1
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Mondal M, Mani G. Copper(I) complexes bearing pyrrole-bridged S,N and N-donor ligands as catalysts for tandem hydroamination-alkynylation: effect of anions on product formation. Dalton Trans 2024; 53:13996-14010. [PMID: 39102056 DOI: 10.1039/d4dt01937g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/06/2024]
Abstract
In this study, the reaction between 2-(3,5-dimethylpyrazolylmethyl)-5-(dimethylaminomethyl)pyrrole and thiophenol under heating conditions afforded the new ligand 2-(3,5-dimethylpyrazolylmethyl)-5-(phenylthiomethyl)pyrrole 2. The reaction of 2 with meta-chloroperbenzoic acid provided sulfoxide 3 and sulfone 4 group-containing ligands. The reaction of 2 with copper(I) halides provided the binuclear complexes [Cu(μ-X){μ-C4H3N-2-(CH2Me2pz)-5-(CH2SPh)-κ2-S,N}]2 (X = Cl, Br and I, 5-7) in high yields. Conversely, the analogous reaction of 4 with copper(I) halides yielded two types of complexes, three coordinate bi- and mononuclear of the type [Cu(μ-Cl){C4H3N-2-(CH2Me2pz)-5-(CH2SO2Ph)-κ1-N}]28 and [CuX{C4H3N-2-(CH2Me2pz)-5-(CH2SO2Ph)-κ1-N}2], X = Br, 9 and I, 10. When the reaction was carried out in the presence of KPF6, the two-coordinate complex [Cu{C4H3N-2-(CH2Me2pz)-5-(CH2SO2Ph)-κ1-N}2]PF6-11a was isolated, whereas its BF4- analogue 11b was synthesized by the reaction of 8 with AgBF4. The structures of these complexes were determined using single-crystal X-ray crystallography. These copper complexes catalyzed the hydroamination-alkynylation reaction between several secondary amines and alkyl and aryl terminal alkynes. Using 1 mol% of complexes 5-10 as catalysts, both tri- and tetra-substituted propargylamines were isolated. Alternatively, phenylacetylene and different secondary amines afforded the corresponding trisubstituted propargylamines as the major products and alkyl terminal alkynes gave the tetrasubstituted products in excellent yields. In addition, the role of counter anions such as TfO-, PF6-, BF4-, PO43- and Ph4B- on the product selectivity was studied. When fluorinated anions such as TfO-, PF6-, and BF4- were present with the copper complexes, the hydroamination-hydrovinylation product 1-aminodiene 23 was observed, which was not formed with PO43-, Ph4B- or halide ions. Specifically, TfO- and PF6- favored the formation of 23, while BF4- favored the tetrasubstituted product as the major product. This was further supported by the isolated copper(I) complexes containing PF6- and BF4- and by other specific reactions. The peaks for enamines and [LCu]+ species in the HRMS spectra of the reaction mixtures and the isolation of the morpholinium copper(I) salt support the proposed mechanism.
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Affiliation(s)
- Munmun Mondal
- Department of Chemistry, Indian Institute of Technology, Kharagpur, 721 302, Kharagpur, India.
| | - Ganesan Mani
- Department of Chemistry, Indian Institute of Technology, Kharagpur, 721 302, Kharagpur, India.
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2
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Altharawi A, Alqahtani SM, Aldakhil T, Sharma P, Kumar A, Ramadan MF. A novel green and efficient heterogeneous acid catalyst for the one-pot synthesis of benzopyrazine-aminoimidazole hybrids with antiproliferative potential. RSC Adv 2024; 14:26219-26232. [PMID: 39161442 PMCID: PMC11332591 DOI: 10.1039/d4ra04725g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2024] [Accepted: 08/12/2024] [Indexed: 08/21/2024] Open
Abstract
A novel, green, efficient, and stable magnetically heterogeneous nanocatalyst was developed by immobilizing butanesulfonic acid (BuSO3H) onto the surface of MFe2O4 magnetic nanoparticles (MNPs). The resulting core-shell structure of the MFe2O4@PDA@BuSO3H nanocatalyst was thoroughly characterized using various analytical techniques, including Fourier-Transform Infrared Spectroscopy (FT-IR), X-ray Diffraction (XRD), Energy-Dispersive X-ray Spectroscopy (EDS), Field Emission Scanning Electron Microscopy (FESEM), Transmission Electron Microscopy (TEM), Vibrating Sample Magnetometry (VSM), and Brunauer-Emmett-Teller (BET) analysis. A nanocatalyst was used to synthesize 2-benzopyrazine-aminoimidazole hybrid derivatives through a domino multicomponent Knoevenagel-condensation-cyclization reaction (5a-p) in an environmentally friendly manner. The resulting compounds were then tested for their anticancer activity against three types of human cancer cells (MCF-7, A549, and U87) using the MTT assay. The experiment showed that the nanocatalyst had excellent catalytic activity, and the synthesized compounds exhibited promising antiproliferative activity. Notably, compounds 5g and 5h, containing a 2-naphthyl ring, showed the highest antiproliferative effects against MCF-7 cells, with IC50 values of 0.03 and 0.32 μM, respectively. Additionally, the activity of compounds 5g and 5h in tubulin polymerization, apoptosis induction, and cell cycle arrest in MCF-7 cells were investigated. The results demonstrated that these compounds effectively induced apoptosis and cell cycle arrest. The binding of representative compounds to the colchicine binding site of tubulin was confirmed through molecular modeling studies.
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Affiliation(s)
- Ali Altharawi
- Department of Pharmaceutical Chemistry, College of Pharmacy, Prince Sattam Bin Abdulaziz University Al-Kharj 11942 Saudi Arabia
| | - Safar M Alqahtani
- Department of Pharmaceutical Chemistry, College of Pharmacy, Prince Sattam Bin Abdulaziz University Al-Kharj 11942 Saudi Arabia
| | - Taibah Aldakhil
- Department of Pharmaceutical Chemistry, College of Pharmacy, Prince Sattam Bin Abdulaziz University Al-Kharj 11942 Saudi Arabia
| | - Pawan Sharma
- Department of Chemistry, School of Sciences, Jain (Deemed-to-be) University Bengaluru Karnataka 560069 India
- Department of Sciences, Vivekananda Global University Jaipur Rajasthan 303012 India
| | - Abhishek Kumar
- School of Pharmacy-Adarsh Vijendra Institute of Pharmaceutical Sciences, Shobhit University Gangoh Uttar Pradesh 247341 India
- Department of Pharmacy, Arka Jain University Jamshedpur Jharkhand 831001 India
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3
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Volkova Y, Baranin S, Zavarzin I. A
3
Coupling Reaction in the Synthesis of Heterocyclic Compounds. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000866] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Yulia Volkova
- N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences 47 Leninsky prosp. Moscow 119991
| | - Sergey Baranin
- N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences 47 Leninsky prosp. Moscow 119991
| | - Igor Zavarzin
- N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences 47 Leninsky prosp. Moscow 119991
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4
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Neofotistos SP, Tzouras NV, Pauze M, Gómez‐Bengoa E, Vougioukalakis GC. Manganese‐Catalyzed Multicomponent Synthesis of Tetrasubstituted Propargylamines: System Development and Theoretical Study. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000566] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Stavros P. Neofotistos
- Department of Chemistry, Laboratory of Organic Chemistry National and Kapodistrian University of Athens Panepistimiopolis 15771 Athens Greece 7274230
| | - Nikolaos V. Tzouras
- Department of Chemistry, Laboratory of Organic Chemistry National and Kapodistrian University of Athens Panepistimiopolis 15771 Athens Greece 7274230
| | - Martin Pauze
- Department of Organic Chemistry I, Faculty of Chemistry University of the Basque Country UPV/EHU 20018 Donostia-San Sebastián Spain
| | - Enrique Gómez‐Bengoa
- Department of Organic Chemistry I, Faculty of Chemistry University of the Basque Country UPV/EHU 20018 Donostia-San Sebastián Spain
| | - Georgios C. Vougioukalakis
- Department of Chemistry, Laboratory of Organic Chemistry National and Kapodistrian University of Athens Panepistimiopolis 15771 Athens Greece 7274230
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5
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Rossi R, Angelici G, Casotti G, Manzini C, Lessi M. Catalytic Synthesis of 1,2,4,5‐Tetrasubstituted 1
H
‐Imidazole Derivatives: State of the Art. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201801381] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Renzo Rossi
- Dipartimento di Chimica e Chimica IndustrialeUniversity of Pisa via G. Moruzzi 13 56124 Pisa Italy
| | - Gaetano Angelici
- Dipartimento di Chimica e Chimica IndustrialeUniversity of Pisa via G. Moruzzi 13 56124 Pisa Italy
| | - Gianluca Casotti
- Dipartimento di Chimica e Chimica IndustrialeUniversity of Pisa via G. Moruzzi 13 56124 Pisa Italy
| | - Chiara Manzini
- Dipartimento di Chimica e Chimica IndustrialeUniversity of Pisa via G. Moruzzi 13 56124 Pisa Italy
| | - Marco Lessi
- Dipartimento di Chimica e Chimica IndustrialeUniversity of Pisa via G. Moruzzi 13 56124 Pisa Italy
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6
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Zhang Y, Feng H, Liu X, Huang L. A Highly Chemoselective Synthesis of Cyclic Divalent Propargylamines by Copper-Catalyzed Annulation/Double A3
-Couplings. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800393] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Yazhen Zhang
- College of Chemistry and Chemical Engineering; Shanghai University of Engineering Science; 333 Longteng Road 201620 Shanghai China
| | - Huangdi Feng
- College of Chemistry and Chemical Engineering; Shanghai University of Engineering Science; 333 Longteng Road 201620 Shanghai China
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Road 200032 Shanghai China
| | - Xiaohui Liu
- College of Chemistry and Chemical Engineering; Shanghai University of Engineering Science; 333 Longteng Road 201620 Shanghai China
| | - Liliang Huang
- College of Chemistry and Chemical Engineering; Shanghai University of Engineering Science; 333 Longteng Road 201620 Shanghai China
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7
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Salvant JM, Edwards AV, Kurek DZ, Looper RE. Regioselective Base-Mediated Cyclizations of Mono-N-acylpropargylguanidines. J Org Chem 2017; 82:6958-6967. [PMID: 28558466 PMCID: PMC6016371 DOI: 10.1021/acs.joc.7b00639] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A regioselective base-mediated cyclization of mono-N-acylpropargylguanidines is reported. A related Ag(I)-catalyzed hydroamination strategy was recently employed to yield N3-Cbz-protected ene-guanidines, which found utility in the synthesis of naamidine A. Herein, we report the base-catalyzed hydroamination of mono-N-acylpropargylguanidines, which proceeds with the opposite regiochemistry to deliver isomerized N2-acyl-2-aminoimidazoles with broad substrate scope, circumventing the problematic regiospecific acylation of free 2-aminoimidazoles.
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Affiliation(s)
- Justin M. Salvant
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
| | - Anne V. Edwards
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
| | - Daniel Z. Kurek
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
| | - Ryan E. Looper
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
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8
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Tian G, Fedoseev P, Van der Eycken EV. Hypervalent Iodine(III)-Mediated Cascade Cyclization of Propargylguanidines and Total Syntheses of Kealiinine B and C. Chemistry 2017; 23:5224-5227. [DOI: 10.1002/chem.201700934] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Indexed: 11/07/2022]
Affiliation(s)
- Guilong Tian
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC); University of Leuven (KU Leuven), Celestijnenlaan 200F; 3001 Leuven Belgium
| | - Pavel Fedoseev
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC); University of Leuven (KU Leuven), Celestijnenlaan 200F; 3001 Leuven Belgium
| | - Erik V. Van der Eycken
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC); University of Leuven (KU Leuven), Celestijnenlaan 200F; 3001 Leuven Belgium
- Peoples Friendship University of Russia (RUDN University); 6 Miklukho-Maklaya street Moscow 117198 Russia
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9
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Ghosh S, Biswas K, Bhattacharya S, Ghosh P, Basu B. Effect of the ortho-hydroxy group of salicylaldehyde in the A 3 coupling reaction: A metal-catalyst-free synthesis of propargylamine. Beilstein J Org Chem 2017; 13:552-557. [PMID: 28405234 PMCID: PMC5372705 DOI: 10.3762/bjoc.13.53] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Accepted: 02/27/2017] [Indexed: 11/23/2022] Open
Abstract
The synthesis of propargylamines via A3 coupling mostly under metal-catalyzed procedures is well known. This work invented an unprecedented effect of salicylaldehyde, one of the A3 coupling partners, which could lead to the formation of propargylamine, an important pharmaceutical building block, in the absence of any metal catalyst and under mild conditions. The role of the hydroxy group in ortho position of salicylaldehyde has been explored, which presumably activates the Csp-H bond of the terminal alkyne leading to the formation of propargylamines in good to excellent yields, thus negating the function of the metal catalyst. This observation is hitherto unknown, tested for a variety of salicylaldehyde, amine and acetylene, established as a general protocol, and is believed to be of interest for synthetic chemists from green chemistry.
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Affiliation(s)
- Sujit Ghosh
- Department of Chemistry, University of North Bengal, Darjeeling 734013, India
| | - Kinkar Biswas
- Department of Chemistry, University of North Bengal, Darjeeling 734013, India
| | | | - Pranab Ghosh
- Department of Chemistry, University of North Bengal, Darjeeling 734013, India
| | - Basudeb Basu
- Department of Chemistry, University of North Bengal, Darjeeling 734013, India
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10
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Synthesis of Thiazolidine-2-thiones through a One-Pot A3-Coupling-Carbon Disulfide Incorporation Process. European J Org Chem 2017. [DOI: 10.1002/ejoc.201601103] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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11
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Feng H, Zhao P, Huang L, Sun Z, Tong M. Highly Selective Synergistic Copper(I/II)-Catalyzed A3Cross Coupling/Decarboxylative A3Domino Reactions in Water. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201600524] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Huangdi Feng
- College of Chemistry and Chemical Engineering; Shanghai University of Engineering Science; 333 Longteng Road Shanghai 201620 China
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Panfeng Zhao
- College of Chemistry and Chemical Engineering; Shanghai University of Engineering Science; 333 Longteng Road Shanghai 201620 China
| | - Liliang Huang
- College of Chemistry and Chemical Engineering; Shanghai University of Engineering Science; 333 Longteng Road Shanghai 201620 China
| | - Zhihua Sun
- College of Chemistry and Chemical Engineering; Shanghai University of Engineering Science; 333 Longteng Road Shanghai 201620 China
| | - Minchao Tong
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
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12
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Iwata T, Otsuka S, Tsubokura K, Kurbangalieva A, Arai D, Fukase K, Nakao Y, Tanaka K. One-Pot Evolution of Ageladine A through a Bio-Inspired Cascade towards Selective Modulators of Neuronal Differentiation. Chemistry 2016; 22:14707-16. [PMID: 27557614 DOI: 10.1002/chem.201602651] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2016] [Indexed: 12/31/2022]
Abstract
A bio-inspired cascade reaction has been developed for the construction of the marine natural product ageladine A and a de novo array of its N1-substituted derivatives. This cascade features a 2-aminoimidazole formation that is modeled after an arginine post-translational modification and an aza-electrocyclization. It can be effectively carried out in a one-pot procedure from simple anilines or guanidines, leading to structural analogues of ageladine A that had been otherwise synthetically inaccessible. We found that some compounds out of this structurally novel library show a significant activity in modulating the neural differentiation. Namely, these compounds selectively activate or inhibit the differentiation of neural stem cells to neurons, while being negligible in the differentiation to astrocytes. This study represents a successful case in which the native biofunction of a natural product could be altered by structural modifications.
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Affiliation(s)
- Takayuki Iwata
- Biofunctional Synthetic Chemistry Laboratory, RIKEN, 2-1 Hirosawa, Wako-shi, Saitama, 351-0198, Japan
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka-shi, Osaka, 560-0043, Japan
| | - Satoshi Otsuka
- Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan
| | - Kazuki Tsubokura
- Biofunctional Synthetic Chemistry Laboratory, RIKEN, 2-1 Hirosawa, Wako-shi, Saitama, 351-0198, Japan
- Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan
| | - Almira Kurbangalieva
- Biofunctional Chemistry Laboratory, A. Butlerov Institute of Chemistry, Kazan Federal University, 18 Kremlyovskaya Street, Kazan, 420008, Russia
| | - Daisuke Arai
- Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan
- Research Institute for Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan
| | - Koichi Fukase
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka-shi, Osaka, 560-0043, Japan
| | - Yoichi Nakao
- Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan
- Research Institute for Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan
| | - Katsunori Tanaka
- Biofunctional Synthetic Chemistry Laboratory, RIKEN, 2-1 Hirosawa, Wako-shi, Saitama, 351-0198, Japan.
- Biofunctional Chemistry Laboratory, A. Butlerov Institute of Chemistry, Kazan Federal University, 18 Kremlyovskaya Street, Kazan, 420008, Russia.
- JST, PRESTO, 2-1 Hirosawa, Wako-shi, Saitama, 351-0198, Japan.
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13
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Switchable [3+2] and [4+2] Heteroannulation of Primary Propargylamines with Isonitriles to Imidazoles and 1,6-Dihydropyrimidines: Catalyst Loading Enabled Reaction Divergence. Chemistry 2016; 22:8332-8. [DOI: 10.1002/chem.201601560] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Indexed: 11/07/2022]
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14
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Schmidt NG, Simon RC, Kroutil W. Biocatalytic Asymmetric Synthesis of Optically Pure Aromatic Propargylic Amines Employing ω-Transaminases. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500086] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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15
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Trang TTT, Ermolat'ev DS, Van der Eycken EV. Facile and diverse microwave-assisted synthesis of secondary propargylamines in water using CuCl/CuCl2. RSC Adv 2015. [DOI: 10.1039/c4ra16005c] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A highly efficient microwave-assisted three-component reaction between an aldehyde, a primary amine and an alkyne was developed using an inexpensive Cu(i)/Cu(ii) catalytic system and water as solvent.
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Affiliation(s)
- Tran Thi Thu Trang
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC)
- Department of Chemistry
- University of Leuven (KU Leuven)
- B-3001 Leuven
- Belgium
| | - Denis S. Ermolat'ev
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC)
- Department of Chemistry
- University of Leuven (KU Leuven)
- B-3001 Leuven
- Belgium
| | - Erik V. Van der Eycken
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC)
- Department of Chemistry
- University of Leuven (KU Leuven)
- B-3001 Leuven
- Belgium
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16
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Tuning the Reactivity of Isocyano Group: Synthesis of Imidazoles and Imidazoliums from Propargylamines and Isonitriles in the Presence of Multiple Catalysts. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201410113] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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17
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Tong S, Wang Q, Wang MX, Zhu J. Tuning the Reactivity of Isocyano Group: Synthesis of Imidazoles and Imidazoliums from Propargylamines and Isonitriles in the Presence of Multiple Catalysts. Angew Chem Int Ed Engl 2014; 54:1293-7. [DOI: 10.1002/anie.201410113] [Citation(s) in RCA: 91] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Indexed: 01/25/2023]
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18
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Kwon KH, Serrano CM, Koch M, Barrows LR, Looper RE. Synthesis of bicyclic guanidines via cascade hydroamination/Michael additions of mono-N-acryloylpropargylguanidines. Org Lett 2014; 16:6048-51. [PMID: 25393831 PMCID: PMC4260634 DOI: 10.1021/ol502691w] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A cascade silver(I)-catalyzed hydroamination/Michael addition sequence has been developed to deliver highly substituted bicyclic guanidines. This transformation gives rise to geometrically and constitutionally stable ene-guanidines and generates a remote stereocenter with moderate to high diastereoselectivity.
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Affiliation(s)
- Ki-Hyeok Kwon
- †Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
| | - Catherine M Serrano
- †Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
| | - Michael Koch
- ‡Department of Pharmacy/Toxicology, University of Utah, 30 South 2000 East, Salt Lake City, Utah 84112 United States
| | - Louis R Barrows
- ‡Department of Pharmacy/Toxicology, University of Utah, 30 South 2000 East, Salt Lake City, Utah 84112 United States
| | - Ryan E Looper
- †Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
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19
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Pan M, Li S, Li X, Shao F, Liu L, Hu HG. Synthesis of and Specific Antibody Generation for Glycopeptides with ArginineN-GlcNAcylation. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201407824] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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20
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Pan M, Li S, Li X, Shao F, Liu L, Hu HG. Synthesis of and Specific Antibody Generation for Glycopeptides with ArginineN-GlcNAcylation. Angew Chem Int Ed Engl 2014; 53:14517-21. [DOI: 10.1002/anie.201407824] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Revised: 09/13/2014] [Indexed: 12/23/2022]
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21
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Zavesky B, Babij NR, Wolfe JP. Synthesis of substituted 2-aminoimidazoles via Pd-catalyzed alkyne carboamination reactions. Application to the synthesis of preclathridine natural products. Org Lett 2014; 16:4952-5. [PMID: 25198672 PMCID: PMC4168774 DOI: 10.1021/ol502471x] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Indexed: 01/18/2023]
Abstract
A new method for the synthesis of 2-aminoimidazole products is described. The heterocyclic products are generated in good yields via Pd-catalyzed carboamination reactions of N-propargyl guanidines and aryl triflates. This methodology generates both a C-N and C-C bond during the annulation step and facilitates the rapid construction of 2-aminoimidazole products with different aryl groups. The utility of this methodology was demonstrated in the total synthesis of preclathridine A, preclathridine B, and dorimidazole B from a single intermediate.
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Affiliation(s)
- Blane
P. Zavesky
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109-1005, United States
| | - Nicholas R. Babij
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109-1005, United States
| | - John P. Wolfe
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109-1005, United States
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22
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Sharma N, Sharma UK, Mishra NM, Van der Eycken EV. Copper-Catalyzed Diversity-Oriented Three- and Five- Component Synthesis of Mono- and Dipropargylic AminesviaCoupling of Alkynes, α-Amino Esters and Aldehydes. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201300888] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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23
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Park K, Heo Y, Lee S. Metal-Free Decarboxylative Three-Component Coupling Reaction for the Synthesis of Propargylamines. Org Lett 2013; 15:3322-5. [DOI: 10.1021/ol401358t] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Kyungho Park
- Department of Chemistry, Chonnam National University, Gwangju, 500-757, Republic of Korea
| | - Yumi Heo
- Department of Chemistry, Chonnam National University, Gwangju, 500-757, Republic of Korea
| | - Sunwoo Lee
- Department of Chemistry, Chonnam National University, Gwangju, 500-757, Republic of Korea
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24
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Pereshivko OP, Peshkov VA, Jacobs J, Meervelt LV, Van der Eycken EV. Cationic Gold- and Silver-Catalyzed Cycloisomerizations of Propargylic Ureas: A Selective Entry to Oxazolidin-2-imines and Imidazolidin-2-ones. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201200905] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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25
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Vachhani DD, Sharma A, Van der Eycken E. Copper-Catalyzed Direct Secondary and Tertiary CH Alkylation of Azoles through a Heteroarene-Amine-Aldehyde/Ketone Coupling Reaction. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201209312] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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26
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Vachhani DD, Sharma A, Van der Eycken E. Copper-Catalyzed Direct Secondary and Tertiary CH Alkylation of Azoles through a Heteroarene-Amine-Aldehyde/Ketone Coupling Reaction. Angew Chem Int Ed Engl 2013; 52:2547-50. [DOI: 10.1002/anie.201209312] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2012] [Indexed: 11/08/2022]
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27
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Vachhani DD, Mehta VP, Modha SG, Van Hecke K, VanMeervelt L, Van der Eycken EV. Microwave-Assisted Synthesis of Pyrazino[2,1-b]quinazolines and 3-Indolyl-2(1H)-pyrazinones Employing a Chemoselective Silver(I)- and Gold(I)-Catalyzed Reaction. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201100881] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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28
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Cheung LLW, He Z, Decker SM, Yudin AK. Skeletal Fusion of Small Heterocycles with Amphoteric Molecules. Angew Chem Int Ed Engl 2011; 50:11798-802. [PMID: 21990009 DOI: 10.1002/anie.201106024] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2011] [Indexed: 12/12/2022]
Affiliation(s)
- Lawrence L W Cheung
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George St., Toronto, ON, M5S 3H6, Canada
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29
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Cheung LLW, He Z, Decker SM, Yudin AK. Skeletal Fusion of Small Heterocycles with Amphoteric Molecules. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201106024] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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30
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Gainer MJ, Bennett NR, Takahashi Y, Looper RE. Regioselective rhodium(II)-catalyzed hydroaminations of propargylguanidines. Angew Chem Int Ed Engl 2010; 50:684-7. [PMID: 21226153 DOI: 10.1002/anie.201006087] [Citation(s) in RCA: 91] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2010] [Indexed: 11/11/2022]
Affiliation(s)
- Morgan J Gainer
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, UT 84112, USA
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31
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Gainer MJ, Bennett NR, Takahashi Y, Looper RE. Regioselective Rhodium(II)-Catalyzed Hydroaminations of Propargylguanidines. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201006087] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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