1
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La-Ongthong K, Chantarojsiri T, Soorukram D, Leowanawat P, Reutrakul V, Kuhakarn C. Electro-oxidative Methylation of 2-Isocyanobiaryls Using N,N-dimethylformamide (DMF) as Carbon Source: Synthesis of 6-Methylphenanthridines. Chem Asian J 2024; 19:e202400176. [PMID: 38489229 DOI: 10.1002/asia.202400176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Revised: 03/14/2024] [Accepted: 03/14/2024] [Indexed: 03/17/2024]
Abstract
A benign electrochemical method to access 6-methylphenanthridines from 2-isocyanobiaryls using N,N-dimethylformamide (DMF) as a methyl source is reported. The protocol operates at ambient temperature without the need for harmful methylating reagents. Mechanistic studies suggested that DMF delivered a methylene synthon, followed by reduction at the cathode and tautomerization. The method offers environmental benefits by avoiding metal-based reagents and harsh conditions.
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Affiliation(s)
- Kannika La-Ongthong
- Department of Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
- Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
| | - Teera Chantarojsiri
- Department of Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
- Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
| | - Darunee Soorukram
- Department of Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
- Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
| | - Pawaret Leowanawat
- Department of Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
- Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
| | - Vichai Reutrakul
- Department of Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
- Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
| | - Chutima Kuhakarn
- Department of Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
- Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
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2
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Chen YZ, Chen YM, Hu Y, Qu JP, Kang YB. Transalkylation via C-N Bond Cleavage of Amines Catalyzed by Super Organophotoreductant CBZ6. Org Lett 2023; 25:7518-7522. [PMID: 37797085 DOI: 10.1021/acs.orglett.3c02827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/07/2023]
Abstract
The super organoreductant CBZ6-catalyzed tandem transalkylation-cyclization using amines as traceless radical donors and stabilizer is reported. The later-stage breaking of an N-C bond enables the transalkylation with a secondary amine as the leaving moiety. A wide range of tertiary amines were used as alkyl radical donors for the C1-C8 alkyls. This traceless stabilizer also enabled the transalkylation with methyl radical, which is normally not possible because of the instability of methyl radical.
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Affiliation(s)
- Yong-Ze Chen
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Yi-Ming Chen
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Yuan Hu
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Jian-Ping Qu
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Yan-Biao Kang
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
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3
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La-Ongthong K, Chantarojsiri T, Soorukram D, Leowanawat P, Reutrakul V, Kuhakarn C. Electrochemical trifluoromethylation of 2-isocyanobiaryls using CF 3SO 2Na: synthesis of 6-(trifluoromethyl)phenanthridines. Org Biomol Chem 2023; 21:4225-4236. [PMID: 36880879 DOI: 10.1039/d3ob00239j] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Abstract
An efficient trifluoromethylation of 2-isocyanobiaryls was developed through the constant current electrolysis, employing sodium trifluoromethanesulfinate (CF3SO2Na) as the trifluoromethyl source. The method enabled the syntheses of a series of 6-(trifluoromethyl)phenanthridine derivatives in moderate to high yields under metal- and oxidant-free conditions. A gram-scale synthesis highlights the synthetic versatility of the reported protocol.
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Affiliation(s)
- Kannika La-Ongthong
- Department of Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Bangkok 10400, Thailand. .,Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama VI Road, Bangkok 10400, Thailand
| | - Teera Chantarojsiri
- Department of Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Bangkok 10400, Thailand. .,Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama VI Road, Bangkok 10400, Thailand
| | - Darunee Soorukram
- Department of Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Bangkok 10400, Thailand. .,Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama VI Road, Bangkok 10400, Thailand
| | - Pawaret Leowanawat
- Department of Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Bangkok 10400, Thailand. .,Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama VI Road, Bangkok 10400, Thailand
| | - Vichai Reutrakul
- Department of Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Bangkok 10400, Thailand. .,Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama VI Road, Bangkok 10400, Thailand
| | - Chutima Kuhakarn
- Department of Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Bangkok 10400, Thailand. .,Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama VI Road, Bangkok 10400, Thailand
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4
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Pei C, Yang Z, Koenigs RM. Photochemical palladium-catalyzed methylation and alkylation reactions in cascade reactions of isonitriles. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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5
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Tripathy AR, A RR, Kumar A, Yatham VR. Photocatalyzed alkylative cyclization of 2-isocyanobiphenyls with unactivated alkyl iodides. Org Biomol Chem 2022; 20:3136-3144. [PMID: 35343547 DOI: 10.1039/d2ob00314g] [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
We herein report the first photocatalyzed radical cascade cyclization of 2-isocyanobiaryls with unactivated alkyl iodides. This simple protocol operates under mild reaction conditions and affords 6-alkyl phenanthridines in good yields. To elucidate the reaction mechanism, Stern-Volmer quenching studies were carried out and these studies revealed that the photocatalyst is not directly involved in a single electron transfer process with the alkyl iodide.
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Affiliation(s)
- Alisha Rani Tripathy
- School of Chemistry, Indian Institute of Science Education and Research, Thiruvananthapuram (IISER-TVM), 695551, India.
| | - Rizwana Rahmathulla A
- School of Chemistry, Indian Institute of Science Education and Research, Thiruvananthapuram (IISER-TVM), 695551, India.
| | - Amit Kumar
- School of Chemistry, Indian Institute of Science Education and Research, Thiruvananthapuram (IISER-TVM), 695551, India.
| | - Veera Reddy Yatham
- School of Chemistry, Indian Institute of Science Education and Research, Thiruvananthapuram (IISER-TVM), 695551, India.
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6
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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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7
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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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8
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López-Mendoza P, Miranda LD. Photocatalytic xanthate-based radical addition/cyclization reaction sequence toward 2-biphenyl isocyanides: synthesis of 6-alkylated phenanthridines. Org Biomol Chem 2021; 18:3487-3491. [PMID: 32347280 DOI: 10.1039/d0ob00136h] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A photocatalytic xanthate-based radical addition/cyclization reaction cascade toward 2-biphenylisocyanides is described as a practical and modular approach to 6-alkylated phenanthridines. The use of xanthates as radical precursors allowed the synthesis of diversely 6-substituted phenanthridines. Electrophilic radicals derived from nitriles, aromatic and aliphatic ketones, malonates, and amide derivatives, as well as radicals derived from phthalimidomethyl and benzylic derivatives were successfully introduced. The reaction proceeds under mild conditions without a stoichiometric amount of oxidant. Thirty novel phenanthridine scaffolds were synthesized with yields ranging from 24 to 76%.
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Affiliation(s)
- Pedro López-Mendoza
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior S. N., Ciudad Universitaria, Coyoacán, Ciudad de México 04510, Mexico.
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9
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Luo Z, Li R, Zhu T, Liu C, Feng H, Aboagye Nartey K, Liu Q, Xu X. Iron‐Catalyzed Oxidative Decabonylation/Radical Cyclization of Aliphatic Aldehydes with Biphenyl Isocyanides: A New Pathway For the Synthesis of 6‐Alkylphenanthridines. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100112] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Zaigang Luo
- State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines College of Chemical Engineering AnHui University of Science and Technology Huainan 232001 P. R. China
| | - Rui Li
- State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines College of Chemical Engineering AnHui University of Science and Technology Huainan 232001 P. R. China
| | - Tao Zhu
- State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines College of Chemical Engineering AnHui University of Science and Technology Huainan 232001 P. R. China
| | - Chen‐Fu Liu
- School of Pharmaceutical Science Gannan Medical University Ganzhou 341000 P. R. China
| | - Haoran Feng
- State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines College of Chemical Engineering AnHui University of Science and Technology Huainan 232001 P. R. China
| | - Kojo Aboagye Nartey
- State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines College of Chemical Engineering AnHui University of Science and Technology Huainan 232001 P. R. China
| | - Qiannan Liu
- State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines College of Chemical Engineering AnHui University of Science and Technology Huainan 232001 P. R. China
| | - Xuemei Xu
- State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines College of Chemical Engineering AnHui University of Science and Technology Huainan 232001 P. R. China
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10
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Wadekar K, Aswale S, Yatham VR. PPh 3/NaI driven photocatalytic decarboxylative radical cascade alkylarylation reaction of 2-isocyanobiaryls. RSC Adv 2020; 10:16510-16514. [PMID: 35498830 PMCID: PMC9052874 DOI: 10.1039/d0ra03211e] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 04/14/2020] [Indexed: 12/13/2022] Open
Abstract
The first triphenylphosphine/sodium iodide driven photocatalytic decarboxylative cascade cyclization of 2-isocyano-biaryls with alkyl N-hydroxyphthalimide (NHP) esters was developed. This operationally simple protocol results in multiple carbon-carbon bond formation under transition metal free conditions, affording a novel and environmentally benign entry to producing 6-alkyl phenanthridines with moderate to good yields.
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Affiliation(s)
- Ketan Wadekar
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology Hyderabad 500007 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
| | - Suraj Aswale
- CSIR-Indian Institute of Chemical Technology Hyderabad 500007 India
| | - Veera Reddy Yatham
- CSIR-Indian Institute of Chemical Technology Hyderabad 500007 India
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram 695551 India
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11
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Collet JW, Morel B, Lin HC, Roose TR, Mampuys P, Orru RVA, Ruijter E, Maes BUW. Synthesis of Densely Functionalized Pyrimidouracils by Nickel(II)-Catalyzed Isocyanide Insertion. Org Lett 2020; 22:914-919. [PMID: 31942797 PMCID: PMC7011176 DOI: 10.1021/acs.orglett.9b04387] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
![]()
A robust nickel-catalyzed oxidative
isocyanide insertion/C–H
amination by reaction of readily available N-uracil-amidines
with isocyanides affording polysubstituted pyrimidouracils has been
reported. The reaction proceeds in moderate to quantitative yield,
under mild conditions (i.e., green solvent, air atmosphere,
moderate temperature). The broad range of structurally diverse isocyanides
and N-uracil-amidines that are tolerated make this
method an interesting alternative to the currently available procedures
toward pyrimidouracils.
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Affiliation(s)
- Jurriën W Collet
- Department of Chemistry and Pharmaceutical Sciences and Amsterdam Institute for Molecules, Medicines & Systems (AIMMS) , Vrije Universiteit Amsterdam , De Boelelaan 1108 , 1081 HZ Amsterdam , The Netherlands.,Organic Synthesis, Department of Chemistry , University of Antwerp , Groenenborgerlaan 171 , 2020 Antwerp , Belgium
| | - Bénédicte Morel
- Organic Synthesis, Department of Chemistry , University of Antwerp , Groenenborgerlaan 171 , 2020 Antwerp , Belgium
| | - Hung-Chien Lin
- Department of Chemistry and Pharmaceutical Sciences and Amsterdam Institute for Molecules, Medicines & Systems (AIMMS) , Vrije Universiteit Amsterdam , De Boelelaan 1108 , 1081 HZ Amsterdam , The Netherlands
| | - Thomas R Roose
- Department of Chemistry and Pharmaceutical Sciences and Amsterdam Institute for Molecules, Medicines & Systems (AIMMS) , Vrije Universiteit Amsterdam , De Boelelaan 1108 , 1081 HZ Amsterdam , The Netherlands
| | - Pieter Mampuys
- Department of Chemistry and Pharmaceutical Sciences and Amsterdam Institute for Molecules, Medicines & Systems (AIMMS) , Vrije Universiteit Amsterdam , De Boelelaan 1108 , 1081 HZ Amsterdam , The Netherlands.,Organic Synthesis, Department of Chemistry , University of Antwerp , Groenenborgerlaan 171 , 2020 Antwerp , Belgium
| | - Romano V A Orru
- Department of Chemistry and Pharmaceutical Sciences and Amsterdam Institute for Molecules, Medicines & Systems (AIMMS) , Vrije Universiteit Amsterdam , De Boelelaan 1108 , 1081 HZ Amsterdam , The Netherlands
| | - Eelco Ruijter
- Department of Chemistry and Pharmaceutical Sciences and Amsterdam Institute for Molecules, Medicines & Systems (AIMMS) , Vrije Universiteit Amsterdam , De Boelelaan 1108 , 1081 HZ Amsterdam , The Netherlands
| | - Bert U W Maes
- Organic Synthesis, Department of Chemistry , University of Antwerp , Groenenborgerlaan 171 , 2020 Antwerp , Belgium
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12
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Cu(0)/Selectfluor system-catalyzed intramolecular Csp2-H/Csp2-H cross-dehydrogenative coupling (CDC). Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.130533] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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13
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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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14
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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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15
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Direct synthesis of 6-sulfonylated phenanthridines via silver-catalyzed radical sulfonylation-cyclization of 2-isocyanobiphenyls. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.07.024] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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16
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Rohe S, McCallum T, Morris AO, Barriault L. Transformations of Isonitriles with Bromoalkanes Using Photoredox Gold Catalysis. J Org Chem 2018; 83:10015-10024. [PMID: 29979602 DOI: 10.1021/acs.joc.8b01380] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Isonitriles have excellent electronic compatibility to react with free radicals. Recently, photoredox catalysis has emerged as a powerful tool for the construction of C-C bonds with few protocols for alkylative heterocycle synthesis through isonitrile addition. Herein, we describe the photocatalytic generation of alkyl radicals from unactivated bromoalkanes as part of an efficient cross-coupling strategy for the diversification of isonitriles using a dimeric gold(I) photoredox catalyst, [Au2(dppm)2]Cl2.
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Affiliation(s)
- Samantha Rohe
- Centre for Catalysis, Research and Innovation Department of Chemistry and Biomolecular Sciences , University of Ottawa , 10 Marie Curie , Ottawa , Ontario K1N 6N5 , Canada
| | - Terry McCallum
- Centre for Catalysis, Research and Innovation Department of Chemistry and Biomolecular Sciences , University of Ottawa , 10 Marie Curie , Ottawa , Ontario K1N 6N5 , Canada
| | - Avery O Morris
- Centre for Catalysis, Research and Innovation Department of Chemistry and Biomolecular Sciences , University of Ottawa , 10 Marie Curie , Ottawa , Ontario K1N 6N5 , Canada
| | - Louis Barriault
- Centre for Catalysis, Research and Innovation Department of Chemistry and Biomolecular Sciences , University of Ottawa , 10 Marie Curie , Ottawa , Ontario K1N 6N5 , Canada
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17
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Ding S, Zhao Y, Ma Q, Tian S, Ren H, Zhu M, Li K, Miao Z. Silver(I)-mediated Reaction of 2-Isocyanobiaryl with Alkyl Trifluoroborates: Efficient Synthesis of 6-Alkylated Phenanthridines. CHEM LETT 2018. [DOI: 10.1246/cl.180009] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Siyi Ding
- Key Laboratory of Organic Polymer Photoelectric Materials, School of Science, Xijing University, Xi’an Shaanxi 710123, P. R. China
| | - Yuzhen Zhao
- Key Laboratory of Organic Polymer Photoelectric Materials, School of Science, Xijing University, Xi’an Shaanxi 710123, P. R. China
| | - Qiang Ma
- Key Laboratory of Organic Polymer Photoelectric Materials, School of Science, Xijing University, Xi’an Shaanxi 710123, P. R. China
| | - Shaopeng Tian
- Key Laboratory of Organic Polymer Photoelectric Materials, School of Science, Xijing University, Xi’an Shaanxi 710123, P. R. China
| | - Huaping Ren
- Key Laboratory of Organic Polymer Photoelectric Materials, School of Science, Xijing University, Xi’an Shaanxi 710123, P. R. China
| | - Min Zhu
- Key Laboratory of Organic Polymer Photoelectric Materials, School of Science, Xijing University, Xi’an Shaanxi 710123, P. R. China
| | - Kexuan Li
- Key Laboratory of Organic Polymer Photoelectric Materials, School of Science, Xijing University, Xi’an Shaanxi 710123, P. R. China
| | - Zongcheng Miao
- Key Laboratory of Organic Polymer Photoelectric Materials, School of Science, Xijing University, Xi’an Shaanxi 710123, P. R. China
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18
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Yao Q, Zhou X, Zhang X, Wang C, Wang P, Li M. Convenient synthesis of 6-alkyl phenanthridines and 1-alkyl isoquinolines via silver-catalyzed oxidative radical decarboxylation. Org Biomol Chem 2018; 15:957-971. [PMID: 28059413 DOI: 10.1039/c6ob02331b] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A convenient and efficient protocol for the synthesis of 6-alkyl phenanthridines and 1-alkyl isoquinolines has been developed. The reaction relies on the coupling of 2-isocyanobiphenyls and vinyl isonitriles with alkyl radicals formed by the silver-catalyzed decarboxylation of stoichiometric aliphatic carboxylic acids, and affords diverse phenanthridine and isoquinoline derivatives under mild reaction conditions. The experiment of β-scission of cyclobutylcarbinyl radicals is used to shed light on the reaction mechanism.
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Affiliation(s)
- Qian Yao
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao, 266003, P.R. China.
| | - Xin Zhou
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao, 266003, P.R. China.
| | - Xiuli Zhang
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao, 266003, P.R. China.
| | - Cong Wang
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao, 266003, P.R. China.
| | - Peng Wang
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao, 266003, P.R. China.
| | - Ming Li
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao, 266003, P.R. China. and Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237, P. R. China
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19
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Abstract
Among organic compounds hydrocarbons are inexpensive and possibly the most abundant among natural resources. Developing strategies for selective functionalisation of inert hydrocarbon C-H bonds is one of the most ideal synthetic paths that a synthetic chemist could think of. This critical review focuses on the recent development of various directed and non-directed cycloalkylations leading to the formation of carbon-carbon (C-C) and carbon-heteroatom (C-X) bonds. Apart from various transition metal catalysed cycloalkylations, this review also covers various metal-free cycloalkylation processes.
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Affiliation(s)
- Arghya Banerjee
- Department of Chemistry, Indian Institute of Technology Guwahati, 781 039, Assam, India.
| | - Satavisha Sarkar
- Department of Chemistry, Indian Institute of Technology Guwahati, 781 039, Assam, India.
| | - Bhisma K Patel
- Department of Chemistry, Indian Institute of Technology Guwahati, 781 039, Assam, India.
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20
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Liu X, Wu C, Zhang J, Shi Y, Zhang S, Geng Y, Tung CH, Wang W. Cobalt-catalyzed radical cyclization of isocyanides forming phenanthridine derivatives. Org Chem Front 2018. [DOI: 10.1039/c8qo00887f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A neutral cobalt(ii) compound catalyzes the radical cyclization of 2-isocyano-biphenyls with various alkyl halides, providing a series of phenanthridine-fused polycycles.
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Affiliation(s)
- Xiangyu Liu
- Key Lab of Colloid and Interface Chemistry
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan
| | - Chengjuan Wu
- Key Lab of Colloid and Interface Chemistry
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan
| | - Jing Zhang
- Key Lab of Colloid and Interface Chemistry
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan
| | - Yihan Shi
- Key Lab of Colloid and Interface Chemistry
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan
| | - Shengnan Zhang
- Key Lab of Colloid and Interface Chemistry
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan
| | - Yan Geng
- College of Chemistry
- Chemical Engineering and Materials Science
- Shandong Normal University
- Jinan 250014
- P. R. China
| | - Chen-Ho Tung
- Key Lab of Colloid and Interface Chemistry
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan
| | - Wenguang Wang
- Key Lab of Colloid and Interface Chemistry
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan
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21
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Wang L, Xiong W, Peng Y, Ding Q. Iron-catalyzed cascade addition/cyclization of 2-biphenyl isocyanides with toluenes: a highly efficient approach to 6-benzylated phenanthridines. Org Biomol Chem 2018; 16:8837-8844. [DOI: 10.1039/c8ob02462f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A highly efficient Fe-catalyzed cascade addition/cyclization of 2-biphenyl isocyanides with toluenes for the synthesis of 6-benzylated phenanthridines has been reported.
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Affiliation(s)
- Liping Wang
- Key Laboratory of Small Functional Organic Molecule
- Ministry of Education and Jiangxi's Key Laboratory of Green Chemistry
- Jiangxi Normal University
- Nanchang
- P.R. China
| | - Weikang Xiong
- Key Laboratory of Small Functional Organic Molecule
- Ministry of Education and Jiangxi's Key Laboratory of Green Chemistry
- Jiangxi Normal University
- Nanchang
- P.R. China
| | - Yiyuan Peng
- Key Laboratory of Small Functional Organic Molecule
- Ministry of Education and Jiangxi's Key Laboratory of Green Chemistry
- Jiangxi Normal University
- Nanchang
- P.R. China
| | - Qiuping Ding
- Key Laboratory of Small Functional Organic Molecule
- Ministry of Education and Jiangxi's Key Laboratory of Green Chemistry
- Jiangxi Normal University
- Nanchang
- P.R. China
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22
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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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23
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Chen M, Li Y, Tang H, Ding H, Wang K, Yang L, Li C, Gao M, Lei A. Bu4NI-Catalyzed Oxygen-Centered Radical Addition between Acyl Peroxides and Isocyanides. Org Lett 2017; 19:3147-3150. [DOI: 10.1021/acs.orglett.7b01272] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Meng Chen
- National
Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, Jiangxi 330022, P. R. China
| | - Yang Li
- National
Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, Jiangxi 330022, P. R. China
| | - Hong Tang
- National
Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, Jiangxi 330022, P. R. China
| | - Hao Ding
- National
Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, Jiangxi 330022, P. R. China
| | - Kai Wang
- National
Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, Jiangxi 330022, P. R. China
| | - Lingen Yang
- National
Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, Jiangxi 330022, P. R. China
| | - Cuiting Li
- National
Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, Jiangxi 330022, P. R. China
| | - Meng Gao
- National
Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, Jiangxi 330022, P. R. China
| | - Aiwen Lei
- National
Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, Jiangxi 330022, P. R. China
- College
of Chemistry and Molecular Sciences, the Institute for Advanced Studies
(IAS), Wuhan University, Wuhan, Hubei 430072, P. R. China
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24
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Li D, Mao T, Huang J, Zhu Q. Denitrogenative Imidoyl Radical Cyclization: Synthesis of 2-Substituted Benzoimidazoles from 1-Azido-2-isocyanoarenes. Org Lett 2017; 19:3223-3226. [DOI: 10.1021/acs.orglett.7b01339] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Dengke Li
- State Key Laboratory of Respiratory
Disease, Guangzhou Institutes of Biomedicine and Health, University
of Chinese Academy of Sciences, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou 510530, China
| | - Tingting Mao
- State Key Laboratory of Respiratory
Disease, Guangzhou Institutes of Biomedicine and Health, University
of Chinese Academy of Sciences, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou 510530, China
| | - Jinbo Huang
- State Key Laboratory of Respiratory
Disease, Guangzhou Institutes of Biomedicine and Health, University
of Chinese Academy of Sciences, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou 510530, China
| | - Qiang Zhu
- State Key Laboratory of Respiratory
Disease, Guangzhou Institutes of Biomedicine and Health, University
of Chinese Academy of Sciences, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou 510530, China
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25
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Song W, Yan P, Shen D, Chen Z, Zeng X, Zhong G. Synthesis of Cyano-Containing Phenanthridine Derivatives via Catalyst-, Base-, and Oxidant-Free Direct Cyanoalkylarylation of Isocyanides. J Org Chem 2017; 82:4444-4448. [DOI: 10.1021/acs.joc.7b00343] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Weihong Song
- College of Materials,
Chemistry
and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
| | - Peipei Yan
- College of Materials,
Chemistry
and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
| | - Dan Shen
- College of Materials,
Chemistry
and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
| | - Zhangtao Chen
- College of Materials,
Chemistry
and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
| | - Xiaofei Zeng
- College of Materials,
Chemistry
and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
| | - Guofu Zhong
- College of Materials,
Chemistry
and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
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26
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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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27
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Abstract
This review demonstrates the metal-catalyzed incorporation of isocyanides into C–H functionalization to establish complicated reactions utilizing synergistic effects.
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Affiliation(s)
- Bingrui Song
- Department of Chemistry
- Innovative Drug Research Center
- Shanghai University
- Shanghai 200444
- China
| | - Bin Xu
- Department of Chemistry
- Innovative Drug Research Center
- Shanghai University
- Shanghai 200444
- China
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28
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29
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Nie Z, Ding Q, Peng Y. Synthesis of 6-aroyl phenanthridines by Fe-catalyzed oxidative radical cyclization of 2-isocyanobiphenyls with benzylic alcohols. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.11.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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30
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Xu Y, Chen Y, Li W, Xie Q, Shao L. Microwave-Assisted Synthesis of Phenanthridines by Radical Insertion/Cyclization of Biphenyl Isocyanides. J Org Chem 2016; 81:8426-35. [DOI: 10.1021/acs.joc.6b01589] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yulong Xu
- School
of Pharmacy, Fudan University, 826 Zhangheng Road, Zhangjiang Hi-tech
Park, Pudong, Shanghai 201203, China
| | - Yiyi Chen
- School
of Pharmacy, Fudan University, 826 Zhangheng Road, Zhangjiang Hi-tech
Park, Pudong, Shanghai 201203, China
| | - Wei Li
- School
of Pharmacy, Fudan University, 826 Zhangheng Road, Zhangjiang Hi-tech
Park, Pudong, Shanghai 201203, China
| | - Qiong Xie
- School
of Pharmacy, Fudan University, 826 Zhangheng Road, Zhangjiang Hi-tech
Park, Pudong, Shanghai 201203, China
| | - Liming Shao
- School
of Pharmacy, Fudan University, 826 Zhangheng Road, Zhangjiang Hi-tech
Park, Pudong, Shanghai 201203, China
- Shanghai Center for Drug Discovery & Development, 826 Zhangheng Road, Zhangjiang Hi-tech Park, Pudong, Shanghai 201203, China
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31
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Cai XH, Jin J, Xie B. Recent advance in direct sp3 carbon-hydrogen bond functionalizations. ACTA ACUST UNITED AC 2016. [DOI: 10.5155/eurjchem.7.2.248-270.1412] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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32
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Lei J, Huang J, Zhu Q. Recent progress in imidoyl radical-involved reactions. Org Biomol Chem 2016; 14:2593-602. [DOI: 10.1039/c6ob00087h] [Citation(s) in RCA: 84] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
This review discusses the recent progress in imidoyl radical-involved reactions including the synthesis of functionalized heterocycles, nitriles, imines, amines,etc.
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Affiliation(s)
- Jian Lei
- Guangzhou Institutes of Biomedicine and Health
- Chinese Academy of Sciences
- Guangzhou 510530
- China
| | - Jinbo Huang
- Guangzhou Institutes of Biomedicine and Health
- Chinese Academy of Sciences
- Guangzhou 510530
- China
| | - Qiang Zhu
- Guangzhou Institutes of Biomedicine and Health
- Chinese Academy of Sciences
- Guangzhou 510530
- China
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33
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Qi X, Xiang H, Yang C. Synthesis of Functionalized Chromeno[2,3-b]pyrrol-4(1H)-ones by Silver-Catalyzed Cascade Reactions of Chromones/Thiochromones and Isocyanoacetates. Org Lett 2015; 17:5590-3. [PMID: 26562216 DOI: 10.1021/acs.orglett.5b02795] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A novel and convenient approach to the synthesis of chromeno[2,3-b]pyrrol-4(1H)-ones has been developed. Furthermore, the method involves a facile silver-catalyzed cascade cyclization reaction including an intramolecular C-O bond formation. The silver salt acts as a key promoter.
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Affiliation(s)
- Xueyu Qi
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , 555 Zuchongzhi Road, Shanghai, 201203, China
| | - Haoyue Xiang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , 555 Zuchongzhi Road, Shanghai, 201203, China
| | - Chunhao Yang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , 555 Zuchongzhi Road, Shanghai, 201203, China
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34
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Wang S, Jia WL, Wang L, Liu Q. Preparation of 6-Difluoromethylphosphonated Phenanthridines by Visible-Light-Driven Radical Cyclization of 2-Isocyanobiphenyls. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500988] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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35
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Lu S, Gong Y, Zhou D. Transition Metal-Free Oxidative Radical Decarboxylation/Cyclization for the Construction of 6-Alkyl/Aryl Phenanthridines. J Org Chem 2015; 80:9336-41. [DOI: 10.1021/acs.joc.5b01518] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Shichao Lu
- State
Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical
Sciences, Peking University, 38 Xueyuan Road, Beijing 100191, People’s Republic of China
- National Institute of Biological Sciences (NIBS), 7 Science Park Road, ZGC life science park, Beijing 102206, People’s Republic of China
- Institute
of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, 2 Nanwei Road, Xicheng District, Beijing 100050, People’s Republic of China
| | - Yaling Gong
- Institute
of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, 2 Nanwei Road, Xicheng District, Beijing 100050, People’s Republic of China
| | - Demin Zhou
- State
Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical
Sciences, Peking University, 38 Xueyuan Road, Beijing 100191, People’s Republic of China
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36
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Chikkade PK, Kuninobu Y, Kanai M. Copper-catalyzed intermolecular C(sp 3)-H bond functionalization towards the synthesis of tertiary carbamates. Chem Sci 2015; 6:3195-3200. [PMID: 29142689 PMCID: PMC5657409 DOI: 10.1039/c5sc00238a] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Accepted: 03/20/2015] [Indexed: 11/23/2022] Open
Abstract
We describe the development of an intermolecular unactivated C(sp3)-H bond functionalization towards the direct synthesis of tertiary carbamates. The transformation proceeded using a readily available, abundant first-row transition metal catalyst (copper), and isocyanates as the source of the amide moiety. This is a novel strategy for direct transformation of a variety of unactivated hydrocarbon feedstocks to N-alkyl-N-aryl and N,N-dialkyl carbamates without pre-functionalization or installation of a directing group. The reaction had a broad substrate scope with 3° > 2° > 1° site selectivity. The reaction proceeded even on a gram scale, and a corresponding free amine was directly obtained when the reaction was performed at high temperature. Kinetic studies suggested that radical-mediated C(sp3)-H bond cleavage was the rate-determining step.
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Affiliation(s)
- Prasanna Kumara Chikkade
- Graduate School of Pharmaceutical Sciences , The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku , Tokyo 113-0033 , Japan . ;
| | - Yoichiro Kuninobu
- Graduate School of Pharmaceutical Sciences , The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku , Tokyo 113-0033 , Japan . ;
- ERATO (Japan) Science and Technology Agency (JST) , Kanai Life Science Catalysis Project , 7-3-1 Hongo, Bunkyo-ku , Tokyo 113-0033 , Japan
| | - Motomu Kanai
- Graduate School of Pharmaceutical Sciences , The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku , Tokyo 113-0033 , Japan . ;
- ERATO (Japan) Science and Technology Agency (JST) , Kanai Life Science Catalysis Project , 7-3-1 Hongo, Bunkyo-ku , Tokyo 113-0033 , Japan
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37
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Li J, He Y, Luo S, Lei J, Wang J, Xie Z, Zhu Q. Palladium-catalyzed intramolecular C(sp(2))-H imidoylation for the synthesis of six-membered N-heterocycles. J Org Chem 2015; 80:2223-30. [PMID: 25611368 DOI: 10.1021/jo502731n] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A new strategy for the construction of phenanthridine and isoquinoline scaffolds, starting from arenes containing a pending isocyanide moiety under palladium catalysis, has been developed. This process involves sequential intermolecular isocyanide insertion to an aryl palladium(II) intermediate and intramolecular aromatic C-H activation as key steps. Alkyl palladium(II) intermediate lacking β-hydrogen is also applicable to this reaction, generating unique bisheterocyclic scaffolds with three C-C bonds being formed consecutively.
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Affiliation(s)
- Jing Li
- Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences , 190 Kaiyuan Avenue, Guangzhou 510530, China
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38
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Pan C, Zhang H, Han J, Cheng Y, Zhu C. Metal-free radical oxidative decarboxylation/cyclization of acyl peroxides and 2-isocyanobiphenyls. Chem Commun (Camb) 2015; 51:3786-8. [DOI: 10.1039/c4cc10015h] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A radical oxidative decarboxylation/cyclization of acyl peroxides and 2-isocyanobiphenyls was achieved, leading to 6-substituted phenanthridines under metal-free and base-free conditions.
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Affiliation(s)
- Changduo Pan
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
- PR China
| | - Honglin Zhang
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
- PR China
| | - Jie Han
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
- PR China
| | - Yixiang Cheng
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
- PR China
| | - Chengjian Zhu
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
- PR China
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39
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Hartmann M, Daniliuc CG, Studer A. Preparation of phenanthrenes from ortho-amino-biphenyls and alkynes via base-promoted homolytic aromatic substitution. Chem Commun (Camb) 2015; 51:3121-3. [DOI: 10.1039/c4cc10063h] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Phenanthrenes are prepared from ortho-aminobiphenyls and acetylenes via base-promoted homolytic aromatic substitution.
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Affiliation(s)
- Marcel Hartmann
- Organisch-Chemisches Institut
- Westfälische Wilhelms-Universität
- 48149 Münster
- Germany
| | | | - Armido Studer
- Organisch-Chemisches Institut
- Westfälische Wilhelms-Universität
- 48149 Münster
- Germany
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40
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Tang X, Song S, Liu C, Zhu R, Zhang B. Light triggered addition/annulation of 2-isocyanobiphenyls toward 6-trifluoromethyl-phenanthridines under photocatalyst-free conditions. RSC Adv 2015. [DOI: 10.1039/c5ra16645d] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
A photocatalyst-free, light promoted sequential radical addition/annulation of 2-isocyanobiphenyls to 6-trifluoromethyl phenanthridines with high efficiency is presented.
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Affiliation(s)
- Xiangyang Tang
- Department of Chemistry
- School of Science
- Tianjin University
- Tianjin 300072
- China
| | - Shuang Song
- Department of Chemistry
- School of Science
- Tianjin University
- Tianjin 300072
- China
| | - Cuibo Liu
- Department of Chemistry
- School of Science
- Tianjin University
- Tianjin 300072
- China
| | - Rongjiao Zhu
- Department of Chemistry
- School of Science
- Tianjin University
- Tianjin 300072
- China
| | - Bin Zhang
- Department of Chemistry
- School of Science
- Tianjin University
- Tianjin 300072
- China
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41
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Zhang B, Studer A. Recent advances in the synthesis of nitrogen heterocycles via radical cascade reactions using isonitriles as radical acceptors. Chem Soc Rev 2015; 44:3505-21. [DOI: 10.1039/c5cs00083a] [Citation(s) in RCA: 516] [Impact Index Per Article: 57.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Radical isonitrile insertion reactions are highly valuable for the construction of N-containing heterocycles such as phenanthridines, quinolines, isoquinolines, quinoxalines and indoles.
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Affiliation(s)
- Bo Zhang
- State Key Laboratory of Natural Medicines
- China Pharmaceutical University
- 210009 Nanjing
- China
| | - Armido Studer
- Institute of Organic Chemistry
- Westfälische Wilhems-University
- 48149 Münster
- Germany
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42
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Yadav AK, Yadav LDS. Direct construction of 2-alkylbenzo-1,3-azoles via C–H activation of alkanes for C–C and C–X (X = O, S) bond formation. Org Biomol Chem 2015; 13:2606-11. [DOI: 10.1039/c4ob02488e] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
2-Alkylated benzo(oxa)thiazoles were prepared directly from simple alkanes and aryl isocyanates/isothiocyanates in a one-pot procedure.
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Affiliation(s)
- Arvind K. Yadav
- 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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43
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Zhu TH, Wei TQ, Wang SY, Ji SJ. NIS/CHP-mediated reaction of isocyanides with hydrazones: access to aminopyrazoles. Org Chem Front 2015. [DOI: 10.1039/c4qo00289j] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A NIS/CHP-mediated reaction of isocyanides with hydrazones to construct aminopyrazoles has been developed.
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Affiliation(s)
- Tong-Hao Zhu
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
| | - Tian-Qi Wei
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
| | - Shun-Yi Wang
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
| | - Shun-Jun Ji
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
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44
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Ghosh M, Ahmed A, Singha R, Ray JK. Domino Suzuki coupling and condensation reaction: an efficient strategy towards synthesis of phenanthridines. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2014.11.092] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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45
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Guo XX, Gu DW, Wu Z, Zhang W. Copper-Catalyzed C–H Functionalization Reactions: Efficient Synthesis of Heterocycles. Chem Rev 2014; 115:1622-51. [DOI: 10.1021/cr500410y] [Citation(s) in RCA: 748] [Impact Index Per Article: 74.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Xun-Xiang Guo
- Shanghai
Center for Systems Biomedicine, Ministry of Education Key Laboratory
of Systems Biomedicine, Shanghai Jiao Tong University, 800 Dongchuan
Road, Shanghai 200240, China
| | - Da-Wei Gu
- Shanghai
Center for Systems Biomedicine, Ministry of Education Key Laboratory
of Systems Biomedicine, Shanghai Jiao Tong University, 800 Dongchuan
Road, Shanghai 200240, China
| | - Zhengxing Wu
- School
of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Wanbin Zhang
- School
of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
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46
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Tu HY, Liu YR, Chu JJ, Hu BL, Zhang XG. FeCl3-Promoted Carboxamidation and Cyclization of Aryl Isonitriles with Formamides toward Phenanthridine-6-carboxamides. J Org Chem 2014; 79:9907-12. [DOI: 10.1021/jo502022c] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Hai-Yong Tu
- College
of Chemistry and
Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Yu-Rong Liu
- College
of Chemistry and
Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Jing-Jing Chu
- College
of Chemistry and
Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Bo-Lun Hu
- College
of Chemistry and
Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Xing-Guo Zhang
- College
of Chemistry and
Materials Engineering, Wenzhou University, Wenzhou 325035, China
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47
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Feng X, Zhu H, Wang L, Jiang Y, Cheng J, Yu JT. TBHP-promoted sequential carboxamidation and aromatisation of aryl isonitriles with formamides. Org Biomol Chem 2014; 12:9257-63. [DOI: 10.1039/c4ob01850h] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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48
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Wang L, Zhu H, Guo S, Cheng J, Yu JT. TBHP-promoted sequential radical silylation and aromatisation of aryl isonitriles with silanes. Chem Commun (Camb) 2014; 50:10864-7. [DOI: 10.1039/c4cc04773g] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
TBHP-promoted sequential silylation and aromatisation of isonitriles was developed, where the silyl group was regioselectively installed at the 6-position of phenanthridines. The addition of a silyl radical to the isonitrile followed by an intramolecular aromatic cyclization was involved in this transformation.
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Affiliation(s)
- Lei Wang
- School of Petrochemical Engineering
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology
- Jiangsu Province Key Laboratory of Fine Petrochemical Engineering
- Changzhou University
- Changzhou 213164, P. R. China
| | - Hui Zhu
- School of Petrochemical Engineering
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology
- Jiangsu Province Key Laboratory of Fine Petrochemical Engineering
- Changzhou University
- Changzhou 213164, P. R. China
| | - Songjin Guo
- School of Petrochemical Engineering
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology
- Jiangsu Province Key Laboratory of Fine Petrochemical Engineering
- Changzhou University
- Changzhou 213164, P. R. China
| | - Jiang Cheng
- School of Petrochemical Engineering
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology
- Jiangsu Province Key Laboratory of Fine Petrochemical Engineering
- Changzhou University
- Changzhou 213164, P. R. China
| | - Jin-Tao Yu
- School of Petrochemical Engineering
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology
- Jiangsu Province Key Laboratory of Fine Petrochemical Engineering
- Changzhou University
- Changzhou 213164, P. R. China
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