1
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Chen Y, Zhang C, Wang K, Li M, Tang H, Cheng W, Yin J, Yi W. Cu(I)-Catalyzed Three-Component Annulation for the Synthesis of 3-Acyl Imidazo[1, 5- a]Pyridines from 2-Pyridinyl-Substituted p-Quinone Methides, Terminal Alkynes, and TsN 3 Using O 2 as the Oxygen Source. J Org Chem 2024; 89:5423-5433. [PMID: 38557074 DOI: 10.1021/acs.joc.3c02876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Currently, most conventional methods to achieve imidazo[1,5-a]pyridines have limitations for the synthesis of 3-acyl imidazo[1,5-a]pyridines. Herein, a novel and efficient Cu(I)-catalyzed three-component annulation method for the synthesis of valuable 3-acyl imidazo[1,5-a]pyridines by the reaction of 2-pyridinyl-substituted p-QMs, terminal alkynes, and TsN3 in the presence of O2 under mild conditions have successfully been developed. The investigation indicated that molecular oxygen (O2) and TsN3, respectively, serving as oxygen and nitrogen sources, were essential for the successful completion of the reaction system.
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Affiliation(s)
- Yan Chen
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, P. R. China
| | - Chuanhao Zhang
- School of Pharmacy, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Kunpeng Wang
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, P. R. China
| | - Mengfan Li
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, P. R. China
| | - Hao Tang
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, P. R. China
| | - Wen Cheng
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, P. R. China
| | - Jun Yin
- Shanghai No.4 Reagent Chemical Co., Ltd., Shanghai 201512, P. R. China
| | - Weiyin Yi
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, P. R. China
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2
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Brunelli F, Russo C, Giustiniano M, Tron GC. Each Interruption is an Opportunity: Novel Synthetic Strategies Explored Through Interrupted Click Reactions. Chemistry 2024; 30:e202303844. [PMID: 38408267 DOI: 10.1002/chem.202303844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Indexed: 02/28/2024]
Abstract
The particular and unique mechanism of the copper-catalyzed reaction between azides and alkynes (CuAAC) has not only allowed for the efficient synthesis of 1,2,3-trisubstituted 1,4-triazoles in excellent yields and under mild conditions, becoming the quintessential click reaction, but it has also enabled the straightforward formation of a metallocycle intermediate, the copper triazolyl. This, under suitable reaction conditions able to suppress its protonolysis, can be used either for the creation of new bicyclic triazolyl structures or for the generation of novel three or four-component reactions. The aim of this review is to rationalize and unify all these transformations, which are collectively referred to as "interrupted click reactions".
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Affiliation(s)
- Francesca Brunelli
- Dipartimento di Scienze del Farmaco, Università del Piemonte Orientale, Largo Donegani 2, 28100, Novara, Italy
| | - Camilla Russo
- Dipartimento di Farmacia, Università degli Studi, Federico II, Via D. Montesano 49, 80131, Napoli, Italy
| | - Mariateresa Giustiniano
- Dipartimento di Farmacia, Università degli Studi, Federico II, Via D. Montesano 49, 80131, Napoli, Italy
| | - Gian Cesare Tron
- Dipartimento di Scienze del Farmaco, Università del Piemonte Orientale, Largo Donegani 2, 28100, Novara, Italy
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3
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Paioti PHS, Lounsbury KE, Romiti F, Formica M, Bauer V, Zandonella C, Hackey ME, Del Pozo J, Hoveyda AH. Click processes orthogonal to CuAAC and SuFEx forge selectively modifiable fluorescent linkers. Nat Chem 2024; 16:426-436. [PMID: 38093093 DOI: 10.1038/s41557-023-01386-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 10/25/2023] [Indexed: 03/07/2024]
Abstract
The appeal of catalytic click chemistry is largely due to the copper-catalysed azide-alkyne cycloaddition (CuAAC) process, which is orthogonal to the more recently introduced sulfur-fluoride exchange (SuFEx). However, the triazole rings generated by CuAAC are not readily modifiable, and SuFEx connectors cannot be selectively functionalized, attributes that would be attractive in a click process. Here we introduce bisphosphine-copper-catalysed phenoxydiazaborinine formation (CuPDF), a link-and-in situ modify strategy for merging a nitrile, an allene, a diborane and a hydrazine. We also present copper- and palladium-catalysed quinoline formation (Cu/PdQNF), which is applicable in aqueous media, involving an aniline as the modifier. CuPDF and Cu/PdQNF are easy to perform and deliver robust, alterable and tunable fluorescent hubs. CuPDF and Cu/PdQNF are orthogonal to SuFEx and CuAAC, despite the latter and CuPDF also being catalysed by an organocopper species. These advantages were applied to protecting group-free syntheses of sequence-defined branched oligomers, a chemoselectively amendable polymer, three drug conjugates and a two-drug conjugate.
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Affiliation(s)
- Paulo H S Paioti
- Supramolecular Science and Engineering Institute, University of Strasbourg, Strasbourg, France
| | - Katherine E Lounsbury
- Supramolecular Science and Engineering Institute, University of Strasbourg, Strasbourg, France
| | - Filippo Romiti
- Supramolecular Science and Engineering Institute, University of Strasbourg, Strasbourg, France
| | - Michele Formica
- Supramolecular Science and Engineering Institute, University of Strasbourg, Strasbourg, France
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA, USA
| | - Valentin Bauer
- Supramolecular Science and Engineering Institute, University of Strasbourg, Strasbourg, France
| | - Claudio Zandonella
- Supramolecular Science and Engineering Institute, University of Strasbourg, Strasbourg, France
| | - Meagan E Hackey
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA, USA
| | - Juan Del Pozo
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA, USA
| | - Amir H Hoveyda
- Supramolecular Science and Engineering Institute, University of Strasbourg, Strasbourg, France.
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA, USA.
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4
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Li G, Luo D, Luo Q, Huang Z, Zhuang W, Luo H, Yang W. Chemoselectivity of the CuAAC/Ring Cleavage/Cyclization Reaction between Enaminones and α-Acylketenimine. J Org Chem 2024; 89:2190-2199. [PMID: 38279922 DOI: 10.1021/acs.joc.3c02095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2024]
Abstract
Ketenimines represent an important class of reactive species, useful synthetic intermediates, and synthons. However, in general, ketenimines preferentially undergoes nucleophilic addition reactions with hydroxyl and amino groups, and carbon functional groups remain a less studied subset of such systems. Herein, we develop a straightforward syntheses of pyridin-4(1H)-imines that is achieved by cyclization of a reacting enaminone unit with α-acylketenimine which is generated from the reactions of sulfonyl azides and terminal ynones in situ (CuAAC/Ring cleavage reaction). The cascade process preferentially starts with the nucleophilic α-C of the enaminone unit instead of an amino group, attacking the electron-deficient central carbon of ketenimine, and the chemoselectivity unconventional products pyridin-4(1H)-imines were formed by intramolecular cyclization.
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Affiliation(s)
- Guanrong Li
- GuangDong Engineering Technology Research Center for the Development and Utilization of Mangrove Wetland Medicinal Resources, Guangdong Medical University, Zhanjiang, Guangdong 524023, China
| | - Danyang Luo
- GuangDong Engineering Technology Research Center for the Development and Utilization of Mangrove Wetland Medicinal Resources, Guangdong Medical University, Zhanjiang, Guangdong 524023, China
| | - Qiaoli Luo
- School of Chemistry and Chemical Engineering, Lingnan Normal University, Zhanjiang 524048, P. R. China
| | - Zixin Huang
- GuangDong Engineering Technology Research Center for the Development and Utilization of Mangrove Wetland Medicinal Resources, Guangdong Medical University, Zhanjiang, Guangdong 524023, China
| | - Weimin Zhuang
- GuangDong Engineering Technology Research Center for the Development and Utilization of Mangrove Wetland Medicinal Resources, Guangdong Medical University, Zhanjiang, Guangdong 524023, China
| | - Hui Luo
- GuangDong Engineering Technology Research Center for the Development and Utilization of Mangrove Wetland Medicinal Resources, Guangdong Medical University, Zhanjiang, Guangdong 524023, China
| | - Weiguang Yang
- GuangDong Engineering Technology Research Center for the Development and Utilization of Mangrove Wetland Medicinal Resources, Guangdong Medical University, Zhanjiang, Guangdong 524023, China
- The Marine Biomedical Research Institute of Guangdong, Zhanjiang, Guangdong 524023, China
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5
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Cui CC, Lin F, Wang LY, Liu YP, Tu SJ, Tu MS, Hao WJ, Jiang B. Olefin skeletal rearrangement enabling access to multiarylated N-sulfonyl amidines. Chem Commun (Camb) 2024; 60:1492-1495. [PMID: 38224160 DOI: 10.1039/d3cc05977d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2024]
Abstract
A base-promoted olefin skeletal rearrangement strategy from para-quinone methides (p-QMs) and N-fluoroarenesulfonamides is reported, enabling direct nitrogen insertion of olefins to produce a series of multiarylated (Z)-N-sulfonyl amidines with complete stereoselectivity and generally good yields. Using p-QMs without o-hydroxy substituents gave triarylated N-sulfonyl amidines, whereas tetraarylated N,N'-disulfonyl amidines were synthesized with the existence of o-hydroxy groups.
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Affiliation(s)
- Chen-Chang Cui
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, China.
| | - Feng Lin
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, China.
| | - Lu-Yao Wang
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, China.
| | - Yin-Ping Liu
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, China.
| | - Shu-Jiang Tu
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, China.
| | - Man-Su Tu
- Analyzing and Test Center, Jiangsu Normal University, Xuzhou, 221116, China.
| | - Wen-Juan Hao
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, China.
| | - Bo Jiang
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, China.
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6
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Zhang Z, Meng XJ, Cui FH, Tang HT, Wang YC, Huang GB, Pan YM. Electrochemically Promoted Three-Component Reaction to N-Sulfonyl Amidines. Org Lett 2024; 26:193-197. [PMID: 38147844 DOI: 10.1021/acs.orglett.3c03820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2023]
Abstract
In this study, a multicomponent reaction via the Mannich intermediate was developed using methanol, secondary amine, and sulfonamide as starting materials. This method uses methanol as a green C1 source. The substrate scope is wide, and the yield is good. The mechanistic study shows that methanol generates formaldehyde under electrochemical conditions, and sulfonyl amidine as a nucleophile reacts with Schiff base intermediates to form N-sulfonyl amidine in a single step.
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Affiliation(s)
- Zhang Zhang
- College of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, People's Republic of China
| | - Xiu-Jin Meng
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, People's Republic of China
| | - Fei-Hu Cui
- Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology, College of Chemistry and Food Science of Yulin Normal University, Yulin 537000, People's Republic of China
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, People's Republic of China
| | - Hai-Tao Tang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, People's Republic of China
| | - Ying-Chun Wang
- College of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, People's Republic of China
| | - Guo-Bao Huang
- Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology, College of Chemistry and Food Science of Yulin Normal University, Yulin 537000, People's Republic of China
| | - Ying-Ming Pan
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, People's Republic of China
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7
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Alsolami ES, Alorfi HS, Alamry KA, Hussein MA. One-pot multicomponent polymerization towards heterocyclic polymers: a mini review. RSC Adv 2024; 14:1757-1781. [PMID: 38192311 PMCID: PMC10772543 DOI: 10.1039/d3ra07278a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 12/11/2023] [Indexed: 01/10/2024] Open
Abstract
Multicomponent polymerization (MCP) is an innovative field related to polymer-based chemistry that offers numerous advantages derived from multicomponent reactions (MCRs). One of the key advantages of MCP is its ability to achieve high efficiency. Additionally, MCP offers other advantages, including operational simplicity, mild reaction conditions, and atom economy. MCP is a versatile technique that is used for synthesizing a wide range of analogs from several classes of heterocyclic compounds. The ring structures of heterocyclic polymers give them different mechanical, photophysical, and electrical properties to other types of polymers. Because of their unique properties, heterocyclic polymers have been widely utilized in various significant applications. MCRs are a type of chemical reaction that can be used to synthesize a wide variety of compounds in a single pot, which allows researchers to quickly assemble libraries of compounds. The development of MCPs from MCRs has made it easier to access a library of polymers with tunable structures. However, MCPs related to alkynes or acetylene triple bonds have more potential. In this review study, we provide an overview of the synthesis of heteroatom-functional polymers and alkyne-based development or other reactions such as Cu-catalyzed, catalyst-free, MCCP, MCTPs, green monomers, A3 coupling reactions, Passerini reactions, and sequence- and controlled-multicomponent polymerization. The up-to-date progress provides a convenient and efficient kind of approach related to heteroatoms and MCP synthesis, and perspectives in terms of future directions are also discussed in the study.
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Affiliation(s)
- Eman S Alsolami
- Chemistry Department, Faculty of Science, King Abdulaziz University P. O. Box 80203 Jeddah 21589 Saudi Arabia
| | - Hajar S Alorfi
- Chemistry Department, Faculty of Science, King Abdulaziz University P. O. Box 80203 Jeddah 21589 Saudi Arabia
| | - Khalid A Alamry
- Chemistry Department, Faculty of Science, King Abdulaziz University P. O. Box 80203 Jeddah 21589 Saudi Arabia
| | - Mahmoud A Hussein
- Chemistry Department, Faculty of Science, King Abdulaziz University P. O. Box 80203 Jeddah 21589 Saudi Arabia
- Chemistry Department, Faculty of Science, Assiut University Assiut 71516 Egypt
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8
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Escandón-Mancilla FM, González-Rivas N, Unnamatla MVB, García-Eleno MA, Corona-Becerril D, Frontana-Uribe BA, Cuevas-Yañez E. Beyond 1,2,3-triazoles: Formation and Applications of Ketemines Derived from Copper Catalyzed Azide Alkyne Cycloaddition. Curr Org Synth 2024; 21:359-379. [PMID: 36177624 DOI: 10.2174/1570179420666220929152449] [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: 05/17/2022] [Revised: 08/12/2022] [Accepted: 09/05/2022] [Indexed: 11/22/2022]
Abstract
Ketemines represent an interesting class of organic intermediates that has undergone a regrowth as a consequence of recent extensions of copper catalyzed azide alkyne cycloaddition (Cu- AAC) to other synthetic fields. This review summarizes the most recent generation methods of ketimines from CuAAC reaction, highlighting chemical properties focused on the synthesis of cyclic compounds, among others, affording a general outlook towards the development of new biologically active compounds.
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Affiliation(s)
- Flor M Escandón-Mancilla
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Carretera Toluca-Atlacomulco Km. 14.5, Toluca, Estado de México, 50200, Mexico
| | - Nelly González-Rivas
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Carretera Toluca-Atlacomulco Km. 14.5, Toluca, Estado de México, 50200, Mexico
- Facultad de Química, Universidad Autónoma del Estado de México. Paseo Colón esq. Paseo Tollocan, 50120, Toluca, Mexico
| | - Murali V Basavanag Unnamatla
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Carretera Toluca-Atlacomulco Km. 14.5, Toluca, Estado de México, 50200, Mexico
- Facultad de Química, Universidad Autónoma del Estado de México. Paseo Colón esq. Paseo Tollocan, 50120, Toluca, Mexico
| | - Marco A García-Eleno
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Carretera Toluca-Atlacomulco Km. 14.5, Toluca, Estado de México, 50200, Mexico
- Facultad de Química, Universidad Autónoma del Estado de México. Paseo Colón esq. Paseo Tollocan, 50120, Toluca, Mexico
| | - David Corona-Becerril
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Carretera Toluca-Atlacomulco Km. 14.5, Toluca, Estado de México, 50200, Mexico
- Facultad de Química, Universidad Autónoma del Estado de México. Paseo Colón esq. Paseo Tollocan, 50120, Toluca, Mexico
| | - Bernardo A Frontana-Uribe
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Carretera Toluca-Atlacomulco Km. 14.5, Toluca, Estado de México, 50200, Mexico
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, Ciudad de México, 04510, Mexico
| | - Erick Cuevas-Yañez
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Carretera Toluca-Atlacomulco Km. 14.5, Toluca, Estado de México, 50200, Mexico
- Facultad de Química, Universidad Autónoma del Estado de México. Paseo Colón esq. Paseo Tollocan, 50120, Toluca, Mexico
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9
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Yue TJ, Ren WM, Lu XB. Copolymerization Involving Sulfur-Containing Monomers. Chem Rev 2023; 123:14038-14083. [PMID: 37917384 DOI: 10.1021/acs.chemrev.3c00437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2023]
Abstract
Incorporating sulfur (S) atoms into polymer main chains endows these materials with many attractive features, including a high refractive index, mechanical properties, electrochemical properties, and adhesive ability to heavy metal ions. The copolymerization involving S-containing monomers constitutes a facile method for effectively constructing S-containing polymers with diverse structures, readily tunable sequences, and topological structures. In this review, we describe the recent advances in the synthesis of S-containing polymers via copolymerization or multicomponent polymerization techniques concerning a variety of S-containing monomers, such as dithiols, carbon disulfide, carbonyl sulfide, cyclic thioanhydrides, episulfides and elemental sulfur (S8). Particularly, significant focus is paid to precise control of the main-chain sequence, stereochemistry, and topological structure for achieving high-value applications.
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Affiliation(s)
- Tian-Jun Yue
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, China
| | - Wei-Min Ren
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, China
| | - Xiao-Bing Lu
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, China
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10
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Prabhu D, Ray U, Rajeev A, Joy R, George AT, George J, Raghavan SC, John F. Design and Synthesis of Ketenimine Sulfonamide Conjugates through Multicomponent Reactions; A Combined Cytotoxic Analysis and Computational Exploration. ACS OMEGA 2023; 8:38619-38631. [PMID: 37867708 PMCID: PMC10586297 DOI: 10.1021/acsomega.3c05816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 09/25/2023] [Indexed: 10/24/2023]
Abstract
Multicomponent reactions involving zwitterion generated from dimethyl acetylenedicarboxylate, aryl sulfonamide, and isocyanide to generate sulfonamide-conjugated ketenimines is reported. The synthetic strategy adopted is highly atom economical and stereoselective. Ketenimine sulfonamide analogues are key intermediates for further synthetic conversions to generate a combinatorial library of compounds. Furthermore, sulfonamide compounds are known to possess a broad spectrum of biological applications. All the novel molecules synthesized exhibit the potential to target the nonhomologous DNA end-joining (NHEJ) pathway with cytotoxic ability. Computational studies compliment the in vitro biological assays of the 8 small-molecule inhibitors. DNA double-strand breaks (DSBs) are considered as the most lethal among different DNA damages. NHEJ repairs about 70% of the DSBs generated in cells within mammals. The DNA-dependent protein kinase catalytic subunit is one of the PI3 kinases associated with NHEJ. Compounds DK01-DK08 were investigated for their ability to induce cancer cell death by treating with two leukemic cell lines where NHEJ is high. Results showed that bromoaryl (DK04)- and nitroaryl (DK05)-conjugated molecules showed excellent biological activity, having IC50 values of ∼2 μM in Nalm6 cell lines.
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Affiliation(s)
- Deepak
J. Prabhu
- Post
Graduate Research Department of Chemistry, Maharajas College, Ernakulam, Ernakulam, Kerala 682011, India
| | - Ujjayinee Ray
- Department
of Microbiology, Techno India University,
Kolkata, West Bengal 700091, India
| | - Anjaly Rajeev
- Post
Graduate and Research Department of Chemistry, Sacred Heart college (M.G University), Thevara, Kerala 682013, India
| | - Reshma Joy
- Post
Graduate and Research Department of Chemistry, Sacred Heart college (M.G University), Thevara, Kerala 682013, India
| | - Abi Thoppilan George
- Post
Graduate and Research Department of Chemistry, Sacred Heart college (M.G University), Thevara, Kerala 682013, India
| | - Jinu George
- Post
Graduate and Research Department of Chemistry, Sacred Heart college (M.G University), Thevara, Kerala 682013, India
| | - Sathees C. Raghavan
- Department
of Biochemistry, Indian Institute of Science, Bengaluru 560012, India
| | - Franklin John
- Post
Graduate and Research Department of Chemistry, Sacred Heart college (M.G University), Thevara, Kerala 682013, India
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11
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Aggarwal S, Richards WJ, Fokin VV. Generation and Aerobic Oxidation of Azavinyl Captodative Radicals. J Am Chem Soc 2023. [PMID: 37733969 DOI: 10.1021/jacs.3c06068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/23/2023]
Abstract
We describe a cascade reaction that selectively incorporates oxygen into the carbon-carbon backbone of alkynes using air as the source. The process starts by lithiating readily available, electron-deficient 1,2,3-triazoles, resulting in an amphoteric lithium ketenimine intermediate. This intermediate can react with both electrophiles and nucleophiles. Under the conditions outlined in this study, we generate azavinyl radicals, which are a rare subset of captodative radicals. When exposed to atmospheric oxygen, these radicals efficiently transform into α-oxygenated amidines─a class of compounds that has not been extensively studied. This process uniquely utilizes molecular oxygen without requiring metal or photocatalysts, and it occurs under mild conditions. Our mechanistic studies provide insights into the intricate sequence involved in the formation and selective capture of azavinyl captodative radicals.
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Affiliation(s)
- Shubhangi Aggarwal
- Department of Chemistry, The Bridge@USC and Loker Hydrocarbon Research Institute, University of Southern California, Los Angeles, 90089, California, United States
| | - William J Richards
- Department of Chemistry, The Bridge@USC and Loker Hydrocarbon Research Institute, University of Southern California, Los Angeles, 90089, California, United States
| | - Valery V Fokin
- Department of Chemistry, The Bridge@USC and Loker Hydrocarbon Research Institute, University of Southern California, Los Angeles, 90089, California, United States
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12
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Li Y, Feng J, Huang F, Baell JB. Synthesis of 3-Azabicyclo[3.1.0]hexane Derivates. Chemistry 2023; 29:e202301017. [PMID: 37269044 DOI: 10.1002/chem.202301017] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 05/28/2023] [Accepted: 06/02/2023] [Indexed: 06/04/2023]
Abstract
3-Azabicyclo[3.1.0]hexanes are an important class of nitrogen-containing heterocycles that have been found to be key structural features in a wide range of biologically active natural products, drugs, and agrochemicals. As a cutting-edge area, the synthesis of these derivatives has made spectacular progress in recent decades, with various transition-metal-catalyzed and transition-metal-free catalytic systems being developed. In this review, we provide an overview of recent advances in the efficient methods for the synthesis of 3-azabicyclo[3.1.0]hexane derivatives since 2010, emphasizing the scope of substrates and synthesis' applications, as well as the mechanisms of these reactions.
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Affiliation(s)
- Yufeng Li
- School of Pharmaceutical Sciences, Nanjing Tech University, No. 30 South Puzhu Road, Nanjing, Jiangsu, 211816, China
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, No.1 Wenyuan Road, Nanjing, Jiangsu, 210023, China
| | - Jiajun Feng
- School of Pharmaceutical Sciences, Nanjing Tech University, No. 30 South Puzhu Road, Nanjing, Jiangsu, 211816, China
| | - Fei Huang
- School of Pharmaceutical Sciences, Nanjing Tech University, No. 30 South Puzhu Road, Nanjing, Jiangsu, 211816, China
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, No.1 Wenyuan Road, Nanjing, Jiangsu, 210023, China
| | - Jonathan B Baell
- School of Pharmaceutical Sciences, Nanjing Tech University, No. 30 South Puzhu Road, Nanjing, Jiangsu, 211816, China
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13
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He Y, Yang Z, Luo D, Luo X, Chen X, Yang W. An Oxidant-Free and Mild Strategy for Quinazolin-4(3 H)-One Synthesis via CuAAC/Ring Cleavage Reaction. Molecules 2023; 28:5734. [PMID: 37570705 PMCID: PMC10420183 DOI: 10.3390/molecules28155734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 07/21/2023] [Accepted: 07/26/2023] [Indexed: 08/13/2023] Open
Abstract
An oxidant-free and highly efficient synthesis of phenolic quinazolin-4(3H)-ones was achieved by simply stirring a mixture of 2-aminobenzamides, sulfonyl azides, and terminal alkynes. The intermediate N-sulfonylketenimine underwent two nucleophilic additions and the sulfonyl group eliminated through the power of aromatization. The natural product 2-(4-hydroxybenzyl)quinazolin-4(3H)-one can be synthesized on a large scale under mild conditions with this method.
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Affiliation(s)
- Yueling He
- The Marine Biomedical Research Institute of Guangdong Zhanjiang, Guangdong Medical University, Zhanjiang 524023, China; (Y.H.); (Z.Y.); (D.L.)
- School of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
| | - Zhongtao Yang
- The Marine Biomedical Research Institute of Guangdong Zhanjiang, Guangdong Medical University, Zhanjiang 524023, China; (Y.H.); (Z.Y.); (D.L.)
| | - Danyang Luo
- The Marine Biomedical Research Institute of Guangdong Zhanjiang, Guangdong Medical University, Zhanjiang 524023, China; (Y.H.); (Z.Y.); (D.L.)
| | - Xiai Luo
- The Marine Biomedical Research Institute of Guangdong Zhanjiang, Guangdong Medical University, Zhanjiang 524023, China; (Y.H.); (Z.Y.); (D.L.)
- Hunan Province Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua 418000, China
| | - Xiaodong Chen
- Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang 524023, China
| | - Weiguang Yang
- The Marine Biomedical Research Institute of Guangdong Zhanjiang, Guangdong Medical University, Zhanjiang 524023, China; (Y.H.); (Z.Y.); (D.L.)
- Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang 524023, China
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14
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Yang W, Luo D, Li G, Hu W, Zheng J, Chen L. Mild and efficient synthesis of benzothiazolopyrimidine derivatives via CuAAC/ring cleavage/cyclization reaction. RSC Adv 2023; 13:22966-22972. [PMID: 37520094 PMCID: PMC10377972 DOI: 10.1039/d3ra04082h] [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: 06/17/2023] [Accepted: 07/24/2023] [Indexed: 08/01/2023] Open
Abstract
An operationally mild and efficient synthesis of benzothiazolopyrimidine is achieved by a three-component reaction of 2-aminebenzo[d]thiazoles, sulfonyl azides and terminal ynones. This cascade process involved a CuAAC/ring cleavage/cyclization reaction. Particularly, most of the benzothiazolopyrimidine derivatives could be isolated by filtration without further purification.
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Affiliation(s)
- Weiguang Yang
- Key Laboratory of Big Data Mining and Precision Drug Design of Guangdong Medical University, The Marine Biomedical Research Institute, Guangdong Medical University Zhanjiang 524023 China
- GuangDong Engineering Technology Research Center for the Development and Utilization of Mangrove Wetland Medicinal Resources, The Marine Biomedical Research Institute of Guangdong Zhanjiang Zhanjiang Guangdong 524023 China
| | - Danyang Luo
- Key Laboratory of Big Data Mining and Precision Drug Design of Guangdong Medical University, The Marine Biomedical Research Institute, Guangdong Medical University Zhanjiang 524023 China
| | - Guanrong Li
- Key Laboratory of Big Data Mining and Precision Drug Design of Guangdong Medical University, The Marine Biomedical Research Institute, Guangdong Medical University Zhanjiang 524023 China
| | - Weigao Hu
- Key Laboratory of Big Data Mining and Precision Drug Design of Guangdong Medical University, The Marine Biomedical Research Institute, Guangdong Medical University Zhanjiang 524023 China
| | - Jia Zheng
- Key Laboratory of Big Data Mining and Precision Drug Design of Guangdong Medical University, The Marine Biomedical Research Institute, Guangdong Medical University Zhanjiang 524023 China
| | - Lanmei Chen
- Key Laboratory of Big Data Mining and Precision Drug Design of Guangdong Medical University, The Marine Biomedical Research Institute, Guangdong Medical University Zhanjiang 524023 China
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15
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Wei Q, Zhang Y, Lv C, Hu C, Su Z. Theoretical Study on Cooperation Catalysis of Chiral Guanidine/ Copper(I) in Asymmetric Azide-Alkyne Cycloaddition/[2 + 2] Cascade Reaction. J Org Chem 2023. [PMID: 37437267 DOI: 10.1021/acs.joc.3c00758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/14/2023]
Abstract
Density functional theory (DFT) calculations with BP86-D3(BJ) functionals were employed to reveal the mechanism and stereoselectivity of chiral guanidine/copper(I) salt-catalyzed stereoselective three-component reaction among N-sulfonyl azide, terminal alkyne, and isatin-imine for spiroazetidinimines that was first reported by Feng and Liu (Angew. Chem. Int. Ed. 2018, 57, 16852-16856). For the noncatalytic cascade reaction, the denitrogenation to generate ketenimine species was the rate-determining step, with an activation barrier of 25.8-34.8 kcal mol-1. Chiral guanidine-amide promoted the deprotonation of phenylacetylene, generating guanidine-Cu(I) acetylide complexes as active species. In azide-alkyne cycloaddition, copper acetylene coordinated to the O atom of the amide moiety in guanidium, and TsN3 was activated by hydrogen bonding, affording the Cu(I)-ketenimine species with an energy barrier of 3.5∼9.4 kcal mol-1. The optically active spiroazetidinimine oxindole was constructed via a stepwise four-membered ring formation, followed by deprotonation of guanidium moieties for C-H bonding in a stereoselective way. The steric effect of the bulky CHPh2 group and chiral backbone in the guanidine, combined with the coordination between the Boc group in isatin-imine with a copper center, played important roles in controlling the stereoselectivity of the reaction. The major spiroazetidinimine oxindole product with an SS configuration was formed in a kinetically more favored way, which was consistent with the experimental observation.
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Affiliation(s)
- Qi Wei
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Yan Zhang
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Cidan Lv
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Changwei Hu
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Zhishan Su
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, P. R. China
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16
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Zhang H, Depew K, Chiasson JF, Leung CY, Crane SN, Rhodes M, Sui Z, Liu P. Efficient and metal Free synthesis of 2,3-disubstituted pyridopyrimidinones via ketenimine intermediates. Tetrahedron 2023. [DOI: 10.1016/j.tet.2023.133294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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17
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Saxena A, Ghosh N. Sequential Cu(II)-Catalyzed Multicomponent C-N Coupling, Nucleophilic Addition, and Cyclization Cascade: A Diastereoselective Approach to Carboxamide-Embedded Hexahydrobenzofuran Core. J Org Chem 2023; 88:300-309. [PMID: 36571574 DOI: 10.1021/acs.joc.2c02320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Cascade or domino reactions serve as a powerful technique for the synthesis of complex organic scaffolds in one pot. Herein, a Cu(II)-catalyzed and silica gel-assisted multicomponent reaction (MCR) between bromoalkyne-tethered cyclohexadienones, amides, and water for the construction of hexahydrobenzofuran-3-carboxamide is developed. The reaction proceeds via a C-N coupling reaction followed by hydrative cyclization of ynamide intermediates. Notably, good to excellent diastereoselectivity is complementary of this reaction.
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Affiliation(s)
- Anchal Saxena
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, Uttar Pradesh, India
| | - Nayan Ghosh
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, Uttar Pradesh, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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18
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Pasumpon K, Mahendran V, Shanmugam S. Microwave‐Assisted Tandem Copper‐Catalyzed Three‐Component Reaction for Synthesis of 2‐Iminopyrans. ChemistrySelect 2022. [DOI: 10.1002/slct.202203659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Kamaraj Pasumpon
- Department of Organic Chemistry School of Chemistry Madurai Kamaraj University Madurai 625 021
- Department of Chemistry Eurofins Advinus Biopharma Services India Pvt. Ltd Bangalore 560058
| | | | - Sivakumar Shanmugam
- Department of Organic Chemistry School of Chemistry Madurai Kamaraj University Madurai 625 021
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19
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Kadhim MM, Abdulkareem Mahmood E, Poor Heravi MR, Soleimani-Amiri S, Ebadi AG, Vessally E. The synthesis of biologically active 1-sulfonyl-1, 2, 3-triazoles from sulfonyl azides and alkynes: a focus review. J Sulphur Chem 2022. [DOI: 10.1080/17415993.2022.2149266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mustafa M. Kadhim
- Medical Laboratory Techniques Department, Al-Farahidi University, Iraq, Baghdad
- Medical Laboratory Techniques Department, Al-Turath University College, Iraq, Baghdad
| | - Evan Abdulkareem Mahmood
- College of Health Sciences, University of Human Development, Sulaimaniyah, Kurdistan Region of Iraq
| | | | | | - Abdol Ghaffar Ebadi
- Department of Agriculture, Jouybar Branch, Islamic Azad University, Jouybar, Iran
| | - Esmail Vessally
- Department of Chemistry, Payame Noor University, Tehran, Iran
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20
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Chou YC, Lin WH, Lin XY, Kuo CL, Zeng WQ, Lu IC, Liang CF. Hexamethyldisilazane-Mediated Amidination of Sulfonamides and Amines with Formamides. J Org Chem 2022; 87:15327-15332. [PMID: 36302512 DOI: 10.1021/acs.joc.2c01902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Hexamethyldisilazane was reacted with formamides to generate N,N-disubstituent formimidamide, after which a reaction with sulfonamides was induced to form sulfonylformamidines. This protocol can be applied for arylformamidine formation in which anilines are used as substrates under optimized conditions. The advantages of this method are high efficiency, structural diversity in products with good yields, and applicability in large-scale operations.
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Affiliation(s)
- Yu-Chen Chou
- Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan
| | - Wei-Han Lin
- Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan
| | - Xiu-Yi Lin
- Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan
| | - Chin-Ling Kuo
- Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan
| | - Wan-Qin Zeng
- Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan
| | - I-Chung Lu
- Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan
| | - Chien-Fu Liang
- Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan
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21
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Alassad Z, AboRaed A, Mizrachi MS, Pérez-Temprano MH, Milo A. Metal-Free Multicomponent Strategy for Amidine Synthesis. J Am Chem Soc 2022; 144:20672-20679. [DOI: 10.1021/jacs.2c07918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Zayed Alassad
- Department of Chemistry, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel
| | - Anas AboRaed
- Department of Chemistry, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel
| | - Meital Shema Mizrachi
- Department of Chemistry, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel
| | - Mónica H. Pérez-Temprano
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology (BIST), Tarragona 43007, Spain
| | - Anat Milo
- Department of Chemistry, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel
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22
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Philippova AN, Vorobyeva DV, Gribanov PS, Dolgushin FM, Osipov SN. Diastereoselective Synthesis of Highly Functionalized Proline Derivatives. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27206898. [PMID: 36296490 PMCID: PMC9609175 DOI: 10.3390/molecules27206898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 10/11/2022] [Accepted: 10/12/2022] [Indexed: 11/08/2022]
Abstract
An efficient way to access highly functionalized proline derivatives was developed based on a Cu(I)-catalyzed reaction between CF3-substituted allenynes and tosylazide, which involved a cascade of [3 + 2]-cycloaddition/ketenimine and a rearrangement/Alder-ene cyclization to afford the new proline framework with a high diastereoselectivity.
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Affiliation(s)
- Anna N. Philippova
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov str. 28/1, 119334 Moscow, Russia
| | - Daria V. Vorobyeva
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov str. 28/1, 119334 Moscow, Russia
| | - Pavel S. Gribanov
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov str. 28/1, 119334 Moscow, Russia
| | - Fedor M. Dolgushin
- N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninsky Prosp., 119071 Moscow, Russia
- Plekhanov Russian University of Economics, 36 Stremyanny per., 117997 Moscow, Russia
| | - Sergey N. Osipov
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov str. 28/1, 119334 Moscow, Russia
- Correspondence: ; Tel.: +7-499-135-1873
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23
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Luo X, Yang Z, Zheng J, Liang G, Luo H, Yang W. CuX Dual Catalysis: Construction of Oxazolo[2,3- b][1,3]oxazines via a Tandem CuAAC/Ring Cleavage/[4+2+3] Annulation Reaction. Org Lett 2022; 24:7300-7304. [PMID: 36178978 DOI: 10.1021/acs.orglett.2c02705] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
CuX as a simple dual catalyst strategy that promotes the tandem transformations of fused oxazolo[2,3-b][1,3]oxazines has been developed. Copper catalyzed terminal ynones, sulfonyl azides, and nitriles for the CuAAC/ring cleavage/[4+2] annulation reaction, while the halogen catalyzed ring cleavage and [2+3] annulation of oxiranes to form the final fused products. This study provides a four-component, one-pot strategy for synthesizing complex fused heterocycles from simple ingredients and expands the application of CuAAC in organic synthesis.
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Affiliation(s)
- Xiai Luo
- Public Service Platform of South China Sea for R&D Marine Biomedicine Resources, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang 524023, China.,School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua 418000, China
| | - Zhongtao Yang
- The Marine Biomedical Research Institute of Guangdong, Zhanjiang 524023, China
| | - Jia Zheng
- Public Service Platform of South China Sea for R&D Marine Biomedicine Resources, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang 524023, China
| | - Gang Liang
- School of Basic Medical Sciences, Guangxi Medical University, Nanning 530021, China
| | - Hui Luo
- Public Service Platform of South China Sea for R&D Marine Biomedicine Resources, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang 524023, China
| | - Weiguang Yang
- Public Service Platform of South China Sea for R&D Marine Biomedicine Resources, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang 524023, China
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24
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Li TP, Li RS, Hu W, Xie JX, Xu M, Feng C, Ni HL, Yu WH, Hu P, Wang BQ, Cao P. Modular Synthesis of Enantioenriched α-Chiral Homoallylic Amidines Enabled by Relay Ir/Cu Catalysis. Org Lett 2022; 24:6783-6788. [PMID: 36074995 DOI: 10.1021/acs.orglett.2c02655] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The cascade of Ir-catalyzed enantioselective allylic amination and Cu-catalyzed alkyne-azide cycloaddition was designed for the asymmetric synthesis of homoallylic amidines. The nucleophilic addition of an in situ-generated enantioenriched tertiary allylamine to a ketenimine intermediate triggers a rapid and stereospecific zwitterionic aza-Claisen rearrangement in a 1,3-chiral transfer manner. The approach allows modular access to enantioenriched α-chiral homoallylic amidines in high yields with a high level of enantiomeric purity.
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Affiliation(s)
- Ting-Peng Li
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichuan 610068, China
| | - Ren-Sha Li
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichuan 610068, China
| | - Wei Hu
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichuan 610068, China
| | - Jia-Xin Xie
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichuan 610068, China
| | - Minghui Xu
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichuan 610068, China
| | - Chun Feng
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichuan 610068, China
| | - Hai-Liang Ni
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichuan 610068, China
| | - Wen-Hao Yu
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichuan 610068, China.,College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan 610065, China
| | - Ping Hu
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichuan 610068, China
| | - Bi-Qin Wang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichuan 610068, China
| | - Peng Cao
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichuan 610068, China
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25
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Nishad CS, Haldar KK, Banerjee B. Metal-Free Direct Access to N-Sulfonyl Amidines from Sulfonamides and Secondary Amines Involving Tandem C-N Bond Formations. J Org Chem 2022; 87:11644-11655. [PMID: 35977049 DOI: 10.1021/acs.joc.2c01292] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report a mild and efficient metal-free one-pot procedure for the synthesis of N-sulfonyl amidines via the direct reaction of sulfonamides with secondary amines without using any additives. A wide range of substrates with variety of functional groups is well tolerated under the reaction conditions. Preliminary mechanistic studies indicate that the secondary amine plays a dual role as a C1 source of the amidine group and an aminating agent. Synthetic utility of this method is shown in the late-stage functionalization of drug molecules on the gram scale.
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Affiliation(s)
| | | | - Biplab Banerjee
- Department of Chemistry, Central University of Punjab, Bathinda 151401, India
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26
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Copper-catalyzed Z-selective synthesis of acrylamides and polyacrylamides via alkylidene ketenimines. Nat Commun 2022; 13:4362. [PMID: 35896596 PMCID: PMC9329291 DOI: 10.1038/s41467-022-32082-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Accepted: 07/14/2022] [Indexed: 12/03/2022] Open
Abstract
It remains very important to discover and study new fundamental intermediates consisting of carbon and nitrogen as the abundant elements of organic molecules. The unique alkylidene ketenimine could be formed in situ under mild conditions by an unexpected copper-catalyzed three-component reaction of alkyne, azide and water involving a successive cycloaddition, N2 extrusion and carbene-assisted rearrangement. Only Z-α,β-unsaturated amides instead of E-α,β-unsaturated amides or triazoles were acquired from alkylidene ketenimines with excellent selectivities and stereospecificities. In addition, a series of “approximate” alternating copolymers (poly (triazole-alt-Z-acrylamides)) with high Mns and yields were efficiently afforded by multicomponent polymerization through a very simple operation basing on this multicomponent reaction. Alkylidene ketenimines are rarely reported, but synthetically useful, reactive intermediates. Here, the authors disclose a three-component reaction of alkyne, azide and water by cycloaddition, nitrogen extrusion, and carbene-assisted rearrangement, via in situ formation of alkylidene ketenimine.
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27
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Pothikumar R, Sivaraj C, Giridharan K, Ravva MK, Namitharan K. Stereoselective Addition of Alkynes to Ketenimines: Copper/Amine Catalyzed Sulfonyl Azide-Alkyne Cycloaddition Reactions for the Synthesis of ( Z)-1,3-Enynes. Org Lett 2022; 24:4310-4315. [PMID: 35696547 DOI: 10.1021/acs.orglett.2c01180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Herein, we report a copper/amine catalyzed stereoselective addition of alkynes to ketenimine intermediates generated in situ from the sulfonyl azide-alkyne cycloaddition cascade for the stereoselective synthesis of (Z)-1,3-enynes. Significantly, for the first-time, enamine intermediates generated in the copper-catalyzed sulfonyl azide-alkyne cycloaddition reactions have been successfully trapped and isolated as the products. Density functional theory computations have also been performed and found to be consistent with the observed experimental stereoselectivity.
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Affiliation(s)
- Rajagopal Pothikumar
- Organic Synthesis and Catalysis Laboratory, Department of Chemistry, SRM Research Institute, SRM Institute of Science and Technology, Chennai 603 203, India
| | - Chandrasekaran Sivaraj
- Organic Synthesis and Catalysis Laboratory, Department of Chemistry, SRM Research Institute, SRM Institute of Science and Technology, Chennai 603 203, India
| | - Kayambu Giridharan
- Organic Synthesis and Catalysis Laboratory, Department of Chemistry, SRM Research Institute, SRM Institute of Science and Technology, Chennai 603 203, India
| | - Mahesh Kumar Ravva
- Department of Chemistry, SRM University-AP, Amaravati, Andhra Pradesh 522502, India
| | - Kayambu Namitharan
- Organic Synthesis and Catalysis Laboratory, Department of Chemistry, SRM Research Institute, SRM Institute of Science and Technology, Chennai 603 203, India.,Amity Institute of Click Chemistry Research and Studies, Amity University, Noida, Uttar Pradesh 201 301, India
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28
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Mahe C, D'Hollander ACA, Cariou K. Base‐Mediated Generation of Ketenimines from Ynamides: Addition of Hydrazones to Give Acetimidohydrazides**. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Capucine Mahe
- Institute of Chemistry for Life and Health Sciences Laboratory for Inorganic Chemical Biology 75005 Paris France
- Université Paris-Saclay, CNRS Institut de Chimie des Substances Naturelles, LabEx LERMIT, UPR 2301 91198 Gif-sur-Yvette France
| | - Agathe C. A. D'Hollander
- Université Paris-Saclay, CNRS Institut de Chimie des Substances Naturelles, LabEx LERMIT, UPR 2301 91198 Gif-sur-Yvette France
| | - Kevin Cariou
- Institute of Chemistry for Life and Health Sciences Laboratory for Inorganic Chemical Biology 75005 Paris France
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29
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Abstract
Carbon–carbon bond formation by [3,3]-sigmatropic rearrangement is a fundamental and powerful method that has been used to build organic molecules for a long time. Initially, Claisen and Cope rearrangements proceeded at high temperatures with limited scopes. By introducing catalytic systems, highly functionalized substrates have become accessible for forming complex structures under mild conditions, and asymmetric synthesis can be achieved by using chiral catalytic systems. This review describes recent breakthroughs in catalytic [3,3]-sigmatropic rearrangements since 2016. Detailed reaction mechanisms are discussed to enable an understanding of the reactivity and selectivity of the reactions. Finally, this review is inspires the development of new cascade reaction pathways employing catalytic [3,3]-sigmatropic rearrangement as related methodologies for the synthesis of complex functional molecules.
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30
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Li F, Wu Z, Wang J, Zhang S, Yu J, Yuan Z, Liu J, Shen R, Zhou Y, Liu L. Metal-free synthesis of N-sulfonylformamidines via skeletal reconstruction of sulfonyl oximonitriles. Org Chem Front 2022. [DOI: 10.1039/d1qo01665b] [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
We firstly develop an unprecedented domino reaction of sulfonyl oximonitriles with secondary amines to streamline synthesis of N-sulfonylformamidines in decent to high yields under mild reaction conditions.
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Affiliation(s)
- Feng Li
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu, Henan, 476000, P. R. China
| | - Ziyan Wu
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu, Henan, 476000, P. R. China
| | - Jingjing Wang
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu, Henan, 476000, P. R. China
| | - Siyuan Zhang
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu, Henan, 476000, P. R. China
| | - Jiaxin Yu
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu, Henan, 476000, P. R. China
| | - Zhen Yuan
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu, Henan, 476000, P. R. China
| | - Jingya Liu
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu, Henan, 476000, P. R. China
| | - Renzeng Shen
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu, Henan, 476000, P. R. China
| | - Yao Zhou
- Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, College of Chemistry and Chemical Engineering, Hubei Normal University, Huangshi, Hubei, 435002, P. R. China
| | - Lantao Liu
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu, Henan, 476000, P. R. China
- College of Chemistry, Zhengzhou University, Zhengzhou, Henan, 450052, P. R. China
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31
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Zhou Z, Luo D, Li G, Yang Z, Cui L, Yang W. Copper-catalyzed three-component reaction to synthesize polysubstituted imidazo[1,2- a]pyridines. RSC Adv 2022; 12:20199-20205. [PMID: 35919587 PMCID: PMC9280286 DOI: 10.1039/d2ra02722d] [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] [Received: 04/29/2022] [Accepted: 07/07/2022] [Indexed: 12/02/2022] Open
Abstract
An efficient three-component one-pot and operationally simple cascade of 2-aminopyridines with sulfonyl azides and terminal ynones is reported, providing a variety of polysubstituted imidazo[1,2-a]pyridine derivatives in moderate to excellent yields. In particular, the reaction goes a through CuAAC/ring-cleavage process and forms a highly active intermediate α-acyl-N-sulfonyl ketenimine with base free. Three-component one-pot synthesis of polysubstituted imidazo[1,2-a]pyridine derivatives through a base free CuAAC/ring-cleavage process.![]()
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Affiliation(s)
- Zitong Zhou
- Public Service Platform of South China Sea for R&D Marine Biomedicine Resources, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, 524023, China
| | - Danyang Luo
- Public Service Platform of South China Sea for R&D Marine Biomedicine Resources, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, 524023, China
| | - Guanrong Li
- Public Service Platform of South China Sea for R&D Marine Biomedicine Resources, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, 524023, China
| | - Zhongtao Yang
- Public Service Platform of South China Sea for R&D Marine Biomedicine Resources, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, 524023, China
| | - Liao Cui
- Public Service Platform of South China Sea for R&D Marine Biomedicine Resources, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, 524023, China
| | - Weiguang Yang
- Public Service Platform of South China Sea for R&D Marine Biomedicine Resources, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, 524023, China
- The Marine Biomedical Research Institute of Guangdong Zhanjiang, Zhanjiang, Guangdong, 524023, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang, Guangdong, 524023, China
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32
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Yang W, Zhao Y, Bu Q, Li L, Zhou B, Huang Z. Tandem CuAAC/Ring Cleavage/[4 + 2] Annulation Reaction to Synthesize Dihydrooxazines and Conversion to 2-Aminopyrimidines. Org Lett 2021; 24:457-461. [PMID: 34935394 DOI: 10.1021/acs.orglett.1c04179] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A tandem CuAAC/ring cleavage/[4 + 2] annulation reaction of terminal ynones, sulfonyl azides, and oximes has been developed to synthesize functionalized dihydrooxazines under mild conditions. In particular, intermediate N-sulfonyl acylketenimines are the first example of a 4π-system participating in [4 + 2] cycloadditions, and dihydrooxazines can convert to 2-aminopyridines through ring cleavage under basic conditions.
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Affiliation(s)
- Weiguang Yang
- Guangdong Key Laboratory for Research and the Development of Natural Drugs, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, Guangdong 524023, China.,The Marine Biomedical Research Institute of Guangdong, Zhanjiang, Guangdong 524023, China
| | - Yu Zhao
- Guangdong Key Laboratory for Research and the Development of Natural Drugs, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, Guangdong 524023, China
| | - Qingxia Bu
- Department of Chemistry, School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210009, China
| | - Li Li
- Guangdong Key Laboratory for Research and the Development of Natural Drugs, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, Guangdong 524023, China
| | - Baojing Zhou
- Department of Chemistry, School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210009, China
| | - Zunnan Huang
- Guangdong Key Laboratory for Research and the Development of Natural Drugs, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, Guangdong 524023, China
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33
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Kim H, Kim H, Kim K, Lee E. Construction of Stable Metal-Organic Framework Platforms Embedding N-Heterocyclic Carbene Metal Complexes for Selective Catalysis. Inorg Chem 2021; 60:18687-18697. [PMID: 34878260 DOI: 10.1021/acs.inorgchem.1c02070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report a bottom-up approach to immobilize catalysts into MOFs, including copper halides and gold chloride in a predictable manner. Interestingly, the structures of MOFs bearing NHC metal complexes maintained a similar 4-fold interpenetrated cube. They exhibited exceptionally high porosity despite the interpenetrated structure and showed good stability in various solvents. Moreover, these MOFs possess high size activity depending on the size of the substrates in various reactions, compared to homogeneous catalysis. Also, the high catalytic activity of MOFs can be preserved 4 times without significant loss of crystallinity. Incorporation of the various metal complexes into MOFs allows for the preparation of functional MOFs for practical applications.
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Affiliation(s)
- Hyunyong Kim
- Center for Self-assembly and Complexity, Institute for Basic Science (IBS), Pohang 790-784, Republic of Korea.,Department of Chemistry, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea
| | - Hyunseok Kim
- Department of Chemistry, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea
| | - Kimoon Kim
- Center for Self-assembly and Complexity, Institute for Basic Science (IBS), Pohang 790-784, Republic of Korea.,Department of Chemistry, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea.,Division of Advanced Materials Science, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea
| | - Eunsung Lee
- Center for Self-assembly and Complexity, Institute for Basic Science (IBS), Pohang 790-784, Republic of Korea.,Department of Chemistry, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea.,Division of Advanced Materials Science, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea
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34
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Thumpati P, Chakraborti G, Mandal T, Ravichandiran V, Dash J. Cycloaddition of N-sulfonyl and N-sulfamoyl azides with alkynes in aqueous media for the selective synthesis of 1,2,3-triazoles. GREEN CHEMISTRY : AN INTERNATIONAL JOURNAL AND GREEN CHEMISTRY RESOURCE : GC 2021; 24:911-915. [PMID: 37823060 PMCID: PMC7614909 DOI: 10.1039/d1gc03340a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
The cycloaddition of N-sulfonyl and N-sulfamoyl azides with terminal alkynes generally produces amide derivatives via ketenimine intermediates. We herein delineate a Cu(I) catalyzed method using a prolinamide ligand that selectively generate N-sulfonyl and sulfamoyltriazoles in aqueous media by inhibiting the cleavage of the N1-N2 bond of 5-cuprated triazole intermediates. The present method is mild and tolerant to air, moisture and a wide range of functional groups thereby providing an easy access to a variety of triazole products.
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Affiliation(s)
- Prasanth Thumpati
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032, India
- National Institute of Pharmaceutical Education and Research, Chunilal Bhawan, Maniktala, Kolkata-700054, India
| | - Gargi Chakraborti
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032, India
| | - Tirtha Mandal
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032, India
| | - Velayutham Ravichandiran
- National Institute of Pharmaceutical Education and Research, Chunilal Bhawan, Maniktala, Kolkata-700054, India
| | - Jyotirmayee Dash
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032, India
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35
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Roy S, Das SK, Khatua H, Das S, Chattopadhyay B. Road Map for the Construction of High-Valued N-Heterocycles via Denitrogenative Annulation. Acc Chem Res 2021; 54:4395-4409. [PMID: 34761918 DOI: 10.1021/acs.accounts.1c00563] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The pursuit for the discovery of new and powerful synthetic methods to access high-value N-heterocycles has been at the forefront of organic chemistry research for more than a century. Considering the importance of N-scaffolds in modern science, over the past few decades, great research efforts have been made to develop efficient synthetic methods for the construction of nitrogen-rich molecules. Among many efforts, transition metal catalyzed denitrogenative annulation reaction has emerged as a cornerstone due to its innate versatility and wider scope of application.The denitrogenative annulation approach offers clear advantages over many existing methods, as it enables effective, single-step interconversion of easily available feedstocks into a variety of other important N-containing heterocyclic frameworks. Recently, transition metal catalyzed denitrogenative annulation reaction of the 1,2,3-triazole via a metal carbene intermediate sparked significant interest in the application of various important heterocycle syntheses. Denitrogenative annulation reaction of 1,2,3-triazoles proceeds via an ionic mechanism. Recently, we demonstrated a new concept for the denitrogenative reaction of triazoles with alkenes and alkynes via in situ generated 2-(diazomethyl)pyridines. The method takes advantage of the inherent properties of a Co(III)-carbene radical intermediate and is the first report of the denitrogenative annulation/cyclopropanation by a radical-activation mechanism.On the other hand, in contrast to the denitrogenative annulation of 1,2,3-triazole, annulation reaction of 1,2,3,4-tetrazole (a surrogate of azide having an important pyridyl unit) via metal nitrene remains a big challenge. Previously, flash vacuum pyrolysis studies had been used for nitrene-nitrene rearrangement of 1,2,3,4-tetrazole at high temperature. This Account summarizes our recent efforts in developing transition metal catalyzed denitrogenative annulation of 1,2,3-triazoles via a radical mechanism and 1,2,3,4-tetrazoles via metal nitrene to access important nitrogen-rich molecules. We demonstrated that the 1,2,3,4-tetrazole under Ir-catalyzed reaction conditions can produce a productive Ir-nitrene intermediate that can successfully be employed for the construction of a wide number of α-carbolines and 7-azaindoles. Moreover, we developed an iron-based unique strategy for the intermolecular denitrogenative annulation reaction between tetrazoles and alkynes. The reaction overcomes the traditional click reaction and proceeds via an unprecedented metalloradical activation mechanism. Furthermore, we used our understanding of tetrazole reactivity to design an iron-catalyzed intramolecular denitrogenative C(sp3)-H amination reaction of primary, secondary, and tertiary centers by using a metalloradical activation concept. At the same time, we also developed a general catalytic method to enable two distinct reactions (1,3-cycloaddition and denitrogenative annulation) using Mn(TPP)Cl that afforded two different classes of nitrogen heterocycles. Mechanistic studies showed that although the click reaction likely proceeds through an ionic mechanism and the denitrogenative annulation reaction likely proceeds via an electrophilic metallonitrene intermediate rather than a metallonitrene radical intermediate. Finally, we report an iron-catalyzed rearrangement reaction (ring expansion/migration) that proceeded with an unprecedented level of selectivity, reactivity, and functional group tolerance offering rapid access to numerous complex N-heterocycles. We believe that our continuous efforts in this field would be beneficial for pharmaceutical industries, drug discovery, and other fields of medicinal chemistry.
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Affiliation(s)
- Satyajit Roy
- Division of Molecular Synthesis & Drug Discovery, Center of Biomedical Research, SGPGIMS Campus, Raebareli Road, Lucknow, 226014 Uttar Pradesh, India
| | - Sandip Kumar Das
- Division of Molecular Synthesis & Drug Discovery, Center of Biomedical Research, SGPGIMS Campus, Raebareli Road, Lucknow, 226014 Uttar Pradesh, India
| | - Hillol Khatua
- Division of Molecular Synthesis & Drug Discovery, Center of Biomedical Research, SGPGIMS Campus, Raebareli Road, Lucknow, 226014 Uttar Pradesh, India
| | - Subrata Das
- Division of Molecular Synthesis & Drug Discovery, Center of Biomedical Research, SGPGIMS Campus, Raebareli Road, Lucknow, 226014 Uttar Pradesh, India
| | - Buddhadeb Chattopadhyay
- Division of Molecular Synthesis & Drug Discovery, Center of Biomedical Research, SGPGIMS Campus, Raebareli Road, Lucknow, 226014 Uttar Pradesh, India
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36
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Shen J, Wu Z, Liu Y, Bai Y, Qiu J, Zhang Z, Yuan Z, Zhu G. Radical Chain Isomerization of N-Sulfonyl Ynamides to Ketenimines and Its Application to Furan Dearomatization. Org Lett 2021; 23:9321-9326. [PMID: 34806892 DOI: 10.1021/acs.orglett.1c03729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A radical chain isomerization of N-sulfonyl ynamides to isolable ketenimines is developed, featuring mild reaction conditions, a high efficiency, ∼100% atom economy, a broad substrate scope, and column chromatography-free workup in most cases. Meanwhile, an unprecedented dearomatization of furans is achieved by the radical chain isomerization-triggered aza-Claisen rearrangement, providing highly chemo-, regio-, stereo-, and diastereoselective access to functionalized quaternary nitriles.
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Affiliation(s)
- Jiahuan Shen
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P. R. China
| | - Zhenzhen Wu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P. R. China
| | - Yi Liu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P. R. China
| | - Yihui Bai
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P. R. China
| | - Jiayan Qiu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P. R. China
| | - Zuxiao Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P. R. China
| | - Zheliang Yuan
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P. R. China
| | - Gangguo Zhu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P. R. China
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37
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Lee IH, Bang KT, Yang HS, Choi TL. Recent Advances in Diversity-Oriented Polymerization Using Cu-Catalyzed Multicomponent Reactions. Macromol Rapid Commun 2021; 43:e2100642. [PMID: 34715722 DOI: 10.1002/marc.202100642] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 10/27/2021] [Indexed: 11/07/2022]
Abstract
Diversification of polymer structures is important for imparting various properties and functions to polymers, so as to realize novel applications of these polymers. In this regard, diversity-oriented polymerization (DOP) is a powerful synthetic strategy for producing diverse and complex polymer structures. Multicomponent polymerization (MCP) is a key method for realizing DOP owing to its combinatorial features and high efficiency. Among the MCP methods, Cu-catalyzed MCP (Cu-MCP) has recently paved the way for DOP by overcoming the synthetic challenges of the previous MCP methods. Here the emergence and progress of Cu-MCP, its current challenges, and future perspectives are discussed.
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Affiliation(s)
- In-Hwan Lee
- Department of Chemistry, Ajou University, Suwon, 16499, Korea
| | - Ki-Taek Bang
- Department of Chemistry, Seoul National University, Seoul, 08826, Korea
| | - Hee-Seong Yang
- Department of Energy System Research, Ajou University, Suwon, 16499, Korea
| | - Tae-Lim Choi
- Department of Chemistry, Seoul National University, Seoul, 08826, Korea
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38
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Zhou T, Zhu Y, Zhang H, He J, Li H, Lang M, Wang J, Peng S. One‐Pot Synthesis of 1,2,3‐Triazolo Polycyclic Systems via Copper‐Catalyzed/TsOH‐Promoted Tandem Annulation of 1,6‐Allenynes with Organic Azides. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100768] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Ting Zhou
- School of Biotechnology and Health Sciences Wuyi University Jiangmen 529020 People's Republic of China
| | - Yuqi Zhu
- School of Biotechnology and Health Sciences Wuyi University Jiangmen 529020 People's Republic of China
| | - Hong Zhang
- School of Biotechnology and Health Sciences Wuyi University Jiangmen 529020 People's Republic of China
| | - Jieyin He
- School of Biotechnology and Health Sciences Wuyi University Jiangmen 529020 People's Republic of China
| | - Hongguang Li
- School of Biotechnology and Health Sciences Wuyi University Jiangmen 529020 People's Republic of China
| | - Ming Lang
- School of Biotechnology and Health Sciences Wuyi University Jiangmen 529020 People's Republic of China
| | - Jian Wang
- School of Biotechnology and Health Sciences Wuyi University Jiangmen 529020 People's Republic of China
- School of Pharmaceutical Sciences Key Laboratory of Bioorganic Phosphorous Chemistry & Chemical Biology Ministry of Education Tsinghua University Beijing 100084 People's Republic of China
| | - Shiyong Peng
- School of Biotechnology and Health Sciences Wuyi University Jiangmen 529020 People's Republic of China
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39
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Luo X, Zhao Y, Tao S, Yang ZT, Luo H, Yang W. A simple and efficient copper-catalyzed three-component reaction to synthesize ( Z)-1,2-dihydro-2-iminoquinolines. RSC Adv 2021; 11:31152-31158. [PMID: 35496874 PMCID: PMC9041411 DOI: 10.1039/d1ra06330h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2021] [Accepted: 09/01/2021] [Indexed: 12/19/2022] Open
Abstract
A operationally simple synthesis of (Z)-1,2-dihydro-2-iminoquinolines that proceeds under mild conditions is achieved by copper-catalyzed reaction of 1-(2-aminophenyl)ethan-1-ones, sulfonyl azides and terminal ynones. In particular, the reaction goes through a base-free CuAAC/ring-opening process to obtain the Z-configured products due to hydrogen bonding.
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Affiliation(s)
- Xiai Luo
- Guangdong Key Laboratory for Research and Development of Natural Drugs, The Marine Biomedical Research Institute, Guangdong Medical University Zhanjiang 524023 China .,The Marine Biomedical Research Institute of Guangdong Zhanjiang Zhanjiang Guangdong 524023 China.,Department of Pharmacy, Hunan University of Medicine Huaihua 418000 China
| | - Yu Zhao
- Guangdong Key Laboratory for Research and Development of Natural Drugs, The Marine Biomedical Research Institute, Guangdong Medical University Zhanjiang 524023 China
| | - Susu Tao
- Guangdong Key Laboratory for Research and Development of Natural Drugs, The Marine Biomedical Research Institute, Guangdong Medical University Zhanjiang 524023 China
| | - Zhong-Tao Yang
- Guangdong Key Laboratory for Research and Development of Natural Drugs, The Marine Biomedical Research Institute, Guangdong Medical University Zhanjiang 524023 China .,The Marine Biomedical Research Institute of Guangdong Zhanjiang Zhanjiang Guangdong 524023 China
| | - Hui Luo
- Guangdong Key Laboratory for Research and Development of Natural Drugs, The Marine Biomedical Research Institute, Guangdong Medical University Zhanjiang 524023 China .,The Marine Biomedical Research Institute of Guangdong Zhanjiang Zhanjiang Guangdong 524023 China.,Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang) Zhanjiang Guangdong 524023 China
| | - Weiguang Yang
- Guangdong Key Laboratory for Research and Development of Natural Drugs, The Marine Biomedical Research Institute, Guangdong Medical University Zhanjiang 524023 China .,The Marine Biomedical Research Institute of Guangdong Zhanjiang Zhanjiang Guangdong 524023 China.,Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang) Zhanjiang Guangdong 524023 China
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40
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Pawar A, Gajare S, Jagdale A, Patil S, Chandane W, Rashinkar G, Patil S. Supported NHC-Benzimi@Cu Complex as a Magnetically Separable and Reusable Catalyst for the Multicomponent and Click Synthesis of 1,4-Disubstituted 1,2,3-Triazoles via Huisgen 1,3-Dipolar Cycloaddition. Catal Letters 2021. [DOI: 10.1007/s10562-021-03772-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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41
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Chakraborti G, Mandal T, Roy CP, Dash J. A [3+2] cycloaddition-1,2-acyl migration-hydrolysis cascade for regioselective synthesis of 1,2,3-triazoles in water. Chem Commun (Camb) 2021; 57:7970-7973. [PMID: 34286721 DOI: 10.1039/d1cc02801d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A cascade sequence involving [3+2] cycloaddition, 1,2-acyl migration and hydrolysis produces 2H-1,2,3-triazoles via the regioselective formation of N2-carboxyalkylated triazoles. The reaction proceeds in aqueous media through intriguing reaction kinetics using a CuI-prolinamide catalyst system. Prolinamide promotes the novel organocatalytic 1,2-acyl migration as well as hydrolysis of the resulting N2-carboxyalkylated triazoles.
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Affiliation(s)
- Gargi Chakraborti
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032, India.
| | - Tirtha Mandal
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032, India.
| | - Charles Patriot Roy
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032, India.
| | - Jyotirmayee Dash
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032, India.
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42
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Widyan K. An Improved Synthesis of Sulfonyl Azides in Ionic Liquids. ORG PREP PROCED INT 2021. [DOI: 10.1080/00304948.2021.1933333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Khalid Widyan
- Department of Chemistry, Tafila Technical University, Tafila, Jordan
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43
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Zhao Y, Zhou Z, Liu L, Chen M, Yang W, Chen Q, Gardiner MG, Banwell MG. The Copper-Catalyzed Reaction of 2-(1-Hydroxyprop-2-yn-1-yl)phenols with Sulfonyl Azides Leading to C3-Unsubstituted N-Sulfonyl-2-iminocoumarins. J Org Chem 2021; 86:9155-9162. [PMID: 34137260 DOI: 10.1021/acs.joc.1c00331] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An operationally simple synthesis of Z-configured and C3-unsubstituted N-sulfonyl-2-iminocoumarins (e.g., 8a) that proceeds under mild conditions is achieved by reacting 2-(1-hydroxyprop-2-yn-1-yl)phenols (e.g., 6a) with sulfonyl azides (e.g., 7a). The cascade process involved likely starts with a copper-catalyzed alkyne-azide cycloaddition (CuAAC) reaction. This is followed by ring-opening of the resulting metalated triazole (with accompanying loss of nitrogen), reaction of the ensuing ketenimine with the pendant phenolic hydroxyl group, and finally dehydration of the (Z)-N-(4-hydroxychroman-2-ylidene)sulfonamide so formed.
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Affiliation(s)
- Yu Zhao
- Guangdong Key Laboratory for Research and the Development of Natural Drugs, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, Guangdong 524023, China
| | - Zitong Zhou
- Guangdong Key Laboratory for Research and the Development of Natural Drugs, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, Guangdong 524023, China
| | - Lvling Liu
- The Marine Biomedical Research Institute of Guangdong, Zhanjiang, Guangdong 524023, China
| | - Man Chen
- Guangdong Key Laboratory for Research and the Development of Natural Drugs, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, Guangdong 524023, China
| | - Weiguang Yang
- Guangdong Key Laboratory for Research and the Development of Natural Drugs, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, Guangdong 524023, China.,The Marine Biomedical Research Institute of Guangdong, Zhanjiang, Guangdong 524023, China.,Southern Marine Science and Engineering Guangdong Laboratory, Zhanjiang, Guangdong 524023, China
| | - Qi Chen
- Institute for Advanced and Applied Chemical Synthesis, Jinan UniversityGuangzhou/Zhuhai, 510632/519070, China
| | - Michael G Gardiner
- Research School of Chemistry, Institute of Advanced Studies, The Australian National University, Canberra 2601, Australia
| | - Martin G Banwell
- Guangdong Key Laboratory for Research and the Development of Natural Drugs, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, Guangdong 524023, China.,Institute for Advanced and Applied Chemical Synthesis, Jinan UniversityGuangzhou/Zhuhai, 510632/519070, China.,Research School of Chemistry, Institute of Advanced Studies, The Australian National University, Canberra 2601, Australia
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44
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Bang KT, Kim H, Kang SY, Bhaumik A, Ahn S, Yun N, Choi TL. Constructing a Library of Doubly Grafted Polymers by a One-Shot Cu-Catalyzed Multicomponent Grafting Strategy. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00440] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ki-Taek Bang
- Department of Chemistry, Seoul National University, Gwanak-ro 1, Gwanak-gu, Seoul 151-747, Republic of Korea
| | - Hyunseok Kim
- Department of Chemistry, Seoul National University, Gwanak-ro 1, Gwanak-gu, Seoul 151-747, Republic of Korea
| | - Sung-Yun Kang
- Department of Chemistry, Seoul National University, Gwanak-ro 1, Gwanak-gu, Seoul 151-747, Republic of Korea
| | - Atanu Bhaumik
- Department of Chemistry, Seoul National University, Gwanak-ro 1, Gwanak-gu, Seoul 151-747, Republic of Korea
| | - Sojeong Ahn
- Department of Chemistry, Seoul National University, Gwanak-ro 1, Gwanak-gu, Seoul 151-747, Republic of Korea
| | - Namkyu Yun
- Department of Chemistry, Seoul National University, Gwanak-ro 1, Gwanak-gu, Seoul 151-747, Republic of Korea
| | - Tae-Lim Choi
- Department of Chemistry, Seoul National University, Gwanak-ro 1, Gwanak-gu, Seoul 151-747, Republic of Korea
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45
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Yang D, Shi J, Chen J, Jia X, Shi C, Ma L, Li Z. Visible-light enabled room-temperature dealkylative imidation of secondary and tertiary amines promoted by aerobic ruthenium catalysis. RSC Adv 2021; 11:18966-18973. [PMID: 35478631 PMCID: PMC9033495 DOI: 10.1039/d0ra10517a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 05/19/2021] [Indexed: 02/06/2023] Open
Abstract
Employing sulfonyl azide as a nitrogen donor, a visible-light-enabled aerobic dealkylative imidation of tertiary and secondary amines involving C(sp3)–C(sp3) bond cleavage with moderate to excellent yields at room temperature is described. It has been demonstrated that this imidation could take place spontaneously upon visible-light irradiation, and could be facilitated considerably by a ruthenium photocatalyst and oxygen. An alternative mechanism to the previous aerobic photoredox pathway has also been proposed. A photoredox dealkylative imidation of tertiary and secondary amines with sulfonyl azide facilitated by aerobic ruthenium-catalysis to afford sulfonyl amidine at room temperature is reported.![]()
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Affiliation(s)
- Dong Yang
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University Chengdu 610065 China
| | - Jingqi Shi
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University Chengdu 610065 China
| | - Jiaming Chen
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University Chengdu 610065 China
| | - Xiaoqi Jia
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University Chengdu 610065 China
| | - Cuiying Shi
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University Chengdu 610065 China
| | - Lifang Ma
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University Chengdu 610065 China
| | - Ziyuan Li
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University Chengdu 610065 China
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46
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Devarahosahalli Veeranna K, Kanti Das K, Baskaran S. Reversal of polarity by catalytic SET oxidation: synthesis of azabicyclo[ m. n.0]alkanes via chemoselective reduction of amidines. Org Biomol Chem 2021; 19:4054-4059. [PMID: 33885121 DOI: 10.1039/d1ob00416f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
A one-pot catalytic method has been developed for the stereoselective synthesis of cyclopropane-fused cyclic amidines using CuBr2/K2S2O8 as an efficient single electron transfer (SET) oxidative system. The generality of this mild method is demonstrated with a wide variety of substrates to furnish pharmaceutically important amidines containing aza-bicyclic and novel aza-tricyclic frameworks in very good yields. A chemoselective reduction of cyclic amidines to 2-/3-azabicyclo[m.n.0]alkanes and octahydroindoles has been developed using a NaBH4/I2 reagent system. The synthetic scope of the chemoselective reduction of the amidine functionality has been exemplified in the stereoselective synthesis of an iminosugar based (±)-epiquinamide analogue.
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Affiliation(s)
| | - Kanak Kanti Das
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600 036, India.
| | - Sundarababu Baskaran
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600 036, India.
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47
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Hayatgheybi S, Khosravi H, Zahedian Tejeneki H, Rominger F, Bijanzadeh HR, Balalaie S. Synthesis of N-(Isoquinolin-1-yl)sulfonamides via Ag 2O-Catalyzed Tandem Reaction of ortho-Alkynylbenzaldoximes with Benchtop Stabilized Ketenimines. Org Lett 2021; 23:3524-3529. [PMID: 33851841 DOI: 10.1021/acs.orglett.1c00937] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
In this project, a moderately efficient approach to multisubstituted N-(isoquinolin-1-yl)sulfonamide derivatives was illustrated, utilizing ortho-alkynylbenzaldoximes and zwitterionic ketenimine salts in a tandem reaction catalyzed by silver oxide. The oxophilicity of Ag2O, along with its nature as Lewis acid, pave the way for a smooth [3 + 2] cycloaddition between isoquinoline N-oxides and ketenimine species, which is a key step in this reaction. DFT calculation suggests that 1,3-dipolar cycloaddition of nitrone and ketenimine proceeds through a selective stepwise mechanism.
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Affiliation(s)
- Sepideh Hayatgheybi
- Peptide Chemistry Research Institute, K. N. Toosi University of Technology, P.O. Box 15875-4416, 19697-64499 Tehran, Iran
| | - Hormoz Khosravi
- Peptide Chemistry Research Institute, K. N. Toosi University of Technology, P.O. Box 15875-4416, 19697-64499 Tehran, Iran
| | - Hossein Zahedian Tejeneki
- Peptide Chemistry Research Institute, K. N. Toosi University of Technology, P.O. Box 15875-4416, 19697-64499 Tehran, Iran
| | - Frank Rominger
- Organisch-Chemisches Institut der Universitaet Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Hamid Reza Bijanzadeh
- Department of Environmental Sciences, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, 14117-13116 Tehran, Iran
| | - Saeed Balalaie
- Peptide Chemistry Research Institute, K. N. Toosi University of Technology, P.O. Box 15875-4416, 19697-64499 Tehran, Iran.,Medical Biology Research Center, Kermanshah University of Medical Sciences, 67158-47141 Kermanshah, Iran
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48
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Zhao Y, Li L, Zhou Z, Chen M, Yang W, Luo H. Copper catalyzed five-component domino strategy for the synthesis of nicotinimidamides. Org Biomol Chem 2021; 19:3868-3872. [PMID: 33949559 DOI: 10.1039/d1ob00162k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A library of medicinally and synthetically important nicotinimidamides was synthesized by a copper-catalyzed multicomponent domino reaction of oxime esters, terminal ynones, sulfonyl azides, aryl aldehydes and acetic ammonium. Its synthetic pathway involves the formation of a highly reactive N-sulfonyl acetylketenimine, characterized by high selectivity, combinations of potential nucleophiles and electrophiles, mild reaction conditions and a wide substrate scope, and is a rare five-component example of a CuAAC/ring-opening reaction.
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Affiliation(s)
- Yu Zhao
- Guangdong Key Laboratory for Research and Development of Natural Drugs, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, 524023, China.
| | - Li Li
- Guangdong Key Laboratory for Research and Development of Natural Drugs, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, 524023, China.
| | - Zitong Zhou
- Guangdong Key Laboratory for Research and Development of Natural Drugs, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, 524023, China.
| | - Man Chen
- Guangdong Key Laboratory for Research and Development of Natural Drugs, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, 524023, China.
| | - Weiguang Yang
- Guangdong Key Laboratory for Research and Development of Natural Drugs, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, 524023, China. and The Marine Biomedical Research Institute of Guangdong Zhanjiang, Zhanjiang, Guangdong 524023, China and Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang, Guangdong 524023, China
| | - Hui Luo
- Guangdong Key Laboratory for Research and Development of Natural Drugs, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, 524023, China. and The Marine Biomedical Research Institute of Guangdong Zhanjiang, Zhanjiang, Guangdong 524023, China and Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang, Guangdong 524023, China
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49
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Shaik B, Seelam M, Tamminana R, Kammela PR. Iodine-Mediated Multi-Component Reactions: Readily Access to Tetrazoles and Guanidines. LETT ORG CHEM 2021. [DOI: 10.2174/1570178617999200728212116] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Environmentally benign syntheses of One-pot sequential reactions of benzoyl chloride with
amines followed by the treatment of molecular I2 reagent under basic conditions provide benzoyl
tetrazoles and guanidines in moderate to excellent yields. This one-pot synthesis has several
advantages such as mild reaction conditions, short reaction time, convenient workup, high yields, using
cheap and readily available reagent molecular Iodine. In addition, functional group tolerance has been
explored.
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Affiliation(s)
- Bajivali Shaik
- Department of Chemistry, Gudlavalleru Engineering College (Autonomous), Gudlavalleru-521 356, India
| | - Mohan Seelam
- Department of Chemistry, Bapatla Engineering College (Autonomous), Bapatla-522 10, India
| | - Ramana Tamminana
- Department of Chemistry, GITAM University, Bengaluru Campus, NH-207, Doddaballapur Taluk, Bengaluru Rural District, Karnataka-561203, India
| | - Prasad Rao Kammela
- Department of Chemistry, Bapatla Engineering College (Autonomous), Bapatla-522 10, India
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50
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Bahadorikhalili S, Divar M, Damghani T, Moeini F, Ghassamipour S, Iraji A, Miller MA, Larijani B, Mahdavi M. N-sulfonyl ketenimine as a versatile intermediate for the synthesis of heteroatom containing compounds. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.121773] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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