1
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Jézéquel YA, Svěrák F, Ramundo A, Orel V, Martínek M, Klán P. Structure-Photoreactivity Relationship Study of Substituted 3-Hydroxyflavones and 3-Hydroxyflavothiones for Improving Carbon Monoxide Photorelease. J Org Chem 2024; 89:4888-4903. [PMID: 38517741 PMCID: PMC11002828 DOI: 10.1021/acs.joc.4c00070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 03/03/2024] [Accepted: 03/07/2024] [Indexed: 03/24/2024]
Abstract
Carbon monoxide (CO) is notorious for its toxic effects but is also recognized as a gasotransmitter with considerable therapeutic potential. Due to the inherent challenges in its delivery, the utilization of organic CO photoreleasing molecules (photoCORMs) represents an interesting alternative to CO administration characterized by high spatial and temporal precision of release. This paper focused on the design, synthesis, and photophysical and photochemical studies of 20 3-hydroxyflavone (flavonol) and 3-hydroxyflavothione derivatives as photoCORMs. Newly synthesized compounds bearing various electron-donating and electron-withdrawing groups show bathochromically shifted absorption maxima and considerably enhanced CO release yields compared to the parent unsubstituted flavonol, exceeding 0.8 equiv of released CO in derivatives exhibiting excited states with a charge-transfer character. Until now, such outcomes have been limited to flavonol derivatives possessing a π-extended aromatic system. In addition, thione analogs of flavonols, 3-hydroxyflavothiones, show substantial bathochromic shifts of their absorption maxima and enhanced photosensitivity but provide lower yields of CO formation. Our study elucidates in detail the mechanism of CO photorelease from flavonols and flavothiones, utilizing steady-state and time-resolved spectroscopies and photoproduct analyses, with a particular emphasis on unraveling the structure-photoreactivity relationship and understanding competing side processes.
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Affiliation(s)
- Yann A. Jézéquel
- Department
of Chemistry, Faculty of Science, Masaryk
University, Kamenice 5, 625 00 Brno, Czech Republic
- RECETOX,
Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech
Republic
| | - Filip Svěrák
- Department
of Chemistry, Faculty of Science, Masaryk
University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Andrea Ramundo
- Department
of Chemistry, Faculty of Science, Masaryk
University, Kamenice 5, 625 00 Brno, Czech Republic
- RECETOX,
Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech
Republic
| | - Vojtěch Orel
- Department
of Chemistry, Faculty of Science, Masaryk
University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Marek Martínek
- Department
of Chemistry, Faculty of Science, Masaryk
University, Kamenice 5, 625 00 Brno, Czech Republic
- RECETOX,
Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech
Republic
| | - Petr Klán
- Department
of Chemistry, Faculty of Science, Masaryk
University, Kamenice 5, 625 00 Brno, Czech Republic
- RECETOX,
Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech
Republic
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2
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Mañas C, Merino E. Visible Light-Mediated Heterodifunctionalization of Alkynylazobenzenes for 2 H-Indazole Synthesis. Org Lett 2024; 26:1868-1873. [PMID: 38386928 DOI: 10.1021/acs.orglett.4c00097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2024]
Abstract
We disclose the heterodifunctionalization of alkynylazobenzenes promoted exclusively by visible light in the absence of any transition metal and/or photocatalyst. This reaction features excellent regioselectivity on a broad variety of substrates with perfect atom economy. Alcohols, carboxylic acids, thiols, amides, heterocycles, and even water are suitable substrates for the promotion of the oxyamination, sulfenoamination, and diamination reactions. In this manner, biologically active indazole scaffolds can be rapidly assembled from alkyne feedstocks.
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Affiliation(s)
- Clara Mañas
- Universidad de Alcalá, Departamento de Química Orgánica y Química Inorgánica, Instituto de Investigación Andrés del Río (IQAR), Facultad de Farmacia, 28805 Alcalá de Henares, Madrid, Spain
- Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Ctra. de Colmenar Viejo, Km. 9.100, 28034 Madrid, Spain
| | - Estíbaliz Merino
- Universidad de Alcalá, Departamento de Química Orgánica y Química Inorgánica, Instituto de Investigación Andrés del Río (IQAR), Facultad de Farmacia, 28805 Alcalá de Henares, Madrid, Spain
- Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Ctra. de Colmenar Viejo, Km. 9.100, 28034 Madrid, Spain
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3
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Abstract
Nitroxides, also known as nitroxyl radicals, are long-lived or stable radicals with the general structure R1R2N-O•. The spin distribution over the nitroxide N and O atoms contributes to the thermodynamic stability of these radicals. The presence of bulky N-substituents R1 and R2 prevents nitroxide radical dimerization, ensuring their kinetic stability. Despite their reactivity toward various transient C radicals, some nitroxides can be easily stored under air at room temperature. Furthermore, nitroxides can be oxidized to oxoammonium salts (R1R2N═O+) or reduced to anions (R1R2N-O-), enabling them to act as valuable oxidants or reductants depending on their oxidation state. Therefore, they exhibit interesting reactivity across all three oxidation states. Due to these fascinating properties, nitroxides find extensive applications in diverse fields such as biochemistry, medicinal chemistry, materials science, and organic synthesis. This review focuses on the versatile applications of nitroxides in organic synthesis. For their use in other important fields, we will refer to several review articles. The introductory part provides a brief overview of the history of nitroxide chemistry. Subsequently, the key methods for preparing nitroxides are discussed, followed by an examination of their structural diversity and physical properties. The main portion of this review is dedicated to oxidation reactions, wherein parent nitroxides or their corresponding oxoammonium salts serve as active species. It will be demonstrated that various functional groups (such as alcohols, amines, enolates, and alkanes among others) can be efficiently oxidized. These oxidations can be carried out using nitroxides as catalysts in combination with various stoichiometric terminal oxidants. By reducing nitroxides to their corresponding anions, they become effective reducing reagents with intriguing applications in organic synthesis. Nitroxides possess the ability to selectively react with transient radicals, making them useful for terminating radical cascade reactions by forming alkoxyamines. Depending on their structure, alkoxyamines exhibit weak C-O bonds, allowing for the thermal generation of C radicals through reversible C-O bond cleavage. Such thermally generated C radicals can participate in various radical transformations, as discussed toward the end of this review. Furthermore, the application of this strategy in natural product synthesis will be presented.
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Affiliation(s)
- Dirk Leifert
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstrasse 40, 48149 Münster, Germany
| | - Armido Studer
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstrasse 40, 48149 Münster, Germany
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4
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Li Y, Li L, Guo C, Yan Q, Zhou H, Wang Y, Liu ZQ, Li Z. Nitro-Spirocyclization of Biaryl Ynones with tert-Butyl Nitrite: Access to NO 2-Substituted Spiro[5,5]trienones. J Org Chem 2023; 88:4854-4862. [PMID: 36947717 DOI: 10.1021/acs.joc.3c00087] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/24/2023]
Abstract
A metal/peroxide-free involved simple cascade 6-exo-trig spirocyclization of tert-butyl nitrite with biaryl ynones has been finished, which resulted in various NO2-modified spiro[5,5]trienones with good regioselectivity/yields. A variety of scaled-up experiments, reduction/epoxidation operations, and mechanistic studies were performed to verify the merits and spirocyclization process of this radical system. Finally, the structure of the spirocycles was confirmed by single-crystal X-ray diffraction.
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Affiliation(s)
- Yang Li
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, College of Chemistry and Materials Science, Key Laboratory of Chemical Biology of Hebei Province, Hebei University, Baoding, Hebei 071002, PR China
| | - Lijun Li
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, College of Chemistry and Materials Science, Key Laboratory of Chemical Biology of Hebei Province, Hebei University, Baoding, Hebei 071002, PR China
| | - Changyou Guo
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, College of Chemistry and Materials Science, Key Laboratory of Chemical Biology of Hebei Province, Hebei University, Baoding, Hebei 071002, PR China
| | - Qinqin Yan
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, College of Chemistry and Materials Science, Key Laboratory of Chemical Biology of Hebei Province, Hebei University, Baoding, Hebei 071002, PR China
| | - Hongxun Zhou
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, College of Chemistry and Materials Science, Key Laboratory of Chemical Biology of Hebei Province, Hebei University, Baoding, Hebei 071002, PR China
| | - Ying Wang
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, College of Chemistry and Materials Science, Key Laboratory of Chemical Biology of Hebei Province, Hebei University, Baoding, Hebei 071002, PR China
| | - Zhong-Quan Liu
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, PR China
| | - Zejiang Li
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, College of Chemistry and Materials Science, Key Laboratory of Chemical Biology of Hebei Province, Hebei University, Baoding, Hebei 071002, PR China
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5
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Pal PP, Ghosh S, Hajra A. Recent advances in carbosilylation of alkenes and alkynes. Org Biomol Chem 2023; 21:2272-2294. [PMID: 36852639 DOI: 10.1039/d3ob00230f] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
Alkene and alkyne difunctionalization is a flexible process that allows the construction of two functional groups simultaneously in one step. On the other hand, carbosilylation, an ingenious difunctionalization pathway to concurrently incorporate both a silyl group and an organic functional group (alkyl, (hetero)aryl, alkenyl, alkynyl and allenyl) across a carbon-carbon multiple-bond system, is achieving immense interest in recent days. This review article provides a decade's update on the discoveries and developments in the synthesis of carbosilylated products from two very important carbon-carbon unsaturated substrates, alkenes and alkynes.
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Affiliation(s)
- Prajna Paramita Pal
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India.
| | - Sumit Ghosh
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India.
| | - Alakananda Hajra
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India.
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6
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Ghotekar GS, Shinde RA, Saswade SS, Muthukrishnan M. Palladium-Catalyzed Oxidative Cyclization of α-Allenols in the Presence of TBN: Access to 3(2 H)-Furanones. J Org Chem 2023; 88:4112-4122. [PMID: 36912461 DOI: 10.1021/acs.joc.2c02457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2023]
Abstract
A new palladium-catalyzed oxidative cyclization of α-allenols is described. The readily accessible α-allenols participate in intra-molecular oxidative cyclization in the presence of TBN to grant access to multisubstituted 3(2H)-furanones, which are common motifs in several biologically important natural products and pharmaceuticals.
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Affiliation(s)
- Ganesh S Ghotekar
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, Maharashtra 411008, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Ravi A Shinde
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, Maharashtra 411008, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Sagar S Saswade
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, Maharashtra 411008, India
| | - M Muthukrishnan
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, Maharashtra 411008, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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7
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Zhou L, Huang R, Lu S, Liu B, Gao M, Xu B. Direct Nitration of Vinylcycles with Copper Nitrate. Org Lett 2023; 25:1415-1419. [PMID: 36862023 DOI: 10.1021/acs.orglett.3c00138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Abstract
A direct nitration of vinylcyclopropanes is disclosed with Cu(NO3)2 and KI in a regio- and stereoselective manner to afford nitroalkenes efficiently, where the cyclopropane skeleton was retained. The given method could be extended to other vinylcycles as well as biomolecule derivatives with wide substrate scope, good functionality tolerance, and efficient synthesis modularity. Further transformations illustrated the obtained products as versatile building blocks in organic synthesis. The proposed ionic pathway could account for the untouched small ring and the effect of KI during the reaction.
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Affiliation(s)
- Litao Zhou
- Department of Chemistry, Shanghai Engineering Research Center of Organ Repair, Innovative Drug Research Center, Shanghai University, Shanghai 200444, China
| | - Ruoxin Huang
- Department of Chemistry, Shanghai Engineering Research Center of Organ Repair, Innovative Drug Research Center, Shanghai University, Shanghai 200444, China
| | - Shaohang Lu
- Department of Chemistry, Shanghai Engineering Research Center of Organ Repair, Innovative Drug Research Center, Shanghai University, Shanghai 200444, China
| | - Bingxin Liu
- Department of Chemistry, Shanghai Engineering Research Center of Organ Repair, Innovative Drug Research Center, Shanghai University, Shanghai 200444, China
| | - Mingchun Gao
- Department of Chemistry, Affiliated Nantong Hospital of Shanghai University (The Sixth People's Hospital of Nantong), Shanghai Engineering Research Center of Organ Repair, Innovative Drug Research Center, School of Medicine, Shanghai University, Shanghai 200444, China
| | - Bin Xu
- Department of Chemistry, Affiliated Nantong Hospital of Shanghai University (The Sixth People's Hospital of Nantong), Shanghai Engineering Research Center of Organ Repair, Innovative Drug Research Center, School of Medicine, Shanghai University, Shanghai 200444, China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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8
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Li Y, Qiu J, Gao P, Zhai L, Bai ZJ, Chen HJ. KI-Catalyzed Oxidative Cyclization of Enamines and tBuONO to Access Functional Imidazole-4-Carboxylic Derivatives. J Org Chem 2022; 87:15380-15388. [DOI: 10.1021/acs.joc.2c01943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Yingchun Li
- Shaanxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji 721013, Shaanxi, P. R. China
| | - Jixia Qiu
- Shaanxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji 721013, Shaanxi, P. R. China
| | - Peng Gao
- Shaanxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji 721013, Shaanxi, P. R. China
| | - Le Zhai
- Shaanxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji 721013, Shaanxi, P. R. China
| | - Zi-Jing Bai
- Shaanxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji 721013, Shaanxi, P. R. China
| | - Huai-Juan Chen
- Shaanxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji 721013, Shaanxi, P. R. China
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9
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Patra S, Mosiagin I, Katayev D, Giri R. Organic Nitrating Reagents. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/s-0040-1719905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
AbstractNitro compounds are vital raw chemicals that are widely used in academic laboratories and industries for the preparation of various drugs, agrochemicals, and materials. Thus, nitrating reactions are of great importance for chemists and are even taught in schools as one of the fundamental transformations in organic synthesis. Since the discovery of the first nitrating reactions in the 19th century, progress in this field has been constant. Yet, for many years the classical electrophilic nitration approach using a mixture of strong mineral acids dominated the field. However, in recent decades, the attention of researchers has focused on new reactivity and new reagents that can provide access to nitro compounds in a practical and straightforward way under mild reaction conditions. Organic nitrating reagents have played a special role in this field since they have enhanced reactivity. They also allow nitration to be carried out in an ecofriendly and sustainable manner. This review examines the development and application of organic nitrating reagents.1 Introduction2 Organic Nitrating Reagents2.1 Alkyl Nitrites2.2 Nitroalkanes2.3 Alkyl Nitrates2.4 N-Nitroamides2.5 N-Nitropyrazole2.6 N-Nitropyridinium Salts3 Organic Nitrating Reagents Generated In Situ3.1 Acyl Nitrates3.2 Trimethylsilyl Nitrate3.3 Nitro Onium Salts4 Organic Nitronium Salts5 Organic Nitrates and Nitrites5.1 Ammonium Nitrates5.2 Heteroarylium Nitrates5.3 Other Organic Nitrates5.4 Organic Nitrites6 Conclusion and Outlook
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10
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Ramani A, Desai B, Patel M, Naveen T. Recent advances in the functionalization of terminal and internal alkynes. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200047] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Arti Ramani
- Sardar Vallabhbhai National Institute of Technology Department of chemistry INDIA
| | - Bhargav Desai
- Sardar Vallabhbhai National Institute of Technology Department of chemistry INDIA
| | - Monak Patel
- Sardar Vallabhbhai National Institute of Technology Department of chemistry INDIA
| | - Togati Naveen
- SVNIT Surat: Sardar Vallabhbhai National Institute of Technology Applied Chemistry Room No: 115, Applied Chemistry DepartmentSVNIT Surat 395007 SURAT INDIA
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11
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Sahoo AK, Dahiya A, Das B, Behera A, Patel BK. Visible-Light-Mediated Difunctionalization of Alkynes: Synthesis of β-Substituted Vinylsulfones Using O- and S-Centered Nucleophiles. J Org Chem 2021; 86:11968-11986. [PMID: 34346693 DOI: 10.1021/acs.joc.1c01350] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
An inimitable illustration of a green-light-induced, regioselective difunctionalization of terminal alkynes has been disclosed using sodium arylsulfinates and carboxylic acids in the presence of eosin Y as the photocatalyst. The present methodology is further demonstrated by employing NH4SCN as an S-centered nucleophile instead of carboxylic acid. The mechanistic investigation reveals a radical-induced iodosulfonylation followed by a base-mediated nucleophilic substitution. The mechanism is supported by various studies, viz., radical-trapping experiment, fluorescence quenching, and CV studies. In this protocol, (Z)-β-substituted vinylsulfones are obtained, exclusively covering a broad range of alkynes and nucleophiles, which are often unaddressed. The present strategy can tolerate structurally discrete substrates with steric bulk and different electronic properties, which provides a straightforward and practical pathway for the synthesis of highly functionalized (Z)-β-substituted vinylsulfones. Herein, C-O and C-S bonds are assembled simultaneously with the concomitant introduction of important functional groups, viz., ester, thiocyanate, and sulfone.
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Affiliation(s)
- Ashish Kumar Sahoo
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Anjali Dahiya
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Bubul Das
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Ahalya Behera
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Bhisma K Patel
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
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12
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Zhu S, Cheng Q, Yang H, Chen X, Han Y, Yan C, Shi Y, Hou H. Three-Component Radical Iodonitrosylative Cyclization of 1,6-Enynes under Metal-Free Conditions. Org Lett 2021; 23:5044-5048. [PMID: 34110172 DOI: 10.1021/acs.orglett.1c01576] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A three-component, metal-free radical cascade iodonitrosylative cyclization reaction was described. The nitroso radical was generated from tert-butyl nitrite and triggered the radical addition/cyclization/iodination/oxidation sequences. A variety of 1,6-enynes were tested and proved to be compatible, delivering various highly functionalized hetero- and all-carbon cycles and nitro and vinyl C-I bonds containing pyrrolidines, tetrahydrofuran, and cyclopentane in moderate to excellent isolated yields.
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Affiliation(s)
- Shaoqun Zhu
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, 225009, China
| | - Qi Cheng
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, 225009, China
| | - Haibo Yang
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, 225009, China
| | - Xiaoyun Chen
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212005, China
| | - Ying Han
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, 225009, China
| | - Chaoguo Yan
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, 225009, China
| | - Yaocheng Shi
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, 225009, China
| | - Hong Hou
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, 225009, China
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13
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Xu J, Ding A, Zhang Y, Guo H. Photochemical Synthesis of 1,4-Dicarbonyl Bifluorene Compounds via Oxidative Radical Coupling Using TEMPO as the Oxygen Atom Donor. J Org Chem 2021; 86:3656-3666. [PMID: 33513019 DOI: 10.1021/acs.joc.0c02781] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
A visible-light-induced metal-free synthesis of 1,4-dicarbonyl compounds from alkyne-containing aryl iodides via photochemical C-I bond cleavage, intramolecular cyclization, oxidation, and intermolecular radical coupling sequence is reported. TEMPO was employed as the oxygen atom donor in this transformation. This protocol provided a new strategy for the synthesis of 1,4-dicarbonyl bifluorene compounds.
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Affiliation(s)
- Jincheng Xu
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, People's Republic of China
| | - Aishun Ding
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, People's Republic of China
| | - Yanbin Zhang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, People's Republic of China
| | - Hao Guo
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, People's Republic of China
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14
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Hemric BN. Beyond osmium: progress in 1,2-amino oxygenation of alkenes, 1,3-dienes, alkynes, and allenes. Org Biomol Chem 2021; 19:46-81. [PMID: 33174579 DOI: 10.1039/d0ob01938k] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Olefin 1,2-difunctionalization has emerged as a popular strategy within modern synthetic chemistry for the synthesis of vicinal amino alcohols and derivatives. The advantage of this approach is the single-step simplicity for rapid diversification, feedstock nature of the olefin starting materials, and the possible modularity of the components. Although there is a vast number of possible iterations of 1,2-olefin difunctionalization, 1,2-amino oxygenation is of particular interest due to the prevalence of both oxygen and nitrogen within pharmaceuticals, natural products, agrochemicals, and synthetic ligands. The Sharpless amino hydroxylation provided seminal results in this field and displayed the value in achieving methods of this nature. However, a vast number of new and novel methods have emerged in recent decades. This review provides a comprehensive review of modern advances in accomplishing 1,2-amino oxygenation of alkenes, 1,3-dienes, alkynes, and allenes that move beyond osmium to a range of other transition metals and more modern strategies such as electrochemical, photochemical, and biochemical reactivity.
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Affiliation(s)
- Brett N Hemric
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
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15
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Wang Y, Tang K, Liu Z, Ning Y. Disulfonation of terminal alkynes for 1,2-bisulfonylethenes. Chem Commun (Camb) 2020; 56:13141-13144. [PMID: 33006590 DOI: 10.1039/d0cc05849a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
A highly efficient and operationally simple method for the synthesis of 1,2-disulfonylethenes involving a hypervalent iodineI(iii) reagent to promote disulfonation of terminal alkynes has been developed. This protocol provides a facile and practical pathway to selectively access (E)-1,2-disulfonylethenes that features good functional group compatibility, easily available starting materials, excellent stereoselectivity, and good yields.
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Affiliation(s)
- Yu Wang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun 130024, China.
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16
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Liu Y, Song H, Zhang C, Liu Y, Shi B. Copper‐Catalyzed
Modular Access to
N
‐Fused
Polycyclic Indoles and
5‐Aroyl
‐pyrrol‐2‐ones
via
Intramolecular N—H/C—H Annulation with Alkynes: Scope and Mechanism Probes. CHINESE J CHEM 2020. [DOI: 10.1002/cjoc.202000246] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Yan‐Hua Liu
- Department of Chemistry, Zhejiang University, Hangzhou Zhejiang 310027 China
| | - Hong Song
- Department of Chemistry, Zhejiang University, Hangzhou Zhejiang 310027 China
| | - Chi Zhang
- Department of Chemistry, Zhejiang University, Hangzhou Zhejiang 310027 China
| | - Yue‐Jin Liu
- Department of Chemistry, Zhejiang University, Hangzhou Zhejiang 310027 China
| | - Bing‐Feng Shi
- Department of Chemistry, Zhejiang University, Hangzhou Zhejiang 310027 China
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17
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Thapa P, Hazoor S, Chouhan B, Vuong TT, Foss FW. Flavin Nitroalkane Oxidase Mimics Compatibility with NOx/TEMPO Catalysis: Aerobic Oxidization of Alcohols, Diols, and Ethers. J Org Chem 2020; 85:9096-9105. [PMID: 32569467 DOI: 10.1021/acs.joc.0c01013] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Biomimetic flavin organocatalysts oxidize nitromethane to formaldehyde and NOx-providing a relatively nontoxic, noncaustic, and inexpensive source for catalytic NO2 for aerobic TEMPO oxidations of alcohols, diols, and ethers. Alcohols were oxidized to aldehydes or ketones, cyclic ethers to esters, and terminal diols to lactones. In situ trapping of NOx and formaldehyde suggest an oxidative Nef process reminiscent of flavoprotein nitroalkane oxidase reactivity, which is achieved by relatively stable 1,10-bridged flavins. The metal-free flavin/NOx/TEMPO catalytic cycles are uniquely compatible, especially compared to other Nef and NOx-generating processes, and reveal selectivity over flavin-catalyzed sulfoxide formation. Aliphatic ethers were oxidized by this method, as demonstrated by the conversion of (-)-ambroxide to (+)-sclareolide.
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Affiliation(s)
- Pawan Thapa
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019-0065, United States
| | - Shan Hazoor
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019-0065, United States
| | - Bikash Chouhan
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019-0065, United States
| | - Thanh Thuy Vuong
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019-0065, United States
| | - Frank W Foss
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019-0065, United States
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18
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Mir BA, Rajamanickam S, Begum P, Patel BK. tert
-Butyl Nitrite Mediated Nitro-Nitratosation of Internal Alkenes. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000149] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Bilal Ahmad Mir
- Department of Chemistry; Indian Institute of Technology Guwahati; 781039 Assam India
| | - Suresh Rajamanickam
- Department of Chemistry; Indian Institute of Technology Guwahati; 781039 Assam India
| | - Pakiza Begum
- Department of Chemistry; Indian Institute of Technology Guwahati; 781039 Assam India
| | - Bhisma K. Patel
- Department of Chemistry; Indian Institute of Technology Guwahati; 781039 Assam India
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19
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Yue X, He X, Wu Y, Hu M, Wu S, Xie Y, Li J. Metal‐Free Oxidative Decarboxylative Heteroannulation of Alkynyl Carboxylic Acids with Sulfinates and
tert
‐Butyl Nitrite toward 2,2‐Disulfonyl‐2
H
‐Azirines. ChemCatChem 2020. [DOI: 10.1002/cctc.201902400] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Xin Yue
- State Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle Nanchang Hangkong University Nanchang 330063 P.R. China
| | - Xingyi He
- State Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle Nanchang Hangkong University Nanchang 330063 P.R. China
| | - Yan‐Chen Wu
- State Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle Nanchang Hangkong University Nanchang 330063 P.R. China
| | - Ming Hu
- State Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle Nanchang Hangkong University Nanchang 330063 P.R. China
| | - Shuang Wu
- State Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle Nanchang Hangkong University Nanchang 330063 P.R. China
| | - Ye‐Xiang Xie
- State Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle Nanchang Hangkong University Nanchang 330063 P.R. China
| | - Jin‐Heng Li
- State Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle Nanchang Hangkong University Nanchang 330063 P.R. China
- Key Laboratory of Chemo/Biosensing and Chemometrics Hunan University Changsha 410082 P.R. China
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20
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Liu Z, Yang L, Zhang K, Chen W, Yu T, Wang L, Gao W, Tang B. Copper-Catalyzed Disulfonation of Terminal Alkynes with Sodium Arylsulfinates. Org Lett 2020; 22:2081-2086. [PMID: 32101442 DOI: 10.1021/acs.orglett.0c00575] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A novel and direct disulfonylation reaction of commercially available terminal alkynes under copper(I)/bromodifluoroacetate cocatalyst has been realized. This protocol provides a facile and practical pathway to selectively access (E)-1,2-disulfonylethenes, in which features good functional group compatibility, easily available starting materials, and excellent stereoselectivity with good yields.
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Affiliation(s)
- Zhenhua Liu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan, 250014, P. R. China
| | - Lin Yang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan, 250014, P. R. China
| | - Kaining Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan, 250014, P. R. China
| | - Wanjiao Chen
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan, 250014, P. R. China
| | - Tian Yu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan, 250014, P. R. China
| | - Lianxiao Wang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan, 250014, P. R. China
| | - Wen Gao
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan, 250014, P. R. China
| | - Bo Tang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan, 250014, P. R. China
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21
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Abstract
This mini-review will present the recent applications of Tert-Butyl Nitrite (TBN) in organic
synthesis. Due to its unique structural feature and wide application, TBN holds a prominent and
great potential in organic synthesis. The applications of TBN in three areas viz. aerobic oxidation,
annulation, and diazotization were reviewed recently; now, the current mini-review will describe the
studies carried out to date in areas such as nitration of alkane, alkene, alkyne, and aromatic compounds,
nitrosylation and sequential nitrosylation reactions, using TBN as source of oxygen and nitrogen.
The mechanisms of these transformations will be briefly described in this mini-review.
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Affiliation(s)
- Nader Ghaffari Khaligh
- Professor Reza Research Institute, Education Guilan, Rasht, District 1, 41569-17139, Iran
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22
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Yue X, Hu M, He X, Wu S, Li JH. A radical-mediated 1,3,4-trifunctionalization cascade of 1,3-enynes with sulfinates and tert-butyl nitrite: facile access to sulfonyl isoxazoles. Chem Commun (Camb) 2020; 56:6253-6256. [DOI: 10.1039/d0cc01659d] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
An unprecedented indium-promoted three-component 1,3,4-trifunctionalization cascade of 1,3-enynes with sulfinates and tert-butyl nitrite for producing 5-sulfonylisoxazoles via [3+2] annulation is reported.
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Affiliation(s)
- Xin Yue
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle
- Nanchang Hangkong University
- Nanchang 330063
- China
| | - Ming Hu
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle
- Nanchang Hangkong University
- Nanchang 330063
- China
| | - Xingyi He
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle
- Nanchang Hangkong University
- Nanchang 330063
- China
| | - Shuang Wu
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle
- Nanchang Hangkong University
- Nanchang 330063
- China
| | - Jin-Heng Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle
- Nanchang Hangkong University
- Nanchang 330063
- China
- State Key Laboratory of Chemo/Biosensing and Chemometrics
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23
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Lu SC, Wu B, Zhang SP, Gong YL, Xu S. K2S2O8-mediated radical cyclisation of 2-alkynylthioanisoles or -selenoanisoles: a green and regioselective route to 3-nitrobenzothiophenes and benzoselenophenes. RSC Adv 2020; 10:19083-19087. [PMID: 35518303 PMCID: PMC9054014 DOI: 10.1039/d0ra03894f] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 05/05/2020] [Indexed: 12/18/2022] Open
Abstract
An acid, transition-metal, and chromatography-free radical nitration/cyclisation of 2-alkynylthioanisoles or -selenoanisoles has been developed. This is the first example of the use of highly unstable 2-nitrovinyl radicals for C–S bond formation. This facile route efficiently produces 3-nitrobenzothiophenes and benzoselenophenes, which are difficult to access via classical methods. Density functional theory (DFT) calculations were carried out to probe the reaction mechanism. The resulting products were tested for their in vitro anti-tuberculosis activity, and compounds 2d and 2l showed significant activities against sensitive and drug-resistant strains. This is the first example of highly unstable 2-nitrovinyl radicals for C–S bond formation. The facile route efficiently functionalizes 3-nitrobenzothiophenes and benzoselenophenes, which are difficult to obtain by classical methods.![]()
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Affiliation(s)
- Shi-Chao Lu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines
- and Beijing Key Laboratory of Active Substance Discovery and Druggability Evaluation
- Institute of Materia Medica
- Chinese Academy of Medical Sciences and Peking Union Medical College
- Beijing 100050
| | - Botao Wu
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
- P. R. China
| | - Shi-Peng Zhang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines
- and Beijing Key Laboratory of Active Substance Discovery and Druggability Evaluation
- Institute of Materia Medica
- Chinese Academy of Medical Sciences and Peking Union Medical College
- Beijing 100050
| | - Ya-Ling Gong
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines
- and Beijing Key Laboratory of Active Substance Discovery and Druggability Evaluation
- Institute of Materia Medica
- Chinese Academy of Medical Sciences and Peking Union Medical College
- Beijing 100050
| | - Shu Xu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines
- and Beijing Key Laboratory of Active Substance Discovery and Druggability Evaluation
- Institute of Materia Medica
- Chinese Academy of Medical Sciences and Peking Union Medical College
- Beijing 100050
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24
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Huang J, Ding F, Rojsitthisak P, He FS, Wu J. Recent advances in nitro-involved radical reactions. Org Chem Front 2020. [DOI: 10.1039/d0qo00563k] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Significant progress in the chemistry of nitro radicals has been witnessed in the past decades, providing efficient and rapid access to nitro-containing compounds. This review describes recent advances in nitro-involved radical reactions, and summarizes various transformations.
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Affiliation(s)
- Jiapian Huang
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies
- Taizhou University
- Taizhou 318000
- China
| | - Feng Ding
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies
- Taizhou University
- Taizhou 318000
- China
| | - Pornchai Rojsitthisak
- Department of Food and Pharmaceutical Chemistry
- Faculty of Pharmaceutical Sciences
- Chulalongkorn University
- Bangkok 10330
- Thailand
| | - Fu-Sheng He
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies
- Taizhou University
- Taizhou 318000
- China
| | - Jie Wu
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies
- Taizhou University
- Taizhou 318000
- China
- State Key Laboratory of Organometallic Chemistry
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25
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Zhuang H, Li H, Zhang S, Yin Y, Han F, Sun C, Miao C. TEMPO and its derivatives mediated reactions under transition-metal-free conditions. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2019.06.027] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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26
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Song S, Kang Q, Cao T, Lei K, Liu Y, Li Q, Wei W. Cu(NO
3
)
2
/Oxone‐Mediated Radical Nitration Cyclization of 1,6‐Enynes. ChemistrySelect 2019. [DOI: 10.1002/slct.201903285] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Si‐Zhe Song
- School of Materials Science and Chemical EngineeringNingbo University Ningbo 315211 China
| | - Qing‐Qing Kang
- School of Materials Science and Chemical EngineeringNingbo University Ningbo 315211 China
| | - Ting‐Ting Cao
- School of Materials Science and Chemical EngineeringNingbo University Ningbo 315211 China
| | - Ke‐Wei Lei
- School of Materials Science and Chemical EngineeringNingbo University Ningbo 315211 China
| | - Yan‐Yun Liu
- Department of Chemistry and Materials EngineeringHuaihua University Huaihua 418008 China
| | - Qiang Li
- Institution of Functional Organic Molecules and MaterialsSchool of Chemistry and Chemical EngineeringLiaocheng University Liaocheng 252059 China
| | - Wen‐Ting Wei
- School of Materials Science and Chemical EngineeringNingbo University Ningbo 315211 China
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27
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Ma X, Huang H, Su J, Song Z, Nakano T, Song Q. Synthesis of CF
2
H‐Containing Oxime Ethers Derivatives from ClCF
2
H,
tert
‐Butyl Nitrile and Indoles. CHINESE J CHEM 2019. [DOI: 10.1002/cjoc.201900401] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Xingxing Ma
- Institute of Next Generation Matter Transformation, College of Materials Science & EngineeringHuaqiao University, 668 Jimei Blvd Xiamen Fujian 361021 China
| | - Hua Huang
- Institute of Next Generation Matter Transformation, College of Materials Science & EngineeringHuaqiao University, 668 Jimei Blvd Xiamen Fujian 361021 China
| | - Jianke Su
- Institute of Next Generation Matter Transformation, College of Materials Science & EngineeringHuaqiao University, 668 Jimei Blvd Xiamen Fujian 361021 China
| | - Zhiyi Song
- Institute for Catalysis (ICAT), Hokkaido University, N 21, W 10, Kita‐ku Sapporo 001‐0021 Japan
| | - Tamaki Nakano
- Institute for Catalysis (ICAT), Hokkaido University, N 21, W 10, Kita‐ku Sapporo 001‐0021 Japan
| | - Qiuling Song
- Institute of Next Generation Matter Transformation, College of Materials Science & EngineeringHuaqiao University, 668 Jimei Blvd Xiamen Fujian 361021 China
- Key Laboratory of Molecule Synthesis and Function DiscoveryFujian Province University, College of Chemistry, Fuzhou University Fuzhou Fujian 350108 China
- State Key Laboratroy of Organometallic Chemistry, Shanghai Institute of Organic ChemistryChinese Academy of Sciences Shanghai 200032 China
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28
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Dahiya A, Sahoo AK, Alam T, Patel BK. tert
‐Butyl Nitrite (TBN), a Multitasking Reagent in Organic Synthesis. Chem Asian J 2019; 14:4454-4492. [DOI: 10.1002/asia.201901072] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Indexed: 12/19/2022]
Affiliation(s)
- Anjali Dahiya
- Department of ChemistryIndian Institute of Technology Guwahati Guwahati- 781039 India
| | - Ashish Kumar Sahoo
- Department of ChemistryIndian Institute of Technology Guwahati Guwahati- 781039 India
| | - Tipu Alam
- Department of ChemistryIndian Institute of Technology Guwahati Guwahati- 781039 India
| | - Bhisma K. Patel
- Department of ChemistryIndian Institute of Technology Guwahati Guwahati- 781039 India
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29
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Zhang K, Jelier B, Passera A, Jeschke G, Katayev D. Synthetic Diversity from a Versatile and Radical Nitrating Reagent. Chemistry 2019; 25:12929-12939. [PMID: 31267574 DOI: 10.1002/chem.201902966] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Indexed: 12/14/2022]
Abstract
We leverage the slow liberation of nitrogen dioxide from a newly discovered, inexpensive succinimide-derived reagent to allow for the C-H diversification of alkenes and alkynes. Beyond furnishing a library of aryl β-nitroalkenes, this reagent provides unparalleled access to β-nitrohydrins and β-nitroethers. Detailed mechanistic studies strongly suggest that a mesolytic N-N bond fragmentation liberates a nitryl radical. Using in situ photo-sensitized, electron paramagnetic resonance spectroscopy, we observed direct evidence of a nitryl radical in solution by nitrone spin-trapping. To further exhibit versatility of N-nitrosuccinimide under photoredox conditions, the late-stage diversification of an extensive number of C-H partners to prepare isoxazolines and isoxazoles is presented. This approach allows for the formation of an in situ nitrile oxide from a ketone partner, the presence of which is detected by the formation of the corresponding furoxan when conducted in the absence of a dipolarophile. This 1,3-dipolar cycloaddition with nitrile oxides and alkenes or alkynes proceeds in a single-operational step using a mild, regioselective, and general protocol with broad chemoselectivity.
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Affiliation(s)
- Kun Zhang
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology, ETH Zürich, Vladimir-Prelog-Weg 2, 8093, Zürich, Switzerland
| | - Benson Jelier
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology, ETH Zürich, Vladimir-Prelog-Weg 2, 8093, Zürich, Switzerland
| | - Alessandro Passera
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology, ETH Zürich, Vladimir-Prelog-Weg 2, 8093, Zürich, Switzerland
| | - Gunnar Jeschke
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology, ETH Zürich, Vladimir-Prelog-Weg 2, 8093, Zürich, Switzerland
| | - Dmitry Katayev
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology, ETH Zürich, Vladimir-Prelog-Weg 2, 8093, Zürich, Switzerland
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30
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Wei W, Ying W, Meng X, Song S, Li Q. Copper‐Mediated Cascade Trifunctionalization of
N
‐Propargylamides. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900547] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Wen‐Ting Wei
- School of Materials Science and Chemical EngineeringNingbo University Ningbo 315211 P. R. China
| | - Wei‐Wei Ying
- School of Materials Science and Chemical EngineeringNingbo University Ningbo 315211 P. R. China
| | - Xiao‐Xiao Meng
- School of Materials Science and Chemical EngineeringNingbo University Ningbo 315211 P. R. China
| | - Si‐Zhe Song
- School of Materials Science and Chemical EngineeringNingbo University Ningbo 315211 P. R. China
| | - Qiang Li
- Institution of Functional Organic Molecules and Materials School of Chemistry and Chemical EngineeringLiaocheng University Liaocheng 252059 P. R. China
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31
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Sun Z, Ji H, Shao Y, He K, Zhang Y, Yuan Y, Jia X. Difunctionalization of the C–N Bond through tert-Butylnitrite-Initiated C–N Cleavage of 1,2,3,4-Tetrahydroisoquinolines and N,N′-Diarylimidazolidines under Transition-Metal-Free Conditions. J Org Chem 2019; 84:12292-12300. [DOI: 10.1021/acs.joc.9b01560] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Zheng Sun
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, China
| | - Honghe Ji
- College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, China
| | - Yu Shao
- School of Information Engineering, Yangzhou University, Yangzhou, Jiangsu 225127, China
| | - Kaixuan He
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, China
| | - Yuxian Zhang
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, China
| | - Yu Yuan
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, China
| | - Xiaodong Jia
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, China
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32
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Ma X, Song Q. tert-Butyl Nitrite Mediated Synthesis of Fluorinated O-Alkyloxime Ether Derivatives. Org Lett 2019; 21:7375-7379. [PMID: 31465233 DOI: 10.1021/acs.orglett.9b02689] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A tert-butyl nitrite (TBN)-mediated synthesis of fluorinated O-alkyloxime ether derivatives with bromodifluoroalkyl reagents as the fluorine sources has been developed. A variety of halodifluorinated compounds were found compatible, delivering the desired products in moderate to excellent yields. This transformation features a simple operation, can be done in air, and found to involve radicals. This protocol represents a straightforward approach to access various fluorinated O-alkyloxime ether derivatives.
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Affiliation(s)
- Xingxing Ma
- Institute of Next Generation Matter Transformation, College of Materials Science & Engineering , Huaqiao University , 668 Jimei Blvd , Xiamen , Fujian 361021 , China
| | - Qiuling Song
- Institute of Next Generation Matter Transformation, College of Materials Science & Engineering , Huaqiao University , 668 Jimei Blvd , Xiamen , Fujian 361021 , China.,Key Laboratory of Molecule Synthesis and Function Discovery, Fujian Province University , College of Chemistry at Fuzhou University , Fuzhou , Fujian 350108 , China.,State Key Laboratroy of Organometallic Chemistry , Shanghai Institute of Organic Chemistry , CAS, Shanghai , 200032 , China
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33
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Gao S, Ma Y, Tang H, Luo J, Wang K. Cu–Catalyzed C5 Nitration of Indolines under Mild Conditions. ChemistrySelect 2019. [DOI: 10.1002/slct.201902743] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Shanshan Gao
- Materials Science and Chemical EngineeringNingbo University, Ningbo P. R. China 315211
| | - Yaorui Ma
- Materials Science and Chemical EngineeringNingbo University, Ningbo P. R. China 315211
| | - Hao Tang
- Materials Science and Chemical EngineeringNingbo University, Ningbo P. R. China 315211
| | - Junfei Luo
- Materials Science and Chemical EngineeringNingbo University, Ningbo P. R. China 315211
| | - Kuan Wang
- College of Chemistry and Chemistry EngineeringShanxi Key Laboratory of Chemistry Additives for IndustryShanxi University of Science & Technology,Xi'an P. R. China 710021
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34
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Huang C, Wang JH, Qiao J, Fan XW, Chen B, Tung CH, Wu LZ. Direct Arylation of Unactivated Alkanes with Heteroarenes by Visible-Light Catalysis. J Org Chem 2019; 84:12904-12912. [DOI: 10.1021/acs.joc.9b01603] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Cheng Huang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing 100190, P.R. China
- School of Future Technology, University of Chinese Academy of Science, Beijing 100049, P.R. China
| | - Jing-Hao Wang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing 100190, P.R. China
- School of Future Technology, University of Chinese Academy of Science, Beijing 100049, P.R. China
| | - Jia Qiao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing 100190, P.R. China
- School of Future Technology, University of Chinese Academy of Science, Beijing 100049, P.R. China
| | - Xiu-Wei Fan
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing 100190, P.R. China
- School of Future Technology, University of Chinese Academy of Science, Beijing 100049, P.R. China
| | - Bin Chen
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing 100190, P.R. China
- School of Future Technology, University of Chinese Academy of Science, Beijing 100049, P.R. China
| | - Chen-Ho Tung
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing 100190, P.R. China
- School of Future Technology, University of Chinese Academy of Science, Beijing 100049, P.R. China
| | - Li-Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing 100190, P.R. China
- School of Future Technology, University of Chinese Academy of Science, Beijing 100049, P.R. China
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35
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Zhu D, Li M, Wu Z, Du Y, Luo B, Huang P, Wen S. Copper-Catalyzed One-Pot Synthesis of Dibenzofurans, Xanthenes, and Xanthones from Cyclic Diphenyl Iodoniums. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900745] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Daqian Zhu
- School of pharmacy; Guangdong Pharmaceutical University; 280 Waihuan East Road 510006 Guangzhou China
- State Key Laboratory of Oncology in South China; Collaborative Innovation Center for Cancer Medicine; Sun Yat-sen University, Cancer Center; 651 Dongfeng East Road 510060 Guangzhou China
| | - Min Li
- State Key Laboratory of Oncology in South China; Collaborative Innovation Center for Cancer Medicine; Sun Yat-sen University, Cancer Center; 651 Dongfeng East Road 510060 Guangzhou China
- Collaborative Innovation Center for Cancer Medicine; Changsha Medical University; 1501 Leifeng Road 410219 Changsha China
| | - Zhouming Wu
- State Key Laboratory of Oncology in South China; Collaborative Innovation Center for Cancer Medicine; Sun Yat-sen University, Cancer Center; 651 Dongfeng East Road 510060 Guangzhou China
| | - Yongliang Du
- State Key Laboratory of Oncology in South China; Collaborative Innovation Center for Cancer Medicine; Sun Yat-sen University, Cancer Center; 651 Dongfeng East Road 510060 Guangzhou China
| | - Bingling Luo
- State Key Laboratory of Oncology in South China; Collaborative Innovation Center for Cancer Medicine; Sun Yat-sen University, Cancer Center; 651 Dongfeng East Road 510060 Guangzhou China
| | - Peng Huang
- State Key Laboratory of Oncology in South China; Collaborative Innovation Center for Cancer Medicine; Sun Yat-sen University, Cancer Center; 651 Dongfeng East Road 510060 Guangzhou China
| | - Shijun Wen
- State Key Laboratory of Oncology in South China; Collaborative Innovation Center for Cancer Medicine; Sun Yat-sen University, Cancer Center; 651 Dongfeng East Road 510060 Guangzhou China
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36
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Ansari MY, Kumar N, Kumar A. Regioselective Intermolecular Sulfur–Oxygen Difunctionalization (Phenoxysulfonylation) of Alkynes: One-Pot Construction of (Z)-β-Phenoxy Vinylsulfones. Org Lett 2019; 21:3931-3936. [DOI: 10.1021/acs.orglett.9b01041] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Mohd Yeshab Ansari
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, P.O. Box 173, Lucknow 226031, India
| | - Navaneet Kumar
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, P.O. Box 173, Lucknow 226031, India
| | - Atul Kumar
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, P.O. Box 173, Lucknow 226031, India
- Academy of Scientific and Innovative Research, New Delhi 110001, India
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37
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Mudithanapelli C, Dhorma LP, Kim MH. PIFA-Promoted, Solvent-Controlled Selective Functionalization of C(sp2)–H or C(sp3)–H: Nitration via C–N Bond Cleavage of CH3NO2, Cyanation, or Oxygenation in Water. Org Lett 2019; 21:3098-3102. [DOI: 10.1021/acs.orglett.9b00751] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Chandrashekar Mudithanapelli
- Gachon Institute of Pharmaceutical Science & Department of Pharmacy, College of Pharmacy, Gachon University, 191 Hambakmoeiro, Yeonsu-gu, Incheon 21936, Republic of Korea
| | - Lama Prema Dhorma
- Gachon Institute of Pharmaceutical Science & Department of Pharmacy, College of Pharmacy, Gachon University, 191 Hambakmoeiro, Yeonsu-gu, Incheon 21936, Republic of Korea
| | - Mi-hyun Kim
- Gachon Institute of Pharmaceutical Science & Department of Pharmacy, College of Pharmacy, Gachon University, 191 Hambakmoeiro, Yeonsu-gu, Incheon 21936, Republic of Korea
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38
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Gao M, Zhou K, Xu B. Copper Nitrate‐Mediated Selective Difunctionalization of Alkenes: A Rapid Access to β‐Bromonitrates. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900016] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Mingchun Gao
- Department of Chemistry, Innovative Drug Research Center, School of Materials Science and EngineeringShanghai University Shanghai 200444, People's Republic of China
| | - Kaijing Zhou
- Department of Chemistry, Innovative Drug Research Center, School of Materials Science and EngineeringShanghai University Shanghai 200444, People's Republic of China
| | - Bin Xu
- Department of Chemistry, Innovative Drug Research Center, School of Materials Science and EngineeringShanghai University Shanghai 200444, People's Republic of China
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic Chemistry, Chinese Academy of Sciences Shanghai 200032 People's Republic of China
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39
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Beejapur HA, Zhang Q, Hu K, Zhu L, Wang J, Ye Z. TEMPO in Chemical Transformations: From Homogeneous to Heterogeneous. ACS Catal 2019. [DOI: 10.1021/acscatal.8b05001] [Citation(s) in RCA: 88] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Hazi Ahmad Beejapur
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang Province Key Laboratory of Biofuel, Biodiesel Laboratory of China Petroleum and Chemical Industry Federation, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Qi Zhang
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang Province Key Laboratory of Biofuel, Biodiesel Laboratory of China Petroleum and Chemical Industry Federation, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Kecheng Hu
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang Province Key Laboratory of Biofuel, Biodiesel Laboratory of China Petroleum and Chemical Industry Federation, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Li Zhu
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang Province Key Laboratory of Biofuel, Biodiesel Laboratory of China Petroleum and Chemical Industry Federation, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Jianli Wang
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang Province Key Laboratory of Biofuel, Biodiesel Laboratory of China Petroleum and Chemical Industry Federation, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Zhibin Ye
- Department of Chemical and Materials Engineering, Concordia University, Montreal, Quebec H3G 1M8, Canada
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40
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Baccalini A, Vergura S, Dolui P, Zanoni G, Maiti D. Recent advances in cobalt-catalysed C–H functionalizations. Org Biomol Chem 2019; 17:10119-10141. [DOI: 10.1039/c9ob01994d] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Ready availability, low cost and low toxicity of cobalt salts have redirected the attention of researchers away from noble metals, such as Pd, Rh, and Ir, towards Co in the field of C–H functionalisation.
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Affiliation(s)
| | | | - Pravas Dolui
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
| | | | - Debabrata Maiti
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
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41
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Sureshbabu P, Azeez S, Chaudhary P, Kandasamy J. tert-Butyl nitrite promoted transamidation of secondary amides under metal and catalyst free conditions. Org Biomol Chem 2019; 17:845-850. [DOI: 10.1039/c8ob03010c] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Transamidation of secondary amides with various amines is demonstrated using tert-butyl nitrite. The reaction proceeds through the N-nitrosamide intermediate and provides the desired products in excellent yields.
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Affiliation(s)
- Popuri Sureshbabu
- Department of chemistry
- Indian Institute of Technology (BHU)
- Varanasi
- India
| | - Sadaf Azeez
- Department of chemistry
- Indian Institute of Technology (BHU)
- Varanasi
- India
| | - Priyanka Chaudhary
- Department of chemistry
- Indian Institute of Technology (BHU)
- Varanasi
- India
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42
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He X, Yue X, Zhang L, Wu S, Hu M, Li JH. Multiple-functionalizations of terminal alkynes with sodium sulfinates and tert-butyl nitrite: facile synthesis of 2H-azirines. Chem Commun (Camb) 2019; 55:3517-3520. [DOI: 10.1039/c9cc00625g] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A new, catalyst-free tandem annulation route to 2,2-disulfonyl-2H-azirines via multiple-functionalizations of terminal alkynes with sodium sulfinates and tert-butyl nitrite is described.
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Affiliation(s)
- Xingyi He
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle
- Nanchang Hangkong University
- Nanchang 330063
- China
| | - Xin Yue
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle
- Nanchang Hangkong University
- Nanchang 330063
- China
| | - Lei Zhang
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle
- Nanchang Hangkong University
- Nanchang 330063
- China
| | - Shuang Wu
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle
- Nanchang Hangkong University
- Nanchang 330063
- China
| | - Ming Hu
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle
- Nanchang Hangkong University
- Nanchang 330063
- China
| | - Jin-Heng Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle
- Nanchang Hangkong University
- Nanchang 330063
- China
- State Key Laboratory of Chemo/Biosensing and Chemometrics
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43
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Chaudhary P, Gupta S, Muniyappan N, Sabiah S, Kandasamy J. Regioselective Nitration of N-Alkyl Anilines using tert-Butyl Nitrite under Mild Condition. J Org Chem 2018; 84:104-119. [DOI: 10.1021/acs.joc.8b02377] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Priyanka Chaudhary
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh 221005, India
| | - Surabhi Gupta
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh 221005, India
| | | | | | - Jeyakumar Kandasamy
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh 221005, India
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44
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45
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Liu W, Zhang Y, Guo H. Nitration and Cyclization of Arene-Alkynes: An Access to 9-Nitrophenathrenes. J Org Chem 2018; 83:10518-10524. [PMID: 30074780 DOI: 10.1021/acs.joc.8b01201] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A nitration and cyclization of arene-alkynes has been developed, affording 9-nitrophenathrenes efficiently. This reaction probably proceeds via addition of the nitrogen dioxide to the alkyne moiety, intramolecular radical addition of vinyl radical to one aryl ring, oxidation of radical intermediate into carbocation species, and elimination of a proton. In this transformation, Fe(NO3)3 was used as both nitro source and oxidant.
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Affiliation(s)
- Wangsheng Liu
- Department of Chemistry , Fudan University , 2005 Songhu Road , Shanghai , 200438 , P. R. China
| | - Yanbin Zhang
- Department of Chemistry , Fudan University , 2005 Songhu Road , Shanghai , 200438 , P. R. China
| | - Hao Guo
- Department of Chemistry , Fudan University , 2005 Songhu Road , Shanghai , 200438 , P. R. China.,Academy for Engineering and Technology , Fudan University , 220 Handan Road , Shanghai , 200433 , P. R. China
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46
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Mir BA, Singh SJ, Kumar R, Patel BK. tert-
Butyl Nitrite Mediated Different Functionalizations of Internal Alkenes: Paths to Furoxans and Nitroalkenes. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800668] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Bilal Ahmad Mir
- Department of Chemistry; Indian Institute of Technology Guwahati, North Guwahati; 781 039 Assam India
| | | | - Ritush Kumar
- Department of Chemistry; Indian Institute of Technology Guwahati, North Guwahati; 781 039 Assam India
| | - Bhisma K. Patel
- Department of Chemistry; Indian Institute of Technology Guwahati, North Guwahati; 781 039 Assam India
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47
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Liu Q, Liu JJ, Cheng L, Wang D, Liu L. TEMPO promoted direct multi-functionalization of terminal alkynes with 2-oxindoles/benzofuran-2(3H)-one. Org Biomol Chem 2018; 16:5228-5231. [PMID: 29989130 DOI: 10.1039/c8ob01380b] [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
Highly selective and catalyst-free tandem multi-functionalization of terminal alkynes was developed with 2-oxindoles and benzo-furan-2(3H)-one using TEMPO both as a radical promoter and a trapping reagent. This work expands the scope of the radical-cascade addition/trapping process of alkynes for the effective construction of various β-oxyl carbonyls in moderate to good yields.
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Affiliation(s)
- Qi Liu
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
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48
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Khaligh NG. A facile and sustainable protocol to the preparation of aryl iodides using stable arenediazonium bis(trifluoromethylsulfonyl)imide salts via the telescopic process. HETEROATOM CHEMISTRY 2018. [DOI: 10.1002/hc.21418] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Nader Ghaffari Khaligh
- Nanotechnology and Catalysis Research Center; Institute of Postgraduate Studies; University of Malaya; Kuala Lumpur Malaysia
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49
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Shahin MI, Roy J, Hanafi M, Wang D, Luesakul U, Chai Y, Muangsin N, Lasheen DS, Abou El Ella DA, Abouzid KA, Neamati N. Synthesis and biological evaluation of novel 2-oxo-1,2-dihydroquinoline-4-carboxamide derivatives for the treatment of esophageal squamous cell carcinoma. Eur J Med Chem 2018; 155:516-530. [PMID: 29908444 DOI: 10.1016/j.ejmech.2018.05.042] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 05/21/2018] [Accepted: 05/25/2018] [Indexed: 01/07/2023]
Abstract
No new and effective treatments have been approved for the treatment of esophageal squamous cell carcinoma (ESCC) in the past decade. Cisplatin and 5-fluoruracil are the most commonly used drugs for this disease. In order to develop a new class of drugs effective in our ESCC phenotypic screens, we began a systematic approach to generate novel compounds based on the 2-oxo-1,2-dihydroquinoline-4-carboxamide fragment. Herein, we report on the synthesis and initial assessment of 55 new analogues in two ESCC cell lines. Some of the active analogues with IC50 values around 10 μM were tested in three additional cell lines. Our structure-activity relationships revealed remarkable alterations in the anti proliferative activities upon modest chemical modifications and autophagy modulation is a suggested mechanism of action.
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Affiliation(s)
- Mai I Shahin
- Department of Medicinal Chemistry, College of Pharmacy, University of Michigan, North Campus Research Complex, 1600 Huron Parkway, Ann Arbor, MI, 48109, United States; Pharmaceutical Chemistry Department, Faculty of Pharmacy, Ain Shams University, Abbassia, Cairo, 11566, Egypt
| | - Joyeeta Roy
- Department of Medicinal Chemistry, College of Pharmacy, University of Michigan, North Campus Research Complex, 1600 Huron Parkway, Ann Arbor, MI, 48109, United States
| | - Maha Hanafi
- Department of Medicinal Chemistry, College of Pharmacy, University of Michigan, North Campus Research Complex, 1600 Huron Parkway, Ann Arbor, MI, 48109, United States; Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Cairo University, Cairo, 11562, Egypt
| | - Dongyao Wang
- Department of Medicinal Chemistry, College of Pharmacy, University of Michigan, North Campus Research Complex, 1600 Huron Parkway, Ann Arbor, MI, 48109, United States; School of Pharmacy, Second Military Medical University, 200433, Shanghai, China
| | - Urarika Luesakul
- Department of Medicinal Chemistry, College of Pharmacy, University of Michigan, North Campus Research Complex, 1600 Huron Parkway, Ann Arbor, MI, 48109, United States; Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Yifeng Chai
- School of Pharmacy, Second Military Medical University, 200433, Shanghai, China
| | - Nongnuj Muangsin
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Deena S Lasheen
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Ain Shams University, Abbassia, Cairo, 11566, Egypt
| | - Dalal A Abou El Ella
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Ain Shams University, Abbassia, Cairo, 11566, Egypt; Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Nahda University, 62511, Beni Suef, Egypt
| | - Khaled A Abouzid
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Ain Shams University, Abbassia, Cairo, 11566, Egypt
| | - Nouri Neamati
- Department of Medicinal Chemistry, College of Pharmacy, University of Michigan, North Campus Research Complex, 1600 Huron Parkway, Ann Arbor, MI, 48109, United States.
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50
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Khaligh NG, Mihankhah T, Johan MR, Ching JJ. Saccharin: an efficient organocatalyst for the one-pot synthesis of 4-amidocinnolines under metal and halogen-free conditions. MONATSHEFTE FUR CHEMIE 2018. [DOI: 10.1007/s00706-018-2174-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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