1
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One-pot approach: Tandem consecutive Ugi-4CR/ACM-type reaction towards the synthesis of functionalised quinoline-2(1H)-one scaffolds. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.152889] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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2
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Prasad SS, Joshi DR, Lee JH, Kim I. One-pot access to 2-amino-3-arylbenzofurans: direct entry to polyheterocyclic chemical space. Org Biomol Chem 2020; 18:8119-8140. [PMID: 33016294 DOI: 10.1039/d0ob01715a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
As a means to make new benzofuran-embedded polycyclic structures, we established two efficient one-pot sequential coupling routes to 2-amino-3-arylbenzofurans and 2-amino-3-arylnaphtho[2,1-b]furans. Further ring formation (six- and seven-membered rings) with the resulting amine moiety at the C2 position of benzofurans was realized, leading to further expansion of benzofuran-based chemical space.
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Affiliation(s)
- Sure Siva Prasad
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon, 21983, Republic of Korea.
| | - Dirgha Raj Joshi
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon, 21983, Republic of Korea.
| | - Jeong Hwa Lee
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon, 21983, Republic of Korea.
| | - Ikyon Kim
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon, 21983, Republic of Korea.
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3
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Kim J, Cha H, Park M, Singh DK, Bae GH, Kim SH, Kim I. Expanding the chemical space: Discovery of new anticancer
3‐arylbenzofuran
derivatives. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.4043] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Jinhwang Kim
- College of Pharmacy and Yonsei Institute of Pharmaceutical SciencesYonsei University Incheon South Korea
| | - Hyeon‐Min Cha
- Graduate School of New Drug Discovery and DevelopmentChungnam National University Daejeon South Korea
| | - Mikyung Park
- Innovative Target Research Center, Therapeutics & Biotechnology DivisionKorea Research Institute of Chemical Technology Daejeon South Korea
| | - Dileep K. Singh
- College of Pharmacy and Yonsei Institute of Pharmaceutical SciencesYonsei University Incheon South Korea
| | - Gi H. Bae
- College of Pharmacy and Yonsei Institute of Pharmaceutical SciencesYonsei University Incheon South Korea
| | - Seong H. Kim
- Graduate School of New Drug Discovery and DevelopmentChungnam National University Daejeon South Korea
- Innovative Target Research Center, Therapeutics & Biotechnology DivisionKorea Research Institute of Chemical Technology Daejeon South Korea
| | - Ikyon Kim
- College of Pharmacy and Yonsei Institute of Pharmaceutical SciencesYonsei University Incheon South Korea
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4
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Das A, Sarkar S, Chakraborty B, Kar A, Jana U. Catalytic Alkyne/Alkene-Carbonyl Metathesis: Towards the Development of Green Organic Synthesis. CURRENT GREEN CHEMISTRY 2020. [DOI: 10.2174/2213346106666191105144019] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The construction of carbon-carbon bond through the metathesis reactions between carbonyls
and olefins or alkynes has attracted significant interest in organic chemistry due to its high atomeconomy
and efficiency. In this regard, carbonyl–alkyne metathesis is well developed and widely used
in organic synthesis for the atom-efficient construction of various carbocycles and heterocycles in the
presence of catalytic Lewis acids or Brønsted acids. On the other hand, alkene-carbonyl metathesis is
recently developed and has been a topic of great importance in the field of organic chemistry because
they possess attractive qualities involving metal-mediated, metal-free intramolecular, photochemical,
Lewis acid-mediated ring-closing metathesis, ring-opening metathesis and cross-metathesis. This review
covers most of the strategies of carbonyl–alkyne and carbonyl–olefin metathesis reactions in the
synthesis of complex molecules, natural products and pharmaceuticals as well as provides an overview
of exploration of the metathesis reactions with high atom-economy as well as environmentally and
ecologically benign reaction conditions.
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Affiliation(s)
- Aniruddha Das
- Department of Chemistry, Jadavpur University, 188 Raja S. C. Mallick Road, Kolkata–700032, India
| | - Soumen Sarkar
- Department of Chemistry, Balurghat College, Balurghat, West Bengal 733103, India
| | - Baitan Chakraborty
- Department of Chemistry, Jadavpur University, 188 Raja S. C. Mallick Road, Kolkata–700032, India
| | - Abhishek Kar
- Department of Chemistry, Jadavpur University, 188 Raja S. C. Mallick Road, Kolkata–700032, India
| | - Umasish Jana
- Department of Chemistry, Jadavpur University, 188 Raja S. C. Mallick Road, Kolkata–700032, India
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5
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Ma Z, Zhou M, Ma L, Zhang M. Synthesis of benzofurans from the cyclodehydration of α-phenoxy ketones mediated by Eaton’s reagent. JOURNAL OF CHEMICAL RESEARCH 2020. [DOI: 10.1177/1747519820907244] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Cyclodehydration of α-phenoxy ketones promoted by Eaton’s reagent (phosphorus pentoxide–methanesulfonic acid) is used to prepare 3-substituted or 2,3-disubstituted benzofurans with moderate to excellent yields under mild conditions. The method provides a facile access to benzofurans from readily available starting materials such as phenols and α-bromo ketones. The reaction is highly efficient, which is attributed to the good reactivity and fluidity of Eaton’s reagent. The reaction can be applied to prepare naphthofurans, furanocoumarins, benzothiophenes, and benzopyrans.
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Affiliation(s)
- Zhanwei Ma
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, P.R. China
| | - Min Zhou
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, P.R. China
| | - Lin Ma
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, P.R. China
| | - Min Zhang
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, P.R. China
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6
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Prasad SS, Singh DK, Kim I. One-Pot, Three-Component Approach to Diarylmethylphosphonates: A Direct Entry to Polycyclic Aromatic Systems. J Org Chem 2019; 84:6323-6336. [PMID: 30990320 DOI: 10.1021/acs.joc.9b00668] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A new type of three-component reaction was developed consisting of aldehydes, electron-rich (hetero)arenes, and trialkyl phosphite, which provided facile access to a wide range of diarylmethylphosphonates under mild reaction conditions. Simple one- or two-step synthetic manipulation of the resulting compounds enabled us to reach several polycyclic (hetero)aromatic systems efficiently.
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Affiliation(s)
- Sure Siva Prasad
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences , Yonsei University , 85 Songdogwahak-ro , Yeonsu-gu, Incheon 21983 , Republic of Korea
| | - Dileep Kumar Singh
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences , Yonsei University , 85 Songdogwahak-ro , Yeonsu-gu, Incheon 21983 , Republic of Korea
| | - Ikyon Kim
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences , Yonsei University , 85 Songdogwahak-ro , Yeonsu-gu, Incheon 21983 , Republic of Korea
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Singh DK, Jang K, Kim J, Lee J, Kim I. Intramolecular Electrophilic Cyclization Approach to 6-Substituted Naphtho[2,1- b]benzofurans: Novel Dual-State Emissive Fluorophores with Blue Emission. ACS COMBINATORIAL SCIENCE 2019; 21:408-416. [PMID: 30925043 DOI: 10.1021/acscombsci.9b00006] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A regiospecific synthesis of naphtho[2,1- b]benzofurans with a substituent at the C6 position was achieved via intramolecular 6-endo-dig electrophilic cyclization under acidic conditions to construct the central aromatic C ring. Screening of the synthesized compounds using a high-content imaging system enabled us to discover novel dual state emissive compounds 2{ 1,6}, 2{ 1,8}, and 2{ 4,3}, which are highly emissive with blue emission in their solid states as well as in solution states in most solvents. In addition, the compounds 2{ 4,3}, 2{ 4,12}, and 2{ 5,13} were found to be the most cell permeable in HeLa cells for live cell imaging with negligible phototoxicity.
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Affiliation(s)
- Dileep Kumar Singh
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon 21983, Republic of Korea
| | - Kyungkuk Jang
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Jinhwang Kim
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon 21983, Republic of Korea
| | - Jeeyeon Lee
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Ikyon Kim
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon 21983, Republic of Korea
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Watson RB, Schindler CS. Iron-Catalyzed Synthesis of Tetrahydronaphthalenes via 3,4-Dihydro-2H-pyran Intermediates. Org Lett 2018; 20:68-71. [PMID: 29261323 PMCID: PMC6149531 DOI: 10.1021/acs.orglett.7b03367] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The development of an iron(III)-catalyzed synthetic strategy toward functionalized tetrahydronaphthalenes is described. This approach is characterized by its operational simplicity and is distinct from currently available procedures that rely on [4 + 2]-cycloadditions. Our strategy takes advantage of the divergent reactivity observed for simple aryl ketone precursors to gain exclusive access to tetrahydronaphthalene products (23 examples). Detailed mechanistic investigations identified pyrans as reactive intermediates that afford the desired tetrahydronaphthalenes in high yields upon iron(III)-catalyzed Friedel-Crafts alkylation.
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Affiliation(s)
- Rebecca B. Watson
- University of Michigan, Department of Chemistry, Willard Henry Dow Laboratory, 930 North University Ave., Ann Arbor, MI 48109, US
| | - Corinna S. Schindler
- University of Michigan, Department of Chemistry, Willard Henry Dow Laboratory, 930 North University Ave., Ann Arbor, MI 48109, US
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Nayak M, Kang YK, Kim I. Altering the Cyclization Modes: Temperature-Dependent Intramolecular 7-Endo-Dig vs 6-Endo-Dig Electrophilic Ring Closures. Org Lett 2017; 19:1474-1477. [DOI: 10.1021/acs.orglett.7b00472] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Maloy Nayak
- College
of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University 85 Songdogwahak-ro, Yeonsu-gu, Incheon, 21983, Republic of Korea
| | - Young Kee Kang
- Department
of Chemistry, Chungbuk National University 1 Chungdae-ro, Seowon-gu, Cheongju, Chungbuk 28644, Republic of Korea
| | - Ikyon Kim
- College
of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University 85 Songdogwahak-ro, Yeonsu-gu, Incheon, 21983, Republic of Korea
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