1
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Sarmah D, Choudhury A, Bora U. Palladium nanoparticle catalyzed synthesis of indoles via intramolecular Heck cyclisation. Org Biomol Chem 2024; 22:6419-6431. [PMID: 39069947 DOI: 10.1039/d4ob01177e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/30/2024]
Abstract
A system utilizing palladium(II)-PEG has been devised for the intramolecular Heck cyclization of N-vinyl and N-allyl-2-haloanilines. The synthesis of a variety of indoles, including 2,3-diester substituted ones and 3-methyl indoles, has been accomplished using this catalytic system. The N-vinyl starting materials are obtained by the aza-Michael addition of 2-haloanilines with alkynecarboxylate esters, which, upon cyclization, yield ester-substituted indoles. Conversely, N-allyl-2-haloanilines yield 3-methylated indoles as the major products. The high activity of the system is owed to the in situ generation of Pd nanoparticles.
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Affiliation(s)
- Debasish Sarmah
- Dept of Chemical Sciences, Tezpur University, Napam, Sonitpur, Assam, India.
- Department of Chemistry, Dakshin Kamup College, Mirza, Kamrup, Assam, India
| | - Anup Choudhury
- Department of Chemistry, Handique Girls' College, Guwahati, Assam, India
| | - Utpal Bora
- Dept of Chemical Sciences, Tezpur University, Napam, Sonitpur, Assam, India.
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2
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Yu F, Xu L. A concise and stereoselective synthesis of the BCDF tetracyclic ring system of C 19-diterpenoid alkaloids. RSC Adv 2024; 14:21102-21106. [PMID: 38966809 PMCID: PMC11223105 DOI: 10.1039/d4ra02821j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Accepted: 06/18/2024] [Indexed: 07/06/2024] Open
Abstract
A new synthetic route for the BCDF tetracyclic ring system of C19-diterpenoid alkaloids (C19-DTAs) has been developed. The key step is a Pd-catalyzed transannular alkenylation that installs a functionalized bridged F ring. The overall strategy is concise and stereoselective, and it provides a valuable new tool for the synthesis of C19-DTAs. The synthesis begins with a bridged [3.2.1] ring system, which is converted to a key intermediate through a series of highly regio- and stereoselective processes. The introduction of an allylic side chain with high precision is accomplished, culminating in a Pd-catalyzed transannular alkenylation that installs a functionalized bridged F ring to yield the BCDF tetracyclic analog of C19-DTAs.
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Affiliation(s)
- Fangzhou Yu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy, Sichuan University Chengdu 610041 P. R. China
| | - Liang Xu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy, Sichuan University Chengdu 610041 P. R. China
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3
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Sun Z, Sun Z, Wu D, Yi F, Wu H, Ma G, Xu X. Gram-Scale Total Synthesis of TAB with Cardioprotective Activity and the Structure-Activity Relationship of Its Analogs. Molecules 2023; 28:5197. [PMID: 37446862 PMCID: PMC10343337 DOI: 10.3390/molecules28135197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 06/20/2023] [Accepted: 06/21/2023] [Indexed: 07/15/2023] Open
Abstract
Traditional Chinese medicine has been proven to be of great significance in cardioprotective effects. Clinopodium chinense (Lamiaceae) has unique advantages in the treatment and prevention of cardiovascular diseases. Tournefolic acid B (TAB) was proven to be a potent component against myocardial ischemia reperfusion injury (MIRI) from Clinopodium chinense (Lamiaceae). This article will attempt to establish a gram-scale synthesis method of TAB and discuss the structure-activity relationship of its analogs. The total synthesis of TAB was completed in 10 steps with an overall yield of 13%. In addition, analogs were synthesized, and their cardioprotective activity was evaluated on the hypoxia/reoxygenation of H9c2 cells. Amidation of the acid position is helpful to the activity, while methylation of phenolic hydroxyl groups greatly decreased the cardioprotective activity. The easily prepared azxepin analogs also showed cardioprotective activity. Most of the clogP values calculated by Molinspiration ranged from 2.5 to 5, which is in accordance with Lipinski's rule of 5. These findings represent a novel kind of cardioprotective agent that is worthy of further study.
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Affiliation(s)
- Zhonghao Sun
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China
| | - Zhaocui Sun
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China
| | - Daoshun Wu
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China
| | - Fan Yi
- Beijing Key Laboratory of Plant Resources Research and Development, Beijing Technology and Business University, No. 11/33, Fucheng Road, Beijing 100048, China
| | - Haifeng Wu
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China
| | - Guoxu Ma
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China
| | - Xudong Xu
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China
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4
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Maier DIH, Bezuidenhoudt BCB, Marais C. Strategies in the synthesis of dibenzo[ b,f]heteropines. Beilstein J Org Chem 2023; 19:700-718. [PMID: 37284586 PMCID: PMC10241096 DOI: 10.3762/bjoc.19.51] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 05/11/2023] [Indexed: 06/08/2023] Open
Abstract
The dibenzo[b,f]azepine skeleton is important in the pharmaceutical industry, not only in terms of existing commercial antidepressants, anxiolytics and anticonvulsants, but also in reengineering for other applications. More recently, the potential of the dibenzo[b,f]azepine moiety in organic light emitting diodes and dye-sensitized solar cell dyes has been recognised, while catalysts and molecular organic frameworks with dibenzo[b,f]azepine derived ligands have also been reported. This review provides a brief overview of the different synthetic strategies to dibenzo[b,f]azepines and other dibenzo[b,f]heteropines.
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Affiliation(s)
| | | | - Charlene Marais
- Department of Chemistry, University of the Free State, PO Box 339, Bloemfontein, 9300, South Africa
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5
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Wang F, Nishimoto Y, Yasuda M. Lewis Acid‐Catalyzed Diastereoselective C−C Bond Insertion of Diazo Esters into Secondary Benzylic Halides for the Synthesis of α,β‐Diaryl‐β‐haloesters. Angew Chem Int Ed Engl 2022; 61:e202204462. [DOI: 10.1002/anie.202204462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Fei Wang
- Department of Applied Chemistry Graduate School of Engineering Osaka University 2-1 Yamadaoka Suita Osaka 565-0871 Japan
| | - Yoshihiro Nishimoto
- Department of Applied Chemistry Graduate School of Engineering Osaka University 2-1 Yamadaoka Suita Osaka 565-0871 Japan
- Innovative Catalysis Science Division Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI) Osaka University Suita Osaka 565-0871 Japan
| | - Makoto Yasuda
- Department of Applied Chemistry Graduate School of Engineering Osaka University 2-1 Yamadaoka Suita Osaka 565-0871 Japan
- Innovative Catalysis Science Division Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI) Osaka University Suita Osaka 565-0871 Japan
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6
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Lauro FV, Marcela RN, Maria LR, Magdalena AR, Virginia MAM, Francisco DC, Alejandra GE, Tomas LG, Montserrat MG. Evaluation of Biological Activity of a Diazocine Derivative against Heart Failure Using an Ischemia-Reperfusion Injury Model. Drug Res (Stuttg) 2022; 72:404-411. [PMID: 35724672 DOI: 10.1055/a-1840-3199] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
BACKGROUND There are studies, which suggest that some diazocine derivatives can exert effects on the cardiovascular system; however, these effects are not very clear. OBJECTIVE The aim of this research was to evaluate the biological activity of a diazocine derivative against heart failure translated as area infarct. METHODS Biological activity produced by diazocine derivatives against heart failure was determinate using an ischemia/reperfusion injury model. Besides, to characterize the molecular mechanism of effect exerted by diazocine derivative on left ventricular pressure (LVP) was determinate in an isolated rat heart model using nifedipine, PINAME TXA2, and quinalizarin as controls. RESULTS The results showed that diazocine derivative decrease the infarct area and increase the LVP. However, the effect produced by diazocine derivative on LVP was inhibited in the presence of quinalizarin. CONCLUSIONS The results indicate that biological activity produced by diazocine derivative on left ventricular pressure is through protein CK2 activation; this phenomenon could be translated as a decrease in both infarct area and heart failure.
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Affiliation(s)
- Figueroa-Valverde Lauro
- Laboratory of Pharmaco-Chemistry, Faculty of Chemical Biological Sciences, University Autonomous of Campeche, Campeche, México
| | - Rosas-Nexticapa Marcela
- Facultad de Nutrición, Universidad Veracruzana, Médicos y Odontologos s/n, Unidad del Bosque, Veracruz, México
| | - López-Ramos Maria
- Laboratory of Pharmaco-Chemistry, Faculty of Chemical Biological Sciences, University Autonomous of Campeche, Campeche, México
| | - Alvarez-Ramirez Magdalena
- Facultad de Nutrición, Universidad Veracruzana, Médicos y Odontologos s/n, Unidad del Bosque, Veracruz, México
| | - Mateu-Armad Maria Virginia
- Facultad de Nutrición, Universidad Veracruzana, Médicos y Odontologos s/n, Unidad del Bosque, Veracruz, México
| | - Díaz-Cedillo Francisco
- Escuela Nacional de Ciencias Biológicas del Instituto Politécnico Nacional, Santo Tomas, México
| | | | - Lopez Gutierrez Tomas
- Facultad de Nutrición, Universidad Veracruzana, Médicos y Odontologos s/n, Unidad del Bosque, Veracruz, México
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7
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He Y, Wu W, Han Y, Ma W, Sun J, Yan C. One‐Pot Sequential [3+2] Cycloaddition and Ring‐Expansion Reaction for Selective Synthesis of Polycyclic Spirooxindole. ChemistrySelect 2022. [DOI: 10.1002/slct.202201461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yue‐Wei He
- College of Chemistry & Chemical Engineering Yangzhou University Yangzhou 225002 China
| | - Wen‐Tao Wu
- College of Chemistry & Chemical Engineering Yangzhou University Yangzhou 225002 China
| | - Ying Han
- College of Chemistry & Chemical Engineering Yangzhou University Yangzhou 225002 China
| | - Wei‐Qing Ma
- College of Chemistry & Chemical Engineering Yangzhou University Yangzhou 225002 China
| | - Jing Sun
- College of Chemistry & Chemical Engineering Yangzhou University Yangzhou 225002 China
| | - Chao‐Guo Yan
- College of Chemistry & Chemical Engineering Yangzhou University Yangzhou 225002 China
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8
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Wu J, Liu Y, Qian B, Yang H, Lu L, Zhang J, Shang Y. Catalytic Ring Expansion of Indole toward Dibenzoazepine Analogues Enabled by Cationic Palladium(II) Complexes. ACS Catal 2022. [DOI: 10.1021/acscatal.1c06021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Jiaping Wu
- Key Laboratory of Functional Molecular Solids (Ministry of Education), Anhui Key Laboratory of Molecular Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Yanfei Liu
- Key Laboratory of Functional Molecular Solids (Ministry of Education), Anhui Key Laboratory of Molecular Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Baiyang Qian
- Key Laboratory of Functional Molecular Solids (Ministry of Education), Anhui Key Laboratory of Molecular Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Haitao Yang
- Key Laboratory of Functional Molecular Solids (Ministry of Education), Anhui Key Laboratory of Molecular Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Lili Lu
- Key Laboratory of Functional Molecular Solids (Ministry of Education), Anhui Key Laboratory of Molecular Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Jitan Zhang
- Key Laboratory of Functional Molecular Solids (Ministry of Education), Anhui Key Laboratory of Molecular Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Yongjia Shang
- Key Laboratory of Functional Molecular Solids (Ministry of Education), Anhui Key Laboratory of Molecular Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
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9
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Wang F, Nishimoto Y, Yasuda M. Lewis Acid‐Catalyzed Diastereoselective C–C Bond Insertion of Diazo Esters into Secondary Benzylic Halides for the Synthesis of α,β‐Diaryl‐β‐haloesters. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202204462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Fei Wang
- Osaka University School of Engineering Graduate School of Engineering: Osaka Daigaku Kogakubu Daigakuin Kogaku Kenkyuka Applied Chemistry JAPAN
| | | | - Makoto Yasuda
- Osaka University Department of Applied Chemistry, Graduate School of Engineering 2-1 Yamadaoka, Suita 565-0871 Osaka JAPAN
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10
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Gugulothu K, Ramulu Meesa S, Kumar Utkoor U, Rajasekhara Reddy S, Shiva Kumar K. Pd/C and TFA‐promoted One‐pot, Two‐step Cascade Reaction: An Effective Synthesis of Oxepines. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100449] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Kishan Gugulothu
- Department of Chemistry Osmania University Hyderabad 500 007 India
| | | | | | - Sabbasani Rajasekhara Reddy
- Department of Chemistry School of Advanced Sciences Vellore Institute of Technology (VIT) Vellore 632014 India
| | - K. Shiva Kumar
- Department of Chemistry Osmania University Hyderabad 500 007 India
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11
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Yadav S, Suresh S. N
‐Heterocyclic Carbene (NHC)‐Catalyzed Intramolecular Stetter Reaction to Access Dibenzo‐fused Seven‐membered Heterocycles. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100158] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Sanjay Yadav
- Department of Organic Synthesis and Process Chemistry CSIR-Indian Institute of Chemical Technology (CSIR-IICT) Hyderabad 500 007 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201 002 India
| | - Surisetti Suresh
- Department of Organic Synthesis and Process Chemistry CSIR-Indian Institute of Chemical Technology (CSIR-IICT) Hyderabad 500 007 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201 002 India
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12
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Taweesak P, Thongaram P, Kraikruan P, Thanetchaiyakup A, Chuanopparat N, Hsieh HP, Uang BJ, Ngernmeesri P. One-Pot Synthesis of Dibenzo[ b, f]oxepines and Total Synthesis of Bauhinoxepin C. J Org Chem 2021; 86:1955-1963. [PMID: 33400878 DOI: 10.1021/acs.joc.0c02452] [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
In this work, we report a novel and simple one-pot synthesis of substituted dibenzo[b,f]oxepines under transition-metal-free conditions. This cascade process involves nucleophilic aromatic substitution followed by Knoevanagel condensation, as evidenced by the isolated reaction intermediates. We have also achieved the synthesis of anticancer bauhinoxepin C in 7 steps with 5.1% overall yield using this synthetic approach.
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Affiliation(s)
- Pondpavee Taweesak
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand
| | - Phanida Thongaram
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand
| | - Panitan Kraikruan
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand
| | - Adisak Thanetchaiyakup
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand
| | - Nutthawat Chuanopparat
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand
| | - Hsing-Pang Hsieh
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Zhunan, 35053, Taiwan.,Department of Chemistry, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Biing-Jiun Uang
- Department of Chemistry, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Paiboon Ngernmeesri
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand
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13
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Wang K, Pan X, Peng K, Liu ZZ. Regioselective bromination of
6‐hydroxytetrahydroisoquinolines. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.4121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ke Wang
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica Peking Union Medical College and Chinese Academy of Medical Sciences Beijing PR China
| | - Xuan Pan
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica Peking Union Medical College and Chinese Academy of Medical Sciences Beijing PR China
| | - Kun Peng
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica Peking Union Medical College and Chinese Academy of Medical Sciences Beijing PR China
| | - Zhan Z. Liu
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica Peking Union Medical College and Chinese Academy of Medical Sciences Beijing PR China
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14
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Thongaram P, Borwornpinyo S, Kanjanasirirat P, Jearawuttanakul K, Kongsema M, Chuanopparat N, Ngernmeesri P. Synthesis and anticancer activity evaluation of benzo[6,7]oxepino[3,2-b] pyridine derivatives. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131473] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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15
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Choury M, Basilio Lopes A, Blond G, Gulea M. Synthesis of Medium-Sized Heterocycles by Transition-Metal-Catalyzed Intramolecular Cyclization. Molecules 2020; 25:E3147. [PMID: 32660105 PMCID: PMC7397130 DOI: 10.3390/molecules25143147] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 07/04/2020] [Accepted: 07/07/2020] [Indexed: 12/29/2022] Open
Abstract
Medium-sized heterocycles (with 8 to 11 atoms) constitute important structural components of several biologically active natural compounds and represent promising scaffolds in medicinal chemistry. However, they are under-represented in the screening of chemical libraries as a consequence of being difficult to access. In particular, methods involving intramolecular bond formation are challenging due to unfavorable enthalpic and entropic factors, such as transannular interactions and conformational constraints. The present review focuses on the synthesis of medium-sized heterocycles by transition-metal-catalyzed intramolecular cyclization, which despite its drawbacks remains a straightforward and attractive synthesis strategy. The obtained heterocycles differ in their nature, number of heteroatoms, and ring size. The methods are classified according to the metal used (palladium, copper, gold, silver), then subdivided according to the type of bond formed, namely carbon-carbon or carbon-heteroatom.
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Affiliation(s)
| | | | | | - Mihaela Gulea
- Université de Strasbourg, CNRS, Laboratoire d’Innovation Thérapeutique, LIT UMR 7200, F-67000 Strasbourg, France; (M.C.); (A.B.L.); (G.B.)
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16
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Koh S, Pounder A, Brown E, Tam W. Intramolecular Nickel-Catalyzed Ring-Opening Reactions of Oxabenzonorbornadienes with C1
-Tethered Aryl Halides: An Improvement of Method. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000672] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Samuel Koh
- Guelph-Waterloo Centre for Graduate Work in Chemistry and Biochemistry; Department of Chemistry; University of Guelph; N1G 2W1 Guelph Ontario Canada
| | - Austin Pounder
- Guelph-Waterloo Centre for Graduate Work in Chemistry and Biochemistry; Department of Chemistry; University of Guelph; N1G 2W1 Guelph Ontario Canada
| | - Elizabeth Brown
- Guelph-Waterloo Centre for Graduate Work in Chemistry and Biochemistry; Department of Chemistry; University of Guelph; N1G 2W1 Guelph Ontario Canada
| | - William Tam
- Guelph-Waterloo Centre for Graduate Work in Chemistry and Biochemistry; Department of Chemistry; University of Guelph; N1G 2W1 Guelph Ontario Canada
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17
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Koh S, Pounder A, Brown E, Tam W. Intramolecular Palladium-Catalyzed Ring Opening of Oxabenzonorbornadienes with C 1-Tethered Aryl Halides. Org Lett 2020; 22:3433-3437. [PMID: 32294386 DOI: 10.1021/acs.orglett.0c00900] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The novel intramolecular ring opening of oxabenzonorbornadienes with C1-tethered aryl halides was investigated using palladium catalysts to form fused tetracyclic frameworks. The reaction was generally found to synthesize 1,2-dihydronaphthalen-1-ol products with mild selectivity but was capable of synthesizing dehydrated naphthalene products in excellent yield and selectivity. Substituent effects on oxabenzonorbornadiene and on the iodoarene were explored along with the effects of varying tether length, where an efficient reaction was observed in nearly all cases. A total of 16 examples are reported with yields ranging from 0 to 96%.
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Affiliation(s)
- Samuel Koh
- Guelph-Waterloo Centre for Graduate Work in Chemistry and Biochemistry, Department of Chemistry, University of Guelph, Guelph, Ontario, Canada N1G 2W1
| | - Austin Pounder
- Guelph-Waterloo Centre for Graduate Work in Chemistry and Biochemistry, Department of Chemistry, University of Guelph, Guelph, Ontario, Canada N1G 2W1
| | - Elizabeth Brown
- Guelph-Waterloo Centre for Graduate Work in Chemistry and Biochemistry, Department of Chemistry, University of Guelph, Guelph, Ontario, Canada N1G 2W1
| | - William Tam
- Guelph-Waterloo Centre for Graduate Work in Chemistry and Biochemistry, Department of Chemistry, University of Guelph, Guelph, Ontario, Canada N1G 2W1
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18
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Naeimi H, Kiani F. Magnetically thiamine palladium complex nanocomposites as an effective recyclable catalyst for facile sonochemical cross coupling reaction. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.4742] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hossein Naeimi
- Department of Organic Chemistry, Faculty of Chemistry; University of Kashan; Kashan 87317 I.R. Iran
| | - Fatemeh Kiani
- Department of Organic Chemistry, Faculty of Chemistry; University of Kashan; Kashan 87317 I.R. Iran
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19
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Wu WT, Han Y, Sun J, Yan CG. Efficient construction of pyrrolo[1′,2′:1,2]azocino[4,5-c]quinolines via cascade cycloaddition and annulation reaction. Org Chem Front 2019. [DOI: 10.1039/c9qo00891h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel polysubstituted pyrrolo[1′,2′:1,2]azocino[4,5-c]quinolines were efficiently synthesized by a three-component reaction in refluxing methanol and a sequential domino annulation in refluxing acetonitrile.
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Affiliation(s)
- Wen-Tao Wu
- College of Chemistry and Chemical Engineering
- Yangzhou University
- Yangzhou
- China
| | - Ying Han
- College of Chemistry and Chemical Engineering
- Yangzhou University
- Yangzhou
- China
| | - Jing Sun
- College of Chemistry and Chemical Engineering
- Yangzhou University
- Yangzhou
- China
| | - Chao-Guo Yan
- College of Chemistry and Chemical Engineering
- Yangzhou University
- Yangzhou
- China
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20
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Panda N, Mattan I, Ojha S, Purohit CS. Synthesis of medium-sized (6-7-6) ring compounds by iron-catalyzed C-H activation/annulation [corrected]. Org Biomol Chem 2018; 16:7861-7870. [PMID: 30303228 DOI: 10.1039/c8ob01496e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this report, we have described a FeCl3-catalyzed process involving intramolecular annulation of o-phenoxy diarylacetylenes via hydroarylation to afford a series of biologically potent fused seven-membered (6-7-6) ring compounds under mild reaction conditions. This reaction was believed to proceed through Friedel-Crafts type sequential carbometallation followed by protonation to produce phenyldibenz[b,f]oxepines. This method was also extended to synthesize seven-membered rings that are fused with coumarins.
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Affiliation(s)
- Niranjan Panda
- Department of Chemistry, National Institute of Technology, Rourkela, Odisha-769008, India.
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21
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Casnati A, Fontana M, Coruzzi G, Aresta BM, Corriero N, Maggi R, Maestri G, Motti E, Della Ca' N. Enhancing Reactivity and Selectivity of Aryl Bromides: A Complementary Approach to Dibenzo[
b,f
]azepine Derivatives. ChemCatChem 2018. [DOI: 10.1002/cctc.201800940] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Alessandra Casnati
- Department of Chemistry Life Sciences and Environmental Sustainability (SCVSA)University of Parma Parco Area delle Scienze 17/A Parma 43124 Italy
| | - Marco Fontana
- Department of Chemistry Life Sciences and Environmental Sustainability (SCVSA)University of Parma Parco Area delle Scienze 17/A Parma 43124 Italy
| | - Giovanni Coruzzi
- Department of Chemistry Life Sciences and Environmental Sustainability (SCVSA)University of Parma Parco Area delle Scienze 17/A Parma 43124 Italy
| | | | - Nicola Corriero
- Istituto di Cristallografia CNR Via Amendola 122/O Bari 70124 Italy
| | - Raimondo Maggi
- Department of Chemistry Life Sciences and Environmental Sustainability (SCVSA)University of Parma Parco Area delle Scienze 17/A Parma 43124 Italy
| | - Giovanni Maestri
- Department of Chemistry Life Sciences and Environmental Sustainability (SCVSA)University of Parma Parco Area delle Scienze 17/A Parma 43124 Italy
| | - Elena Motti
- Department of Chemistry Life Sciences and Environmental Sustainability (SCVSA)University of Parma Parco Area delle Scienze 17/A Parma 43124 Italy
| | - Nicola Della Ca'
- Department of Chemistry Life Sciences and Environmental Sustainability (SCVSA)University of Parma Parco Area delle Scienze 17/A Parma 43124 Italy
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22
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Naeimi H, Kiani F. Immobilized triazine bis[mercapto amine] complexes of Pd(0) anchored nickel ferrite as a nanocatalyst for C–C coupling reaction. J COORD CHEM 2018. [DOI: 10.1080/00958972.2018.1458229] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Hossein Naeimi
- Faculty of Chemistry, Department of Organic Chemistry, University of Kashan, Kashan, I.R. Iran
| | - Fatemeh Kiani
- Faculty of Chemistry, Department of Organic Chemistry, University of Kashan, Kashan, I.R. Iran
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23
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Ghosh T. Nickel-catalyzed regioselective access to dibenzo[c,f]oxocine framework via reductive Heck reaction. SYNTHETIC COMMUN 2018. [DOI: 10.1080/00397911.2018.1445865] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Tapas Ghosh
- Institute for Organic Chemistry, University of Würzburg, Würzburg, Germany
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24
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Movassagh B, Ranjbari S. Kryptofix 5 as an inexpensive and efficient ligand for the palladium-catalyzed Mizoroki-Heck reaction. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4224] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Barahman Movassagh
- Department of Chemistry; K.N. Toosi University of Technology; P.O. Box 16315-1618 Tehran Iran
| | - Shabnam Ranjbari
- Department of Chemistry; K.N. Toosi University of Technology; P.O. Box 16315-1618 Tehran Iran
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25
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Ghosh T. Regioselective access of alkylidendibenzo[c,f]oxocine framework via cyclocarbopalladation/cross-coupling cascade reactions and reductive Heck strategy. NEW J CHEM 2017. [DOI: 10.1039/c6nj03825e] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Palladium-catalyzed dual strategies of cascade cyclocarbopalladation/cross-coupling of alkynes and a reductive Heck reaction have been developed to construct dibenzo[c,f]oxocine frameworks with tri- and tetra-substituted exo-cyclic alkenes with high stereo- and regio-control.
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Affiliation(s)
- Tapas Ghosh
- Institute of Organic Chemistry
- University of Würzburg
- 97074 Würzburg
- Germany
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26
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Shibata T, Ito M, Inoue D, Kawasaki R, Stephen Kanyiva K. Cationic Au(I)-Catalyzed Cycloisomerization of N-(2-Alkynylphenyl)indolines for the Construction of Indolobenzazepine Skeleton. HETEROCYCLES 2017. [DOI: 10.3987/com-17-13793] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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27
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Ito M, Kawasaki R, Kanyiva KS, Shibata T. Construction of a Polycyclic Conjugated System Containing a Dibenzazepine Moiety by Cationic Gold(I)-Catalyzed Cycloisomerization. European J Org Chem 2016. [DOI: 10.1002/ejoc.201601147] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Mamoru Ito
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering; Waseda University; Shinjuku 169-8555 Tokyo Japan
| | - Ryosuke Kawasaki
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering; Waseda University; Shinjuku 169-8555 Tokyo Japan
| | - Kyalo Stephen Kanyiva
- International Center for Science and Engineering Programs (ICSEP); Waseda University; Shinjuku 169-8555 Tokyo Japan
| | - Takanori Shibata
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering; Waseda University; Shinjuku 169-8555 Tokyo Japan
- ACT-C; Japan Science and Technology Agency (JST); 4-1-8 Honcho Kawaguchi 332-0012 Saitama Japan
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28
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Krawczyk H, Wrzesiński M, Mielecki D, Szczeciński P, Grzesiuk E. Synthesis of derivatives of methoxydibenzo[ b, f ]oxepine in the presence of sodium azide. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.05.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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29
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Kundu P, Mondal A, Das B, Chowdhury C. A Straightforward Approach for the Stereoselective Synthesis of (E)-2-Aryl/vinylmethylidene-1,4-benzodiazepines and -1,4-benzodiazepin-5-ones through Palladium/Charcoal-Catalyzed Reactions. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500661] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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30
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Shahid Islam M, Ahmad S, Attu MR, Foerstering FH, Mahmun Hossain M. Concise Synthesis of 2-Arylpropanoic Acids and Study of Unprecedented Reduction of 3-Hydroxy-2-arylpropenoic Acid Ethyl Ester to 2-Arylpropenoic Acid Ethyl Ester by BH3⋅THF. Helv Chim Acta 2015. [DOI: 10.1002/hlca.201500062] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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31
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Xu X, Zhao L, Li Y, Soulé JF, Doucet H. IntermolecularversusIntramolecular Palladium-Catalyzed Direct Arylations between 1-(2-Bromobenzyl)imidazoles and Aryl Bromides. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500332] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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32
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Son KH, Min JY, Kim G. Benzazepine Ring Formation via an Intramolecular Heck Reaction: Synthetic Application to Chilenine. B KOREAN CHEM SOC 2014. [DOI: 10.5012/bkcs.2014.35.4.985] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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33
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Kotipalli T, Janreddy D, Kavala V, Kuo CW, Kuo TS, Chen ML, He CH, Yao CF. BF3·OEt2-mediated one pot synthesis of 10-indolyldibenzo[b,f]azepine derivatives via tandem ring expansion and C–C bond formation. RSC Adv 2014. [DOI: 10.1039/c4ra08723b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A simple and efficient one pot protocol was developed for the synthesis of new structurally diverse 10-indolyldibenzo[b,f]azepine derivatives.
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Affiliation(s)
| | - Donala Janreddy
- Department of Chemistry
- National Taiwan Normal University
- Taipei 116, Taiwan
| | | | - Chun-Wei Kuo
- Department of Chemistry
- National Taiwan Normal University
- Taipei 116, Taiwan
| | - Ting-Shen Kuo
- Department of Chemistry
- National Taiwan Normal University
- Taipei 116, Taiwan
| | - Mei-Ling Chen
- Department of Chemistry
- National Taiwan Normal University
- Taipei 116, Taiwan
| | - Chiu-Hui He
- Department of Chemistry
- National Taiwan Normal University
- Taipei 116, Taiwan
| | - Ching-Fa Yao
- Department of Chemistry
- National Taiwan Normal University
- Taipei 116, Taiwan
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34
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Veisi H, Sedrpoushan A, Mohammadi P, Faraji AR, Sajjadifar S. A new recyclable 1,4-bis(3-methylimidazolium-1-yl)butane ditribromide [bMImB]·(Br3)2 ionic liquid reagent for selective bromination of anilines or phenols and α-bromination of alkanones under mild conditions. RSC Adv 2014. [DOI: 10.1039/c4ra03006k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
1,4-Bis(3-methylimidazolium-1-yl)butane ditribromide [bMImB]·(Br3)2 has been synthesized and explored as a new efficient brominating agent.
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Affiliation(s)
- Hojat Veisi
- Department of Chemistry
- Payame Noor University(PNU)
- 19395-4697 Tehran, Iran
| | - Alireza Sedrpoushan
- Institute of Industrial Chemistry
- Iranian research Organization for Science and Technology
- Tehran, Iran
| | - Pourya Mohammadi
- Department of Chemistry
- Payame Noor University(PNU)
- 19395-4697 Tehran, Iran
| | - Ali Reza Faraji
- Faculty of chemistry
- Pharmaceutical Sciences Branch
- Islamic Azad University
- Tehran, Iran
| | - Sami Sajjadifar
- Department of Chemistry
- Payame Noor University(PNU)
- 19395-4697 Tehran, Iran
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35
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Bera K, Jalal S, Sarkar S, Jana U. FeCl3-catalyzed synthesis of functionally diverse dibenzo[b,f]oxepines and benzo[b]oxepines via alkyne–aldehyde metathesis. Org Biomol Chem 2014; 12:57-61. [DOI: 10.1039/c3ob41624k] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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36
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Pathak S, Kundu A, Pramanik A. Monobromomalononitrile: an efficient regioselective mono brominating agent towards active methylene compounds and enamines under mild conditions. RSC Adv 2014. [DOI: 10.1039/c3ra46687f] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The potential of monobromomalononitrile (MBM) as a convenient source of cationic bromine in organic bromination reaction has been explored.
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Affiliation(s)
- Sudipta Pathak
- Department of Chemistry
- University of Calcutta
- Kolkata-700 009, India
| | - Ashis Kundu
- Department of Chemistry
- University of Calcutta
- Kolkata-700 009, India
| | - Animesh Pramanik
- Department of Chemistry
- University of Calcutta
- Kolkata-700 009, India
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37
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New short strategy for the synthesis of the dibenz[b,f]oxepin scaffold. Molecules 2013; 18:14797-806. [PMID: 24352054 PMCID: PMC6270238 DOI: 10.3390/molecules181214797] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Revised: 11/26/2013] [Accepted: 11/26/2013] [Indexed: 11/16/2022] Open
Abstract
In this report a short and efficient synthesis of the dibenz[b,f]oxepin framework through intramolecular SNAr and McMurry reactions is described. The diaryl ethers required for the McMurry reaction have been obtained in good yields under microwave-assisted conditions of the reaction of salicylaldehydes with fluorobenzaldehydes without catalysts. Application of an intramolecular McMurry reaction to the synthesized diarylethers using TiCl4/Zn in THF gave the target dibenzo[b,f]oxepin system in 53%-55% yields.
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38
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Bharath Y, Thirupathi B, Ranjit G, Mohapatra DK. An Efficient Synthesis of Dibenzo[b,f]oxepins by Ring-Closing Metathesis. ASIAN J ORG CHEM 2013. [DOI: 10.1002/ajoc.201300141] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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39
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Pathak S, Pramanik A. Diastereoselective Synthesis of Isoindole-Fused Diazacyclooctaindenones from Spirochromenes through Domino Reactions with Aliphatic 1,2-Diamines. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300096] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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40
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Sun LL, Hu BL, Tang RY, Deng CL, Zhang XG. Copper-Catalyzed Tandem CC/CO Bond-Forming Reactions ofortho-Halo-β-chlorostyrenes with Ketones: Synthesis of 4-Trifluoromethylbenzoxepines. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201200784] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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41
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Jäger M, Görls H, Günther W, Schubert US. Pd-Catalyzed Ring Assembly by Vinylation and Intramolecular Heck Coupling: A Versatile Strategy Towards Functionalized Azadibenzocyclooctynes. Chemistry 2012; 19:2150-7. [DOI: 10.1002/chem.201202790] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2012] [Indexed: 11/09/2022]
Affiliation(s)
- Michael Jäger
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Jena Center for Soft Matter (JCSM), Friedrich-Schiller-University Jena, Humboldtstraße 10, 07743 Jena, Germany
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42
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Gao W, Lin G, Li Y, Tao X, Liu R, Sun L. An efficient access to the synthesis of novel 12-phenylbenzo[6,7]oxepino[3,4-b]quinolin-13(6H)-one derivatives. Beilstein J Org Chem 2012; 8:1849-57. [PMID: 23209522 PMCID: PMC3511022 DOI: 10.3762/bjoc.8.213] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2012] [Accepted: 09/20/2012] [Indexed: 11/24/2022] Open
Abstract
An efficient access to the tetracyclic-fused quinoline systems, 12-phenylbenzo[6,7]oxepino[3,4-b]quinolin-13(6H)-one derivatives 4a–l, is described, involving the intramolecular Friedel–Crafts acylation reaction of 2-(phenoxymethyl)-4-phenylquinoline-3-carboxylic acid derivatives 3a–l aided by the treatment with PPA (polyphosphoric acid) or Eaton’s reagent. The required starting compound (2) was obtained by Friedländer reaction of 2-aminobenzophenone (1) with 4-chloroethylacetoacetate by using CAN (cerium ammonium nitrate, 10 mol %) as catalyst at room temperature. The substrates 3a–l were prepared through one-pot reaction of ethyl 2-(chloromethyl)-4-phenylquinoline-3-carboxylate (2) and substituted phenols. Our developed strategy, involving a three-step route, offers easy access to tetracyclic-fused quinoline systems in short reaction times, and the products are obtained in moderate to good yields.
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Affiliation(s)
- Wentao Gao
- Institute of Superfine Chemicals, Bohai University, Jinzhou 121000, China
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43
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Zhang X, Yang Y, Liang Y. Palladium-catalyzed double N-arylation to synthesize multisubstituted dibenzoazepine derivatives. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.09.042] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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44
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Choi YL, Lim HS, Lim HJ, Heo JN. One-Pot Transition-Metal-Free Synthesis of Dibenzo[b,f]oxepins from 2-Halobenzaldehydes. Org Lett 2012; 14:5102-5. [DOI: 10.1021/ol302371s] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Young Lok Choi
- Medicinal Chemistry Research Center, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Daejeon 305-600, Korea, Department of Chemistry, Korea University, 145 Anam-ro, Seoul 105-600 Korea, and Graduate School of New Drug Discovery and Development, Chungnam National University, 99 Daehak-ro, Daejeon 305-764, Korea
| | - Hye Sun Lim
- Medicinal Chemistry Research Center, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Daejeon 305-600, Korea, Department of Chemistry, Korea University, 145 Anam-ro, Seoul 105-600 Korea, and Graduate School of New Drug Discovery and Development, Chungnam National University, 99 Daehak-ro, Daejeon 305-764, Korea
| | - Hwan Jung Lim
- Medicinal Chemistry Research Center, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Daejeon 305-600, Korea, Department of Chemistry, Korea University, 145 Anam-ro, Seoul 105-600 Korea, and Graduate School of New Drug Discovery and Development, Chungnam National University, 99 Daehak-ro, Daejeon 305-764, Korea
| | - Jung-Nyoung Heo
- Medicinal Chemistry Research Center, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Daejeon 305-600, Korea, Department of Chemistry, Korea University, 145 Anam-ro, Seoul 105-600 Korea, and Graduate School of New Drug Discovery and Development, Chungnam National University, 99 Daehak-ro, Daejeon 305-764, Korea
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45
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Rajeshkumar V, Chan F, Chuang S. Palladium‐Catalyzed and Hybrid Acids‐Assisted Synthesis of [60]Fulleroazepines in One Pot under Mild Conditions: Annulation of
N
‐Sulfonyl‐2‐aminobiaryls with [60]Fullerene through Sequential C‐H Bond Activation, C‐C and C‐N Bond Formation. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201200314] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Venkatachalam Rajeshkumar
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu 30010, Taiwan, R.O.C. Fax: (+886)‐35723764; phone: (+886)‐35731858
| | - Fu‐Wei Chan
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu 30010, Taiwan, R.O.C. Fax: (+886)‐35723764; phone: (+886)‐35731858
| | - Shih‐Ching Chuang
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu 30010, Taiwan, R.O.C. Fax: (+886)‐35723764; phone: (+886)‐35731858
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46
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LI YANG, LIN GUIHAI, GAO WENTAO. Synthesis of Polycyclic-fused Heterocycles Combining Both Quinoline Ring and Benzoxepine Framework in A Single Molecule. Polycycl Aromat Compd 2012. [DOI: 10.1080/10406638.2012.663450] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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47
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Wang W, Yang Q, Zhou R, Fu HY, Li RX, Chen H, Li XJ. Palladium nanoparticles generated from allylpalladium chloride in situ: A simple and highly efficient catalytic system for Mizoroki–Heck reactions. J Organomet Chem 2012. [DOI: 10.1016/j.jorganchem.2011.10.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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48
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Sharma A, Appukkuttan P, Van der Eycken E. Microwave-assisted synthesis of medium-sized heterocycles. Chem Commun (Camb) 2011; 48:1623-37. [PMID: 22031184 DOI: 10.1039/c1cc15238f] [Citation(s) in RCA: 119] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The development of new strategies for synthesis of medium-sized heterocycles has remained a highly attractive but challenging proposition. In the last few years, the application of microwave irradiation has greatly facilitated the construction of such heterocyclic ring systems through a myriad of different synthetic approaches. This feature article illustrates the progress made in the microwave-assisted synthesis of medium-sized heterocycles with an emphasis on examples describing the use of a dedicated microwave synthesizer.
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Affiliation(s)
- Abhishek Sharma
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, B-3001, Leuven, Belgium
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49
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Della Ca' N, Maestri G, Malacria M, Derat E, Catellani M. Palladium-Catalyzed Reaction of Aryl Iodides with ortho-Bromoanilines and Norbornene/Norbornadiene: Unexpected Formation of Dibenzoazepine Derivatives. Angew Chem Int Ed Engl 2011; 50:12257-61. [DOI: 10.1002/anie.201104363] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2011] [Revised: 08/24/2011] [Indexed: 11/12/2022]
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50
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Della Ca' N, Maestri G, Malacria M, Derat E, Catellani M. Palladium-Catalyzed Reaction of Aryl Iodides with ortho-Bromoanilines and Norbornene/Norbornadiene: Unexpected Formation of Dibenzoazepine Derivatives. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201104363] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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