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Das B, Dahiya A, Patel BK. Isothiocyanates: happy-go-lucky reagents in organic synthesis. Org Biomol Chem 2024; 22:3772-3798. [PMID: 38656266 DOI: 10.1039/d4ob00281d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Owing to their unique structural features, isothiocyanates (ITCs) are a class of highly useful and inimitable reagents as the -NCS group serves both as electrophile and nucleophile in organic synthesis. ITCs share a rich legacy in organic, medicinal, and combinatorial chemistry. Compared to their oxygen equivalents, isocyanates, ITCs are easily available, less unpleasant, and somewhat less harmful to work with (mild conditions) which makes them happy-go-lucky reagents. Functionalized ITCs can finely tune the reactivity of the -NCS group and thus can be exploited in the late-stage functionalization processes. This review's primary aim is to outline ITC chemistry in the construction and derivatization of heterocycles through the lens of sustainability. For ease and brevity, the sections are divided based on reactive centers present in functionalized ITCs and modes of cyclisation. Scrutinizing their probable unexplored directions for future research studies is also addressed.
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Affiliation(s)
- Bubul Das
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India.
- Department of Chemistry, Bagadhar Brahma Kishan College, Jalah, Assam 781327, India
| | - Anjali Dahiya
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India.
| | - Bhisma K Patel
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India.
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2
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A Visible-Light-Triggered & Rhodamine-B Catalyzed Eco-friendly Synthesis of Benzopyrano[2,3-c]pyrazoles. Catal Letters 2023. [DOI: 10.1007/s10562-023-04279-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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3
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Li JZ, Mei L, Yu XC, Wang LT, Cai XE, Li T, Wei WT. C-centered radical-initiated cyclization by directed C(sp 3)–H oxidative functionalization. Org Chem Front 2022. [DOI: 10.1039/d2qo01128j] [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
C(sp3)–H functionalization is attracting constant attention. This review emphasizes C-centered radicals initiated cyclization strategies by directed C(sp3)–H oxidative functionalization since 2012.
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Affiliation(s)
- Jiao-Zhe Li
- Institute of Drug Discovery Technology, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China
| | - Lan Mei
- Institute of Drug Discovery Technology, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China
| | - Xuan-Chi Yu
- Institute of Drug Discovery Technology, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China
| | - Ling-Tao Wang
- Institute of Drug Discovery Technology, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China
| | - Xue-Er Cai
- Institute of Drug Discovery Technology, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China
| | - Ting Li
- College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang, Henan, 473061, China
| | - Wen-Ting Wei
- Institute of Drug Discovery Technology, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China
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4
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Shen J, Li S, Yao Z, Lin S, Cui X. Base-promoted Cyclization Reaction of o-Isothiocyanato Arylacetylenes and Aroylacetonitriles: Easy Access to Benzo[d][1,3]thiazines. Org Biomol Chem 2022; 20:7236-7240. [DOI: 10.1039/d2ob01424f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A green and efficient synthesis of benzo[d][1,3]thiazines through base-promoted cyclization reaction of o-isothiocyanato arylacetylenes with aroylacetonitriles has been developed. This protocol displays high step economy and efficiency, and tolerates various...
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5
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Yi R, Li J, Wang D, Wei W. Radical Cascade Cyclization Involving C(sp 3)—H Functionalization of Unactivated Cycloalkanes. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202208001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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6
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Weigel WK, Dang HT, Feceu A, Martin DBC. Direct radical functionalization methods to access substituted adamantanes and diamondoids. Org Biomol Chem 2021; 20:10-36. [PMID: 34651636 DOI: 10.1039/d1ob01916c] [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
Adamantane derivatives have diverse applications in the fields of medicinal chemistry, catalyst development and nanomaterials, owing to their unique structural, biological and stimulus-responsive properties, among others. The synthesis of substituted adamantanes and substituted higher diamondoids is frequently achieved via carbocation or radical intermediates that have unique stability and reactivity when compared to simple hydrocarbon derivatives. In this review, we discuss the wide range of radical-based functionalization reactions that directly convert diamondoid C-H bonds to C-C bonds, providing a variety of products incorporating diverse functional groups (alkenes, alkynes, arenes, carbonyl groups, etc.). Recent advances in the area of selective C-H functionalization are highlighted with an emphasis on the H-atom abstracting species and their ability to activate the particularly strong C-H bonds that are characteristic of these caged hydrocarbons, providing insights that can be applied to the C-H functionalization of other substrate classes.
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Affiliation(s)
- William K Weigel
- Chemistry, University of Iowa, Iow City, Iowa, USA.,University of California Riverside, Riverside, California, USA.
| | - Hoang T Dang
- Chemistry, University of Iowa, Iow City, Iowa, USA
| | - Abigail Feceu
- University of California Riverside, Riverside, California, USA.
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7
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Chen S, Bai R, Li M, Liu P, Gu Y. Acid‐Acid‐Catalyzed Tandem Reactions Driven by an Additive‐Like Component. CHEM REC 2020. [DOI: 10.1002/tcr.202000097] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Shaomin Chen
- Key Laboratory for Large-Format Battery Materials and System Ministry of Education School of Chemistry and Chemical Engineering Huazhong University of Science and Technology Wuhan 430074 P.R. China
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan School of Chemistry and Chemical Engineering Shihezi University Shihezi 832004 P.R. China
| | - Rongxian Bai
- Key Laboratory for Large-Format Battery Materials and System Ministry of Education School of Chemistry and Chemical Engineering Huazhong University of Science and Technology Wuhan 430074 P.R. China
| | - Minghao Li
- Key Laboratory for Large-Format Battery Materials and System Ministry of Education School of Chemistry and Chemical Engineering Huazhong University of Science and Technology Wuhan 430074 P.R. China
| | - Ping Liu
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan School of Chemistry and Chemical Engineering Shihezi University Shihezi 832004 P.R. China
| | - Yanlong Gu
- Key Laboratory for Large-Format Battery Materials and System Ministry of Education School of Chemistry and Chemical Engineering Huazhong University of Science and Technology Wuhan 430074 P.R. China
- State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical Physics Lanzhou 730000 P.R. China
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Sharma AK, Jaiswal A, Mishra A, Tiwari J, Jaiswal D, Singh S, Singh J, Singh J. Visible-light-induced radical cascade cyclization of pyrazoles bearing a coumarin unit. NEW J CHEM 2020. [DOI: 10.1039/d0nj02714f] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A visible light facilitated protocol for the synthesis of pyrazoles and their derivatives bearing a coumarin unit in the presence of Eosin Y.
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Affiliation(s)
- Amit Kumar Sharma
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | - Anjali Jaiswal
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | - Anu Mishra
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | - Jyoti Tiwari
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | - Deepali Jaiswal
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | - Shailesh Singh
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | - Jaya Singh
- Department of Chemistry
- LRPG College
- Ghaziabad-201005
- India
| | - Jagdamba Singh
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
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Khusnutdinov RI, Shchadneva NA. Metal complex catalysis in the chemistry of lower diamondoids. RUSSIAN CHEMICAL REVIEWS 2019. [DOI: 10.1070/rcr4881] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The review presents the first survey of published data on the use of compounds, complexes and nanoparticles of transition metals (Fe, Co, Ni, Mn, V, Mo, Cu, Pd, Pt, Rh, Ru, Os, Au, Re and Th) in the catalytic transformations of lower diamondoids — adamantane, diamantane and their derivatives. Catalytic halogenation, oxidation, alkylation and cross-coupling reactions are considered, and the formation pathways of C–N, C–S and C–Se bonds in the series of adamantanoids are discussed. Reaction conditions, appropriate catalytic systems and the structures of products are presented.
The bibliography includes 242 references.
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Liang D, Huo B, Dong Y, Wang Y, Dong Y, Wang B, Ma Y. Copper-Catalyzed Alkylarylation of Unactivated Alkenes: Synthesis of 3-Alkyl Indolines from N-Allyl Anilines and Alkanes. Chem Asian J 2019; 14:1932-1936. [PMID: 31046195 DOI: 10.1002/asia.201900176] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Revised: 03/26/2019] [Indexed: 01/14/2023]
Abstract
A rare example of C(sp3 )-H functionalization of simple alkanes with unactivated alkenes is presented. In the presence of a copper salt and di-tert-butyl peroxide (DTBP), N-allyl anilines underwent exo-selective alkylation/cyclization cascade with unactivated alkenic bonds as radical acceptors and simple alkanes as radical precursors, providing a direct access to 3-alkyl indolines. The present protocol features simple operation, broad substrate scope and great exo selectivity.
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Affiliation(s)
- Deqiang Liang
- Department of Chemistry, Kunming University, 2 Puxin Road, Kunming, Yunnan Province, 650214, China
| | - Bojie Huo
- Department of Chemistry, Kunming University, 2 Puxin Road, Kunming, Yunnan Province, 650214, China
| | - Yongrui Dong
- Department of Chemistry, Kunming University, 2 Puxin Road, Kunming, Yunnan Province, 650214, China
| | - Yan Wang
- Department of Chemistry, Kunming University, 2 Puxin Road, Kunming, Yunnan Province, 650214, China
| | - Ying Dong
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, Shandong Province, 250014, China
| | - Baoling Wang
- Yunnan Engineering Technology Research Center for Plastic Films, Kunming, Yunnan Province, 650214, China
| | - Yinhai Ma
- Department of Chemistry, Kunming University, 2 Puxin Road, Kunming, Yunnan Province, 650214, China
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11
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Affiliation(s)
- Fengtian Wu
- Jiangxi Province Key Laboratory of Polymer Micro/Nano Manufacturing and DevicesEast China University of Technology Guanglan Road Nanchang 330013 P. R. China
| | - Mingyang Ma
- Jiangxi Province Key Laboratory of Polymer Micro/Nano Manufacturing and DevicesEast China University of Technology Guanglan Road Nanchang 330013 P. R. China
| | - Jianwei Xie
- College of Chemistry and BioengineeringHunan University of Science and Engineering Yangzitang Road Yongzhou 425100 P. R. China
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12
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Weragoda GK, Pilkington RL, Polyzos A, O'Hair RAJ. Regioselectivity of aryl radical attack onto isocyanates and isothiocyanates. Org Biomol Chem 2018; 16:9011-9020. [PMID: 30427050 DOI: 10.1039/c8ob02209g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The combination of multistage mass spectrometry experiments employing the distonic radical approach together with DFT calculations are used to examine addition of the N-methyl-pyridinium-4-yl radical cation (γ-NMP) to iso(thio)cyanates in the gas-phase. The type of products formed depend on the nature of the iso(thio)cyanate: (1) hydrogen atom abstraction occurs for alkyl isocyanates; (2) aryl isocyanates undergo radical-ipso substitution; (3) radical attack occurs at the C[double bond, length as m-dash]C bond of allyl isocyanate; (4) radical attack occurs at the C[double bond, length as m-dash]S bond of isothiocyanates to generate S adducts of γ-NMP and isonitriles. DFT calculations provide insight into the reactivity differences of these heterocumulenes towards the electrophilic C-centered γ-distonic radical cations. Translation of these gas phase results to the solution phase were hampered by dominating radical recombination reactions which appear to be favoured over the radical-iso(thio)cyanate reactions.
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13
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He Y, Li J, Luo S, Huang J, Zhu Q. A metal-free synthesis of 2-aminobenzothiazoles through aminyl radical addition to aryl isothiocyanates. Chem Commun (Camb) 2018; 52:8444-7. [PMID: 27306915 DOI: 10.1039/c6cc04394a] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A convenient synthesis of 2-aminobenzothiazoles, starting from aryl isothiocyanates and formamides under metal-free conditions, is described. Various secondary and tertiary amine- and even α-amino acid-derived formamides can be used as amino sources in this process. Mechanistic studies suggest that the reaction is initiated by decarbonylative aminyl radical formation in the presence of n-Bu4NI and TBHP, followed by aminyl radical addition to isothiocyanates and cyclization via sulfur centred radical intermediates.
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Affiliation(s)
- Yimiao He
- Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou 510530, China.
| | - Jing Li
- Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou 510530, China.
| | - Shuang Luo
- Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou 510530, China.
| | - Jinbo Huang
- Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou 510530, China.
| | - Qiang Zhu
- Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou 510530, China.
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14
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Yadav VK, Srivastava VP, Yadav LDS. Pd-catalysed carbonylative annulation of salicylaldehydes with benzyl chlorides using N-formylsaccharin as a CO surrogate. NEW J CHEM 2018. [DOI: 10.1039/c8nj03173h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A highly efficient synthesis of 3-arylcoumarins by Pd-catalysed carbonylative cyclisation of salicylaldehydes with benzyl chlorides using N-formylsaccharin as a CO source is developed.
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Affiliation(s)
- Vinod K. Yadav
- Green Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | - Vishnu P. Srivastava
- Green Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | - Lal Dhar S. Yadav
- Green Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
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15
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Li WY, Wu CS, Wang Z, Luo Y. Fe-Catalyzed three-component carboazidation of alkenes with alkanes and trimethylsilyl azide. Chem Commun (Camb) 2018; 54:11013-11016. [DOI: 10.1039/c8cc05090b] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Iron out the difference. Carboazidation of alkenes using cycloalkanes, CH2Cl2, CHCl3 and CCl4 as alkylating reagents proceeded smoothly in the presence of TMSN3, DTBP and a catalytic amount of Fe(acac)3 to afford chain extended alkyl azides and γ-azido chloroalkanes in good to high yields.
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Affiliation(s)
- Wei-Yu Li
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province
- College of Chemistry
- Xiangtan University
- Hunan
- P. R. China
| | - Chuan-Shuo Wu
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province
- College of Chemistry
- Xiangtan University
- Hunan
- P. R. China
| | - Zhou Wang
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province
- College of Chemistry
- Xiangtan University
- Hunan
- P. R. China
| | - Yang Luo
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province
- College of Chemistry
- Xiangtan University
- Hunan
- P. R. China
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16
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A Peerless Aproach: Organophotoredox/Cu(I) Catalyzed, Regioselective, Visible Light Facilitated, Click Synthesis of 1,2,3-Triazoles via Azide–Alkyne [3 + 2] Cycloaddition. Catal Letters 2017. [DOI: 10.1007/s10562-017-2156-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Wang J, Sang R, Chong X, Zhao Y, Fan W, Li Z, Zhao J. Copper-catalyzed radical cascade oxyalkylation of olefinic amides with simple alkanes: highly efficient access to benzoxazines. Chem Commun (Camb) 2017; 53:7961-7964. [PMID: 28660972 DOI: 10.1039/c7cc04213b] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A copper-catalyzed C(sp3)-H bond functionalization of simple alkanes with olefinic amides was developed for the efficient synthesis of important benzoxazine derivatives. It involves new C-C and C-O bond formation in one step via a radical cascade process.
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Affiliation(s)
- Jie Wang
- College of Chemistry & Environmental Science, Hebei University, Baoding, Hebei 071002, P. R. China.
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18
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Teng F, Cheng J. Functionalization of Cyclohexane Derivatives via Oxidative Radical Pathway. CHINESE J CHEM 2017. [DOI: 10.1002/cjoc.201600538] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Fan Teng
- School of Petrochemical Engineering, Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, Jiangsu Province Key Laboratory of Fine Petrochemical Engineering; Changzhou University; Changzhou Jiangsu 213164 China
| | - Jiang Cheng
- School of Petrochemical Engineering, Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, Jiangsu Province Key Laboratory of Fine Petrochemical Engineering; Changzhou University; Changzhou Jiangsu 213164 China
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Chu XQ, Xing ZH, Meng H, Xu XP, Ji SJ. Copper-mediated radical alkylarylation of unactivated alkenes with acetonitrile leading to fluorenes and pyrroloindoles. Org Chem Front 2016. [DOI: 10.1039/c5qo00329f] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A Cu-mediated/catalyzed selective oxidative dual C–H bond cleavage of an arene and alkylnitrile or acetone is reported. This method provides an alternative method for designing new pharmaceutical frameworks and photoelectronic devices.
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Affiliation(s)
- Xue-Qiang Chu
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology
- Soochow University
- Suzhou
| | - Zhen-Hua Xing
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology
- Soochow University
- Suzhou
| | - Hua Meng
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology
- Soochow University
- Suzhou
| | - Xiao-Ping Xu
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology
- Soochow University
- Suzhou
| | - Shun-Jun Ji
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology
- Soochow University
- Suzhou
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Xie J, Zhu C. Recent Advances in Non-directed C(sp3)–H Bond Functionalization. SPRINGERBRIEFS IN MOLECULAR SCIENCE 2016. [DOI: 10.1007/978-3-662-49496-7_2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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21
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Metal-free efficient cross coupling of aromatic aldehydes with aryldiazonium tetrafluoroborates using DTBP as a radical initiator. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.05.055] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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22
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Chu XQ, Xu XP, Meng H, Ji SJ. Synthesis of functionalized benzoxazines by copper-catalyzed C(sp3)–H bond functionalization of acetonitrile with olefinic amides. RSC Adv 2015. [DOI: 10.1039/c5ra14729h] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
A Cu-mediated/catalyzed oxycyanomethylation reaction of olefinic amides with acetonitrile was developed for the synthesis of important benzoxazine derivatives.
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Affiliation(s)
- Xue-Qiang Chu
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry, Chemical Engineering and Materials Science
- Collaborative Innovation Center of Suzhou Nano Science and Technology
- Soochow University
- Suzhou
| | - Xiao-Ping Xu
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry, Chemical Engineering and Materials Science
- Collaborative Innovation Center of Suzhou Nano Science and Technology
- Soochow University
- Suzhou
| | - Hua Meng
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry, Chemical Engineering and Materials Science
- Collaborative Innovation Center of Suzhou Nano Science and Technology
- Soochow University
- Suzhou
| | - Shun-Jun Ji
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry, Chemical Engineering and Materials Science
- Collaborative Innovation Center of Suzhou Nano Science and Technology
- Soochow University
- Suzhou
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