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Gamper M, Gstach H, Schantl JG. First Diels–Alder reaction of a N-nitrogen-substituted iminium ion as dienophile furnishing N-amino-substituted 1,2,5,6-tetrahydropyridines. MONATSHEFTE FUR CHEMIE 2023. [DOI: 10.1007/s00706-023-03054-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
Abstract
AbstractThe exploratory and preliminary work on the reaction of 1-(methoxydiphenylmethyl)-2-methyldiazene with 1,3-dienes reveals a remarkable dichotomy furnishing different heterocyclic Diels–Alder products depending on the presence or absence of water. In contrast to the acid-induced hydrolysis of the N,O-ketal starting material with 1,3-dienes furnishing 1-methyl-1,2,3,6-tetrahydropyridazines (preceding communication), the same acid-promoted reaction albeit under exclusion of water affords N-(methyleneamino)-1,2,5,6-tetrahydropyridines. The serendipitous discovery of the novel 1,2,5,6-tetrahydropyridines was corroborated by an alternative and independent synthesis providing the in situ generated formaldehyde benzophenone azine and its conjugate acid, 2-(diphenylmethylene)-1-methylenehydrazin-1-ium ion. The protonated azine serving as the putative dienophile resembles the first example of an N-nitrogen-substituted iminium ion employed as a dienophile in a bona fide normal electron-demand Diels–Alder reaction.
Graphical abstract
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2
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Linden M, Hofmann S, Herman A, Ehler N, Bär RM, Waldvogel SR. Electrochemical Synthesis of Pyrazolines and Pyrazoles via [3+2] Dipolar Cycloaddition. Angew Chem Int Ed Engl 2023; 62:e202214820. [PMID: 36478106 DOI: 10.1002/anie.202214820] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 12/06/2022] [Accepted: 12/06/2022] [Indexed: 12/12/2022]
Abstract
Pyrazolines and pyrazoles are common and important motifs of pharmaceutical agents and agrochemicals. Herein, the first electrochemical approach for their direct synthesis from easily accessible hydrazones and dipolarophiles up to decagram scale is presented. The application of a biphasic system (aqueous/organic) even allows for the conversion of highly sensitive alkenes, wherein inexpensive sodium iodide is employed in a dual role as supporting electrolyte and mediator. In addition, mechanistic insight into the reaction is given by the isolation of key step intermediates. The relevance of the presented reaction is underlined by the synthesis of commercial herbicide safener mefenpyr-diethyl in good yields.
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Affiliation(s)
- Martin Linden
- Department of Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Silja Hofmann
- Department of Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Antonia Herman
- Department of Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Nicole Ehler
- Department of Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Robin M Bär
- Research & Development, Crop Science, Bayer AG, Alfred-Nobel-Str. 50, 40789, Monheim am Rhein, Germany
| | - Siegfried R Waldvogel
- Department of Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
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3
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Filkina ME, Baray DN, Beloglazkina EK, Grishin YK, Roznyatovsky VA, Kukushkin ME. Regioselective Cycloaddition of Nitrile Imines to 5-Methylidene-3-phenyl-hydantoin: Synthesis and DFT Calculations. Int J Mol Sci 2023; 24:1289. [PMID: 36674803 PMCID: PMC9864863 DOI: 10.3390/ijms24021289] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 01/04/2023] [Accepted: 01/07/2023] [Indexed: 01/11/2023] Open
Abstract
Nitrile imine cycloaddition to hydantoins containing an exocyclic C=C double bond has been previously described in a very limited number of examples. In this work, regioselective synthesis of spiro-pyrazoline-imidazolidine-2,4-diones based on a 1,3-dipolar cycloaddition reaction of nitrile imines to 5-methylidene-3-phenyl-hydantoin have been proposed. It was found that, regardless of the nature of the aryl substituents at the terminal C and N atoms of the C-N-N fragment of nitrile imine (electron donor or electron acceptor), cycloaddition to the 5-methylidenhydantoin exocyclic C=C bond proceeds regioselectively, and the terminal nitrogen atom of the nitrile imine connects to the more sterically hindered carbon atom of the double bond, which leads to the formation of a 5-disubstituted pyrazoline ring. The observed cycloaddition regioselectivity was rationalized using DFT calculations of frontier molecular orbital interactions, global CDFT reactivity indices, and minimum energy paths.
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Affiliation(s)
| | | | - Elena K. Beloglazkina
- Department of Chemistry, M.V. Lomonosov Moscow State University, Leninskie Gory, 1-3, 119991 Moscow, Russia
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4
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Diaza-1,3-butadienes as Useful Intermediate in Heterocycles Synthesis. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27196708. [PMID: 36235245 PMCID: PMC9573662 DOI: 10.3390/molecules27196708] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 07/26/2022] [Accepted: 07/26/2022] [Indexed: 11/05/2022]
Abstract
Many heterocyclic compounds can be synthetized using diaza-1,3-butadienes (DADs) as key structural precursors. Isolated and in situ diaza-1,3-butadienes, produced from their respective precursors (typically imines and hydrazones) under a variety of conditions, can both react with a wide range of substrates in many kinds of reactions. Most of these reactions discussed here include nucleophilic additions, Michael-type reactions, cycloadditions, Diels–Alder, inverse electron demand Diels–Alder, and aza-Diels–Alder reactions. This review focuses on the reports during the last 10 years employing 1,2-diaza-, 1,3-diaza-, 2,3-diaza-, and 1,4-diaza-1,3-butadienes as intermediates to synthesize heterocycles such as indole, pyrazole, 1,2,3-triazole, imidazoline, pyrimidinone, pyrazoline, -lactam, and imidazolidine, among others. Fused heterocycles, such as quinazoline, isoquinoline, and dihydroquinoxaline derivatives, are also included in the review.
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5
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Łukasik B, Kowalska J, Frankowski S, Albrecht Ł. Vinylogous hydrazone strategy for the organocatalytic alkylation of heteroaromatic derivatives. Chem Commun (Camb) 2021; 57:6312-6315. [PMID: 34076661 DOI: 10.1039/d1cc01923f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A new umpolung approach for the asymmetric Friedel-Crafts-type alkylation of electron-poor heteroaromatic systems has been developed. It is based on the vinylogous reactivity of hydrazones derived from heteroaromatic aldehydes. The donating effect of the hydrazone moiety can be efficiently transferred over the heteroaromatic system activating it towards an asymmetric Friedel-Crafts reaction with α,β-unsaturated aldehydes realized under aminocatalytic conditions. Excellent enantioselectivities have been obtained owing to the application of a MacMillan imidazolidinone catalyst. Unmasking of the hydrazone moiety has also been realized resulting in the development of a unique strategy for the asymmetric functionalization of electron-poor heteroaromatic systems.
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Affiliation(s)
- Beata Łukasik
- Institute of Organic Chemistry, Faculty of Chemistry, Lodz University of Technology, Żeromskiego 116, Łódź 90-924, Poland.
| | - Justyna Kowalska
- Institute of Organic Chemistry, Faculty of Chemistry, Lodz University of Technology, Żeromskiego 116, Łódź 90-924, Poland.
| | - Sebastian Frankowski
- Institute of Organic Chemistry, Faculty of Chemistry, Lodz University of Technology, Żeromskiego 116, Łódź 90-924, Poland.
| | - Łukasz Albrecht
- Institute of Organic Chemistry, Faculty of Chemistry, Lodz University of Technology, Żeromskiego 116, Łódź 90-924, Poland.
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6
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Akulov AA, Varaksin MV, Charushin VN, Chupakhin ON. C(sp2) – H functionalization of aldimines and related compounds: advances and prospects. RUSSIAN CHEMICAL REVIEWS 2021. [DOI: 10.1070/rcr4978] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
This is the first systematic review of the most relevant approaches to direct C(sp2)–H bond functionalization of azomethine derivatives. The scope of the applicability of various transformations is analyzed. The review assesses prospects of the application of this functionalization strategy in the multistep synthesis of valuable compounds for use in medicinal chemistry, materials science and related areas.
The bibliography includes 124 references.
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7
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Azzi E, Ghigo G, Parisotto S, Pellegrino F, Priola E, Renzi P, Deagostino A. Visible Light Mediated Photocatalytic N-Radical Cascade Reactivity of γ,δ-Unsaturated N-Arylsulfonylhydrazones: A General Approach to Structurally Diverse Tetrahydropyridazines. J Org Chem 2021; 86:3300-3323. [DOI: 10.1021/acs.joc.0c02605] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Emanuele Azzi
- Department of Chemistry, University of Torino, Via Pietro Giuria, 7-10125 Torino, Italy
| | - Giovanni Ghigo
- Department of Chemistry, University of Torino, Via Pietro Giuria, 7-10125 Torino, Italy
| | - Stefano Parisotto
- Department of Chemistry, University of Torino, Via Pietro Giuria, 7-10125 Torino, Italy
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, 106 91 Stockholm, Sweden
| | - Francesco Pellegrino
- Department of Chemistry, University of Torino, Via Pietro Giuria, 7-10125 Torino, Italy
| | - Emanuele Priola
- Department of Chemistry, University of Torino, Via Pietro Giuria, 7-10125 Torino, Italy
| | - Polyssena Renzi
- Department of Chemistry, University of Torino, Via Pietro Giuria, 7-10125 Torino, Italy
| | - Annamaria Deagostino
- Department of Chemistry, University of Torino, Via Pietro Giuria, 7-10125 Torino, Italy
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8
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Popova AV, Kanaa A, Vavilova VS, Mironova MA, Slepukhin PA, Benassi E, Belskaya NP. Design, synthesis, and photophysics of bi- and tricyclic fused pyrazolines. NEW J CHEM 2021. [DOI: 10.1039/d0nj06287a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A three series of bi-cyclic and tri-cyclic functionalised pyrazoline fluorophores with high quantum yields and positive solvato(fluoro)chromism were designed and synthesised by improved method.
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Affiliation(s)
| | - Ali Kanaa
- Ural Federal University
- Yekaterinburg 620002
- Russian Federation
| | | | | | - Pavel A. Slepukhin
- Ural Federal University
- Yekaterinburg 620002
- Russian Federation
- Postovsky Institute of Organic Synthesis
- Ural Branch of Russian Academy of Science
| | | | - Nataliya P. Belskaya
- Ural Federal University
- Yekaterinburg 620002
- Russian Federation
- Postovsky Institute of Organic Synthesis
- Ural Branch of Russian Academy of Science
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9
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Matador E, Retamosa MDG, Rohal'ová D, Iglesias-Sigüenza J, Merino P, Fernández R, Lassaletta JM, Monge D. α-Keto hydrazones in asymmetric aminocatalysis: reactivity through β-amino aza-dienamine intermediates. Org Chem Front 2021. [DOI: 10.1039/d1qo00384d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
α-keto hydrazones activated by a bifunctional amino-thiourea catalyst generate β-amino aza-dienamine intermediates which react with nitroalkenes in highly enantioselective fashion.
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Affiliation(s)
- Esteban Matador
- Departamento de Química Orgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- 41012 Sevilla
- Spain
| | - María de Gracia Retamosa
- Departamento de Química Orgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- 41012 Sevilla
- Spain
| | - Dominika Rohal'ová
- Departamento de Química Orgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- 41012 Sevilla
- Spain
| | - Javier Iglesias-Sigüenza
- Departamento de Química Orgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- 41012 Sevilla
- Spain
| | - Pedro Merino
- Instituto de Biocomputación y Física de Sistemas Complejos (BIFI). Universidad de Zaragoza
- 50009 Zaragoza
- Spain
| | - Rosario Fernández
- Departamento de Química Orgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- 41012 Sevilla
- Spain
| | - José M. Lassaletta
- Instituto de Investigaciones Químicas (CSIC-US) and Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- 41092 Sevilla
- Spain
| | - David Monge
- Departamento de Química Orgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- 41012 Sevilla
- Spain
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10
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Worp BA, Kosobokov MD, Levin VV, Dilman AD. Photoredox Fluoroalkylation of Hydrazones in Neutral and Reductive Modes. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202001381] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Boris A. Worp
- N. D. Zelinsky Institute of Organic Chemistry 119991 Moscow Leninsky prosp. 47 Russian Federation
- Lomonosov Moscow State University Department of Chemistry 119991 Moscow Leninskie Gory 1–3 Russian Federation
| | - Mikhail D. Kosobokov
- N. D. Zelinsky Institute of Organic Chemistry 119991 Moscow Leninsky prosp. 47 Russian Federation
| | - Vitalij V. Levin
- N. D. Zelinsky Institute of Organic Chemistry 119991 Moscow Leninsky prosp. 47 Russian Federation
| | - Alexander D. Dilman
- N. D. Zelinsky Institute of Organic Chemistry 119991 Moscow Leninsky prosp. 47 Russian Federation
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11
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Lugovik KI, Kanaa A, Benassi E, Belskaya NP. Fluorescent Assembles of 2‐Amino‐3‐cyanothiophenes with Azoles. Design and Peculiar Properties of Absorption and Emission. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kseniya I. Lugovik
- Ural Federal University 19 Mira Str. Yekaterinburg 620002 Russian Federation
| | - Ali Kanaa
- Ural Federal University 19 Mira Str. Yekaterinburg 620002 Russian Federation
| | - Enrico Benassi
- Shihezi University 280 N 4th Rd Shihezi Xinjiang 832000 P. R. China
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12
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Eltyshev AK, Minin AS, Smoliuk LT, Benassi E, Belskaya NP. 2-Aryl-2,4-dihydro-5H-[1,2,3]triazolo[4,5-d]pyrimidin-5-ones as a New Platform for the Design and Synthesis of Biosensors and Chemosensors. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901582] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
| | - Artem S. Minin
- Ural Federal University; 19 Mira Str. 620002 Yekaterinburg Russia
- M. N. Mikheev Institute of Metal Physics; Ural Branch of Russian Academy of Science; 18 S. Kovalevskaya Str. 620108 Yekaterinburg Russia
| | - Leonid T. Smoliuk
- Institute of Immunology and Physiology; Ural Branch of Russian Academy of Science; 20 S. Kovalevskaya Str. 620049 Yekaterinburg Russia
| | - Enrico Benassi
- Lanzhou Institute of Chemical Physics; Chinese Academy of Science; 18 Tianshui Middle Rd 73000020 Lanzhou Shi Gansu Sheng P.R. China
- Department of Chemistry; Hexi University; 734000 Zhangye P. R. China
| | - Nataliya P. Belskaya
- Ural Federal University; 19 Mira Str. 620002 Yekaterinburg Russia
- I. Ya. Postovsky Institute of Organic Synthesis; Ural Branch of Russian Academy of Science; 20 S. Kovalevskaya Str. 620219 Yekaterinburg Russia
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13
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Yang Z, He J, Wei Y, Li W, Liu P. KI/TBHP-promoted [3 + 2] cycloaddition of pyrrolo[1,2-a]quinoxalines and N-arylsulfonylhydrazones. Org Biomol Chem 2020; 18:3360-3366. [DOI: 10.1039/d0ob00494d] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A series of diverse fused [1,2,4]triazolo[3,4-c]quinoxalines was obtained by an efficient KI/TBHP-promoted [3 + 2] cycloaddition of pyrrolo[1,2-a]quinoxalines and N-arylsulfonylhydrazones.
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Affiliation(s)
- Zhen Yang
- School of Chemistry and Chemical Engineering
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan
- Shihezi University
- Shihezi
- China
| | - Jing He
- School of Chemistry and Chemical Engineering
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan
- Shihezi University
- Shihezi
- China
| | - Yueting Wei
- School of Chemistry and Chemical Engineering
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan
- Shihezi University
- Shihezi
- China
| | - Weiwei Li
- School of Chemistry and Chemical Engineering
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan
- Shihezi University
- Shihezi
- China
| | - Ping Liu
- School of Chemistry and Chemical Engineering
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan
- Shihezi University
- Shihezi
- China
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14
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He J, Zhang J, Dai B, Liu P. Sequentially Formations of Csp
3
‐Csp
2
and Csp
2
‐Csp
2
Bonds by a One‐pot Reaction Involving
N
‐Tosylhydrazone and
p
‐Bromobenzeneboronic Acid. ChemistrySelect 2019. [DOI: 10.1002/slct.201900652] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Jing He
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xinjiang BingtuanShihezi University Shihezi 832003 P. R. China
| | - Jie Zhang
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xinjiang BingtuanShihezi University Shihezi 832003 P. R. China
| | - Bin Dai
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xinjiang BingtuanShihezi University Shihezi 832003 P. R. China
| | - Ping Liu
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xinjiang BingtuanShihezi University Shihezi 832003 P. R. China
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15
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Liu Y, Chen L, Wang Z, Liu P, Liu Y, Dai B. Cascade Reaction of Arylboronic Acids and 2′-Cyano-biaryl-2-aldehyde N-Tosylhydrazones: Access to Functionalized 9-Amino-10-arylphenanthrenes. J Org Chem 2018; 84:204-215. [DOI: 10.1021/acs.joc.8b02605] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yueqiang Liu
- School of Chemistry and Chemical Engineering, the Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi City, 832004, China
| | - Lingjuan Chen
- School of Chemistry and Chemical Engineering, the Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi City, 832004, China
| | - Zhong Wang
- School of Chemistry and Chemical Engineering, the Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi City, 832004, China
| | - Ping Liu
- School of Chemistry and Chemical Engineering, the Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi City, 832004, China
| | - Yan Liu
- School of Chemistry and Chemical Engineering, the Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi City, 832004, China
| | - Bin Dai
- School of Chemistry and Chemical Engineering, the Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi City, 832004, China
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16
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Lopes SMM, Cardoso AL, Lemos A, Pinho E Melo TMVD. Recent Advances in the Chemistry of Conjugated Nitrosoalkenes and Azoalkenes. Chem Rev 2018; 118:11324-11352. [PMID: 30495939 DOI: 10.1021/acs.chemrev.8b00375] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This review aims to present the most recent contributions in the chemistry of nitrosoalkenes and azoalkenes, highlighting the chemical behavior that makes them important and versatile building blocks in organic synthesis. These are heterodienes used in the assembly of a variety of heterocyclic systems, spanning from five- to seven-membered heterocycles, as well as for the functionalization of heterocycles.
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Affiliation(s)
- Susana M M Lopes
- CQC and Department of Chemistry , University of Coimbra , 3004-535 Coimbra , Portugal
| | - Ana L Cardoso
- CQC and Department of Chemistry , University of Coimbra , 3004-535 Coimbra , Portugal
| | - Américo Lemos
- Centro de Investigação em Química do Algarve, Faculdade de Ciências e Tecnologia , University of Algarve , Campus de Gambelas, 8005-139 Faro , Portugal
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17
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Berestovitskaya VM, Efremova IE, Serebryannikova AV, Lapshina LV, Gurzhiy VV. Synthesis of bicyclic systems containing fused sulfolane and isoxazolidine rings. Chem Heterocycl Compd (N Y) 2018. [DOI: 10.1007/s10593-018-2233-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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18
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Hamzik PJ, Goutierre AS, Sakai T, Danheiser RL. Aza Diels–Alder Reactions of Nitriles, N,N-Dimethylhydrazones, and Oximino Ethers. Application in Formal [2 + 2 + 2] Cycloadditions for the Synthesis of Pyridines. J Org Chem 2017; 82:12975-12991. [DOI: 10.1021/acs.joc.7b02503] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Philip J. Hamzik
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Anne-Sophie Goutierre
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Takeo Sakai
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Rick L. Danheiser
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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19
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Eliseeva AI, Nesterenko OO, Slepukhin PA, Benassi E, Belskaya NP. Synthesis and Fluorescent Behaviour of 2-Aryl-4,5-dihydro-1H-1,2,4-triazoles. J Org Chem 2017; 82:86-100. [PMID: 27977177 DOI: 10.1021/acs.joc.6b02144] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A series of new 4,5-dihydro-1H-1,2,4-triazoles was synthesized from amidrazones and acetylenedicarboxylic acid esters in the presence of pyridine in toluene. The synthesized compounds were characterized by 1H, 13C NMR, FT-IR spectral analyses and XRD data. Optical studies revealed that most of the compounds reported here exhibited emission of blue or green-yellow light upon irradiation in acetone and showed Stokes shifts in the region of 70-96 nm and quantum yields of up to 45%. The interpretation of the experimental findings was supported by state-of-the-art quantum mechanical calculations.
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Affiliation(s)
| | - Olga O Nesterenko
- Ural Federal University , 19 Mira Street, Yekaterinburg 620002, Russia
| | - Pavel A Slepukhin
- I. Ya. Postovsky Institute of Organic Synthesis , 22 S. Kovalevskaya Street, Yekaterinburg 620137, Russia
| | - Enrico Benassi
- Scuola Normale Superiore , Piazza dei Cavalieri 7, 56126 Pisa, Italy
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Ji H, Ni HQ, Zhi P, Xi ZW, Wang W, Shi JJ, Shen YM. Visible-light mediated directed perfluoroalkylation of hydrazones. Org Biomol Chem 2017; 15:6014-6023. [DOI: 10.1039/c7ob01144j] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A convenient and efficient protocol was reported to access a series of perfluoroalkylated aromatic aldehyde hydrazones. Aliphatic aldehyde hydrazones and N-monosubstituted hydrazones which are unreactive in previously reported hydrazone perfluoroalkylation reactions now take part in the reaction.
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Affiliation(s)
- Heng Ji
- School of Chemical Engineering
- Anhui University of Science and Technology
- Huainan
- P. R. China
- Key Laboratory of Clean Dyeing and Finishing Technology of Zhejiang Province
| | - Hui-qiong Ni
- School of Chemical Engineering
- Anhui University of Science and Technology
- Huainan
- P. R. China
| | - Peng Zhi
- Key Laboratory of Clean Dyeing and Finishing Technology of Zhejiang Province
- School of Chemistry and Chemical Engineering
- Shaoxing University
- Shaoxing 312000
- China
| | - Zi-wei Xi
- Key Laboratory of Clean Dyeing and Finishing Technology of Zhejiang Province
- School of Chemistry and Chemical Engineering
- Shaoxing University
- Shaoxing 312000
- China
| | - Wei Wang
- School of Chemical and Biological Engineering
- Yancheng Institute of Technology
- Yancheng
- P. R. China
| | - Jian-jun Shi
- School of Chemical Engineering
- Anhui University of Science and Technology
- Huainan
- P. R. China
| | - Yong-miao Shen
- Key Laboratory of Clean Dyeing and Finishing Technology of Zhejiang Province
- School of Chemistry and Chemical Engineering
- Shaoxing University
- Shaoxing 312000
- China
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21
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Synthesis and (3+2) cycloaddition reactions of N,N ʹ- and C,N-cyclic azomethine imines. Chem Heterocycl Compd (N Y) 2016. [DOI: 10.1007/s10593-016-1943-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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22
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Li Y, Barløse C, Jørgensen J, Carlsen BD, Jørgensen KA. Asymmetric Catalytic Aza-Diels-Alder/Ring-Closing Cascade Reaction Forming Bicyclic Azaheterocycles by Trienamine Catalysis. Chemistry 2016; 23:38-41. [DOI: 10.1002/chem.201604310] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Indexed: 12/26/2022]
Affiliation(s)
- Yang Li
- Department of Chemistry; Aarhus University; 8000 Aarhus C Denmark
| | - Casper Barløse
- Department of Chemistry; Aarhus University; 8000 Aarhus C Denmark
| | - Julie Jørgensen
- Department of Chemistry; Aarhus University; 8000 Aarhus C Denmark
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