesh 522503, India
| | - A. Gopi Reddy
- Department of Pharmaceutical Chemistry, SANA College of Pharmacy, Kodad, Telangana, India
| | - Ravikumar Kapavarapu
- Department of Pharmaceutical Chemistry and Phytochemistry, Nirmala College of Pharmacy, Mangalagiri, Andhra Pradesh, India
| | | | - M. V Basaveswara Rao
- Department of Chemistry, Krishna University, Krishna District, Andhra Pradesh, India,Corresponding authors
| | - Manojit Pal
- Dr. Reddy's Institute of Life Sciences, University of Hyderabad Campus, Hyderabad 500046, India,Corresponding authors
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13
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Caiger L, Zhao H, Constantin T, Douglas JJ, Leonori D. The Merger of Aryl Radical-Mediated Halogen-Atom Transfer (XAT) and Copper Catalysis for the Modular Cross-Coupling-Type Functionalization of Alkyl Iodides. ACS Catal 2023. [DOI: 10.1021/acscatal.3c00571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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14
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Molnár Á. Recent Advances in the Synthesis of Five‐membered Nitrogen Heterocycles Induced by Palladium Ions and Complexes. ChemistrySelect 2023. [DOI: 10.1002/slct.202300153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Affiliation(s)
- Árpád Molnár
- Department of Organic Chemistry University of Szeged Dóm tér 8 6720 Szeged Hungary
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15
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Migliorini F, Monciatti E, Romagnoli G, Parisi ML, Taubert J, Vogt M, Langer R, Petricci E. Switching Mechanistic Pathways by Micellar Catalysis: A Highly Selective Rhodium Catalyst for the Hydroaminomethylation of Olefins with Anilines in Water. ACS Catal 2023. [DOI: 10.1021/acscatal.2c06104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Affiliation(s)
- Francesca Migliorini
- Department of Biochemistry, Chemistry and Pharmacy - University of Siena, Via A. Moro, 2, 53100 Siena, Italy
| | - Elisabetta Monciatti
- Department of Biochemistry, Chemistry and Pharmacy - University of Siena, Via A. Moro, 2, 53100 Siena, Italy
| | - Giulia Romagnoli
- Department of Biochemistry, Chemistry and Pharmacy - University of Siena, Via A. Moro, 2, 53100 Siena, Italy
| | - Maria Laura Parisi
- Department of Biochemistry, Chemistry and Pharmacy - University of Siena, Via A. Moro, 2, 53100 Siena, Italy
| | - Julia Taubert
- Naturwissenschaftliche Fakultät II - Institut für Chemie, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Str. 2, D-06120 Halle, Germany
| | - Matthias Vogt
- Naturwissenschaftliche Fakultät II - Institut für Chemie, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Str. 2, D-06120 Halle, Germany
| | - Robert Langer
- Naturwissenschaftliche Fakultät II - Institut für Chemie, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Str. 2, D-06120 Halle, Germany
| | - Elena Petricci
- Department of Biochemistry, Chemistry and Pharmacy - University of Siena, Via A. Moro, 2, 53100 Siena, Italy
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16
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Liang JX, Yang PF, Shu W. Synthesis of (Hetero)aryl/Alkenyl Iodides via Ni-Catalyzed Finkelstein Reaction from Bromides or Chlorides. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Jian-Xing Liang
- Shenzhen Grubbs Institute, Department of Chemistry, and Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, Guangdong, P. R. China
| | - Peng-Fei Yang
- Shenzhen Grubbs Institute, Department of Chemistry, and Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, Guangdong, P. R. China
| | - Wei Shu
- Shenzhen Grubbs Institute, Department of Chemistry, and Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, Guangdong, P. R. China
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17
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Mahato SK, Zhang T, Chatani N. Ir(III)-Catalyzed C(sp 2)–H Amidation of 2-Aroylimidazoles with 2,2,2-Trichloroethoxycarbonyl Azide (TrocN 3). J Org Chem 2022; 87:16390-16398. [DOI: 10.1021/acs.joc.2c02056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sanjit K. Mahato
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
- Chemistry At CreAgro (Discovery), PI Industries Ltd., Udaipur, Rajasthan 313001, India
| | - Tianhao Zhang
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Naoto Chatani
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
- Research Center for Environmental Preservation, Osaka University, 2-4 Yamadaoka, Suita, Osaka 565-0871, Japan
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18
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Recent green synthetic approaches toward Ullmann reaction: a review. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-022-02424-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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19
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Li MY, Wei D, Feng CG, Lin GQ. Tandem Reactions involving 1,4‐Palladium Migrations. Chem Asian J 2022; 17:e202200456. [PMID: 35661425 DOI: 10.1002/asia.202200456] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 06/01/2022] [Indexed: 11/08/2022]
Affiliation(s)
- Meng-Yao Li
- Shanghai Cancer Institute Shanghai Jiao Tong University School of Medicine 1630 Dongfang Road 200127 Shanghai CHINA
| | - Dong Wei
- Shanghai Jiao Tong University General Surgery No.1665 Kongjiang Road, Shanghai 200092 Shanghai CHINA
| | - Cheng-Guo Feng
- Chinese Academy of Sciences Shanghai Institute of Organic Chemistry CAS Key Laboratory of Synthetic Chemistry of Natural Substances CHINA
| | - Guo-Qiang Lin
- Chinese Academy of Sciences Shanghai Institute of Organic Chemistry CAS Key Laboratory of Synthetic Chemistry of Natural Substances CHINA
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20
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Purtsas A, Rosenkranz M, Dmitrieva E, Kataeva O, Knölker HJ. Iron-Catalyzed Oxidative C-O and C-N Coupling Reactions Using Air as Sole Oxidant. Chemistry 2022; 28:e202104292. [PMID: 35179270 PMCID: PMC9314016 DOI: 10.1002/chem.202104292] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Indexed: 01/31/2023]
Abstract
We describe the oxygenation of tertiary arylamines, and the amination of tertiary arylamines and phenols. The key step of these coupling reactions is an iron‐catalyzed oxidative C−O or C−N bond formation which generally provides the corresponding products in high yields and with excellent regioselectivity. The transformations are accomplished using hexadecafluorophthalocyanine−iron(II) (FePcF16) as catalyst in the presence of an acid or a base additive and require only ambient air as sole oxidant.
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Affiliation(s)
- Alexander Purtsas
- Fakultät Chemie, Technische Universität Dresden, Bergstraße 66, 01069, Dresden, Germany
| | - Marco Rosenkranz
- Center of Spectroelectrochemistry, Leibniz Institute for Solid State and Materials Research (IFW) Dresden, Helmholtzstraße 20, 01069, Dresden, Germany
| | - Evgenia Dmitrieva
- Center of Spectroelectrochemistry, Leibniz Institute for Solid State and Materials Research (IFW) Dresden, Helmholtzstraße 20, 01069, Dresden, Germany
| | - Olga Kataeva
- A. E. Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Str. 8, Kazan, 420088, Russia
| | - Hans-Joachim Knölker
- Fakultät Chemie, Technische Universität Dresden, Bergstraße 66, 01069, Dresden, Germany
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21
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Wang HH, Wang XD, Yin GF, Zeng YF, Chen J, Wang Z. Recent Advances in Transition-Metal-Catalyzed C–H Alkylation with Three-Membered Rings. ACS Catal 2022. [DOI: 10.1021/acscatal.1c05266] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Hui-Hong Wang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, No. 222 South Tianshui Road, Lanzhou 730000, People’s Republic of China
| | - Xiao-Dong Wang
- School of Pharmacy, Lanzhou University, No. 199 West Donggang Road, Lanzhou 730000, People’s Republic of China
| | - Gao-Feng Yin
- School of Pharmacy, Lanzhou University, No. 199 West Donggang Road, Lanzhou 730000, People’s Republic of China
| | - Yao-Fu Zeng
- School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang 421001, People’s Republic of China
| | - Jinjin Chen
- School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang 421001, People’s Republic of China
| | - Zhen Wang
- School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang 421001, People’s Republic of China
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, No. 222 South Tianshui Road, Lanzhou 730000, People’s Republic of China
- School of Pharmacy, Lanzhou University, No. 199 West Donggang Road, Lanzhou 730000, People’s Republic of China
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22
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Maestro A, Lemaire S, Harutyunyan SR. Cu(I)-Catalyzed Alkynylation of Quinolones. Org Lett 2022; 24:1228-1231. [PMID: 35099185 PMCID: PMC8845045 DOI: 10.1021/acs.orglett.2c00020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
Herein we report
the first alkynylation of quinolones with terminal
alkynes under mild reaction conditions. The reaction is catalyzed
by Cu(I) salts in the presence of a Lewis acid, which is essential
for the reactivity of the system. The enantioselective version of
this transformation has also been explored, and the methodology has
been applied in the synthesis of the enantioenriched tetrahydroquinoline
alkaloid cuspareine.
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Affiliation(s)
- Aitor Maestro
- Stratingh Institute for Chemistry, University of Groningen, 9747 AG Groningen,The Netherlands
| | - Sebastien Lemaire
- Janssen Pharmaceutica, Chemical Process Research & Development, Turnhoutseweg 30, B-2340 Beerse, Belgium
| | - Syuzanna R. Harutyunyan
- Stratingh Institute for Chemistry, University of Groningen, 9747 AG Groningen,The Netherlands
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23
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Wan T, Wen Z, Laudadio G, Capaldo L, Lammers R, Rincón JA, García-Losada P, Mateos C, Frederick MO, Broersma R, Noël T. Accelerated and Scalable C(sp 3)-H Amination via Decatungstate Photocatalysis Using a Flow Photoreactor Equipped with High-Intensity LEDs. ACS CENTRAL SCIENCE 2022; 8:51-56. [PMID: 35106372 PMCID: PMC8796300 DOI: 10.1021/acscentsci.1c01109] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Indexed: 05/10/2023]
Abstract
Carbon-nitrogen bonds are ubiquitous in biologically active compounds, prompting synthetic chemists to design various methodologies for their preparation. Arguably, the ideal synthetic approach is to be able to directly convert omnipresent C-H bonds in organic molecules, enabling even late-stage functionalization of complex organic scaffolds. While this approach has been thoroughly investigated for C(sp2)-H bonds, only few examples have been reported for the direct amination of aliphatic C(sp3)-H bonds. Herein, we report the use of a newly developed flow photoreactor equipped with high intensity chip-on-board LED technology (144 W optical power) to trigger the regioselective and scalable C(sp3)-H amination via decatungstate photocatalysis. This high-intensity reactor platform enables simultaneously fast results gathering and scalability in a single device, thus bridging the gap between academic discovery (mmol scale) and industrial production (>2 kg/day productivity). The photocatalytic transformation is amenable to the conversion of both activated and nonactivated hydrocarbons, leading to protected hydrazine products by reaction with azodicarboxylates. We further validated the robustness of our manifold by designing telescoped flow approaches for the synthesis of pyrazoles, phthalazinones and free amines.
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Affiliation(s)
- Ting Wan
- Flow
Chemistry Group, Van ’t Hoff Institute for Molecular Sciences
(HIMS), University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Zhenghui Wen
- Flow
Chemistry Group, Van ’t Hoff Institute for Molecular Sciences
(HIMS), University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Gabriele Laudadio
- Flow
Chemistry Group, Van ’t Hoff Institute for Molecular Sciences
(HIMS), University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Luca Capaldo
- Flow
Chemistry Group, Van ’t Hoff Institute for Molecular Sciences
(HIMS), University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Rob Lammers
- Flow
Chemistry Group, Van ’t Hoff Institute for Molecular Sciences
(HIMS), University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Juan A. Rincón
- Centro
de Investigación Lilly S.A., Avda. de la Industria 30, Alcobendas-Madrid 28108, Spain
| | - Pablo García-Losada
- Centro
de Investigación Lilly S.A., Avda. de la Industria 30, Alcobendas-Madrid 28108, Spain
| | - Carlos Mateos
- Centro
de Investigación Lilly S.A., Avda. de la Industria 30, Alcobendas-Madrid 28108, Spain
| | - Michael O. Frederick
- Small Molecule
Design and Development, Eli Lilly and Company, Indianapolis, Indiana 46285, United States
| | - Rémy Broersma
- Signify
Research, High Tech Campus
7, 5656 AE Eindhoven, The Netherlands
| | - Timothy Noël
- Flow
Chemistry Group, Van ’t Hoff Institute for Molecular Sciences
(HIMS), University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
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24
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Yang X, Wu C, Su W, Yu J. Mechanochemical C−X/C−H Functionalization: An Alternative Strategy Access to Pharmaceuticals. European J Org Chem 2022. [DOI: 10.1002/ejoc.202101440] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xinjie Yang
- Zhejiang University of Technology Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Chaowang Road 18# 310014 Hangzhou CHINA
| | - Chongyang Wu
- Zhejiang University of Technology Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Chaowang Road 18# 310014 Hangzhou CHINA
| | - Weike Su
- Zhejiang University of Technology Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Chaowang Road 18# 310014 Hangzhou CHINA
| | - Jingbo Yu
- Zhejiang University of Technology Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Chaowang Road 18# 310014 Hangzhou CHINA
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25
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26
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Renzi P, Azzi E, Bessone E, Ghigo G, Parisotto S, Pellegrino F, Deagostino A. Blue light enhanced Heck arylation at room temperature applied to allenes. Org Chem Front 2022. [DOI: 10.1039/d1qo01631h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A blue light enhanced synthesis of 2-vinyl pirrolidines and piperidines through a domino Heck arylation–cyclisation applied to allenyl amines is described. Essential is the role of the light in the aryl migration in the carbo-palladation step.
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Affiliation(s)
- Polyssena Renzi
- Department of Chemistry, University of Torino, Via Pietro Giuria, 7, 10125 Torino, Italy
| | - Emanuele Azzi
- Department of Chemistry, University of Torino, Via Pietro Giuria, 7, 10125 Torino, Italy
| | - Enrico Bessone
- Department of Chemistry, University of Torino, Via Pietro Giuria, 7, 10125 Torino, Italy
| | - Giovanni Ghigo
- Department of Chemistry, University of Torino, Via Pietro Giuria, 7, 10125 Torino, Italy
| | - Stefano Parisotto
- Department of Chemistry, University of Torino, Via Pietro Giuria, 7, 10125 Torino, Italy
| | - Francesco Pellegrino
- Department of Chemistry, University of Torino, Via Pietro Giuria, 7, 10125 Torino, Italy
| | - Annamaria Deagostino
- Department of Chemistry, University of Torino, Via Pietro Giuria, 7, 10125 Torino, Italy
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27
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M. Honnanayakanavar J, Owk O, Suresh S. Recent Advances in the Tandem Copper-Catalyzed Ullmann-Goldberg N-Arylation–Cyclization Strategies. Org Biomol Chem 2022; 20:2993-3028. [DOI: 10.1039/d2ob00082b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
N‒Aryl bond formation under copper catalysis has been playing a pivotal role and has been extensively used as a key step in the total syntheses of several therapeutic molecules. The...
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28
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Xie X, Bao M, Chen KW, Xu X, Hu W. Asymmetric three-component reaction of diazo compound with alcohol and seven-membered imine. Org Chem Front 2022. [DOI: 10.1039/d2qo00076h] [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 dirhodium and chiral phosphoric acid co-catalyzed asymmetric three-component reaction of diazo compound with alcohol and seven-membered imine has been developed via Mannich-type interception of transient oxonium ylide. This reaction...
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29
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Astakhov AV, Chernenko AY, Kutyrev VV, Ranny GS, Minyaev ME, Chernyshev VM, Ananikov VP. Selective Buchwald–Hartwig arylation of C-amino-1,2,4-triazoles and other coordinating aminoheterocycles enabled by bulky NHC ligands and TPEDO activator. Inorg Chem Front 2022. [DOI: 10.1039/d2qi01832b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A facile method for selective N-(hetero)arylation of coordinating 3(5)-amino-1,2,4-triazoles under Pd/NHC catalysis using TPEDO as a new efficient Pd(ii) to Pd(0) reductant has been developed.
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Affiliation(s)
- Alexander V. Astakhov
- Platov South-Russian State Polytechnic University, (NPI), Prosvescheniya st., 132, Novocherkassk, 346428, Russia
| | - Andrey Yu. Chernenko
- Platov South-Russian State Polytechnic University, (NPI), Prosvescheniya st., 132, Novocherkassk, 346428, Russia
| | - Vadim V. Kutyrev
- Platov South-Russian State Polytechnic University, (NPI), Prosvescheniya st., 132, Novocherkassk, 346428, Russia
| | - Gleb S. Ranny
- Platov South-Russian State Polytechnic University, (NPI), Prosvescheniya st., 132, Novocherkassk, 346428, Russia
| | - Mikhail E. Minyaev
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
| | - Victor M. Chernyshev
- Platov South-Russian State Polytechnic University, (NPI), Prosvescheniya st., 132, Novocherkassk, 346428, Russia
| | - Valentine P. Ananikov
- Platov South-Russian State Polytechnic University, (NPI), Prosvescheniya st., 132, Novocherkassk, 346428, Russia
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
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30
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Adamantane-Functionalized Phthalimide Scaffold: Pathways to Supramolecular Interactions and Drug Discovery. ORGANICS 2021. [DOI: 10.3390/org2040022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Herein, the synthesis of a novel adamantanyl-functionalized phthalimide scaffold is demonstrated. The novel compound could be used as a precursor for various synthetic pathways owing to the generic use of adamantane substituents as the driving force for supramolecular interactions with macrocycles and N-substituted phthalimide derivatives as a core structure in numerous drugs. The adamantanyl-functionalized phthalimide scaffold contains bromide groups on the C4 and C5 positions of the benzene ring, effectively allowing further facile modifications of the scaffold. The structure was fully characterized including single-crystal X-ray crystallography. The crystal structure shows an adamantane moiety at an angle of 115.57(7)° to the phthalimide core, hence sterically freeing the adamantane unit for host–guest interactions.
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31
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Prasad S, Rodene DD, Burkholder MB, Donald KJ, Gupton BF. Substituent Effects and the Energetics of Noncatalyzed Aryl Halide Aminations: A Theoretical Investigation. ACS OMEGA 2021; 6:27216-27224. [PMID: 34693141 PMCID: PMC8529657 DOI: 10.1021/acsomega.1c03934] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Accepted: 09/24/2021] [Indexed: 06/13/2023]
Abstract
We report the influence of substituents and physical conditions on activation energies for the noncatalyzed amination (C-N cross-coupling reactions) of aryl halides. We uncover a significant correlation between the barrier heights of the C-N bond formation and Hammett σ parameters-a formal measure of the electron-withdrawing or -donating ability of substituents on the aryl halides. Our results indicate that such correlations are useful predictive tools for the amination of aryl halides over a wide range of substituent types. From 54 cases studied (six substituents occupying specific positions relative to halogen atoms), the 2-COOHPhI + NH2 n Pr amination reaction is predicted to possess the lowest noncatalyzed activation free energy (135.6 kJ mol-1) using the B3LYP method. The lower barriers for the 2-COOHPhX (for X = Cl, Br, and I) compounds are shown to originate from collusion between steric and electronic effects-specifically, the momentary formation of a hydrogen bond between an oxygen site on the ortho-COOH and the lone pair of the entering amine. Internal reaction coordinate (IRC) path calculations afforded us these and other key insights into the nature of the reactions. The control exerted by substituents on the arrangement of the transition state structure, as well as the sensitivity of the reaction barriers to temperature and solvent polarity, are discussed. These results offer new perspectives from which to assess the nature of the C-N bond formation and suggest new avenues for future exploration, especially in progress toward the metal-free amination of aryl compounds.
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Affiliation(s)
- Supreeth Prasad
- Department
of Chemistry, University of California—Davis, Davis, California 95616, United States
| | - Dylan D. Rodene
- Department
of Chemical and Life Science Engineering, Virginia Commonwealth University, Richmond, Virginia 23284, United States
| | - Michael B. Burkholder
- Department
of Chemical and Life Science Engineering, Virginia Commonwealth University, Richmond, Virginia 23284, United States
| | - Kelling J. Donald
- Department
of Chemistry, University of Richmond, Richmond, Virginia 23173, United States
| | - B. Frank Gupton
- Department
of Chemical and Life Science Engineering, Virginia Commonwealth University, Richmond, Virginia 23284, United States
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32
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Ledovskaya MS, Polynski MV, Ananikov VP. One-Pot and Two-Chamber Methodologies for Using Acetylene Surrogates in the Synthesis of Pyridazines and Their D-Labeled Derivatives. Chem Asian J 2021; 16:2286-2297. [PMID: 34152671 DOI: 10.1002/asia.202100562] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 06/18/2021] [Indexed: 01/03/2023]
Abstract
Acetylene surrogates are efficient tools in modern organic chemistry with largely unexplored potential in the construction of heterocyclic cores. Two novel synthetic paths to 3,6-disubstituted pyridazines were proposed using readily available acetylene surrogates through flexible C2 unit installation procedures in a common reaction space mode (one-pot) and distributed reaction space mode (two-chamber): (1) an interaction of 1,2,4,5-tetrazine and its acceptor-functionalized derivatives with a CaC2 -H2 O mixture performed in a two-chamber reactor led to the corresponding pyridazines in quantitative yields; (2) [4+2] cycloaddition of 1,2,4,5-tetrazines to benzyl vinyl ether can be considered a universal synthetic path to a wide range of pyridazines. Replacing water with D2 O and vinyl ether with its trideuterated analog in the developed procedures, a range of 4,5-dideuteropyridazines of 95-99% deuteration degree was synthesized for the first time. Quantum chemical modeling allowed to quantify the substituent effect in both synthetic pathways.
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Affiliation(s)
- Maria S Ledovskaya
- Institute of Chemistry, Saint Petersburg State University, Universitetsky prospect 26, Saint Petersburg, 198504, Russia
| | - Mikhail V Polynski
- Institute of Chemistry, Saint Petersburg State University, Universitetsky prospect 26, Saint Petersburg, 198504, Russia.,N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences, Leninsky prospect 47, Moscow, 119991, Russia
| | - Valentine P Ananikov
- Institute of Chemistry, Saint Petersburg State University, Universitetsky prospect 26, Saint Petersburg, 198504, Russia.,N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences, Leninsky prospect 47, Moscow, 119991, Russia
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