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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Roy S, Panja S, Sahoo SR, Chatterjee S, Maiti D. Enroute sustainability: metal free C-H bond functionalisation. Chem Soc Rev 2023; 52:2391-2479. [PMID: 36924227 DOI: 10.1039/d0cs01466d] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Abstract
The term "C-H functionalisation" incorporates C-H activation followed by its transformation. In a single line, this can be defined as the conversion of carbon-hydrogen bonds into carbon-carbon or carbon-heteroatom bonds. The catalytic functionalisation of C-H bonds using transition metals has emerged as an atom-economical technique to engender new bonds without activated precursors which can be considered as a major drawback while attempting large-scale synthesis. Replacing the transition-metal-catalysed approach with a metal-free strategy significantly offers an alternative route that is not only inexpensive but also environmentally benign to functionalize C-H bonds. Recently metal free synthetic approaches have been flourishing to functionalize C-H bonds, motivated by the search for greener, cost-effective, and non-toxic catalysts. In this review, we will highlight the comprehensive and up-to-date discussion on recent examples of ground-breaking research on green and sustainable metal-free C-H bond functionalisation.
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Affiliation(s)
- Sayan Roy
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
| | - Subir Panja
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
| | - Sumeet Ranjan Sahoo
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
| | - Sagnik Chatterjee
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
| | - Debabrata Maiti
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India. .,Department of Interdisciplinary Program in Climate Studies, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
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4
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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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5
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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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6
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Ma X, Wang Q, Wu J, Zhang L, Sun A, Wang Z. NHC-alcohol adduct-mediated photocatalytic deoxygenation for the synthesis of 6-phenanthridine derivatives. Org Biomol Chem 2022; 20:5393-5396. [PMID: 35748810 DOI: 10.1039/d2ob00814a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
NHC-alcohol adduct-mediated deoxygenation of alcohols under photocatalytic conditions is described. This process provides various alkyl radicals, which can react with 2-isocyanobiaryls to afford 6-substituted phenanthridine derivatives in moderate to good yields. This method offered the first example of directly using alcohols as radical sources for 6-phenanthridine synthesis.
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Affiliation(s)
- Xueji Ma
- School of Pharmacy, Key Laboratory of Nano-carbon Modified Film Technology Engineering of Henan Province, Xinxiang University, Xinxiang 453000, P. R. China.
| | - Qingyun Wang
- School of Pharmacy, Key Laboratory of Nano-carbon Modified Film Technology Engineering of Henan Province, Xinxiang University, Xinxiang 453000, P. R. China.
| | - Jinge Wu
- School of Pharmacy, Key Laboratory of Nano-carbon Modified Film Technology Engineering of Henan Province, Xinxiang University, Xinxiang 453000, P. R. China.
| | - Liyuan Zhang
- School of Pharmacy, Key Laboratory of Nano-carbon Modified Film Technology Engineering of Henan Province, Xinxiang University, Xinxiang 453000, P. R. China.
| | - Aili Sun
- School of Pharmacy, Key Laboratory of Nano-carbon Modified Film Technology Engineering of Henan Province, Xinxiang University, Xinxiang 453000, P. R. China.
| | - Zhanyong Wang
- School of Pharmacy, Key Laboratory of Nano-carbon Modified Film Technology Engineering of Henan Province, Xinxiang University, Xinxiang 453000, P. R. China.
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7
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Shivam, Tiwari G, Kumar M, Chauhan ANS, Erande RD. Recent advances in cascade reactions and their mechanistic insights: a concise strategy to synthesize complex natural products and organic scaffolds. Org Biomol Chem 2022; 20:3653-3674. [PMID: 35416224 DOI: 10.1039/d2ob00452f] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The beauty of cascade reactions to bestow us with cumbersome organic scaffolds has made them a cutting-edge area of research. Although the planning of cascades may require intuition, their results can be highly impactful. The development of cascades to provide specific targeted molecules of an appropriate structural and stereochemical framework poses a significant challenge but can serve as one of the most impressive tools in organic synthesis. This review shares a broad interest in compiling cascade transformations towards the construction of polycyclic frameworks, induction of chirality/asymmetry in the protocol, etc. to solve diverse challenges in organic synthesis pursuits, as cascades enable the rapid and efficient construction of complex architectures from simple molecules. The studies highlighted herein manifest the utilization of a range of cascade reactions under various classifications for generating natural product skeletons such as palau'amine, benzosimuline, arcutinine, and others from simple building blocks, with emphasis on breakthroughs and potential for asymmetric synthesis. The exquisite synthetic designs of recently completed total synthesis of natural products with a focus on strategic concerns are also highlighted in this review.
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Affiliation(s)
- Shivam
- Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur-342037, India.
| | - Geetika Tiwari
- Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur-342037, India.
| | - Manish Kumar
- Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur-342037, India.
| | | | - Rohan D Erande
- Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur-342037, India.
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8
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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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9
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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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10
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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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11
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Liu H, Yu JT, Pan C. Diacyl peroxides: practical reagents as aryl and alkyl radical sources. Chem Commun (Camb) 2021; 57:6707-6724. [PMID: 34137395 DOI: 10.1039/d1cc02322e] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Diacyl peroxides, which can be easily synthesized from corresponding carboxylic acids, are commonly utilized as radical initiators and one electron oxidants. Under thermal, transition-metal catalysis or irradiation conditions the cleavage of relatively weak O-O bonds would occur followed by CO2 extrusion to generate the corresponding aryl or alkyl radicals. Thus, diacyl peroxides can be employed as ideal arylating and alkylating reagents in organic synthesis, including C-H/N-H arylation/alkylation, aryl/alkyl radical addition to unsaturated bonds, hetero arylation/alkylation, eliminative arylation/alkylation, perfluoroalkylation etc. Moreover, these arylation/alkylation protocols have been successfully utilized in the synthesis and late-stage functionalization of natural products as well as bioactive molecules. In this review, recent advances on arylation and alkylation using diacyl peroxides as aryl and alkyl radical sources are summarized and discussed.
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Affiliation(s)
- Han Liu
- School of Petrochemical Engineering, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University, Changzhou 213164, P. R. China.
| | - Jin-Tao Yu
- School of Petrochemical Engineering, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University, Changzhou 213164, P. R. China.
| | - Changduo Pan
- School of Petrochemical Engineering, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University, Changzhou 213164, P. R. China. and School of Chemistry & Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, P. R. China.
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12
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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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13
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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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14
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Abstract
This review highlights the state-of-the-art advances in C(sp3)–H functionalization involving isocyanides through the synergistic combination of isocyanide insertion and C(sp3)–H bond activation.
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Affiliation(s)
- Weixiang Wang
- Department of Chemistry
- Innovative Drug Research Center
- School of Medicine
- Shanghai University
- Shanghai 200444
| | - Tianqi Liu
- Department of Chemistry
- Innovative Drug Research Center
- School of Medicine
- Shanghai University
- Shanghai 200444
| | - Chang-Hua Ding
- Department of Chemistry
- Innovative Drug Research Center
- School of Medicine
- Shanghai University
- Shanghai 200444
| | - Bin Xu
- Department of Chemistry
- Innovative Drug Research Center
- School of Medicine
- Shanghai University
- Shanghai 200444
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15
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Xue Y, Xue D, He Q, Ge Q, Li W, Shao L. Additive-Free Radical Cascade Reaction of Oxime Esters: Synthesis of Pyrroline-Functionalized Phenanthridines. J Org Chem 2020; 85:12284-12293. [PMID: 32916054 DOI: 10.1021/acs.joc.0c01532] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A variety of dihydropyrrole-functionalized phenanthridines were efficiently synthesized by the metal-free, radical cascade cyclization reaction of 2-isocyanobiphenyls with γ,δ-unsaturated oxime esters. The C-N/C-C/C-C bonds were formed via the oil bath method in a one-pot procedure with broad substrate applicability. The radical process was supported by kinetic isotope effect studies and radical inhibition studies.
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Affiliation(s)
- Yijie Xue
- School of Pharmacy, Fudan University, 826 Zhangheng Road, Zhangjiang Hi-tech Park, Pudong, Shanghai 201203, China
| | - Dengqi Xue
- School of Pharmacy, Fudan University, 826 Zhangheng Road, Zhangjiang Hi-tech Park, Pudong, Shanghai 201203, China.,State Key Laboratory of Medical Neurobiology, Fudan University, 138 Yixueyuan Road, Shanghai 200032, China
| | - Qian He
- School of Pharmacy, Fudan University, 826 Zhangheng Road, Zhangjiang Hi-tech Park, Pudong, Shanghai 201203, China
| | - Qianwei Ge
- 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
| | - Liming Shao
- School of Pharmacy, Fudan University, 826 Zhangheng Road, Zhangjiang Hi-tech Park, Pudong, Shanghai 201203, China.,State Key Laboratory of Medical Neurobiology, Fudan University, 138 Yixueyuan Road, Shanghai 200032, China
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16
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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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17
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Malviya B, Singh K, Jaiswal PK, Shukla M, Verma VP, Vanangamudi M, Jassal AK, Punjabi PB, Sharma S. Catalyst- and Solvent-Free Coupling of 2-Methyl Quinazolinones and Isatins: An Environmentally Benign Access of Diastereoselective Schizocommunin Analogues. ACS OMEGA 2019; 4:12146-12155. [PMID: 31460329 PMCID: PMC6682076 DOI: 10.1021/acsomega.9b01514] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Accepted: 07/05/2019] [Indexed: 06/10/2023]
Abstract
An environmentally benign highly atom-economic protocol for the construction of the C-C bond has been developed under catalyst- and solvent-free conditions. This protocol involves the efficient coupling of 2-methyl quinazolinones with isatin for the highly diastereoselective access of schizocommunin derivatives in excellent yields (up to 97%). Furthermore, the preliminary cytotoxicity screening of selected schizocommunin analogues displayed promising anticancer activity against human cancer cell lines, and the cytotoxic potential of active compound 12ac was also validated by in silico molecular docking simulation studies.
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Affiliation(s)
| | - Karandeep Singh
- Department
of Chemistry, Mohanlal Sukhadia University, Udaipur 313001, India
| | - Pradeep K. Jaiswal
- Department
of Biochemistry and Biophysics, Texas A&M
University, College
Station, Texas 77843, United States
| | - Monika Shukla
- Department
of Chemistry, Banasthali University, Newai-Jodhpuriya Road, Vanasthali 304022, India
| | - Ved Prakash Verma
- Department
of Chemistry, Banasthali University, Newai-Jodhpuriya Road, Vanasthali 304022, India
| | - Murugesan Vanangamudi
- Department
of Medicinal and Pharmaceutical Chemistry, Sree Vidyanikethan College of Pharmacy, Tirupati, 517102 India
| | - Amanpreet Kaur Jassal
- Schulich
Faculty of Chemistry, Technion-Israel Institute
of Technology, Technion 3200003, Israel
| | - Pinki B. Punjabi
- Department
of Chemistry, Mohanlal Sukhadia University, Udaipur 313001, India
| | - Siddharth Sharma
- Department
of Chemistry, Mohanlal Sukhadia University, Udaipur 313001, India
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18
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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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19
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Hu W, Teng F, Hu H, Luo S, Zhu Q. Pd-Catalyzed C(sp 2)-H Imidoylative Annulation: A General Approach To Construct Dibenzoox(di)azepines. J Org Chem 2019; 84:6524-6535. [PMID: 31050283 DOI: 10.1021/acs.joc.9b00683] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A general method to construct the scaffolds of dibenzooxazepine and dibenzodiazepine, through Pd-catalyzed isocyanide insertion and intramolecular C(sp2)-H activation, has been developed. This is the first example of seven-membered heterocycle formation by C-H imidoylative annulation.
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Affiliation(s)
- Weiming Hu
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health , Chinese Academy of Sciences , 190 Kaiyuan Avenue , Guangzhou 510530 , China.,University of Chinese Academy of Sciences, No. 19(A) Yuquan Road , Shijingshan District, Beijing 100049 , China
| | - Fan Teng
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health , Chinese Academy of Sciences , 190 Kaiyuan Avenue , Guangzhou 510530 , China.,University of Chinese Academy of Sciences, No. 19(A) Yuquan Road , Shijingshan District, Beijing 100049 , China
| | - Huaanzi Hu
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health , Chinese Academy of Sciences , 190 Kaiyuan Avenue , Guangzhou 510530 , China.,University of Chinese Academy of Sciences, No. 19(A) Yuquan Road , Shijingshan District, Beijing 100049 , China
| | - Shuang Luo
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health , Chinese Academy of Sciences , 190 Kaiyuan Avenue , Guangzhou 510530 , China.,University of Chinese Academy of Sciences, No. 19(A) Yuquan Road , Shijingshan District, Beijing 100049 , China
| | - Qiang Zhu
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health , Chinese Academy of Sciences , 190 Kaiyuan Avenue , Guangzhou 510530 , China.,University of Chinese Academy of Sciences, No. 19(A) Yuquan Road , Shijingshan District, Beijing 100049 , China
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20
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Teng F, Hu W, Hu H, Luo S, Zhu Q. Selective C−H or N−H Imidoylative Annulation of 2‐(2‐Isocyanophenyl)‐1
H
‐indoles Leading to Diverse Indole‐fused Scaffolds. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201801623] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Fan Teng
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and HealthChinese Academy of Sciences 190 Kaiyuan Avenue Guangzhou 510530 People's Republic of China
- University of Chinese Academy of Sciences No. 19(A) Yuquan Road, Shijingshan District Beijing 100049 People's Republic of China
| | - Weiming Hu
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and HealthChinese Academy of Sciences 190 Kaiyuan Avenue Guangzhou 510530 People's Republic of China
- University of Chinese Academy of Sciences No. 19(A) Yuquan Road, Shijingshan District Beijing 100049 People's Republic of China
| | - Huaanzi Hu
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and HealthChinese Academy of Sciences 190 Kaiyuan Avenue Guangzhou 510530 People's Republic of China
- University of Chinese Academy of Sciences No. 19(A) Yuquan Road, Shijingshan District Beijing 100049 People's Republic of China
| | - Shuang Luo
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and HealthChinese Academy of Sciences 190 Kaiyuan Avenue Guangzhou 510530 People's Republic of China
- University of Chinese Academy of Sciences No. 19(A) Yuquan Road, Shijingshan District Beijing 100049 People's Republic of China
| | - Qiang Zhu
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and HealthChinese Academy of Sciences 190 Kaiyuan Avenue Guangzhou 510530 People's Republic of China
- University of Chinese Academy of Sciences No. 19(A) Yuquan Road, Shijingshan District Beijing 100049 People's Republic of China
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21
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MA X, WU G, ZHAO Y, YUAN Z, XIA N, YANG M, LIU L. A Benzothiazole-based Ratiometric Fluorescent Probe for Benzoyl Peroxide and Its Applications for Living Cells Imaging. ANAL SCI 2019; 35:91-97. [DOI: 10.2116/analsci.18sdp09] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Xiaohua MA
- School of Chemical Engineering and Technology, China University of Mining and Technology
- Henan Key Laboratory of Biomolecular Recognition and Sensing, College of Chemistry and Chemical Engineering, Shangqiu Normal University
| | - Guoguang WU
- School of Chemical Engineering and Technology, China University of Mining and Technology
| | - Yuehua ZHAO
- School of Chemical Engineering and Technology, China University of Mining and Technology
| | - Zibo YUAN
- School of Chemical Engineering and Technology, China University of Mining and Technology
| | - Ning XIA
- Key Laboratory of New Optoelectronic Functional Materials (Henan Province), College of Chemistry and Chemical Engineering, Anyang Normal University
| | - Mengnan YANG
- School of Chemical Engineering and Technology, China University of Mining and Technology
| | - Lin LIU
- Key Laboratory of New Optoelectronic Functional Materials (Henan Province), College of Chemistry and Chemical Engineering, Anyang Normal University
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22
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Zhang C, Pi J, Wang L, Liu P, Sun P. Silyl radical initiated radical cascade addition/cyclization: synthesis of silyl functionalized 4H-pyrido[4,3,2-gh]phenanthridin-5(6H)-ones. Org Biomol Chem 2018; 16:9223-9229. [PMID: 30475364 DOI: 10.1039/c8ob02670j] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A cyclization cascade initiated by the addition of a silyl radical to an electron-deficient carbon-carbon double bond of N-arylacrylamides, followed by intramolecular cyano group insertion and homolytic aromatic substitution has been reported. In the presence of di-lauroyl peroxide (LPO), under metal-free conditions, several readily available hydrosilanes were successfully used as the source of silyl radicals and a series of silyl functionalized 4H-pyrido[4,3,2-gh]phenanthridin-5(6H)-ones were obtained in moderate to good yields.
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Affiliation(s)
- Chen Zhang
- College of Chemistry and Materials Science, Nanjing Normal University, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Nanjing 210023, China.
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23
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Lu SC, Li HS, Gong YL, Zhang SP, Zhang JG, Xu S. Combination of PhI(OAc)2 and 2-Nitropropane as the Source of Methyl Radical in Room-Temperature Metal-Free Oxidative Decarboxylation/Cyclization: Construction of 6-Methyl Phenanthridines and 1-Methyl Isoquinolines. J Org Chem 2018; 83:15415-15425. [DOI: 10.1021/acs.joc.8b02701] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Shi-Chao Lu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, and Beijing Key Laboratory of Active Substance Discovery and Drugability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, 2A NanWei Road, Xicheng Distrct, Beijing 100050, PR China
| | - Hong-Shuang Li
- Institute of Pharmacology, School of Pharmaceutical Sciences, Taishan Medical University, 619 Changcheng Road, Taian 271016, PR China
| | - Ya-Ling Gong
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, and Beijing Key Laboratory of Active Substance Discovery and Drugability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, 2A NanWei Road, Xicheng Distrct, Beijing 100050, PR China
| | - Shi-Peng Zhang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, and Beijing Key Laboratory of Active Substance Discovery and Drugability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, 2A NanWei Road, Xicheng Distrct, Beijing 100050, PR China
| | - Ji-Guo Zhang
- Institute of Pharmacology, School of Pharmaceutical Sciences, Taishan Medical University, 619 Changcheng Road, Taian 271016, PR China
| | - Shu Xu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, and Beijing Key Laboratory of Active Substance Discovery and Drugability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, 2A NanWei Road, Xicheng Distrct, Beijing 100050, PR China
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24
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Chen S, Feng DF, Li DY, Liu PN. Radical Cyanotrifluoromethylation of Isocyanides: Step-Economical Access to CF 3-Containing Nitriles, Amines, and Imines. Org Lett 2018; 20:5418-5422. [PMID: 30148642 DOI: 10.1021/acs.orglett.8b02328] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A novel copper-catalyzed radical cyanotrifluoromethylation has been achieved through a multicomponent reaction of isocyanides, Togni's reagent, and trimethylsilyl cyanides, affording trifluoroacetimidoyl nitriles in good yields. This reaction demonstrates a unique feature of merging two valuable functional groups-trifluoromethyl (CF3) and cyan (CN)-onto the same C atom. The transformation proceeds by the initial addition of the CF3 radical to isocyanide and the subsequent intermolecular C-CN formation. The products can be successfully transformed to a series of CF3-containing amines and imines that may serve in the synthesis of valuable pharmaceuticals and agrochemicals.
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Affiliation(s)
- Shuang Chen
- Shanghai Key Laboratory of Functional Materials Chemistry, Key Lab for Advanced Materials and School of Chemistry & Molecular Engineering , East China University of Science & Technology , Meilong Road 130 , Shanghai 200237 , China
| | - Da-Fu Feng
- Shanghai Key Laboratory of Functional Materials Chemistry, Key Lab for Advanced Materials and School of Chemistry & Molecular Engineering , East China University of Science & Technology , Meilong Road 130 , Shanghai 200237 , China
| | - Deng-Yuan Li
- Shanghai Key Laboratory of Functional Materials Chemistry, Key Lab for Advanced Materials and School of Chemistry & Molecular Engineering , East China University of Science & Technology , Meilong Road 130 , Shanghai 200237 , China
| | - Pei-Nian Liu
- Shanghai Key Laboratory of Functional Materials Chemistry, Key Lab for Advanced Materials and School of Chemistry & Molecular Engineering , East China University of Science & Technology , Meilong Road 130 , Shanghai 200237 , China
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25
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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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26
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Zhou B, Zheng L, Xu Z, Jin H, Wu Q, Li T, Liu Y. Synthesis of Functionalized Phenathridine-6-carbonitriles via Copper-catalyzed Annulation of Vinyl Azides and NaN3
in the Presence of PhI(OAc)2. ChemistrySelect 2018. [DOI: 10.1002/slct.201801772] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Bingwei Zhou
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology; Zhejiang University of Technology, Hangzhou; 310014 P. R. China
| | - Limeng Zheng
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology; Zhejiang University of Technology, Hangzhou; 310014 P. R. China
| | - Zheng Xu
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology; Zhejiang University of Technology, Hangzhou; 310014 P. R. China
| | - Hongwei Jin
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology; Zhejiang University of Technology, Hangzhou; 310014 P. R. China
| | - Qingan Wu
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology; Zhejiang University of Technology, Hangzhou; 310014 P. R. China
| | - Ting Li
- College of Chemistry and Pharmaceutical Engineering; Nanyang Normal University, Nangyang, Henan; 473061 P. R. China
| | - Yunkui Liu
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology; Zhejiang University of Technology, Hangzhou; 310014 P. R. China
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27
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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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28
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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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29
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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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30
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Li J, Caiuby CAD, Paixão MW, Li CJ. Synthesis of 6-Trifluoromethylphenanthridines through Radical Trifluoromethylation of Isocyanides with Sodium Triflinate under Visible Light. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701487] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jianbin Li
- Department of Chemistry; McGill University; 801 Sherbrooke Street West QC H3A 0B8 Montreal Canada
| | - Clarice A. D. Caiuby
- Department of Chemistry; McGill University; 801 Sherbrooke Street West QC H3A 0B8 Montreal Canada
- Center of Excellence for Research in Sustainable Chemistry (CERSusChem); Department of Chemistry; Federal University of São Carlos UFSCar; Rodovia Washington Luís, km 235, SP-310 13565-905 São Carlos São Paulo Brazil
| | - Márcio W. Paixão
- Center of Excellence for Research in Sustainable Chemistry (CERSusChem); Department of Chemistry; Federal University of São Carlos UFSCar; Rodovia Washington Luís, km 235, SP-310 13565-905 São Carlos São Paulo Brazil
| | - Chao-Jun Li
- Department of Chemistry; McGill University; 801 Sherbrooke Street West QC H3A 0B8 Montreal Canada
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31
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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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32
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Li X, Liang D, Huang W, Sun H, Wang L, Ren M, Wang B, Ma Y. Metal-free photocatalyzed cross coupling of aryl (heteroaryl) bromides with isonitriles. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.10.074] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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33
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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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34
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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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35
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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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36
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Yadav AK, Yadav LDS. Visible light photoredox catalysis with N-hydroxyphthalimide for [4+2] cyclization between N-methylanilines and maleimides. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2016.12.077] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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37
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Lu SC, Li HS, Gong YL, Wang XL, Li FR, Li F, Duan GY, Xu S. Use of unprotected amino acids in metal-free tandem radical cyclization reactions: divergent synthesis of 6-alkyl/acyl phenanthridines. RSC Adv 2017. [DOI: 10.1039/c7ra12318c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
We demonstrated a metal-free protocol for the construction of C–C bonds utilizing unprotected amino acids as radical sources.
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Affiliation(s)
- Shi-Chao Lu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines
- Beijing Key Laboratory of Active Substance Discovery and Drugability Evaluation
- Institute of Materia Medica
- Peking Union Medical College
- Chinese Academy of Medical Sciences
| | - Hong-Shuang Li
- School of Pharmaceutical Sciences
- Taishan Medical University
- Taian 271016
- PR China
| | - Ya-Ling Gong
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines
- Beijing Key Laboratory of Active Substance Discovery and Drugability Evaluation
- Institute of Materia Medica
- Peking Union Medical College
- Chinese Academy of Medical Sciences
| | - Xiao-Lei Wang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines
- Beijing Key Laboratory of Active Substance Discovery and Drugability Evaluation
- Institute of Materia Medica
- Peking Union Medical College
- Chinese Academy of Medical Sciences
| | - Fu-Rong Li
- School of Pharmaceutical Sciences
- Taishan Medical University
- Taian 271016
- PR China
| | - Fei Li
- School of Pharmaceutical Sciences
- Taishan Medical University
- Taian 271016
- PR China
| | - Gui-Yun Duan
- School of Pharmaceutical Sciences
- Taishan Medical University
- Taian 271016
- PR China
| | - Shu Xu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines
- Beijing Key Laboratory of Active Substance Discovery and Drugability Evaluation
- Institute of Materia Medica
- Peking Union Medical College
- Chinese Academy of Medical Sciences
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38
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Zhang R, Shi X, Yan Q, Li Z, Wang Z, Yu H, Wang X, Qi J, Jiang M. Free-radical initiated cascade methylation or trideuteromethylation of isocyanides with dimethyl sulfoxides. RSC Adv 2017. [DOI: 10.1039/c7ra08484f] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
The methylation or trideuteromethylation reaction of isocyanides with dimethyl sulfoxides in a radical way is developed, which offers a low-cost, easy-operation cascade methylation strategy for the synthesis of phenanthridines or isoquinolines.
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Affiliation(s)
- Rui Zhang
- College of Chemistry & Environmental Science
- Hebei University
- Baoding
- P. R. China
| | - Xiaoqian Shi
- College of Chemistry & Environmental Science
- Hebei University
- Baoding
- P. R. China
| | - Qinqin Yan
- College of Chemistry & Environmental Science
- Hebei University
- Baoding
- P. R. China
| | - Zejiang Li
- College of Chemistry & Environmental Science
- Hebei University
- Baoding
- P. R. China
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education
| | - Zheng Wang
- College of Chemistry & Environmental Science
- Hebei University
- Baoding
- P. R. China
| | - Haifei Yu
- College of Chemistry & Environmental Science
- Hebei University
- Baoding
- P. R. China
| | - Xiaoke Wang
- College of Chemistry & Environmental Science
- Hebei University
- Baoding
- P. R. China
| | - Jing Qi
- College of Chemistry & Environmental Science
- Hebei University
- Baoding
- P. R. China
| | - Menglu Jiang
- College of Chemistry & Environmental Science
- Hebei University
- Baoding
- P. R. China
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39
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Xue D, Chen H, Xu Y, Yu H, Yu L, Li W, Xie Q, Shao L. Microwave-assisted synthesis of hydroxyl-containing isoquinolines by metal-free radical cyclization of vinyl isocyanides with alcohols. Org Biomol Chem 2017; 15:10044-10052. [DOI: 10.1039/c7ob02221b] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A convenient microwave-assisted protocol for the synthesis of hydroxyl-containing isoquinolines from a metal-free radical cyclization reaction of vinyl isonitriles with alcohols was developed with moderate-to-excellent yields.
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Affiliation(s)
- Dengqi Xue
- School of Pharmacy
- Fudan University
- Shanghai 201203
- China
| | - Hao Chen
- School of Pharmacy
- Fudan University
- Shanghai 201203
- China
| | - Yulong Xu
- School of Pharmacy
- Fudan University
- Shanghai 201203
- China
| | - Haihua Yu
- School of Pharmacy
- Fudan University
- Shanghai 201203
- China
| | - Linqian Yu
- School of Pharmacy
- Fudan University
- Shanghai 201203
- China
| | - Wei Li
- School of Pharmacy
- Fudan University
- Shanghai 201203
- China
| | - Qiong Xie
- School of Pharmacy
- Fudan University
- Shanghai 201203
- China
| | - Liming Shao
- School of Pharmacy
- Fudan University
- Shanghai 201203
- China
- State Key Laboratory of Medical Neurobiology
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40
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Li D, Mao T, Huang J, Zhu Q. A one-pot synthesis of [1,2,3]triazolo[1,5-a]quinoxalines from 1-azido-2-isocyanoarenes with high bond-forming efficiency. Chem Commun (Camb) 2017; 53:1305-1308. [DOI: 10.1039/c6cc08543a] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
An efficient approach to prepare 1,2,3-triazolo[1,5-a]quinoxaline scaffolds, starting from 1-azido-2-isocyanoarenes and terminal acetylenes or substituted acetaldehydes, has been developed.
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Affiliation(s)
- Dengke Li
- State Key Laboratory of Respiratory Disease
- Guangzhou Institutes of Biomedicine and Health
- Chinese Academy of Sciences
- Guangzhou 510530
- China
| | - Tingting Mao
- State Key Laboratory of Respiratory Disease
- Guangzhou Institutes of Biomedicine and Health
- Chinese Academy of Sciences
- Guangzhou 510530
- China
| | - Jinbo Huang
- State Key Laboratory of Respiratory Disease
- Guangzhou Institutes of Biomedicine and Health
- Chinese Academy of Sciences
- Guangzhou 510530
- China
| | - Qiang Zhu
- State Key Laboratory of Respiratory Disease
- Guangzhou Institutes of Biomedicine and Health
- Chinese Academy of Sciences
- Guangzhou 510530
- China
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41
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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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42
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Du MR, Zhang XB, Si SM, Yang F, Wang L. Theoretical insights into C–C bond formation through isonitrile insertion into a Cp*Ti complex. RSC Adv 2017. [DOI: 10.1039/c7ra05680j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Reaction of Cp*(Cl)Ti(2,3-dimethylbutadiene) with isonitriles is studied using DFT, detailed elementary reaction steps and N-substitution effects of isonitrile are examined.
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Affiliation(s)
- Ming-Ran Du
- School of Chemical Engineering
- Anhui University of Science and Technology
- Huainan 232001
- People's Republic of China
| | - Xiang-Biao Zhang
- School of Chemical Engineering
- Anhui University of Science and Technology
- Huainan 232001
- People's Republic of China
| | - Sheng-Meng Si
- School of Chemical Engineering
- Anhui University of Science and Technology
- Huainan 232001
- People's Republic of China
| | - Feng Yang
- School of Chemical Engineering
- Anhui University of Science and Technology
- Huainan 232001
- People's Republic of China
| | - Lei Wang
- Department of Chemistry
- Huaibei Normal University
- Huaibei
- People's Republic of China
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43
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Du MR, Zhang XB, Si SM, Wang L. Theoretical insights into the reaction of Cp*(Cl)Hf(diene) with isonitriles. RSC Adv 2017. [DOI: 10.1039/c7ra08981c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
The reaction of Cp*(Cl)Hf(2,3-dimethylbutadiene) with isonitriles is theoretically investigated, and detailed elementary reactions and the substitution effects are examined.
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Affiliation(s)
- Ming-Ran Du
- School of Chemical Engineering
- Anhui University of Science and Technology
- Huainan
- People's Republic of China
| | - Xiang-Biao Zhang
- School of Chemical Engineering
- Anhui University of Science and Technology
- Huainan
- People's Republic of China
| | - Sheng-Meng Si
- School of Chemical Engineering
- Anhui University of Science and Technology
- Huainan
- People's Republic of China
| | - Lei Wang
- Department of Chemistry
- Huaibei Normal University
- Huaibei
- People's Republic of China
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44
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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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45
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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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46
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Zhou Y, Wu C, Dong X, Qu J. Synthesis of 6-Trichloromethylphenanthridines by Transition Metal-Free Radical Cyclization of 2-Isocyanobiphenyls. J Org Chem 2016; 81:5202-8. [DOI: 10.1021/acs.joc.6b00885] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Yuhan Zhou
- State Key Laboratory of Fine
Chemicals, School of Pharmaceutical Science and Technology, Dalian University of Technology, Dalian 116024, P.R. China
| | - Changpeng Wu
- State Key Laboratory of Fine
Chemicals, School of Pharmaceutical Science and Technology, Dalian University of Technology, Dalian 116024, P.R. China
| | - Xiaoliang Dong
- State Key Laboratory of Fine
Chemicals, School of Pharmaceutical Science and Technology, Dalian University of Technology, Dalian 116024, P.R. China
| | - Jingping Qu
- State Key Laboratory of Fine
Chemicals, School of Pharmaceutical Science and Technology, Dalian University of Technology, Dalian 116024, P.R. China
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47
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Qian P, Du B, Jiao W, Mei H, Han J, Pan Y. Cascade alkylarylation of substituted N-allylbenzamides for the construction of dihydroisoquinolin-1(2H)-ones and isoquinoline-1,3(2H,4H)-diones. Beilstein J Org Chem 2016; 12:301-8. [PMID: 26977189 PMCID: PMC4778529 DOI: 10.3762/bjoc.12.32] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Accepted: 02/04/2016] [Indexed: 12/12/2022] Open
Abstract
An oxidative reaction for the synthesis of 4-alkyl-substituted dihydroisoquinolin-1(2H)-ones with N-allylbenzamide derivatives as starting materials has been developed. The radical alkylarylation reaction proceeds through a sequence of alkylation and intramolecular cyclization. The substituent on the C–C double bond was found to play a key role for the progress of the reaction to give the expected products with good chemical yields. Additionally, N-methacryloylbenzamides were also suitable substrates for the current reaction and provided the alkyl-substituted isoquinoline-1,3(2H,4H)-diones in good yield.
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Affiliation(s)
- Ping Qian
- School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, 210093, China
| | - Bingnan Du
- School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, 210093, China
| | - Wei Jiao
- School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, 210093, China; Institute for Chemistry & BioMedical Sciences, Nanjing University, Nanjing, 210093, China
| | - Haibo Mei
- School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, 210093, China
| | - Jianlin Han
- School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, 210093, China
| | - Yi Pan
- School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, 210093, China
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48
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Pan C, Huang B, Hu W, Feng X, Yu JT. Metal-Free Radical Oxidative Annulation of Ynones with Alkanes To Access Indenones. J Org Chem 2016; 81:2087-93. [DOI: 10.1021/acs.joc.6b00072] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Changduo Pan
- School of Chemistry & Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, People’s Republic of China
| | - Bifan Huang
- School of Chemistry & Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, People’s Republic of China
| | - Weiming Hu
- School of Petrochemical Engineering, Jiangsu Key Laboratory
of Advanced Catalytic Materials and Technology, Changzhou University, Changzhou 213164, People’s Republic of China
| | - Xiaomei Feng
- School of Petrochemical Engineering, Jiangsu Key Laboratory
of Advanced Catalytic Materials and Technology, Changzhou University, Changzhou 213164, People’s Republic of China
| | - Jin-Tao Yu
- School of Petrochemical Engineering, Jiangsu Key Laboratory
of Advanced Catalytic Materials and Technology, Changzhou University, Changzhou 213164, People’s Republic of China
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49
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Oxidative difunctionalization of alkynoates via cascade radical addition, aryl migration, and decarboxylation. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2015.12.092] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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50
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Zhang H, Gu Z, Xu P, Hu H, Cheng Y, Zhu C. Metal-free tandem oxidative C(sp3)–H bond functionalization of alkanes and dearomatization of N-phenyl-cinnamamides: access to alkylated 1-azaspiro[4.5]decanes. Chem Commun (Camb) 2016; 52:477-80. [DOI: 10.1039/c5cc07175e] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Metal-free tandem C(sp3)–H bond functionalization of simple alkanes/dearomatization of N-phenyl-cinnamamides is developed, providing 1-azaspiro[4.5]decanes with excellent regioselectivity and diastereoselectivity.
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Affiliation(s)
- Honglin Zhang
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
- P. R. China
| | - Zhangxi Gu
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
- P. R. China
| | - Pan Xu
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
- P. R. China
| | - Hongwen Hu
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
- P. R. China
| | - Yixiang Cheng
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
- P. R. China
| | - Chengjian Zhu
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
- P. R. China
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