1
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Roy S, Budhathoki S, Iqbal AD, Erickson AN, Ali MA, Alam MA. Domino Reaction Protocol to Synthesize Benzothiophene-Derived Chemical Entities as Potential Therapeutic Agents. J Org Chem 2024; 89:3781-3799. [PMID: 38408196 PMCID: PMC10947603 DOI: 10.1021/acs.joc.3c02646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
An efficient synthesis of 3-amino-2-formyl-functionalized benzothiophenes by a domino reaction protocol and their use to synthesize a library of novel scaffolds have been reported. Reactions of ketones and 1,3-diones with these amino aldehyde derivatives formed a series of benzothieno[3,2-b]pyridine and 3,4-dihydro-2H-benzothiopheno[3,2-b]quinolin-1-one, respectively. A plausible mechanism for the formation of fused pyridine derivatives by the Friedlander reaction has been elucidated by density functional theory (DFT) calculations. Furthermore, hydrazones were obtained by reacting the aldehyde functional group of benzothiophenes with different hydrazine derivatives. Preliminary screening of these compounds against several bacterial strains and cancer cell lines led to the discovery of several hit molecules. Hydrazone and benzothieno[3,2-b]pyridine derivatives are potent cytotoxic and antibacterial agents, respectively. One of the potent compounds effected ∼97% growth inhibition of the LOX IMVI cell line at 10 μM concentration.
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Affiliation(s)
- Subrata Roy
- Department of Chemistry and Physics, College of Sciences and Mathematics, Arkansas State University, Jonesboro, Arkansas 70401, United States
- Environmental Sciences Program, Arkansas State University, Jonesboro, Arkansas 72401, United States
| | - Shailesh Budhathoki
- Molecular Biosciences Program, Arkansas State University, Jonesboro, Arkansas 72401, United States
| | - Ahmed D Iqbal
- Department of Chemistry and Physics, College of Sciences and Mathematics, Arkansas State University, Jonesboro, Arkansas 70401, United States
| | - Alexander N Erickson
- Department of Chemistry, The University of Memphis, Memphis, Tennessee 38152, United States
| | - Mohamad Akbar Ali
- Department of Chemistry and Center for Catalysis and Separations, Khalifa University of Science and Technology, P.O. Box 127788 Abu Dhabi, United Arab Emirates
| | - Mohammad Abrar Alam
- Department of Chemistry and Physics, College of Sciences and Mathematics, Arkansas State University, Jonesboro, Arkansas 70401, United States
- Environmental Sciences Program, Arkansas State University, Jonesboro, Arkansas 72401, United States
- Molecular Biosciences Program, Arkansas State University, Jonesboro, Arkansas 72401, United States
- Arkansas Biosciences Institute, Arkansas State University, Jonesboro, Arkansas 72401, United States
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2
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Fu J, Li B, Wang X, Wang H, Deng M, Yang H, Lin B, Cheng M, Yang L, Liu Y. Collective Total Syntheses of Benzo[ c]phenanthridine Alkaloids via a Sequential Transition Metal-Catalyzed Pot-Economic Approach. Org Lett 2022; 24:8310-8315. [DOI: 10.1021/acs.orglett.2c03278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jiayue Fu
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education, Shenyang 110016, P. R. China
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
- Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Bingbing Li
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education, Shenyang 110016, P. R. China
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
- Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Xinxiu Wang
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education, Shenyang 110016, P. R. China
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
- Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - He Wang
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education, Shenyang 110016, P. R. China
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
- Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Minghui Deng
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education, Shenyang 110016, P. R. China
- Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Huali Yang
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education, Shenyang 110016, P. R. China
- Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Bin Lin
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education, Shenyang 110016, P. R. China
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
- Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Maosheng Cheng
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education, Shenyang 110016, P. R. China
- Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Lu Yang
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education, Shenyang 110016, P. R. China
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
- Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Yongxiang Liu
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education, Shenyang 110016, P. R. China
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
- Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
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3
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Luz EQ, Silvério GL, Seckler D, Lima DB, Santana FS, Barbosa RV, Montes D'Oca CR, Rampon DS. One‐Pot Synthesis of 3‐Halo‐2‐organochalcogenylbenzo[
b
]chalcogenophenes from 1‐(2,2‐Dibromovinyl)‐2‐organochalcogenylbenzenes. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202001586] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Eduardo Q. Luz
- Laboratory of Polymers and Catalysis (LaPoCa), Department of Chemistry Federal University of Paraná-UFPR P. O. Box 19061 Curitiba PR, 81531-980 Brazil
| | - Gabriel L. Silvério
- Laboratory of Polymers and Catalysis (LaPoCa), Department of Chemistry Federal University of Paraná-UFPR P. O. Box 19061 Curitiba PR, 81531-980 Brazil
| | - Diego Seckler
- Laboratory of Polymers and Catalysis (LaPoCa), Department of Chemistry Federal University of Paraná-UFPR P. O. Box 19061 Curitiba PR, 81531-980 Brazil
| | - David B. Lima
- Laboratory of Polymers and Catalysis (LaPoCa), Department of Chemistry Federal University of Paraná-UFPR P. O. Box 19061 Curitiba PR, 81531-980 Brazil
| | - Francielli S. Santana
- Department of Chemistry Federal University of Paraná-UFPR P. O. Box 19061 Curitiba PR, 81531-980 Brazil
| | - Ronilson V. Barbosa
- Laboratory of Polymers and Catalysis (LaPoCa), Department of Chemistry Federal University of Paraná-UFPR P. O. Box 19061 Curitiba PR, 81531-980 Brazil
| | - Caroline R. Montes D'Oca
- Laboratory of Polymers and Catalysis (LaPoCa), Department of Chemistry Federal University of Paraná-UFPR P. O. Box 19061 Curitiba PR, 81531-980 Brazil
| | - Daniel S. Rampon
- Laboratory of Polymers and Catalysis (LaPoCa), Department of Chemistry Federal University of Paraná-UFPR P. O. Box 19061 Curitiba PR, 81531-980 Brazil
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4
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Ejaz S, Zubair M, Rizwan K, Karakaya I, Rasheed T, Rasool N. An Updated Coverage on the Synthesis of Benzo[b]thiophenes via Transition-metalcatalyzed Reactions: A Review. CURR ORG CHEM 2021. [DOI: 10.2174/1385272824999201111204317] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The benzo[b]thiophene nucleus is ubiquitous in biologically and pharmaceutically
important compounds. These moieties are highly important in materials science. The synthesis
of benzothiophene as a privileged structure has readily become a subject of great interest
and actively pursued in recent years. This review focuses on facile and convenient methods of
synthesis of benzo[b]thiophene based molecules through different transition metals catalyzed
reactions.
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Affiliation(s)
- Saba Ejaz
- Department of Chemistry, Government College University, Faisalabad 38000, Pakistan
| | - Muhammad Zubair
- Department of Chemistry, Government College University, Faisalabad 38000,, Pakistan
| | - Komal Rizwan
- Department of Chemistry, Government College University, Faisalabad 38000,, Pakistan
| | - Idris Karakaya
- Department of Chemistry, College of Basic Sciences, Gebze Technical University, 41400 Gebze, Turkey
| | - Tahir Rasheed
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Nasir Rasool
- Department of Chemistry, Government College University, Faisalabad 38000,, Pakistan
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5
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Ishibashi F, Fukuda T, Zha S, Hashirano A, Hirao S, Iwao M. Concise synthesis and in vitro anticancer activity of benzo[g][1]benzopyrano[4,3-b]indol-6(13H)-ones (BBPIs), topoisomerase I inhibitors based on the marine alkaloid lamellarin. Biosci Biotechnol Biochem 2021; 85:181-191. [PMID: 33577663 DOI: 10.1093/bbb/zbaa028] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Accepted: 09/25/2020] [Indexed: 11/12/2022]
Abstract
Benzo[g][1]benzopyrano[4,3-b]indol-6(13H)-ones (BBPIs) are potent anticancer compounds having unique BBPIs ring system designed on the basis of the marine natural product lamellarin D. In this study, we describe an alternative synthesis of a 2-demethoxy series of BBPIs, employing van Leusen pyrrole synthesis and an intramolecular Heck reaction as the key reactions. Cytotoxicity of the derivatives against several cancer and normal cell lines is reported.
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Affiliation(s)
- Fumito Ishibashi
- Graduate School of Fisheries and Environmental Sciences, Nagasaki University, Nagasaki, Japan
| | - Tsutomu Fukuda
- Environmental Protection Center, Nagasaki University, Nagasaki, Japan
| | - Shijiao Zha
- Graduate School of Fisheries and Environmental Sciences, Nagasaki University, Nagasaki, Japan
| | - Aya Hashirano
- Graduate School of Fisheries and Environmental Sciences, Nagasaki University, Nagasaki, Japan
| | - Shotaro Hirao
- Faculty of Science and Technology, Oita University, Dannoharu, Japan
| | - Masatomo Iwao
- Graduate School of Engineering, Nagasaki University, Nagasaki, Japan
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6
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Halder A, Maiti D, De Sarkar S. Mechanochemical Synthesis of Functionalized Quinolines by Iodine Mediated Oxidative Annulation. Chem Asian J 2020; 15:577-580. [PMID: 32011806 DOI: 10.1002/asia.201901758] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 01/21/2020] [Indexed: 11/07/2022]
Abstract
An iodine-mediated environmentally benign synthesis of multi-substituted quinoline derivatives is developed using a solvent-free mechanochemical process. Appropriately designed and easily accessible protecting group-free aniline derivatives were used for the oxidative annulation reaction, and a series of quinoline derivatives with variable functionalities were synthesized up to 89 % isolated yield. Importantly, the activator iodine remains in the quinoline molecule and promotes further functionalizations. The present methodology is beneficial with regard to operational simplicity and mild reaction conditions.
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Affiliation(s)
- Atreyee Halder
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, West Bengal, India
| | - Debabrata Maiti
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, West Bengal, India
| | - Suman De Sarkar
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, West Bengal, India
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7
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Gattaiah D, Reddy AS, Khan SA, Swamy KK. Reactions of alkynes- copper-catalyzed cyclization of functionalized alkynes with elemental sulfur/selenium to form oxathiines/oxaselenines. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.03.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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8
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Khan T, Yaragorla S. Iodocyclization of Propargyl Alcohols: Highly Facile Approach to Hetero/Carbocyclic Iodides. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900474] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Tabassum Khan
- School of Chemistry; University of Hyderabad; P.O.Central Universit; 500046 Gachibowli Hyderabad India
| | - Srinivasarao Yaragorla
- School of Chemistry; University of Hyderabad; P.O.Central Universit; 500046 Gachibowli Hyderabad India
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9
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Fukuda T, Nanjo Y, Fujimoto M, Yoshida K, Natsui Y, Ishibashi F, Okazaki F, To H, Iwao M. Lamellarin-inspired potent topoisomerase I inhibitors with the unprecedented benzo[g][1]benzopyrano[4,3-b]indol-6(13H)-one scaffold. Bioorg Med Chem 2019; 27:265-277. [DOI: 10.1016/j.bmc.2018.11.037] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 11/26/2018] [Accepted: 11/27/2018] [Indexed: 10/27/2022]
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10
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Fukuda T, Matsuoka F, Matsuo Y, Yoshioka N, Onodera G, Kimura M, Ishibashi F, Iwao M. Synthesis and Evaluation of Topoisomerase I Inhibitors Possessing the 5,13-Dihydro-6H-benzo[6,7]indolo[3,2-c]quinolin-6-one Scaffold. HETEROCYCLES 2019. [DOI: 10.3987/com-18-s(f)70] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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11
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Yi W, Liu QY, Fang XX, Lou SC, Liu GQ. Preparation of oxazolines and oxazoles via a PhI(OAc) 2-promoted cyclization of N-propargylamides. Org Biomol Chem 2018; 16:7012-7018. [PMID: 30232498 DOI: 10.1039/c8ob01474d] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A metal-free cyclization of N-propargylamides for the synthesis of various oxazolines and oxazoles via a 5-exo-dig process is presented. Using (diacetoxyiodo)benzene (PIDA) as a reaction promoter and lithium iodide (LiI) as an iodine source, intramolecular iodooxygenation of N-propargylamides proceeded readily, leading to the corresponding (E)-5-iodomethylene-2-oxazolines in good to excellent isolated yields. In addition, using the PhI(OAc)2/LiI system, N-propargylamides can be converted to the corresponding oxazole-5-carbaldehydes in the presence of oxygen under visible light irradiation. The resulting products can be further converted into various oxazoline and oxazole derivatives after simple derivatizations, and this method ultimately offers an efficient route to a variety of biologically active structures.
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Affiliation(s)
- Wei Yi
- College of Pharmacy, Nantong University, 19 Qixiu Road, Nantong 226001, People's Republic of China.
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12
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Casola KK, Gomes MR, Back DF, Zeni G. Electrophilic Cyclization Involving Carbon-Selenium/Carbon-Halide Bond Formation: Synthesis of 3-Substituted Selenophenes. J Org Chem 2018; 83:6706-6718. [PMID: 29847130 DOI: 10.1021/acs.joc.8b01136] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The butylselanyl propargyl alcohols reacted with iodine to afford 3-iodoselenophenes. The change of nucleophile position from propargyl to homopropargyl was crucial for the aromatization and formation of selenophene rings. The experiments revealed that bromine and N-bromosuccinimide were not able to cyclize the butylselanyl propargyl alcohols; however, when the bromine source was copper(II) bromide the corresponding 3-bromoselenophenes were obtained in good yields. In addition, the reaction of butylselanyl propargyl alcohols with diorganyl diselenides catalyzed by copper(I) iodide gave the 3-(organoselanyl)selenophenes. The reaction took place with aromatic rings substituted by either electron-donating or -withdrawing groups in the alkynes and propargyl positions. The steric effects of substituents were dominant in determining the yields, whereas electronic effects had only a minor influence. Furthermore, by monitoring the reaction by 1H NMR, we were able to identify the key intermediate, which supported the elaboration of a proposed reaction mechanism. The 3-iodoselenophenes prepared allowed the synthesis of multifunctional selenophenes via application in metal-catalyzed coupling reactions, such as Sonogashira, Ullmann and Suzuki type reactions.
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13
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N-Halo succinimide-promoted one-pot three-component electrophilic cyclization: Facile access to dihalogenated heterocycles under mild conditions. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.09.053] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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14
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Liu Y, Wang B, Qiao X, Tung CH, Wang Y. Iodine/Visible Light Photocatalysis for Activation of Alkynes for Electrophilic Cyclization Reactions. ACS Catal 2017. [DOI: 10.1021/acscatal.7b00799] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Yuliang Liu
- Key Lab of Colloid and Interface
Science of the Education Ministry, Department of Chemistry and Chemical
Engineering, Shandong University, Ji’Nan 250100, People’s Republic of China
| | - Bin Wang
- Key Lab of Colloid and Interface
Science of the Education Ministry, Department of Chemistry and Chemical
Engineering, Shandong University, Ji’Nan 250100, People’s Republic of China
| | - Xiaofeng Qiao
- Key Lab of Colloid and Interface
Science of the Education Ministry, Department of Chemistry and Chemical
Engineering, Shandong University, Ji’Nan 250100, People’s Republic of China
| | - Chen-Ho Tung
- Key Lab of Colloid and Interface
Science of the Education Ministry, Department of Chemistry and Chemical
Engineering, Shandong University, Ji’Nan 250100, People’s Republic of China
| | - Yifeng Wang
- Key Lab of Colloid and Interface
Science of the Education Ministry, Department of Chemistry and Chemical
Engineering, Shandong University, Ji’Nan 250100, People’s Republic of China
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15
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Raji Reddy C, Rani Valleti R, Sathish P. [4 + 2] Benzannulation of 3-Alkenylpyrroles/Thiophenes with Propargylic Alcohols: Access to Substituted Indoles, Benzothiophenes, and Aza[5]helicenes. J Org Chem 2017; 82:2345-2354. [DOI: 10.1021/acs.joc.6b02637] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Chada Raji Reddy
- Division of Natural Products Chemistry, CSIR-Indian Institute of Chemical Technology Hyderabad 500607, India
- Academy of Scientific and Innovative Research, New Delhi, India
| | - Reddi Rani Valleti
- Division of Natural Products Chemistry, CSIR-Indian Institute of Chemical Technology Hyderabad 500607, India
| | - Puppala Sathish
- Division of Natural Products Chemistry, CSIR-Indian Institute of Chemical Technology Hyderabad 500607, India
- Academy of Scientific and Innovative Research, New Delhi, India
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16
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Wang Z, Zhong J, Zheng C, Fan R. Iodine(iii)-induced regioselective carbocyclization of terminal alkynes: a facile approach to prepare 1,1-diiodomethylene substituted cyclic compounds. Org Chem Front 2017. [DOI: 10.1039/c6qo00822d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An iodine(iii)-induced regioselective carbocyclization of functionally substituted terminal alkynes to afford 1,1-diiodomethylene substituted cyclic compounds is reported.
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Affiliation(s)
- Zeyu Wang
- Department of Chemistry
- Fudan University
- Shanghai 200433
- China
| | - Jiang Zhong
- Department of Anesthesiology
- Jinshan Hospital Affiliated to Fudan University
- Shanghai 201508
- China
| | - Chen Zheng
- Department of Chemistry
- Fudan University
- Shanghai 200433
- China
| | - Renhua Fan
- Department of Chemistry
- Fudan University
- Shanghai 200433
- China
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17
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Neto JSS, Iglesias BA, Back DF, Zeni G. Iron-Promoted Tandem Cyclization of 1,3-Diynyl Chalcogen Derivatives with Diorganyl Dichalcogenides for the Synthesis of Benzo[b]furan-Fused Selenophenes. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600759] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- José S. S. Neto
- Laboratório de Síntese, Reatividade, Avaliação Farmacológica e Toxicológica de Organocalcogênios CCNE; UFSM; Santa Maria Rio Grande do Sul Brazil 97105-900
| | - Bernardo A. Iglesias
- Laboratório de Materiais Inorgânicos, Departamento de Química; UFSM; Santa Maria Rio Grande do Sul Brazil 97105-900
| | - Davi F. Back
- Laboratório de Materiais Inorgânicos, Departamento de Química; UFSM; Santa Maria Rio Grande do Sul Brazil 97105-900
| | - Gilson Zeni
- Laboratório de Síntese, Reatividade, Avaliação Farmacológica e Toxicológica de Organocalcogênios CCNE; UFSM; Santa Maria Rio Grande do Sul Brazil 97105-900
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18
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Wang J, Zhu HT, Chen S, Xia Y, Jin DP, Qiu YF, Li YX, Liang YM. Electrophilic Cyclization of Aryl Propargylic Alcohols: Synthesis of Dihalogenated 6,9-Dihydropyrido[1,2-a]indoles via a Cascade Iodocyclization. J Org Chem 2016; 81:10975-10986. [DOI: 10.1021/acs.joc.6b02013] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Jia Wang
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Hai-Tao Zhu
- Shannxi
Key Laboratory of Phytochemistry, Baoji University of Arts and Sciences, Baoji 721013, People’s Republic of China
| | - Si Chen
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Yu Xia
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Dong-Po Jin
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Yi-Feng Qiu
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Ying-Xiu Li
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Yong-Min Liang
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, People’s Republic of China
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19
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Saunthwal RK, Danodia AK, Patel M, Kumar S, Verma AK. Regioselective 5-endo-dig
Electrophilic Iodocyclization of Enediynes: A Convenient Route to Iodo-substituted Indenes and Cyclopenta-Fused Arenes. Chem Asian J 2016; 11:3001-3007. [DOI: 10.1002/asia.201601085] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Indexed: 12/25/2022]
Affiliation(s)
| | | | - Monika Patel
- Department of Chemistry; University of Delhi; Delhi- 110007 India
| | - Sushil Kumar
- Department of Chemistry; University of Delhi; Delhi- 110007 India
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20
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Zang H, Sun JG, Dong X, Li P, Zhang B. Preparation of Benzothiophenes and Benzoselenophenes from Arylamines and Alkynes via
Radical Cascade Reactions. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201501102] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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21
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Wu B, Yoshikai N. Recent developments in synthetic methods for benzo[b]heteroles. Org Biomol Chem 2016; 14:5402-16. [PMID: 26892101 DOI: 10.1039/c6ob00219f] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Benzo[b]heteroles containing heteroatoms other than nitrogen and oxygen have received considerable attention for their potential applications in materials science. This poses an increasing demand for efficient, selective, and broad-scope methods for their synthesis. This review article summarizes the recent developments in synthetic methods and approaches to access representative members of the benzoheterole family.
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Affiliation(s)
- Bin Wu
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore.
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22
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Aggarwal T, Kumar S, Verma AK. Iodine-mediated synthesis of heterocycles via electrophilic cyclization of alkynes. Org Biomol Chem 2016; 14:7639-53. [DOI: 10.1039/c6ob01054g] [Citation(s) in RCA: 96] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Syntheses of heterocyclesvia5-exoor 6-endo-digiodocyclizations from alkynes.
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Affiliation(s)
- Trapti Aggarwal
- Synthetic Organic Chemistry Research Laboratory
- Department of Chemistry
- University of Delhi
- Delhi
- India
| | - Sonu Kumar
- Synthetic Organic Chemistry Research Laboratory
- Department of Chemistry
- University of Delhi
- Delhi
- India
| | - Akhilesh K. Verma
- Synthetic Organic Chemistry Research Laboratory
- Department of Chemistry
- University of Delhi
- Delhi
- India
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23
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Kesharwani T, Kornman CT, Tonnaer AL, Royappa AD. Green synthesis of benzo[b]thiophenes via iron(III) mediated 5-endo-dig iodocyclization of 2-alkynylthioanisoles. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2015.12.037] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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24
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Roehrs JA, Pistoia RP, Back DF, Zeni G. Diorganyl Dichalcogenides-Promoted Nucleophilic Closure of 1,4-Diyn-3-ols: Synthesis of 2-Benzoyl Chalcogenophenes. J Org Chem 2015; 80:12470-81. [PMID: 26561717 DOI: 10.1021/acs.joc.5b02334] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We report here the preparation of chalcogenophene derivatives via cyclization reactions of diynols promoted by diorganyl dichalcogenides and a halogen source. Different chalcogenophenes, such as 4-halo-selenophenes, 4-butylselenyl-selenophenes, halo-thiophenes, and 4-methylthio-thiophenes, were selectively prepared in good yields from the same starting materials. The results revealed that the halogen source had a significant effect on the proportion of 4-bromo-selenophenes and 4-butylselenyl-selenophenes. The best yields of 4-iodo-selenophenes were obtained with iodine as a halogen source, while the use of NBS gave exclusively the 4-butylselenyl-selenophenes. The experiments also revealed that the cyclization reaction to form 4-halo-thiophene derivatives can also be controlled changing the ratios of reagents. The 4-iodo-thiophenes were exclusively obtained by using dimethyl disulfide (2.0 equiv) and iodine (1.5 equiv), while the 4-bromo-thiophenes were obtained when the reaction was carried out with a 1.5 molar ratio of dimethyl disulfide and a halogen source. In addition, the reaction of diynols with an excess of dimethyl disulfide in the presence of NBS gave the 4-methylthio-thiophenes as sole products. We also studied the application of chalcogenophenes obtained as starting materials in the Suzuki, Sonogashira, and Ullmann cross-coupling reactions.
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Affiliation(s)
- Juliano A Roehrs
- Laboratório de Síntese, Reatividade, Avaliação Farmacológica e Toxicológica de Organocalcogênios and ‡Laboratório de Materiais Inorgânicos, CCNE, Universidade Federal de Santa Maria , Santa Maria, Rio Grande do Sul 97105-900, Brazil
| | - Renan P Pistoia
- Laboratório de Síntese, Reatividade, Avaliação Farmacológica e Toxicológica de Organocalcogênios and ‡Laboratório de Materiais Inorgânicos, CCNE, Universidade Federal de Santa Maria , Santa Maria, Rio Grande do Sul 97105-900, Brazil
| | - Davi F Back
- Laboratório de Síntese, Reatividade, Avaliação Farmacológica e Toxicológica de Organocalcogênios and ‡Laboratório de Materiais Inorgânicos, CCNE, Universidade Federal de Santa Maria , Santa Maria, Rio Grande do Sul 97105-900, Brazil
| | - Gilson Zeni
- Laboratório de Síntese, Reatividade, Avaliação Farmacológica e Toxicológica de Organocalcogênios and ‡Laboratório de Materiais Inorgânicos, CCNE, Universidade Federal de Santa Maria , Santa Maria, Rio Grande do Sul 97105-900, Brazil
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25
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Pistoia RP, Roehrs JA, Back DF, Zeni G. Synthesis of 2-AcylselenophenesviaIodine-Promoted Nucleophilic Cyclization of [2-(Butylselanyl)phenyl]-propynols. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500569] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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26
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Acharya A, Kumar SV, Ila H. Diversity-Oriented Synthesis of Substituted Benzo[b]thiophenes and Their Hetero-Fused Analogues through Palladium-Catalyzed Oxidative CH Functionalization/Intramolecular Arylthiolation. Chemistry 2015; 21:17116-25. [DOI: 10.1002/chem.201501828] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2015] [Indexed: 01/03/2023]
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27
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Volpe R, Aurelio L, Gillin MG, Krenske EH, Flynn BL. Mapping the Interactions of I2, I., I−, and I+with Alkynes and Their Roles in Iodocyclizations. Chemistry 2015; 21:10191-9. [DOI: 10.1002/chem.201500384] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Indexed: 01/24/2023]
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28
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Tang Y, Han R, Lv M, Chen Y, Yang P. Tandem synthesis of pyrroloisoquinolines through 5-endo iodolactamization, oxidative functionalization and α-amidoalkylation reaction. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.04.057] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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29
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Bilheri FN, Stein AL, Zeni G. Synthesis of ChalcogenophenesviaCyclization of 1,3-Diynes Promoted by Iron(III) Chloride and Dialkyl Dichalcogenides. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201401159] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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30
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Li C, Liu N, Qi QR, Chen Y, He L. Synthesis of 5-Iodo-4H-1,3-oxazine-4-ones Through a [3+3] Reaction of Amides and Propiolates Induced by N-Iodosuccinimide (NIS) and Cu(CF3SO3)2. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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31
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Eberhart AJ, Shrives HJ, Álvarez E, Carrër A, Zhang Y, Procter DJ. Sulfoxide-Directed Metal-Free ortho-Propargylation of Aromatics and Heteroaromatics. Chemistry 2015; 21:7428-34. [PMID: 25752800 PMCID: PMC4524421 DOI: 10.1002/chem.201406424] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Indexed: 11/24/2022]
Abstract
A sulfoxide-directed, metal-free ortho-propargylation of aromatics and heteroaromatics exploits intermolecular delivery of a propargyl nucleophile to sulfur followed by an intramolecular relay to carbon. The operationally simple cross-coupling procedure is general, regiospecific with regard to the propargyl nucleophile, and shows complete selectivity for products of ortho-propargylation over allenylation. The use of secondary propargyl silanes allows metal-free ortho-coupling to form carbon–carbon bonds between aromatic and heteroaromatic rings and secondary propargylic centres. The ‘safety-catch’ nature of the sulfoxide directing group is illustrated in a selective, iterative double cross-coupling process. The products of propargylation are versatile intermediates and they have been readily converted into substituted benzothiophenes.
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Affiliation(s)
- Andrew J Eberhart
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL (UK), Fax: (+44) 161-275-4939 http://people.man.ac.uk/∼mbdssdp2/
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32
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33
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Acharya A, Vijay Kumar S, Saraiah B, Ila H. One-Pot Synthesis of Functionalized Benzo[b]thiophenes and Their Hetero-Fused Analogues via Intramolecular Copper-Catalyzed S-Arylation of In Situ Generated Enethiolates. J Org Chem 2015; 80:2884-92. [DOI: 10.1021/acs.joc.5b00032] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Anand Acharya
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore 560064, India
| | - S. Vijay Kumar
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore 560064, India
| | - B. Saraiah
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore 560064, India
| | - H. Ila
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore 560064, India
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34
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Ramulu BJ, Nagaraju A, Chowdhury S, Koley S, Singh MS. Metal-Free Reagent Dependent SS and CC Homocoupling of α-Enolic Dithioesters at Room Temperature: Direct Access to Fully Substituted Symmetrical ThiophenesviaChemoselective Paal-Knorr Approach. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201400828] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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35
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Bagley MC, Dwyer JE, Molina MDB, Rand AW, Rand HL, Tomkinson NCO. Microwave-assisted synthesis of 3-aminobenzo[b]thiophene scaffolds for the preparation of kinase inhibitors. Org Biomol Chem 2015; 13:6814-24. [DOI: 10.1039/c5ob00819k] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Microwave-assisted synthesis of 3-aminobenzo[b]thiophenes has been applied to 3 kinase inhibitor scaffolds.
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Affiliation(s)
- Mark C. Bagley
- Department of Chemistry
- School of Life Sciences
- University of Sussex
- Brighton, East Sussex
- UK
| | - Jessica E. Dwyer
- Department of Chemistry
- School of Life Sciences
- University of Sussex
- Brighton, East Sussex
- UK
| | | | - Alexander W. Rand
- Department of Chemistry
- School of Life Sciences
- University of Sussex
- Brighton, East Sussex
- UK
| | - Hayley L. Rand
- Department of Chemistry
- School of Life Sciences
- University of Sussex
- Brighton, East Sussex
- UK
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36
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Kesharwani T, Craig J, Del Rosario C, Shavnore R, Kornman C. Synthesis of 3-iodobenzo[b]thiophenes via iodocyclization/etherification reaction sequence. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.10.064] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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37
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Brookes PA, Barrett AGM. Iodoaromatization Reactions of Enyne–Dioxinones: Syntheses of 4H-1,3-Benzodioxin-4-ones, Masked Pentasubstituted Arenes. J Org Chem 2014; 79:8706-14. [DOI: 10.1021/jo5015068] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Paul A. Brookes
- Department of Chemistry, Imperial College London, London SW7 2AZ, England
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38
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Kinfe HH, Makolo FL, Adokoh CK. Regiospecific Synthesis of 2-Halo-3-(2′-glucalyl)benzo[b]thiophenes. J Org Chem 2014; 79:7718-22. [DOI: 10.1021/jo5012762] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Henok H. Kinfe
- Department of Chemistry, University of Johannesburg, P.O. Box 524, Auckland Park 2006, Republic of South Africa
| | - Felix L. Makolo
- Department of Chemistry, University of Johannesburg, P.O. Box 524, Auckland Park 2006, Republic of South Africa
| | - Christian K. Adokoh
- Department of Chemistry, University of Johannesburg, P.O. Box 524, Auckland Park 2006, Republic of South Africa
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39
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Aurelio L, Volpe R, Halim R, Scammells PJ, Flynn BL. Synthesis of Thieno-Fused Heterocycles through Reiterative Iodocyclization. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400072] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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40
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Matsumoto S, Takada D, Kageyama H, Akazome M. Formation of benzo[c]thiophen-1-aminium iodide by the reaction of o-alkynylbenzothioamide with iodine. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2013.12.094] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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41
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Regioselective synthesis of pyrano[3,2-f]quinoline and phenanthroline derivatives using molecular iodine. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.07.163] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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42
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Monleón A, Blay G, Domingo LR, Muñoz MC, Pedro JR. Synthesis of Densely Functionalised 5-Halogen-1,3-oxazin-2-ones by Halogen-Mediated Regioselective Cyclisation ofN-Cbz-Protected Propargylic Amines: A Combined Experimental and Theoretical Study. Chemistry 2013; 19:14852-60. [DOI: 10.1002/chem.201302089] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2013] [Indexed: 11/07/2022]
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43
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Sashida H, Kaname M, Minoura M. Studies on chalcogen-containing heterocycles. Part 38: Regio- and stereoselective tandem addition–iodocyclization of 2-ethynylphenyl isothiocyanates with N- and O-nucleophiles affording 4-(iodoalkylidene)benzo[d][1,3]thiazines. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.05.069] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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44
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Kim S, Dahal N, Kesharwani T. Environmentally benign process for the synthesis of 2,3-disubstituted benzo[b]thiophenes using electrophilic cyclization. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.05.139] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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45
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A convenient synthesis of benzo[b]chalcogenophenes from 4-(2-chloro-5-nitrophenyl)-1,2,3-chalcogenadiazoles. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.04.077] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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46
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Halim R, Aurelio L, Scammells PJ, Flynn BL. Scaffold-divergent synthesis of ring-fused indoles, quinolines, and quinolones via iodonium-induced reaction cascades. J Org Chem 2013; 78:4708-18. [PMID: 23659428 DOI: 10.1021/jo400125p] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
N-(2-Iodophenyl)imines A are readily formed from Schiff's base condensation of 2-iodoanilines with carbonyls and ketals. These imines provide useful substrates in scaffold-divergent synthesis through the attachment of an alkyne (Songashira coupling or acyl substitution of a Weinreb amide) followed by an iodonium-induced reaction cascade to give ring-fused indoles B, quinolines C, or quinolones D depending on the reaction conditions employed.
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Affiliation(s)
- Rosliana Halim
- Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia
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47
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Petrov ML, Androsov DA. 4-(2-R-Aryl)-1,2,3-chalcogenadiazoles in the synthesis of fused heterocycles. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2013. [DOI: 10.1134/s1070428013040015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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48
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Tang Y, Lv M, Liu X, Feng H, Liu L. Synthesis of β-Halo-pyrrolidinones through a Tandem Sequence of 5-Endo Halolactamization and C–H Oxidative Functionalization. Org Lett 2013; 15:1382-5. [DOI: 10.1021/ol400208f] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Yu Tang
- Tianjin Key Laboratory for Modern Drug Delivery & High Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Mingcan Lv
- Tianjin Key Laboratory for Modern Drug Delivery & High Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Xiaofan Liu
- Tianjin Key Laboratory for Modern Drug Delivery & High Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Hejing Feng
- Tianjin Key Laboratory for Modern Drug Delivery & High Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Liwei Liu
- Tianjin Key Laboratory for Modern Drug Delivery & High Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, P. R. China
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49
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Okitsu T, Yumitate S, Sato K, In Y, Wada A. Substituent Effect of Bis(pyridines)iodonium Complexes as Iodinating Reagents: Control of the Iodocyclization/Oxidation Process. Chemistry 2013; 19:4992-6. [DOI: 10.1002/chem.201204423] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2012] [Revised: 01/28/2013] [Indexed: 11/06/2022]
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50
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Eberhart AJ, Procter DJ. Nucleophilicortho-Propargylation of Aryl Sulfoxides: An Interrupted Pummerer/Allenyl Thio-Claisen Rearrangement Sequence. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201300223] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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