1
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Wang YT, Zhang M, Liu ZX, Wu YX, Yan Q, Liu CL, Li JS, Li ZW, Liu HW, Li WS. Visible-Light-Promoted Radical Cascade Cyclization of 2-Vinyl Benzimidazoles: Access to Benzo[4,5]imidazo[1,2- b]isoquinolin- 11(6 H)-ones. J Org Chem 2024. [PMID: 38738957 DOI: 10.1021/acs.joc.4c00444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2024]
Abstract
A visible-light-enabled photoredox radical cascade cyclization of 2-vinyl benzimidazole derivatives is developed. This chemistry is applicable to a wide range of N-aroyl 2-vinyl benzimidazoles as acceptors, and halo compounds, including alkyl halides, acyl chlorides and sulfonyl chlorides, as radical precursors. The Langlois reagent also serves as an effective partner in this photocatalytic oxidative cascade process. This protocol provides a robust alternative for rendering highly functionalized benzo[4,5]imidazo[1,2-b]isoquinolin-11(6H)-ones.
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Affiliation(s)
- Yao-Tian Wang
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation & Hunan Provincial Key Laboratory of CytoChemistry, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, China
| | - Mai Zhang
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation & Hunan Provincial Key Laboratory of CytoChemistry, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, China
| | - Zhi-Xing Liu
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation & Hunan Provincial Key Laboratory of CytoChemistry, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, China
| | - Yu-Xin Wu
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation & Hunan Provincial Key Laboratory of CytoChemistry, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, China
| | - Qian Yan
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation & Hunan Provincial Key Laboratory of CytoChemistry, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, China
| | - Cheng-Liang Liu
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation & Hunan Provincial Key Laboratory of CytoChemistry, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, China
| | - Jiang-Sheng Li
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation & Hunan Provincial Key Laboratory of CytoChemistry, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, China
| | - Zhi-Wei Li
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation & Hunan Provincial Key Laboratory of CytoChemistry, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, China
| | - Han-Wen Liu
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation & Hunan Provincial Key Laboratory of CytoChemistry, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, China
| | - Wen-Sheng Li
- College of Chemistry & Chemical Engineering, Hunan University, Changsha 410082, China
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2
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Huang FP, Qin WJ, Pan XY, Yang K, Wang K, Teng QH. Visible-Light-Induced Chemodivergent Synthesis of Tetracyclic Quinazolinones and 3-Iminoisoindoliones via the Substrate Control Strategy. J Org Chem 2024; 89:4395-4405. [PMID: 38501298 DOI: 10.1021/acs.joc.3c02501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/20/2024]
Abstract
A visible-light-induced chemodivergent synthesis of tetracyclic quinazolinones and 3-iminoisoindoliones has been developed. This chemodivergent reaction afforded two kinds of different products by substrate control. A detailed investigation of the reaction mechanism revealed that this consecutive photoinduced electron transfer (ConPET) cascade cyclization involved a radical process, and the aryl radical was the crucial intermediate. This method employed 4-DPAIPN as a photocatalyst and i-Pr2NEt as a sacrificial electron donor leading to metal-free conditions.
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Affiliation(s)
- Fang-Ping Huang
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China
| | - Wen-Jian Qin
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China
| | - Xin-Yao Pan
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China
| | - Kun Yang
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China
| | - Kai Wang
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China
| | - Qing-Hu Teng
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China
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3
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Cui Y, Xu W, Yang W, Meng F. Access to CF 2COR-Containing Quinazolinones via Visible-Light-Induced Domino Difluoroalkylation/Cyclization of N-Cyanamide Alkenes. Org Lett 2024; 26:2119-2123. [PMID: 38436251 DOI: 10.1021/acs.orglett.4c00457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2024]
Abstract
A green and highly efficient visible-light-induced radical cascade difluoroalkylation/cyclization reaction of N-cyanamide alkenes has been developed. A variety of CF2COR-containing quinazolinones have been obtained in high yields with cheap non-metallic 4CzIPN as the photocatalyst. This photocatalytic reaction provides rapid, facile, and practical access to valuable polycyclic quinazolinone, and it is amenable to the gram scale.
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Affiliation(s)
- Yangyang Cui
- Institute of Pesticide, College of Plant Protection, Yangzhou University, Yangzhou 225009, China
| | - Wen Xu
- Institute of Pesticide, College of Plant Protection, Yangzhou University, Yangzhou 225009, China
| | - Wenchao Yang
- Institute of Pesticide, College of Plant Protection, Yangzhou University, Yangzhou 225009, China
| | - Fei Meng
- Institute of Pesticide, College of Plant Protection, Yangzhou University, Yangzhou 225009, China
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4
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Jiang B, Fan TG, Ran YS, Shen YT, Zhang C, Jiang W, Li YM. Oxidative cascade cyclization of N-arylacrylamides with TMSN 3. Org Biomol Chem 2024; 22:1186-1193. [PMID: 38214570 DOI: 10.1039/d3ob01951a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2024]
Abstract
An azido-radical-triggered cyclization of N-(o-cyanobiaryl)acrylamides with TMSN3via a C(sp3)-N/C(sp2)-C(sp3)/C(sp2)-N bond formation cascade is described. This reaction features mild conditions and high bond-forming efficiency, making it an efficient method for the construction of azide-substituted pyridophenanthridines.
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Affiliation(s)
- Bo Jiang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China.
| | - Tai-Gang Fan
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China.
| | - Yu-Song Ran
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China.
| | - Yun-Tao Shen
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China.
| | - Cui Zhang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China.
| | - Wei Jiang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China.
| | - Ya-Min Li
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China.
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5
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Abonia R, García AC, Hurtado EA, Jaramillo-Gómez LM, Insuasty B, Quiroga J, Nogueras M, Cobo J. Cascade Synthesis of New Indole-Containing Pentacyclic Scaffolds Mediated by Aryl and Iminyl Radicals. Chem Asian J 2024:e202301111. [PMID: 38217883 DOI: 10.1002/asia.202301111] [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: 12/12/2023] [Revised: 01/11/2024] [Accepted: 01/12/2024] [Indexed: 01/15/2024]
Abstract
A five-step approach, starting from simple 1,5-disubstituted indoles, has been implemented for the synthesis of diversely substituted indole-pyrido-indene pentacyclic compounds up to 54 % yield via domino radical-mediated processes in the presence of the radical reagents DLP/TTMSS and AIBN/TTMSS. Reactions proceeded with diverse key starting radical cyano-precursors strategically synthesized which were subsequently transformed into the target pentacyclic compounds through an aryl/iminyl radical-mediated domino reactions sequence. In addition to the routine spectroscopic techniques, the structure of radical precursors, as well as, the target pentacyclic products were unequivocally established by single crystal X-ray diffraction, confirming the effectiveness of the proposed synthetic sequence.
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Affiliation(s)
- Rodrigo Abonia
- Department of Chemistry, Universidad del Valle, A. A. 25360, Cali, Colombia
| | - Andres C García
- Department of Chemistry, Universidad del Valle, A. A. 25360, Cali, Colombia
| | - Eduin A Hurtado
- Department of Chemistry, Universidad del Valle, A. A. 25360, Cali, Colombia
| | | | - Braulio Insuasty
- Department of Chemistry, Universidad del Valle, A. A. 25360, Cali, Colombia
| | - Jairo Quiroga
- Department of Chemistry, Universidad del Valle, A. A. 25360, Cali, Colombia
| | - Manuel Nogueras
- Department of Inorganic and Organic Chemistry, Universidad de Jaén, 23071, Jaén, Spain
| | - Justo Cobo
- Department of Inorganic and Organic Chemistry, Universidad de Jaén, 23071, Jaén, Spain
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6
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Thorat VH, Hsieh JC. Nickel-Catalyzed Intramolecular Dual Annulation Reaction of Aryl Nitrile-Containing 1,2,3-Benzotriazin-4(3 H)-ones: A Pathway To Synthesize Luotonin A and Related Polycyclic Pyrroloquinazolinones. Org Lett 2023; 25:7990-7994. [PMID: 37906681 DOI: 10.1021/acs.orglett.3c03142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2023]
Abstract
Herein, we report a nickel-catalyzed intramolecular denitrogenative dual annulation reaction of aryl nitrile-containing 1,2,3-benzotriazine-4(3H)-ones to synthesize polycyclic pyrroloquinazolinones with a tolerance of a wide diversity of substituents. This catalytic reaction is the first denitrogenative transannulation of 1,2,3-benzotriazine-4(3H)-one with nitrile, which can be applied as the critical step to synthesize luotonin A with a high step economy.
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Affiliation(s)
- Vijaykumar H Thorat
- Department of Chemistry, Tamkang University, New Taipei City 251301, Taiwan, Republic of China
| | - Jen-Chieh Hsieh
- Department of Chemistry, Tamkang University, New Taipei City 251301, Taiwan, Republic of China
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7
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Ran YS, Jiang B, Shen YT, Fan TG, Jiang W, Zhang C, Li YM. Visible-Light-Promoted Cascade Cyclization of 3-Ethynyl-[1,1'-biphenyl]-2-Carbonitriles with Unsaturated α-Bromocarbonyls. Org Lett 2023; 25:7412-7416. [PMID: 37788358 DOI: 10.1021/acs.orglett.3c02938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
A visible-light-promoted cascade cyclization of 3-ethynyl-[1,1'-biphenyl]-2-carbonitriles with unsaturated α-bromocarbonyls for the synthesis of tetrahydrobenzo[mn]cyclopenta[b]acridines is described. Three C(sp3)-C(sp2) bonds, one C(sp2)-N bond, and three cycles can be formed in a single reaction through the addition of a C-centered radical to the carbon-carbon triple bond and three radical cyclizations. This reaction features mild conditions, wide substrate scope, and high bond-forming efficiency.
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Affiliation(s)
- Yu-Song Ran
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China
| | - Bo Jiang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China
| | - Yun-Tao Shen
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China
| | - Tai-Gang Fan
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China
| | - Wei Jiang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China
| | - Cui Zhang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China
| | - Ya-Min Li
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China
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8
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Yamasaki R, Okada Y, Iizumi H, Ito A, Fukuda K, Okamoto I. Structure and Additive-free Transamidation of Planar N-Cyano Amides. J Org Chem 2023; 88:5704-5712. [PMID: 37094254 DOI: 10.1021/acs.joc.3c00172] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2023]
Abstract
Although transamidation of amides generally requires metals, additives, or harsh conditions, we present here a facile transamidation of N-cyano amides with various amines at ambient temperature without any additive. N-cyano amides preferred the trans conformation and have a reduced double bond character revealed by crystal analysis. The DFT study indicates that the transamidation reaction proceeds through the direct attack of amine on the amide carbonyl since the LUMO (or LUMO+1) is located at the carbonyl moiety.
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Affiliation(s)
- Ryu Yamasaki
- Showa Pharmaceutical University, 3-3165 Higashi-tamagawagakuen, Machida, Tokyo 194-8543, Japan
| | - Yuko Okada
- Showa Pharmaceutical University, 3-3165 Higashi-tamagawagakuen, Machida, Tokyo 194-8543, Japan
| | - Hiromi Iizumi
- Showa Pharmaceutical University, 3-3165 Higashi-tamagawagakuen, Machida, Tokyo 194-8543, Japan
| | - Ai Ito
- Showa Pharmaceutical University, 3-3165 Higashi-tamagawagakuen, Machida, Tokyo 194-8543, Japan
| | - Kazuo Fukuda
- Showa Pharmaceutical University, 3-3165 Higashi-tamagawagakuen, Machida, Tokyo 194-8543, Japan
| | - Iwao Okamoto
- Showa Pharmaceutical University, 3-3165 Higashi-tamagawagakuen, Machida, Tokyo 194-8543, Japan
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9
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Yang Z, Wu X, Zhang J, Yu JT, Pan C. Metal-Free Photoinduced Hydrocyclization of Unactivated Alkenes toward Ring-Fused Quinazolin-4(3 H)-ones via Intermolecular Hydrogen Atom Transfer. Org Lett 2023; 25:1683-1688. [PMID: 36883803 DOI: 10.1021/acs.orglett.3c00329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
Abstract
A visible-light-induced hydrocyclization of unactivated alkenes was developed using 3CzClIPN as the photocatalyst to generate substituted α-methyldeoxyvasicinones and α-methylmackinazolinones in moderate to good yields. An intermolecular hydrogen atom transfer with THF as the hydrogen source was involved. Mechanism studies indicated that the intramolecular addition of the in situ formed aminal radical to the unactivated alkene generated the polycyclic quinazolinone.
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Affiliation(s)
- Zixian Yang
- School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China
| | - Xian Wu
- School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China
| | - Jie Zhang
- School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China
| | - Jin-Tao Yu
- School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China
| | - Changduo Pan
- School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China.,School of Chemistry and Chemical Engineering, Jiangsu University of Technology, Changzhou 213001, P. R. China
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10
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Pang B, Wang Y, Hao L, Wu G, Ma Z, Ji Y. Tandem C-C/C-N Bond Formation via Rh(III)-Catalyzed α-Fluoroalkenylation and Sequential Annulation of 2-Arylquinazolinones and gem-Difluorostyrenes. J Org Chem 2023; 88:143-153. [PMID: 36563294 DOI: 10.1021/acs.joc.2c02006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
An efficient method of Rh(III)-catalyzed coupling reaction between 2-arylquinazolinones and gem-difluorostyrenes has been developed. In this work, two diverse structures of monofluoroalkenes and isoindolo[1,2-b]quinazolin-10(12H)-one derivatives were respectively synthesized by controlling the amount of additives (Ca(OH)2 and AgNTf2) to achieve controlled stepwise breaking of the C-F bonds of gem-difluorostyrenes. This reaction has the characteristics of a wide range of substrates and good functional group tolerance. Meanwhile, several control experiments were conducted and a plausible mechanism was proposed.
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Affiliation(s)
- Binghan Pang
- Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Yangyang Wang
- Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Liqiang Hao
- Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Gaorong Wu
- Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Zhihong Ma
- Biotalk Co., LTD, Shanghai 200092, China
| | - Yafei Ji
- Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
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11
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Xu R, Wang Z, Zheng Q, Patil P, Dömling A. A Bifurcated Multicomponent Synthesis Approach to Polycyclic Quinazolinones. J Org Chem 2022; 87:13023-13033. [PMID: 36095044 PMCID: PMC9552225 DOI: 10.1021/acs.joc.2c01561] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
The rapid synthesis of diverse substituted polycyclic
quinazolinones
was achieved by two orthogonal Ugi four-component reaction (Ugi-4CR)-based
protocols: the first two-step approach via an ammonia-Ugi-4CR followed
by palladium-catalyzed annulation; in the second approach, cyanamide
was used unprecedently as an amine component in Ugi-4CR followed by
an AIBN/tributyltin hydride-induced radical reaction. Like no other
method, MCR and cyclization could efficiently construct many biologically
interesting compounds with tailored properties in very few steps.
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Affiliation(s)
- Ruixue Xu
- Drug Design Group, Department of Pharmacy, University of Groningen, Groningen 9713, AV, The Netherlands
| | - Zefeng Wang
- Drug Design Group, Department of Pharmacy, University of Groningen, Groningen 9713, AV, The Netherlands
| | - Qiang Zheng
- Drug Design Group, Department of Pharmacy, University of Groningen, Groningen 9713, AV, The Netherlands
| | - Pravin Patil
- Drug Design Group, Department of Pharmacy, University of Groningen, Groningen 9713, AV, The Netherlands
| | - Alexander Dömling
- Drug Design Group, Department of Pharmacy, University of Groningen, Groningen 9713, AV, The Netherlands
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12
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Pratley C, Fenner S, Murphy JA. Nitrogen-Centered Radicals in Functionalization of sp 2 Systems: Generation, Reactivity, and Applications in Synthesis. Chem Rev 2022; 122:8181-8260. [PMID: 35285636 DOI: 10.1021/acs.chemrev.1c00831] [Citation(s) in RCA: 87] [Impact Index Per Article: 43.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The chemistry of nitrogen-centered radicals (NCRs) has plentiful applications in organic synthesis, and they continue to expand as our understanding of these reactive species increases. The utility of these reactive intermediates is demonstrated in the recent advances in C-H amination and the (di)amination of alkenes. Synthesis of previously challenging structures can be achieved by efficient functionalization of sp2 moieties without prefunctionalization, allowing for faster and more streamlined synthesis. This Review addresses the generation, reactivity, and application of NCRs, including, but not limited to, iminyl, aminyl, amidyl, and aminium species. Contributions from early discovery up to the most recent examples have been highlighted, covering radical initiation, thermolysis, photolysis, and, more recently, photoredox catalysis. Radical-mediated intermolecular amination of (hetero)arenes can occur with a variety of complex amine precursors, generating aniline derivatives, an important class of structures for drug discovery and development. Functionalization of olefins is achievable in high anti-Markovnikov regioselectivity and allows access to difunctionalized structures when the intermediate carbon radicals are trapped. Additionally, the reactivity of NCRs can be harnessed for the rapid construction of N-heterocycles such as pyrrolidines, phenanthridines, quinoxalines, and quinazolinones.
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Affiliation(s)
- Cassie Pratley
- Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, United Kingdom.,GSK Medicines Research Centre, Gunnels Wood Road, Stevenage, Herts SG1 2NY, United Kingdom
| | - Sabine Fenner
- GSK Medicines Research Centre, Gunnels Wood Road, Stevenage, Herts SG1 2NY, United Kingdom
| | - John A Murphy
- Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, United Kingdom
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13
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Liu H, Yang Z, Yu JT, Pan C. Radical Polychloromethylation/Cyclization of Unactivated Alkenes: Access to Polychloromethyl‑Substituted Ring‐Fused Quinazolinones. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200001] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Han Liu
- Changzhou University - Wujin Campus CHINA
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14
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Wu F, Dong W, Fan S, Yuan Y, Liang C, Chen A, Yin Z, Zhang Z. Rapid Synthesis of Luotonin A Derivatives via Synergistic Visible-Light Photoredox and Acid Catalysis. J Org Chem 2022; 87:1302-1312. [PMID: 35014842 DOI: 10.1021/acs.joc.1c02617] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The merging of visible-light photoredox and acid catalysis allowed for an intramolecular Povarov cycloaddition reaction using eosin Y as the photocatalyst and TsOH·H2O as the co-catalyst. A visible-light-promoted dehydrogenative cyclization protocol enabled the construction of Luotonin A derivatives with up to 97% yield.
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Affiliation(s)
- Feng Wu
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China.,Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Wuheng Dong
- Medicine Center, Guangxi University of Science and Technology, Liuzhou, Guangxi 545006, China
| | - Sijie Fan
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Yao Yuan
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Caiyun Liang
- Medicine Center, Guangxi University of Science and Technology, Liuzhou, Guangxi 545006, China
| | - Aiyu Chen
- Medicine Center, Guangxi University of Science and Technology, Liuzhou, Guangxi 545006, China
| | - Zuodong Yin
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Zhaoguo Zhang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
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15
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Xiaojing T, Zhenzhen F, Si J, Zhiwei L, Jiangsheng L, Yuefei Z, Cuihong L, Weidong L. Metal-Free Synthesis of Benzimidazo[1,2- c]quinazolines from N-Cyanobenzimidazoles via Double C—H Functionalizations. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202205030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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16
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Liu H, Yang Z, Huang G, Yu JT, Pan C. Cyanomethylative cyclization of unactivated alkenes with nitriles for the synthesis of cyano-containing ring-fused quinazolin-4(3 H)-ones. NEW J CHEM 2022. [DOI: 10.1039/d1nj05001j] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis of cyano-containing pyrrolo- and piperidino-quinazolinones was developed using alkyl nitriles through radical cascade addition/cyclization under metal-free conditions.
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Affiliation(s)
- Han Liu
- School of Petrochemical Engineering, Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, Changzhou University, Changzhou 213164, P. R. China
| | - Zixian Yang
- School of Petrochemical Engineering, Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, Changzhou University, Changzhou 213164, P. R. China
| | - Gao Huang
- School of Petrochemical Engineering, Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, Changzhou University, Changzhou 213164, P. R. China
| | - Jin-Tao Yu
- School of Petrochemical Engineering, Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, Changzhou University, Changzhou 213164, P. R. China
| | - Changduo Pan
- School of Chemical and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, P. R. China
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17
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Shi S, Zheng Z, Zhang Y, Yang Y, Ma D, Gao Y, Liu Y, Tang G, Zhao Y. Photoinduced Phosphorylation/Cyclization of Cyanoaromatics for Divergent Access to Mono- and Diphosphorylated Polyheterocycles. Org Lett 2021; 23:9348-9352. [PMID: 34846909 DOI: 10.1021/acs.orglett.1c03360] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The visible-light-driven switchable phosphorylation of cyanoaromatics with the 1,6-enyne moiety for the diverse and selective synthesis of phosphorylated polyheterocycles, including phosphorylated aminophosphonates, iminophosphonates, and ketones, has been described. Importantly, these photocatalytic transformations feature good functional group tolerance and high regio- and chemoselectivities under mild reaction conditions. These findings might stimulate the exploration of new photocatalytic utilizations of P(O)-H compounds by employing CN-containing substrates as the radical acceptors.
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Affiliation(s)
- Shanshan Shi
- Department of Chemistry, College of Chemistry and Chemical Engineering, and Key Laboratory for Chemical Biology of Fujian Province, Xiamen University, Xiamen, Fujian 361005, China
| | - Zhipeng Zheng
- Department of Chemistry, College of Chemistry and Chemical Engineering, and Key Laboratory for Chemical Biology of Fujian Province, Xiamen University, Xiamen, Fujian 361005, China
| | - Yumeng Zhang
- Department of Chemistry, College of Chemistry and Chemical Engineering, and Key Laboratory for Chemical Biology of Fujian Province, Xiamen University, Xiamen, Fujian 361005, China
| | - Yufei Yang
- Department of Chemistry, College of Chemistry and Chemical Engineering, and Key Laboratory for Chemical Biology of Fujian Province, Xiamen University, Xiamen, Fujian 361005, China
| | - Denghui Ma
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
| | - Yuzhen Gao
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Yan Liu
- Department of Chemistry, College of Chemistry and Chemical Engineering, and Key Laboratory for Chemical Biology of Fujian Province, Xiamen University, Xiamen, Fujian 361005, China
| | - Guo Tang
- Department of Chemistry, College of Chemistry and Chemical Engineering, and Key Laboratory for Chemical Biology of Fujian Province, Xiamen University, Xiamen, Fujian 361005, China
| | - Yufen Zhao
- Department of Chemistry, College of Chemistry and Chemical Engineering, and Key Laboratory for Chemical Biology of Fujian Province, Xiamen University, Xiamen, Fujian 361005, China
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18
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Hess A, Guelen HC, Alandini N, Mourati A, Guersoy YC, Knochel P. Preparation of Polyfunctionalized Aromatic Nitriles from Aryl Oxazolines. Chemistry 2021; 28:e202103700. [PMID: 34766655 PMCID: PMC9300023 DOI: 10.1002/chem.202103700] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Indexed: 12/17/2022]
Abstract
A selective ortho,ortho’‐functionalization of readily available aryl oxazolines by two successive magnesiations with sBu2Mg in toluene followed by trapping reactions with electrophiles, such as (hetero)aryl iodides or bromides, iodine, tosyl cyanide, ethyl cyanoformate or allylic bromides (39 examples, 62–99 % yield) is reported. Treatment of these aryl oxazolines with excess oxalyl chloride and catalytic amounts of DMF (50 °C, 4 h) provided the corresponding nitriles (36 examples, 73–99 % yield). Conversions of these nitriles to valuable heterocycles are reported, and a tentative mechanism is proposed.
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Affiliation(s)
- A Hess
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13, Haus F, 81377, München, Germany
| | - H C Guelen
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13, Haus F, 81377, München, Germany
| | - N Alandini
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13, Haus F, 81377, München, Germany
| | - A Mourati
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13, Haus F, 81377, München, Germany
| | - Y C Guersoy
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13, Haus F, 81377, München, Germany
| | - P Knochel
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13, Haus F, 81377, München, Germany
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19
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Rasapalli S, Sammeta VR, Murphy ZF, Golen JA, Agama K, Pommier Y, Savinov SN. Design and synthesis of C-aryl angular luotonins via a one-pot aza-Nazarov-Friedlander sequence and their Topo-I inhibition studies along with C-aryl vasicinones and luotonins. Bioorg Med Chem Lett 2021; 41:127998. [PMID: 33794318 PMCID: PMC8113096 DOI: 10.1016/j.bmcl.2021.127998] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Revised: 03/17/2021] [Accepted: 03/18/2021] [Indexed: 12/24/2022]
Abstract
A facile one-pot synthesis of C-ring substituted angular luotonins has been realized via a methanesulfonic acid mediated aza-Nazarov-Friedlander condensation sequence on quinazolinonyl enones. Topoisomerase I (topo-I) inhibition studies revealed that the angular luotonin library (7a-7l) and their regioisomeric analogs (linear luotonins, 8a-8l) are weak negative modulators, compared to camptothecin. These results would fare well for the design of topo-I-inert luotonins for non-oncological applications such as anti-fungal and insecticide lead developments. Surprisingly, the tricyclic vasicinones (9h, 9i, and 9j) showed better topo-I inhibition compared to pentacyclic C-aryl luotonins providing a novel pharmacophore for further explorations.
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Affiliation(s)
- Sivappa Rasapalli
- University of Massachusetts Dartmouth, Department of Chemistry and Biochemistry, 285 Old Westport Rd, North Dartmouth, MA 02747, USA.
| | - Vamshikrishna Reddy Sammeta
- University of Massachusetts Dartmouth, Department of Chemistry and Biochemistry, 285 Old Westport Rd, North Dartmouth, MA 02747, USA
| | - Zachary F Murphy
- University of Massachusetts Dartmouth, Department of Chemistry and Biochemistry, 285 Old Westport Rd, North Dartmouth, MA 02747, USA
| | - James A Golen
- University of Massachusetts Dartmouth, Department of Chemistry and Biochemistry, 285 Old Westport Rd, North Dartmouth, MA 02747, USA
| | - Keli Agama
- Developmental Therapeutics Branch and Laboratory of Molecular Pharmacology, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892-4255, USA
| | - Yves Pommier
- Developmental Therapeutics Branch and Laboratory of Molecular Pharmacology, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892-4255, USA
| | - Sergey N Savinov
- Department of Biochemistry and Molecular Biology, UMass Amherst, Amherst, MA 01003, USA
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20
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Jiang S, Tian XJ, Feng SY, Li JS, Li ZW, Lu CH, Li CJ, Liu WD. Visible-Light Photoredox Catalyzed Double C–H Functionalization: Radical Cascade Cyclization of Ethers with Benzimidazole-Based Cyanamides. Org Lett 2021; 23:692-696. [DOI: 10.1021/acs.orglett.0c03853] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Si Jiang
- Hunan Provincial Key Laboratory of Material Protection for Electric Power and Transportation, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha 410114, China
| | - Xiao-Jing Tian
- Hunan Provincial Key Laboratory of Material Protection for Electric Power and Transportation, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha 410114, China
| | - Shu-Yao Feng
- Hunan Provincial Key Laboratory of Material Protection for Electric Power and Transportation, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha 410114, China
| | - Jiang-Sheng Li
- Hunan Provincial Key Laboratory of Material Protection for Electric Power and Transportation, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha 410114, China
| | - Zhi-Wei Li
- Hunan Provincial Key Laboratory of Material Protection for Electric Power and Transportation, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha 410114, China
| | - Cui-Hong Lu
- Hunan Provincial Key Laboratory of Material Protection for Electric Power and Transportation, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha 410114, China
| | - Chao-Jun Li
- Department of Chemistry and FQRNT Centre for Green Chemistry and Catalysis, McGill University, 801 Sherbrooke Street West, Montreal, Quebec H3A 0B8, Canada
| | - Wei-Dong Liu
- National Engineering Research Center for Agrochemicals, Hunan Research Institute of Chemical Industry, Changsha 410007, China
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21
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Sun K, Lv QY, Lin YW, Yu B, He WM. Nitriles as radical acceptors in radical cascade reactions. Org Chem Front 2021. [DOI: 10.1039/d0qo01058h] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The application of the cyano group as a radical acceptor in the cascade reactions for the construction of various important heterocycles and carbocycles was summarized.
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Affiliation(s)
- Kai Sun
- Green Catalysis Center
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Qi-Yan Lv
- Green Catalysis Center
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Ying-Wu Lin
- School of Chemistry and Chemical Engineering
- University of South China
- Hengyang
- China
| | - Bing Yu
- Green Catalysis Center
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Wei-Min He
- Department of Chemistry
- Hunan University of Science and Engineering
- Yongzhou 425100
- China
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation
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22
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Choi JH, Kim K, Oh H, Han S, Mishra NK, Kim IS. Ru(ii)-Catalyzed C-H addition and oxidative cyclization of 2-aryl quinazolinones with activated aldehydes. Org Biomol Chem 2020; 18:9611-9622. [PMID: 33020797 DOI: 10.1039/d0ob01663b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The ruthenium(ii)-catalyzed cross-coupling reaction between 2-aryl quinazolinones and activated aldehydes is described. This method enables the site-selective hydroxyalkylation under redox-neutral conditions. Moreover, this protocol provides a facile access to various tetracyclic isoindoloquinazolinones by using Cu(OAc)2 as an external oxidant via C-H addition and subsequent intramolecular cyclization. A wide substrate scope and a high level of chemoselectivity as well as broad functional group tolerance are observed.
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Affiliation(s)
- Jin Ho Choi
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea.
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23
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Fernandes RA, Kumar P, Choudhary P. Evolution of Strategies in Protecting‐Group‐Free Synthesis of Natural Products: A Recent Update. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001246] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Rodney A. Fernandes
- Department of Chemistry Indian Institute of Technology Bombay 400076 Mumbai, Powai Maharashtra India
| | - Praveen Kumar
- Department of Chemistry Indian Institute of Technology Bombay 400076 Mumbai, Powai Maharashtra India
| | - Priyanka Choudhary
- Department of Chemistry Indian Institute of Technology Bombay 400076 Mumbai, Powai Maharashtra India
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24
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Rhodium-catalyzed [4+1] annulation of sulfoxonium ylides: Sequential ortho-C H functionalization/carbonyl α-amination toward polycyclic quinazolinones. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152441] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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25
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Zhang H, Wei Z, Zhang AH, Yu S. Access to Cyanoimines Enabled by Dual Photoredox/Copper-Catalyzed Cyanation of O-Acyl Oximes. Org Lett 2020; 22:7315-7320. [PMID: 32866393 DOI: 10.1021/acs.orglett.0c02659] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An efficient strategy for the synthesis of pharmaceutically important and synthetically useful cyanoimines, as well as cyanamides, has been described. This strategy is enabled by dual photoredox/copper-catalyzed cyanation of O-acyl oximes or O-acyl hydroxamides. This state of the art protocol for cyanoimines and cyanamides features readily available starting materials, mild reaction conditions, good functional group tolerance, and operational simplicity. The resultant cyanoimines can be transformed into structurally diverse and functionally important N-containing heterocycles.
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Affiliation(s)
- Hao Zhang
- State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing 210023, China
| | - Ziyan Wei
- Institute of Marine Biology, College of Oceanography, Hohai University, Nanjing 210098, China
| | - Ai Hua Zhang
- Institute of Marine Biology, College of Oceanography, Hohai University, Nanjing 210098, China
| | - Shouyun Yu
- State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing 210023, China
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26
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Turner OJ, Hirst DJ, Murphy JA. Hydrogen Atom Transfer‐Mediated Domino Cyclisation Reaction to Access (Spiro)Quinazolinones. Chemistry 2020; 26:3026-3029. [DOI: 10.1002/chem.201905712] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Indexed: 12/12/2022]
Affiliation(s)
- Oliver J. Turner
- GlaxoSmithKline, Medicines Research Centre Gunnels Wood Road Stevenage Hertfordshire SG1 2NY UK
- Department of Pure and Applied ChemistryUniversity of Strathclyde 295 Cathedral Street Glasgow G11XL UK
| | - David J. Hirst
- GlaxoSmithKline, Medicines Research Centre Gunnels Wood Road Stevenage Hertfordshire SG1 2NY UK
| | - John A. Murphy
- Department of Pure and Applied ChemistryUniversity of Strathclyde 295 Cathedral Street Glasgow G11XL UK
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27
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Atarod M, Safari J. Synergistic Effect between Ultrasound Irradiation and Na
2
CO
3
in
N
‐Acylation Reaction: Applied for the Synthesis of Novel
N
‐Acylcyanamide Derivatives. ChemistrySelect 2020. [DOI: 10.1002/slct.201904793] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Monireh Atarod
- Department of Organic ChemistryUniversity of Kashan Kashan 87317–51167 Iran
| | - Javad Safari
- Department of Organic ChemistryUniversity of Kashan Kashan 87317–51167 Iran
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28
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Zhang J, Wang X, Chen D, Kang Y, Ma Y, Szostak M. Synthesis of C6-Substituted Isoquinolino[1,2-b]quinazolines via Rh(III)-Catalyzed C–H Annulation with Sulfoxonium Ylides. J Org Chem 2020; 85:3192-3201. [DOI: 10.1021/acs.joc.9b03065] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Jin Zhang
- College of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi’an 710021, China
| | - Xiaogang Wang
- College of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi’an 710021, China
| | - Di Chen
- College of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi’an 710021, China
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China
| | - Yifan Kang
- College of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi’an 710021, China
| | - Yangmin Ma
- College of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi’an 710021, China
| | - Michal Szostak
- College of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi’an 710021, China
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, New Jersey 07102, United States
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29
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Nie B, Wu W, Zhang Y, Jiang H, Zhang J. Recent advances in the synthesis of bridgehead (or ring-junction) nitrogen heterocycles via transition metal-catalyzed C–H bond activation and functionalization. Org Chem Front 2020. [DOI: 10.1039/d0qo00510j] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
An update on recent advances in the synthesis of bridgehead nitrogen fused heterocycles via transition metal-catalyzed C–H activation and functionalization is reported.
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Affiliation(s)
- Biao Nie
- Key Laboratory of Functional Molecular Engineering of Guangdong Province
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou
- China
| | - Wanqing Wu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou
- China
| | - Yingjun Zhang
- State Key Laboratory of Anti-Infective Drug Development (NO. 2015DQ780357)
- Sunshine Lake Pharma Co
- Ltd
- HEC R&D Center
- Dongguan, 523871
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou
- China
| | - Ji Zhang
- State Key Laboratory of Anti-Infective Drug Development (NO. 2015DQ780357)
- Sunshine Lake Pharma Co
- Ltd
- HEC R&D Center
- Dongguan, 523871
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30
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Chen X, Zhang X, Lu S, Sun P. Electrosynthesis of polycyclic quinazolinones and rutaecarpine from isatoic anhydrides and cyclic amines. RSC Adv 2020; 10:44382-44386. [PMID: 35517151 PMCID: PMC9058480 DOI: 10.1039/d0ra09382c] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 11/30/2020] [Indexed: 12/14/2022] Open
Abstract
A direct decarboxylative cyclization between readily available isatoic anhydrides and cyclic amines was established to construct polycyclic fused quinazolinones employing electrochemical methods. This procedure was performed in an undivided cell without the use of a transition-metal-catalyst and external oxidant. A broad scope of polycyclic fused quinazolinones were obtained in moderate to good yields. Additionally, rutaecarpine was also prepared through our method in one step in good yield. Polycyclic quinazolinones and rutaecarpine were synthesized from isatoic anhydrides and cyclic amines through an electrochemical method without an external oxidant and transition-metal-catalyst.![]()
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Affiliation(s)
- Xingyu Chen
- Institute of Chinese Meteria Medica
- Artermisinin Research Center
- Academy of Chinese Medical Sciences
- Beijing
- P. R. China
| | - Xing Zhang
- Institute of Chinese Meteria Medica
- Artermisinin Research Center
- Academy of Chinese Medical Sciences
- Beijing
- P. R. China
| | - Sixian Lu
- Institute of Chinese Meteria Medica
- Artermisinin Research Center
- Academy of Chinese Medical Sciences
- Beijing
- P. R. China
| | - Peng Sun
- Institute of Chinese Meteria Medica
- Artermisinin Research Center
- Academy of Chinese Medical Sciences
- Beijing
- P. R. China
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31
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Bera A, Ali SA, Manna SK, Ikbal M, Misra S, Saha A, Samanta S. A solvent- and catalyst-free tandem reaction: synthesis, and photophysical and biological applications of isoindoloquinazolinones. NEW J CHEM 2020. [DOI: 10.1039/c9nj05808g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
An easy green synthetic approach for fused isoindoloquinazolinones has been developed under neat reaction (yields up to 91%) conditions.
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Affiliation(s)
- Anirban Bera
- Department of Chemistry
- Bidhannagar College
- Kolkata 700064
- India
- Department of Chemistry
| | - Sk Asraf Ali
- Department of Chemistry
- Bidhannagar College
- Kolkata 700064
- India
| | | | - Mohammed Ikbal
- Department of Chemistry Berhampore Girls' College
- Berhampore 742101
- India
| | - Sandip Misra
- Department of Microbiology
- Bidhannagar College
- Kolkata 700064
- India
| | - Amit Saha
- Department of Chemistry
- Kolkata 700032
- India
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32
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Soni VK, Hwang HS, Moon YK, Park SW, You Y, Cho EJ. Generation of N-Centered Radicals via a Photocatalytic Energy Transfer: Remote Double Functionalization of Arenes Facilitated by Singlet Oxygen. J Am Chem Soc 2019; 141:10538-10545. [DOI: 10.1021/jacs.9b05572] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Vineet Kumar Soni
- Department of Chemistry, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Republic of Korea
| | - Ho Seong Hwang
- Department of Chemistry, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Republic of Korea
| | - Yu Kyung Moon
- Division of Chemical Engineering and Materials Science, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Sung-Woo Park
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), and Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Youngmin You
- Division of Chemical Engineering and Materials Science, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Eun Jin Cho
- Department of Chemistry, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Republic of Korea
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33
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Bao H, Zhou B, Jin H, Liu Y. Copper-catalyzed three-component reaction of N-heteroaryl aldehydes, nitriles, and water. Org Biomol Chem 2019; 17:5021-5028. [PMID: 31044206 DOI: 10.1039/c9ob00599d] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
An efficient and straightforward method for the synthesis of N-heteroaroyl imides has been successfully developed involving a copper-catalyzed radical-triggered three-component reaction of N-heteroaryl aldehydes, nitriles, and water. Mechanistic studies indicate that the reaction may undergo a radical-triggered Ritter-type reaction in which water serves as the oxygen source for the formation of the C-O bond. The reaction has advantages such as a broad substrate scope for the N-heteroaryl aldehydes, atom economy, and simple operation.
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Affiliation(s)
- Hanyang Bao
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou, 310014, P. R. China.
| | - Bingwei Zhou
- 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.
| | - 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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34
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Shan XH, Zheng HX, Yang B, Tie L, Fu JL, Qu JP, Kang YB. Copper-catalyzed oxidative benzylic C-H cyclization via iminyl radical from intermolecular anion-radical redox relay. Nat Commun 2019; 10:908. [PMID: 30796224 PMCID: PMC6385223 DOI: 10.1038/s41467-019-08849-z] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Accepted: 01/30/2019] [Indexed: 12/29/2022] Open
Abstract
Base-promoted C-H cleavage without transition metals opens a practical alternative for the one based on noble metals or radical initiators. The resulting carbanion can pass through radical addition to unsaturated bonds like C-N or C-C triple bonds, in which stoichiometric oxidants are needed. When in situ C-H cleavage meets catalytic carbanion-radical relay, it turns to be challenging but has not been accomplished yet. Here we report the combination of base-promoted benzylic C-H cleavage and copper-catalyzed carbanion-radical redox relay. Catalytic amount of naturally abundant and inexpensive copper salt, such as copper(II) sulfate, is used for anion-radical redox relay without any external oxidant. By avoiding using N-O/N-N homolysis or radical initiators to generate iminyl radicals, this strategy realizes modular synthesis of N-H indoles and analogs from abundant feedstocks, such as toluene and nitrile derivatives, and also enables rapid synthesis of large scale pharmaceuticals. The synthesis of high value heterocycles from cheap starting materials remains challenging. Here, the authors develop a new strategy to realize practical and modular synthesis of N-H indoles and analogs from toluene and nitrile derivatives using naturally abundant copper salt as catalyst.
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Affiliation(s)
- Xiang-Huan Shan
- Department of Chemistry, University of Science and Technology of China, 230026, Hefei, Anhui, China
| | - Hong-Xing Zheng
- Department of Chemistry, University of Science and Technology of China, 230026, Hefei, Anhui, China
| | - Bo Yang
- Department of Chemistry, University of Science and Technology of China, 230026, Hefei, Anhui, China
| | - Lin Tie
- Department of Chemistry, University of Science and Technology of China, 230026, Hefei, Anhui, China
| | - Jia-Le Fu
- Department of Chemistry, University of Science and Technology of China, 230026, Hefei, Anhui, China
| | - Jian-Ping Qu
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, 211816, Nanjing, China.
| | - Yan-Biao Kang
- Department of Chemistry, University of Science and Technology of China, 230026, Hefei, Anhui, China.
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35
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Nasrollahzadeh M, Sajjadi M, Sajadi SM. Green synthesis of Cu/zirconium silicate nanocomposite by using
Rubia tinctorum
leaf extract and its application in the preparation of
N
‐benzyl‐
N
‐arylcyanamides. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4705] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Mohaddeseh Sajjadi
- Department of Chemistry, Faculty of ScienceUniversity of Qom Qom 3716146611 Iran
| | - S. Mohammad Sajadi
- Department of Petroleum Geoscience, Faculty of ScienceSoran University PO Box 624 Soran Kurdistan Regional Government Iraq
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36
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Jin JK, Zhang FL, Zhao Q, Lu JA, Wang YF. Synthesis of Diverse Boron-Handled N-Heterocycles via Radical Borylative Cyclization of N-Allylcyanamides. Org Lett 2018; 20:7558-7562. [PMID: 30427202 DOI: 10.1021/acs.orglett.8b03303] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A synthetic method based on radical borylation/cyclization cascades of N-allylcyanamides was developed to construct diverse boron-substituted N-heterocycles. In the reaction process, the N-heterocyclic carbene-boryl radical underwent a chemo- and regioselective addition to the alkene moiety, followed by cyclization with the N-cyano group. The resulting amide-iminyl radical intermediates underwent further reactions to afford various boron-tethered N-heterocyclic molecules. Further transformations to access synthetically useful building blocks were also demonstrated.
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Affiliation(s)
- Ji-Kang Jin
- Hefei National Laboratory for Physical Sciences at the Microscale, Center for Excellence in Molecular Synthesis of CAS, and Department of Chemistry , University of Science and Technology of China , Hefei 230026 , China
| | - Feng-Lian Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale, Center for Excellence in Molecular Synthesis of CAS, and Department of Chemistry , University of Science and Technology of China , Hefei 230026 , China
| | - Qiang Zhao
- Hefei National Laboratory for Physical Sciences at the Microscale, Center for Excellence in Molecular Synthesis of CAS, and Department of Chemistry , University of Science and Technology of China , Hefei 230026 , China
| | - Jun-An Lu
- Hefei National Laboratory for Physical Sciences at the Microscale, Center for Excellence in Molecular Synthesis of CAS, and Department of Chemistry , University of Science and Technology of China , Hefei 230026 , China
| | - Yi-Feng Wang
- Hefei National Laboratory for Physical Sciences at the Microscale, Center for Excellence in Molecular Synthesis of CAS, and Department of Chemistry , University of Science and Technology of China , Hefei 230026 , China.,State Key Laboratory of Elemento-Organic Chemistry , Nankai University , Tianjin 300071 , China
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37
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Huang MH, Hao WJ, Jiang B. Recent Advances in Radical-Enabled Bicyclization and Annulation/1,n
-Bifunctionalization Reactions. Chem Asian J 2018; 13:2958-2977. [DOI: 10.1002/asia.201801119] [Citation(s) in RCA: 107] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Min-Hua Huang
- School of Chemistry & Materials Science; Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials; Jiangsu Normal University; Xuzhou 221116 P. R. China
- Biotechnology and Pharmaceutical Engineering; Nanjing Tech University; Nanjing 210009, Jiangsu P. R. China
| | - Wen-Juan Hao
- School of Chemistry & Materials Science; Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials; Jiangsu Normal University; Xuzhou 221116 P. R. China
| | - Bo Jiang
- School of Chemistry & Materials Science; Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials; Jiangsu Normal University; Xuzhou 221116 P. R. China
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38
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Ghorbani-Choghamarani A, Taherinia Z, Nikoorazm M. Ionic liquid supported on magnetic nanoparticles as a novel reusable nanocatalyst for the efficient synthesis of tetracyclic quinazoline compounds. RESEARCH ON CHEMICAL INTERMEDIATES 2018. [DOI: 10.1007/s11164-018-3510-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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39
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Arasteh Fard Z, Dilmaghani KA, Soheilizad M, Larijani B, Mahdavi M. Copper-catalyzed efficient synthesis of 5-arylindazolo[3,2-b]quinazolin-7(5H)-ones from 2-nitrobenzaldehydes. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.03.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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40
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Yu Y, Yuan W, Huang H, Cai Z, Liu P, Sun P. Visible-Light-Mediated Decarboxylative Alkylation Cascade Cyano Insertion/Cyclization of N-Arylacrylamides under Transition-Metal-Free Conditions. J Org Chem 2018; 83:1654-1660. [DOI: 10.1021/acs.joc.7b03080] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yulan Yu
- School of Chemistry and Materials
Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes
and Pollution Control, Jiangsu Collaborative Innovation Center of
Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China
| | - Weiwen Yuan
- School of Chemistry and Materials
Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes
and Pollution Control, Jiangsu Collaborative Innovation Center of
Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China
| | - Hansheng Huang
- School of Chemistry and Materials
Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes
and Pollution Control, Jiangsu Collaborative Innovation Center of
Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China
| | - Zhiqiang Cai
- School of Chemistry and Materials
Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes
and Pollution Control, Jiangsu Collaborative Innovation Center of
Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China
| | - Ping Liu
- School of Chemistry and Materials
Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes
and Pollution Control, Jiangsu Collaborative Innovation Center of
Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China
| | - Peipei Sun
- School of Chemistry and Materials
Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes
and Pollution Control, Jiangsu Collaborative Innovation Center of
Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China
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41
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Huang HM, Adams RW, Procter DJ. Reductive cyclisations of amidines involving aminal radicals. Chem Commun (Camb) 2018; 54:10160-10163. [DOI: 10.1039/c8cc05178j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The first general study of aminal radical cyclisations, triggered by reduction of amidines with SmI2, delivers quinazolinones with complete diastereocontrol.
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Affiliation(s)
- Huan-Ming Huang
- School of Chemistry
- Oxford Road
- University of Manchester
- Manchester
- UK
| | - Ralph W. Adams
- School of Chemistry
- Oxford Road
- University of Manchester
- Manchester
- UK
| | - David J. Procter
- School of Chemistry
- Oxford Road
- University of Manchester
- Manchester
- UK
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42
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Xu G, Tong C, Cui S, Dai L. A silver catalyzed domino reaction of N-cyanamide alkenes and 1,3-dicarbonyls for the synthesis of quinazolinones. Org Biomol Chem 2018; 16:5899-5906. [DOI: 10.1039/c8ob01252k] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A silver catalyzed domino reaction of N-cyanamide alkenes and 1,3-dicarbonyls has been developed for the facile synthesis of quinazolinones.
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Affiliation(s)
- Gang Xu
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou 310027
- P. R. China
| | - Chaodi Tong
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou 310027
- P. R. China
| | - Sunliang Cui
- Institute of Drug Discovery and Design
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou 310058
- P. R. China
| | - Liyan Dai
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou 310027
- P. R. China
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43
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Liu X, Wu Z, Zhang Z, Liu P, Sun P. Synthesis of trifluoroalkyl or difluoroalkyl phenanthridine derivatives via cascade reaction using an intramolecular cyano group as a radical acceptor under photoredox catalysis. Org Biomol Chem 2018; 16:414-423. [DOI: 10.1039/c7ob02804k] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
In the presence of Ru(phen)3Cl2 or fac-Ir(ppy)3 under visible-light irradiation, the addition of fluorinated radicals to N-arylacrylamides followed by an intramolecular cyano group insertion cascade cyclization process produced the target compounds in moderate to good yields.
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Affiliation(s)
- Xu Liu
- 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
| | - Zhongjie Wu
- 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
| | - Zeguo 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
| | - Ping Liu
- 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
| | - Peipei Sun
- 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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44
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Zhang C, Pi J, Chen S, Liu P, Sun P. Construction of a 4H-pyrido[4,3,2-gh]phenanthridin-5(6H)-one skeleton via a catalyst-free radical cascade addition/cyclization using azo compounds as radical sources. Org Chem Front 2018. [DOI: 10.1039/c7qo00926g] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The new radical addition/cyano insertion/homolytic aromatic substitution cascade reaction initiated by the thermal homolysis of azo compounds under catalyst-free conditions produced polycyclic phenanthridine derivatives.
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Affiliation(s)
- Chen Zhang
- College of Chemistry and Materials Science
- Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials
- Nanjing Normal University
- Nanjing 210023
| | - Junxia Pi
- College of Chemistry and Materials Science
- Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials
- Nanjing Normal University
- Nanjing 210023
| | - Shu Chen
- College of Chemistry and Materials Science
- Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials
- Nanjing Normal University
- Nanjing 210023
| | - Ping Liu
- College of Chemistry and Materials Science
- Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials
- Nanjing Normal University
- Nanjing 210023
| | - Peipei Sun
- College of Chemistry and Materials Science
- Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials
- Nanjing Normal University
- Nanjing 210023
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45
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Zhong X, Chen N, Xu J. A concise synthesis of cyclobrassinin and its analogues via a thiyl radical aromatic substitution. NEW J CHEM 2018. [DOI: 10.1039/c8nj02037j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Cyclobrassinin and its six and seven-membered ring analogues have been synthesized through a thiyl radical-mediated intramolecular aromatic substitution of brassinin derivatives.
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Affiliation(s)
- Xin Zhong
- State Key Laboratory of Chemical Resource Engineering
- Department of Organic Chemistry
- Faculty of Science
- Beijing University of Chemical Technology
- Beijing 100029
| | - Ning Chen
- State Key Laboratory of Chemical Resource Engineering
- Department of Organic Chemistry
- Faculty of Science
- Beijing University of Chemical Technology
- Beijing 100029
| | - Jiaxi Xu
- State Key Laboratory of Chemical Resource Engineering
- Department of Organic Chemistry
- Faculty of Science
- Beijing University of Chemical Technology
- Beijing 100029
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46
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Yu Y, Cai Z, Yuan W, Liu P, Sun P. Radical Addition/Insertion/Cyclization Cascade Reaction To Assemble Phenanthridines from N-Arylacrylamide Using Cyano as a Bridge under Photoredox Catalysis. J Org Chem 2017; 82:8148-8156. [DOI: 10.1021/acs.joc.7b01447] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yulan Yu
- School of Chemistry and Materials
Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes
and Pollution Control, Jiangsu Collaborative Innovation Center of
Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China
| | - Zhiqiang Cai
- School of Chemistry and Materials
Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes
and Pollution Control, Jiangsu Collaborative Innovation Center of
Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China
| | - Weiwen Yuan
- School of Chemistry and Materials
Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes
and Pollution Control, Jiangsu Collaborative Innovation Center of
Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China
| | - Ping Liu
- School of Chemistry and Materials
Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes
and Pollution Control, Jiangsu Collaborative Innovation Center of
Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China
| | - Peipei Sun
- School of Chemistry and Materials
Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes
and Pollution Control, Jiangsu Collaborative Innovation Center of
Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China
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47
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Li X, Fang X, Zhuang S, Liu P, Sun P. Photoredox Catalysis: Construction of Polyheterocycles via Alkoxycarbonylation/Addition/Cyclization Sequence. Org Lett 2017; 19:3580-3583. [PMID: 28656766 DOI: 10.1021/acs.orglett.7b01553] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A novel visible-light-induced cascade reaction for the preparation of ester-functionalized polyheterocycles was developed under metal-free conditions, which was initiated by an intermolecular radical addition to a carbon-carbon double bond of N-arylacrylamide derivatives using alkyl carbazate as the ester source followed by cyano-mediated cyclization. The desired phenanthridine derivative products were isolated in moderate to high yields with broad substrate scope.
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Affiliation(s)
- Xuanxuan Li
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Nanjing Normal University , Nanjing 210023, China
| | - Xinxin Fang
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Nanjing Normal University , Nanjing 210023, China
| | - Shengyi Zhuang
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Nanjing Normal University , Nanjing 210023, China
| | - Ping Liu
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Nanjing Normal University , Nanjing 210023, China
| | - Peipei Sun
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Nanjing Normal University , Nanjing 210023, China
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48
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Liu JQ, Ma YG, Zhang MM, Wang XS. Consecutive Sonogashira Coupling and Hydroamination Cyclization for the Synthesis of Isoindolo[1,2-b]quinazolin-10(12H)-ones Catalyzed by CuI/l-Proline. J Org Chem 2017; 82:4918-4923. [DOI: 10.1021/acs.joc.7b00259] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Jian-Quan Liu
- School of Chemistry and Chemical
Engineering, Jiangsu Key Laboratory of Green Synthesis for Functional
Materials, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China
| | - Yong-Gang Ma
- School of Chemistry and Chemical
Engineering, Jiangsu Key Laboratory of Green Synthesis for Functional
Materials, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China
| | - Mei-Mei Zhang
- School of Chemistry and Chemical
Engineering, Jiangsu Key Laboratory of Green Synthesis for Functional
Materials, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China
| | - Xiang-Shan Wang
- School of Chemistry and Chemical
Engineering, Jiangsu Key Laboratory of Green Synthesis for Functional
Materials, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China
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49
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Liu X, Qian P, Wang Y, Pan Y. Metal-free sequential decarbonylative annulation of N-cyanamides for the construction of 2,3-dihydropyrrolo[2,1-b]quinazolin-9(1H)-ones. Org Chem Front 2017. [DOI: 10.1039/c7qo00677b] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A convenient metal-free sequential decarbonylative annulation of unactivated alkenes for the construction of quinazolinones and dihydroisoquinolinones has been developed.
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Affiliation(s)
- Xueke Liu
- Jiangsu Key Laboratory of Advanced Organic Materials
- School of Chemistry & Chemical Engineering
- Nanjing University
- Nanjing
- China
| | - Ping Qian
- Jiangsu Key Laboratory of Advanced Organic Materials
- School of Chemistry & Chemical Engineering
- Nanjing University
- Nanjing
- China
| | - Yi Wang
- Jiangsu Key Laboratory of Advanced Organic Materials
- School of Chemistry & Chemical Engineering
- Nanjing University
- Nanjing
- China
| | - Yi Pan
- Jiangsu Key Laboratory of Advanced Organic Materials
- School of Chemistry & Chemical Engineering
- Nanjing University
- Nanjing
- China
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50
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Yang T, Wang W, Wei D, Zhang T, Han B, Yu W. Synthesis of quinazolinones via radical cyclization of α-azidyl benzamides. Org Chem Front 2017. [DOI: 10.1039/c6qo00656f] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Under visible light irradiation with N-bromosuccinimide, α-azidyl benzamides can be transformed into quinazolinones in high efficiency via cascade radical processes.
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Affiliation(s)
- Tonghao Yang
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- China
| | - Weixia Wang
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- China
| | - Dian Wei
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- China
| | - Tianqi Zhang
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- China
| | - Bing Han
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- China
| | - Wei Yu
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- China
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