1
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Zhi S, Ma X, Zhang W. Radical Cyclization-Initiated Difunctionalization Reactions of Alkenes and Alkynes. Molecules 2024; 29:2559. [PMID: 38893437 PMCID: PMC11173560 DOI: 10.3390/molecules29112559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Revised: 05/23/2024] [Accepted: 05/25/2024] [Indexed: 06/21/2024] Open
Abstract
Radical reactions are powerful in the synthesis of diverse molecular scaffolds bearing functional groups. In previous review articles, we have presented 1,2-difunctionalizations, remote 1,3-, 1,4-, 1,5-, 1,6- and 1,7-difunctionalizations, and addition followed by cyclization reactions. Presented in this paper is radical cyclization followed by the second functionalization reaction. The second functionalization could be realized by atom transfer reactions, radical or transition metal-assisted coupling reactions, and reactions with neutral molecules, cationic and anionic species.
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Affiliation(s)
- Sanjun Zhi
- Jiangsu Key Laboratory for the Chemistry of Low-Dimensional Materials, Huaiyin Normal University, 111 Changjiang West Road, Huaian 223300, China;
| | - Xiaoming Ma
- School of Pharmacy, Changzhou University, 1 Gehu Road, Changzhou 213164, China;
| | - Wei Zhang
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Boulevard, Boston, MA 02125, USA
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2
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Sharma YB, Das D, Guru MM. Cu(II)-Catalyzed Aminocyclization of N-Propargyl Hydrazones to Substituted Pyrazolines. J Org Chem 2023; 88:16340-16351. [PMID: 37947756 DOI: 10.1021/acs.joc.3c01848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2023]
Abstract
An efficient route for the copper(II)-catalyzed synthesis of substituted pyrazolines from readily accessible N-propargyl hydrazones has been reported under open flask conditions via intramolecular C-N bond formation. N-acyl and N-tosyl-substituted pyrazolines have been prepared in moderate to excellent yields. Mechanistic investigations using NMR, high-resolution mass spectrometry (HRMS), and Hammett analyses suggest that the Cu(II) catalyst generally acts as a Lewis acid to form an iminium-ion intermediate via cyclization, which afforded the desired pyrazolines upon hydrolysis. One progesterone receptor antagonist has also been synthesized utilizing this reaction methodology.
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Affiliation(s)
- Yogesh Brijwashi Sharma
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research Kolkata, Kolkata 700054, India
| | - Debosmita Das
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research Kolkata, Kolkata 700054, India
| | - Murali Mohan Guru
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research Kolkata, Kolkata 700054, India
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3
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Electrochemical oxythiocyanation of ortho-olefinic amides: access to diverse thiocyanated benzoxazines. Tetrahedron Lett 2023. [DOI: 10.1016/j.tetlet.2023.154341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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4
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Chen H, Shi X, Liu X, Zhao L. Recent progress of direct thiocyanation reactions. Org Biomol Chem 2022; 20:6508-6527. [PMID: 35942781 DOI: 10.1039/d2ob01018f] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Thiocyanates are common in natural products, synthetic drugs and bioactive molecules. Many thiocyanate derivatives show excellent antibacterial, antiparasitic and anticancer activities. Thiocyanation can introduce SCN groups into parent molecules for constructing SCN-containing small organic molecules. Among them, the direct introduction method mainly includes nucleophilic reaction, electrophilic reaction and free radical reaction, which can simply and quickly introduce SCN groups at the target sites to construct thiocyanates, and has broad application prospects. In this review, we summarize the research progress of direct thiocyanation in recent years.
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Affiliation(s)
- Haixin Chen
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan 528458, China.
| | - Xiaotian Shi
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan 528458, China.
| | - Xiang Liu
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan 528458, China.
| | - Limin Zhao
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan 528458, China.
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5
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Ramos De Dios SM, Tiwari VK, McCune CD, Dhokale RA, Berkowitz DB. Biomacromolecule-Assisted Screening for Reaction Discovery and Catalyst Optimization. Chem Rev 2022; 122:13800-13880. [PMID: 35904776 DOI: 10.1021/acs.chemrev.2c00213] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Reaction discovery and catalyst screening lie at the heart of synthetic organic chemistry. While there are efforts at de novo catalyst design using computation/artificial intelligence, at its core, synthetic chemistry is an experimental science. This review overviews biomacromolecule-assisted screening methods and the follow-on elaboration of chemistry so discovered. All three types of biomacromolecules discussed─enzymes, antibodies, and nucleic acids─have been used as "sensors" to provide a readout on product chirality exploiting their native chirality. Enzymatic sensing methods yield both UV-spectrophotometric and visible, colorimetric readouts. Antibody sensors provide direct fluorescent readout upon analyte binding in some cases or provide for cat-ELISA (Enzyme-Linked ImmunoSorbent Assay)-type readouts. DNA biomacromolecule-assisted screening allows for templation to facilitate reaction discovery, driving bimolecular reactions into a pseudo-unimolecular format. In addition, the ability to use DNA-encoded libraries permits the barcoding of reactants. All three types of biomacromolecule-based screens afford high sensitivity and selectivity. Among the chemical transformations discovered by enzymatic screening methods are the first Ni(0)-mediated asymmetric allylic amination and a new thiocyanopalladation/carbocyclization transformation in which both C-SCN and C-C bonds are fashioned sequentially. Cat-ELISA screening has identified new classes of sydnone-alkyne cycloadditions, and DNA-encoded screening has been exploited to uncover interesting oxidative Pd-mediated amido-alkyne/alkene coupling reactions.
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Affiliation(s)
| | - Virendra K Tiwari
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, United States
| | - Christopher D McCune
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, United States
| | - Ranjeet A Dhokale
- Higuchi Biosciences Center, University of Kansas, Lawrence, Kansas 66047, United States
| | - David B Berkowitz
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, United States
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6
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Cao S, Li H, Teng X, Si H, Chen R, Zhu Y. Access to Fully Substituted Dihydropyrimidines via Dual Copper/Photoredox‐Catalyzed Domino Annulation of Oxime Esters and Imines. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200736] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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7
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Chen X, Shen YT, Zhao ZW, Hou YJ, Sun BX, Fan TG, Li YM. Oxy‐/Amino‐Difluoromethylthiolation of Alkenes: Synthesis of HCF2S‐Containing Isoxazolines and Pyrazolines. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xin Chen
- Kunming University of Science and Technology CHINA
| | - Yun-Tao Shen
- Kunming University of Science and Technology CHINA
| | - Zhi-Wei Zhao
- Kunming University of Science and Technology CHINA
| | - Yu-Jian Hou
- Kunming University of Science and Technology CHINA
| | - Bo-Xun Sun
- Kunming University of Science and Technology CHINA
| | - Tai-Gang Fan
- Kunming University of Science and Technology CHINA
| | - Ya-Min Li
- Kunming University of Science and Technology CHINA
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8
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He WB, Zhao SJ, Chen JY, Jiang J, Chen X, Xu X, He WM. External electrolyte-free electrochemical one-pot cascade synthesis of 4-thiocyanato-1H-pyrazoles. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.06.063] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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9
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Tao S, Huo A, Gao Y, Zhang X, Yang J, Du Y. PhICl2-Mediated Regioselective and Electrophilic Oxythio/Selenocyanation of o-(1-Alkynyl)benzoates: Access to Biologically Active S/SeCN-Containing Isocoumarins. Front Chem 2022; 10:859995. [PMID: 35665060 PMCID: PMC9158338 DOI: 10.3389/fchem.2022.859995] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Accepted: 02/28/2022] [Indexed: 12/11/2022] Open
Abstract
The application of PhICl2/NH4SCN and PhICl2/KSeCN reagent systems to the synthesis of the biologically active S/SeCN-containing isocoumarins via a process involving thio/selenocyanation, enabled by thio/selenocyanogen chloride generated in situ, followed with an intramolecular lactonization was realized. Gram-scale synthesis, further derivatization to access C4 thio/selenocyanated Xyridin A and anti-tumor activities of the obtained products highlight the potential use of this method.
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Affiliation(s)
- Shanqing Tao
- Tianjin Key Laboratory for Modern Drug Delivery and High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, China
| | - Aiwen Huo
- Hebei Key Laboratory of State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, China
| | - Yan Gao
- Tianjin Key Laboratory for Modern Drug Delivery and High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, China
| | - Xiangyang Zhang
- Tianjin Key Laboratory for Modern Drug Delivery and High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, China
| | - Jingyue Yang
- Hebei Key Laboratory of State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, China
- *Correspondence: Yunfei Du, ; Jingyue Yang,
| | - Yunfei Du
- Tianjin Key Laboratory for Modern Drug Delivery and High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, China
- *Correspondence: Yunfei Du, ; Jingyue Yang,
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10
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Karmaker PG, Alam MA, Huo F. Recent advances in photochemical and electrochemically induced thiocyanation: a greener approach for SCN-containing compound formation. RSC Adv 2022; 12:6214-6233. [PMID: 35424569 PMCID: PMC8981651 DOI: 10.1039/d1ra09060g] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 02/10/2022] [Indexed: 12/28/2022] Open
Abstract
Techniques utilizing photo- and electrochemically induced reactions have been developed to accelerate organic processes. These techniques use light or electrical energy (electron transfer) as a direct energy source without using an initiator or reagent. Thiocyanates are found in biologically active and pharmacological compounds and can be converted into various functional groups. It is one of the most prominent organic scaffolds. Significant development in photo- and electro-chemically induced thiocyanation procedures has been made in recent years for the conception of carbon-sulfur bonds and synthesis of pharmaceutically important molecules. This review discusses different photo- and electro-chemically driven thiocyanation C(sp3)-SCN, C(sp2)-SCN, and C(sp)-SCN bond conception processes that may be useful to green organothiocyanate synthesis. We focus on the synthetic and mechanistic characteristics of organic photo- and electrochemically accelerated C-SCN bond formation thiocyanation reactions to highlight major advances in this novel green and sustainable research field.
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Affiliation(s)
- Pran Gopal Karmaker
- School of Chemistry and Chemical Engineering, Analytical Testing Center, Institute of Micro & Nano Intelligent Sensing, Neijiang Normal University Neijiang 641100 P. R. China
| | - Md Asraful Alam
- School of Chemical Engineering, Zhengzhou University Zhengzhou 450001 Henan China
| | - Feng Huo
- School of Chemistry and Chemical Engineering, Analytical Testing Center, Institute of Micro & Nano Intelligent Sensing, Neijiang Normal University Neijiang 641100 P. R. China
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11
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Gao M, Vuagnat M, Jubault P, Besset T. N
‐Thiocyanato‐2,10‐camphorsultam Derivatives: Design and Applications of Original Electrophilic Thiocyanating Reagents. European J Org Chem 2022. [DOI: 10.1002/ejoc.202101255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Mélissa Gao
- Normandie Univ INSA Rouen UNIROUEN CNRS COBRA (UMR 6014) 76000 Rouen France
| | - Martin Vuagnat
- Normandie Univ INSA Rouen UNIROUEN CNRS COBRA (UMR 6014) 76000 Rouen France
| | - Philippe Jubault
- Normandie Univ INSA Rouen UNIROUEN CNRS COBRA (UMR 6014) 76000 Rouen France
| | - Tatiana Besset
- Normandie Univ INSA Rouen UNIROUEN CNRS COBRA (UMR 6014) 76000 Rouen France
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12
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Cao S, Ma C, Teng X, Chen R, Li Y, Yuan W, Zhu Y. Facile synthesis of fully substituted 1 H-imidazoles from oxime esters via dual photoredox/copper catalyzed multicomponent reactions. Org Chem Front 2022. [DOI: 10.1039/d2qo01475k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
A novel and efficient photoredox/copper cocatalyzed domino cyclization of oxime esters, aldehydes, and amines has been achieved, affording a broad range of fully substituted 1H-imidazoles in good yields.
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Affiliation(s)
- Shujun Cao
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Chongchong Ma
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Xinjie Teng
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Rongshun Chen
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Yun Li
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Weidong Yuan
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Yingguang Zhu
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
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13
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Yang G, Liu Y, Lin X, Ming B, Li K, Hu C. Self-assembly of a new 3D platelike ternary-oxo-cluster: An efficient catalyst for the synthesis of pyrazoles. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.05.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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14
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Li H, Chen P, Wu Z, Lu Y, Peng J, Chen J, He W. Electrochemical Oxidative Cross-Dehydrogenative Coupling of Five-Membered Aromatic Heterocycles with NH 4SCN. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202207009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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15
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Xiao J, Ai Z, Li X, Tao S, Zhao B, Wang X, Wang X, Du Y. Synthesis of 3-thiocyanated chromones via TCCA/NH4SCN-mediated cyclization/thiocyanation of alkynyl aryl ketones. GREEN SYNTHESIS AND CATALYSIS 2021. [DOI: 10.1016/j.gresc.2021.12.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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16
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Lv Y, Meng J, Li C, Wang X, Ye Y, Sun K. Update on the Synthesis of N‐Heterocycles via Cyclization of Hydrazones (2017–2021). Adv Synth Catal 2021. [DOI: 10.1002/adsc.202101184] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Yunhe Lv
- College of Chemistry and Chemical Engineering Anyang Normal University Anyang 4550008 People's Republic of China
| | - Jianping Meng
- College of Chemistry and Chemical Engineering Yantai University Yantai 264005 People's Republic of China
| | - Chen Li
- College of Chemistry and Chemical Engineering Yantai University Yantai 264005 People's Republic of China
| | - Xin Wang
- College of Chemistry and Chemical Engineering Yantai University Yantai 264005 People's Republic of China
| | - Yong Ye
- College of Chemistry Zhengzhou University Zhengzhou 450001 People's Republic of China
| | - Kai Sun
- College of Chemistry and Chemical Engineering Yantai University Yantai 264005 People's Republic of China
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17
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Affiliation(s)
- Ya‐Feng Si
- School of Biology Zhengzhou University Zhengzhou 450001 People's Republic of China
- Green Catalysis Center, College of Chemistry Zhengzhou University Zhengzhou 450001 People's Republic of China
| | - Qi‐Yan Lv
- School of Biology Zhengzhou University Zhengzhou 450001 People's Republic of China
- Green Catalysis Center, College of Chemistry Zhengzhou University Zhengzhou 450001 People's Republic of China
| | - Bing Yu
- Green Catalysis Center, College of Chemistry Zhengzhou University Zhengzhou 450001 People's Republic of China
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18
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Tao S, Xiao J, Li Y, Sun F, Du Y. PhICl
2
/
NH
4
SCN‐Mediated
Oxidative Regioselective Thiocyanation of Pyridin‐2(
1
H
)‐ones. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202100278] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Shanqing Tao
- Tianjin Key Laboratory for Modern Drug Delivery & High‐Efficiency, School of Pharmaceutical Science and Technology Tianjin University Tianjin 300072 China
| | - Jiaxi Xiao
- Tianjin Key Laboratory for Modern Drug Delivery & High‐Efficiency, School of Pharmaceutical Science and Technology Tianjin University Tianjin 300072 China
| | - Yadong Li
- Tianjin Key Laboratory for Modern Drug Delivery & High‐Efficiency, School of Pharmaceutical Science and Technology Tianjin University Tianjin 300072 China
| | - Fengxia Sun
- College of Chemical and Pharmaceutical Engineering Hebei University of Science and Technology; Hebei Research Center of Pharmaceutical and Chemical Engineering Shijiazhuang Hebei 050018 China
| | - Yunfei Du
- Tianjin Key Laboratory for Modern Drug Delivery & High‐Efficiency, School of Pharmaceutical Science and Technology Tianjin University Tianjin 300072 China
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19
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Gao M, Vuagnat M, Chen MY, Pannecoucke X, Jubault P, Besset T. Design and Use of Electrophilic Thiocyanating and Selenocyanating Reagents: An Interesting Trend for the Construction of SCN- and SeCN-Containing Compounds. Chemistry 2021; 27:6145-6160. [PMID: 33283371 DOI: 10.1002/chem.202004974] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Indexed: 01/01/2023]
Abstract
Organothiocyanate and organoselenocyanate compounds are of paramount importance in organic chemistry as they are key intermediates to access sulfur- and selenium-containing compounds. Therefore, among the different synthetic pathways to get SCN- and SeCN-containing molecules, original methodologies using electrophilic reagents have recently been explored. This Minireview will showcase the recent advances that have been made. In particular, the design of several electrophilic sources and their applications for the thiocyanation and the selenocyanation of various classes of compounds will be highlighted and discussed.
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Affiliation(s)
- Mélissa Gao
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000, Rouen, France
| | - Martin Vuagnat
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000, Rouen, France
| | - Mu-Yi Chen
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000, Rouen, France
| | - Xavier Pannecoucke
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000, Rouen, France
| | - Philippe Jubault
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000, Rouen, France
| | - Tatiana Besset
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000, Rouen, France
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20
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Hu G, Li P, Zhou Z, Yang F, Xu S, Fan H, Zhao X, Zhang X. NBS-assisted palladium-catalyzed bromination/cross-coupling reaction of 2-alkynyl arylazides with KSCN: an efficient method to synthesize 3-thiocyanindoles. NEW J CHEM 2021. [DOI: 10.1039/d0nj05894g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
An efficient NBS-assisted palladium-catalyzed bromination/cross-coupling synthesis of 3-thiocyanindoles from 2-alkynyl arylazides with KSCN has been described.
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Affiliation(s)
- Guiwen Hu
- Co-Innovation Center for Efficient Processing and Utilization of Forest Products
- College of Chemical Engineering
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Ping Li
- Co-Innovation Center for Efficient Processing and Utilization of Forest Products
- College of Chemical Engineering
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Zhiqiang Zhou
- Co-Innovation Center for Efficient Processing and Utilization of Forest Products
- College of Chemical Engineering
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Fan Yang
- Co-Innovation Center for Efficient Processing and Utilization of Forest Products
- College of Chemical Engineering
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Shijie Xu
- Co-Innovation Center for Efficient Processing and Utilization of Forest Products
- College of Chemical Engineering
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Hui Fan
- Co-Innovation Center for Efficient Processing and Utilization of Forest Products
- College of Chemical Engineering
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Xuechun Zhao
- Co-Innovation Center for Efficient Processing and Utilization of Forest Products
- College of Chemical Engineering
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Xiaoxiang Zhang
- Co-Innovation Center for Efficient Processing and Utilization of Forest Products
- College of Chemical Engineering
- Nanjing Forestry University
- Nanjing 210037
- China
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21
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He H, Xu N, Zhang H, Chen B, Hu Z, Guo K, Chun J, Cao S, Zhu Y. Brønsted acid-promoted hydroamination of unsaturated hydrazones: access to biologically important 5-arylpyrazolines. RSC Adv 2021; 11:17340-17345. [PMID: 35479684 PMCID: PMC9033072 DOI: 10.1039/d1ra03043d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 04/29/2021] [Indexed: 12/25/2022] Open
Abstract
A novel and efficient Brønsted acid-promoted hydroamination of hydrazone-tethered olefins has been developed. A variety of pyrazolines have been easily obtained in good to excellent yields with high chemo- and regioselectivity under simple and mild conditions. This method represents a straightforward, facile, and practical approach toward biologically important 5-arylpyrazolines, which are difficult to access by previously reported radical hydroamination of β,γ-unsaturated hydrazones. An efficient, chemo- and regioselective Brønsted acid-promoted hydroamination reaction of hydrazone-tethered olefins towards 5-arylpyrazolines was developed.![]()
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Affiliation(s)
- Han He
- Jiangsu Key Laboratory of Pesticide Science
- Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
| | - Ning Xu
- Jiangsu Key Laboratory of Pesticide Science
- Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
| | - Honglin Zhang
- Jiangsu Key Laboratory of Pesticide Science
- Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
| | - Bin Chen
- Jiangsu Key Laboratory of Pesticide Science
- Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
| | - Zhengnan Hu
- Jiangsu Key Laboratory of Pesticide Science
- Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
| | - Kang Guo
- Jiangsu Key Laboratory of Pesticide Science
- Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
| | - Jianlin Chun
- Jiangsu Key Laboratory of Pesticide Science
- Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
| | - Shujun Cao
- Jiangsu Key Laboratory of Pesticide Science
- Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
| | - Yingguang Zhu
- Jiangsu Key Laboratory of Pesticide Science
- Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
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22
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Chen X, Xiao F, He WM. Recent developments in the difunctionalization of alkenes with C–N bond formation. Org Chem Front 2021. [DOI: 10.1039/d1qo00375e] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Various alkene difunctionalization reactions involving nitridization, diamination, azidation, oxyamination, carboamination, aminohalogenation, and nitration are introduced in this review.
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Affiliation(s)
- Xiang Chen
- School of Chemistry and Chemical Engineering, University of South China, Hengyang, 421001, China
| | - Fang Xiao
- Xiangya School of Public Health, Central South University, Changsha 410078, PR China
| | - Wei-Min He
- School of Chemistry and Chemical Engineering, University of South China, Hengyang, 421001, China
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23
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Wang D, Gao Y, Tong Y, Xiong M, Liang X, Zhu H, Pan Y. Unsymmetrical Disulfides Synthesis
via
Cs
2
CO
3
‐Catalyzed Three‐Component Reaction in Water. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000851] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Dungai Wang
- Department of Chemistry Zhejiang University Hangzhou 310027 People's Republic of China
| | - Yuanji Gao
- Department of Chemistry Zhejiang University Hangzhou 310027 People's Republic of China
| | - Yunli Tong
- Zhejiang East Asia Pharmaceutical Co. Ltd Zhejiang People's Republic of China
| | - Mingteng Xiong
- Department of Chemistry Zhejiang University Hangzhou 310027 People's Republic of China
| | - Xiao Liang
- Department of Chemistry Zhejiang University Hangzhou 310027 People's Republic of China
| | - Heping Zhu
- Department of Chemistry Zhejiang University Hangzhou 310027 People's Republic of China
| | - Yuanjiang Pan
- Department of Chemistry Zhejiang University Hangzhou 310027 People's Republic of China
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24
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Wang Q, Tian P, Cao Z, Zhang H, Jiang C. Copper‐Catalyzed Remote Direct Thiocyanation of Alkyl C(
sp
3
)−H Bonds. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000754] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Qian Wang
- Department of Chemistry College of Science China University of Petroleum (East China) Qingdao 266580 People's Republic of China
| | - Peiyuan Tian
- Department of Chemistry College of Science China University of Petroleum (East China) Qingdao 266580 People's Republic of China
| | - Zhong‐Yan Cao
- College of Chemical Engineering Zhejiang University of Technology Chaowang Road 18# Hangzhou 310014 People's Republic of China
| | - Hongwei Zhang
- Department of Chemistry College of Science China University of Petroleum (East China) Qingdao 266580 People's Republic of China
| | - Cuiyu Jiang
- Department of Chemistry College of Science China University of Petroleum (East China) Qingdao 266580 People's Republic of China
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25
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Zhu YS, Xue Y, Liu W, Zhu X, Hao XQ, Song MP. Temperature-Controlled Chalcogenation and Chalcogenocyanation of Imidazopyridines in Water under Transition Metal-Free Conditions. J Org Chem 2020; 85:9106-9116. [DOI: 10.1021/acs.joc.0c01035] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Yu-Shen Zhu
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Yuting Xue
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Wannian Liu
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Xinju Zhu
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Xin-Qi Hao
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Mao-Ping Song
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
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26
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Xiao H, Meng W, Xu XH, Huang Y. Trifluoromethylthiolation and trifluoromethanesulfonylation of β,γ-unsaturated hydrazones. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.151927] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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27
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Meng F, Fang Q, Yuan W, Xu N, Cao S, Chun J, Li J, Zhang H, Zhu Y. Access to cyano-substituted pyrazolines through copper-catalyzed cascade cyanation/cyclization of unactivated olefins. Org Chem Front 2020. [DOI: 10.1039/d0qo00282h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A mild copper-catalyzed cascade cyanation/cyclization of hydrazone-tethered unactivated olefins was developed for the efficient and practical synthesis of cyano-containing pyrazolines.
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Affiliation(s)
- Fei Meng
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
- China
| | - Qin Fang
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
- China
| | - Weidong Yuan
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
- China
| | - Ning Xu
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
- China
| | - Shujun Cao
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
- China
| | - Jianlin Chun
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
- China
| | - Jie Li
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
- China
| | - Honglin Zhang
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
- China
| | - Yingguang Zhu
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
- China
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28
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Zhang YA, Ding Z, Liu P, Guo WS, Wen LR, Li M. Access to SCN-containing thiazolines via electrochemical regioselective thiocyanothiocyclization of N-allylthioamides. Org Chem Front 2020. [DOI: 10.1039/d0qo00300j] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
An electrochemical thiocyclization of N-allylthioamides has been developed for the synthesis of SCN-containing 2-thiazolines and NCS-containing thiazines.
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Affiliation(s)
- Yan-An Zhang
- State Key Laboratory Base of Eco-Chemical Engineering
- College of Chemistry and Molecular Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
- P. R. China
| | - Zhong Ding
- State Key Laboratory Base of Eco-Chemical Engineering
- College of Chemistry and Molecular Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
- P. R. China
| | - Peng Liu
- State Key Laboratory Base of Eco-Chemical Engineering
- College of Chemistry and Molecular Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
- P. R. China
| | - Wei-Si Guo
- State Key Laboratory Base of Eco-Chemical Engineering
- College of Chemistry and Molecular Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
- P. R. China
| | - Li-Rong Wen
- State Key Laboratory Base of Eco-Chemical Engineering
- College of Chemistry and Molecular Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
- P. R. China
| | - Ming Li
- State Key Laboratory Base of Eco-Chemical Engineering
- College of Chemistry and Molecular Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
- P. R. China
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