1
|
Khan S, Baire B. The Vicinal-Diiodination of the HDDA-Benzynes by N-Iodo- succinimide (NIS) Through a Radical Pathway. Chemistry 2025:e202500185. [PMID: 40320750 DOI: 10.1002/chem.202500185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2025] [Revised: 04/16/2025] [Accepted: 05/04/2025] [Indexed: 05/14/2025]
Abstract
The 1,2-diradical reactivity of the HDDA-benzynes (thermal) has not been explored well in comparison to their ionic reactivity. Accordingly, the radical trapping reactions of these reactive intermediates are very scarce in literature. Herein, we report the iodine-radical trapping reaction of the HDDA-benzynes for the construction of structurally divergent vicinal-diiodo arenes. The N-iodosuccinimide (NIS) has been employed as the source of radical iodine under thermal heating conditions. The existence of the arene-radical intermediates and the radical mechanism has been supported by the EPR spectral analysis of the reaction mixture. Several fruitful control experiments suggested that the 4-iodination (mono-) of the HDDA-benzynes is faster than the 5-iodiniation. The process is general in terms of substituents on the diynes as well as the nature of the tethering units. To the best of our knowledge, this is the first report on the vicinal-diiodination as well as radical diiodination of HDDA-benzynes.
Collapse
Affiliation(s)
- Siddique Khan
- Department of Chemistry Institution, Indian Institute of Technology Madras, Chennai, Tamilnadu, 600036, India
| | - Beeraiah Baire
- Department of Chemistry Institution, Indian Institute of Technology Madras, Chennai, Tamilnadu, 600036, India
| |
Collapse
|
2
|
Kim N, Choi M, Suh SE, Chenoweth DM. Aryne Chemistry: Generation Methods and Reactions Incorporating Multiple Arynes. Chem Rev 2024; 124:11435-11522. [PMID: 39383091 DOI: 10.1021/acs.chemrev.4c00296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/11/2024]
Abstract
Arynes hold significance for the efficient fusion of (hetero) arenes with diverse substrates, advancing the construction of complex molecular frameworks. Employing multiple equivalents of arynes is particularly effective in the rapid formation of polycyclic cores found in optoelectronic materials and bioactive compounds. However, the inherent reactivity of arynes often leads to side reactions, yielding unanticipated products and underlining the importance of a detailed investigation into the use of multiple arynes to fine-tune their reactivity. This review centers on methodologies and syntheses in organic reactions involving multiple arynes, categorizing based on mechanisms like cycloadditions, σ-bond insertions, nucleophilic additions, and ene reactions, and discusses aryne polymerization. The categorization based on these mechanisms includes two primary approaches: the first entails multiple aryne engagement within a single step while the second approach involves using a single equivalent of aryne sequentially across multiple steps, with both requiring strict reactivity control to ensure precise aryne participation in each respective step. Additionally, the review provides an in-depth analysis of the selection of aryne precursors, organized chronologically and by activation strategy, offering a comprehensive background that supports the main theme of multiple aryne utilization. The expectation remains that this comprehensive review will be invaluable in designing advanced syntheses engaging multiple arynes.
Collapse
Affiliation(s)
- Nayoung Kim
- Ajou Energy Science Research Center, Ajou University, Suwon 16499, Republic of Korea
| | - Myungsoo Choi
- Ajou Energy Science Research Center, Ajou University, Suwon 16499, Republic of Korea
| | - Sung-Eun Suh
- Department of Chemistry, Ajou University, Suwon 16499, Republic of Korea
| | - David M Chenoweth
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| |
Collapse
|
3
|
Fluegel LL, Hoye TR. Hexadehydro-Diels-Alder Reaction: Benzyne Generation via Cycloisomerization of Tethered Triynes. Chem Rev 2021; 121:2413-2444. [PMID: 33492939 PMCID: PMC8008985 DOI: 10.1021/acs.chemrev.0c00825] [Citation(s) in RCA: 98] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The hexadehydro-Diels-Alder (HDDA) reaction is the thermal cyclization of an alkyne and a 1,3-diyne to generate a benzyne intermediate. This is then rapidly trapped, in situ, by a variety of species to yield highly functionalized benzenoid products. In contrast to nearly all other methods of aryne generation, no other reagents are required to produce an HDDA benzyne. The versatile and customizable nature of the process has attracted much attention due not only to its synthetic potential but also because of the fundamental mechanistic insights the studies often afford. The authors have attempted to provide here a comprehensive compilation of publications appearing by mid-2020 that describe experimental results of HDDA reactions.
Collapse
Affiliation(s)
- Lucas L Fluegel
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Thomas R Hoye
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| |
Collapse
|
4
|
Ma X, Maier J, Wenzel M, Friedrich A, Steffen A, Marder TB, Mitrić R, Brixner T. Direct observation of o-benzyne formation in photochemical hexadehydro-Diels-Alder ( hν-HDDA) reactions. Chem Sci 2020; 11:9198-9208. [PMID: 34123168 PMCID: PMC8163437 DOI: 10.1039/d0sc03184d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Reactive ortho-benzyne derivatives are believed to be the initial products of liquid-phase [4 + 2]-cycloadditions between a 1,3-diyne and an alkyne via what is known as a hexadehydro-Diels–Alder (HDDA) reaction. The UV/VIS spectroscopic observation of o-benzyne derivatives and their photochemical dynamics in solution, however, have not been reported previously. Herein, we report direct UV/VIS spectroscopic evidence for the existence of an o-benzyne in solution, and establish the dynamics of its formation in a photoinduced reaction. For this purpose, we investigated a bis-diyne compound using femtosecond transient absorption spectroscopy in the ultraviolet/visible region. In the first step, we observe excited-state isomerization on a sub-10 ps time scale. For identification of the o-benzyne species formed within 50–70 ps, and the corresponding photochemical hexadehydro-Diels–Alder (hν-HDDA) reactions, we employed two intermolecular trapping strategies. In the first case, the o-benzyne was trapped by a second bis-diyne, i.e., self-trapping. The self-trapping products were then identified in the transient absorption experiments by comparing their spectral features to those of the isolated products. In the second case, we used perylene for trapping and reconstructed the spectrum of the trapping product by removing the contribution of irrelevant species from the experimentally observed spectra. Taken together, the UV/VIS spectroscopic data provide a consistent picture for o-benzyne derivatives in solution as the products of photo-initiated HDDA reactions, and we deduce the time scales for their formation. We report the transient ultraviolet/visible absorption spectrum of an o-benzyne species in solution for the first time.![]()
Collapse
Affiliation(s)
- Xiaonan Ma
- Institut für Physikalische und Theoretische Chemie, Universität Würzburg Am Hubland 97074 Würzburg Germany .,Institute of Molecular Plus, Tianjin University No. 92 Weijin Road, Nankai District 300072 Tianjin China
| | - Jan Maier
- Institut für Anorganische Chemie, Institute for Sustainable Chemistry & Catalysis with Boron, Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Michael Wenzel
- Institut für Physikalische und Theoretische Chemie, Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Alexandra Friedrich
- Institut für Anorganische Chemie, Institute for Sustainable Chemistry & Catalysis with Boron, Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Andreas Steffen
- Institut für Anorganische Chemie, Institute for Sustainable Chemistry & Catalysis with Boron, Universität Würzburg Am Hubland 97074 Würzburg Germany .,Institut für Anorganische Chemie, Technische Universität Dortmund Otto-Hahn-Str.6 44227 Dortmund Germany
| | - Todd B Marder
- Institut für Anorganische Chemie, Institute for Sustainable Chemistry & Catalysis with Boron, Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Roland Mitrić
- Institut für Physikalische und Theoretische Chemie, Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Tobias Brixner
- Institut für Physikalische und Theoretische Chemie, Universität Würzburg Am Hubland 97074 Würzburg Germany
| |
Collapse
|
5
|
Ghorai S, Lin Y, Xia Y, Wink DJ, Lee D. Silver-Catalyzed Selective Multicomponent Coupling Reactions of Arynes with Nitriles and Isonitriles. Org Lett 2019; 22:642-647. [PMID: 31891273 DOI: 10.1021/acs.orglett.9b04416] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sourav Ghorai
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
| | - Yongjia Lin
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang Province 325035, P. R. China
| | - Yuanzhi Xia
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang Province 325035, P. R. China
| | - Donald J. Wink
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
| | - Daesung Lee
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
| |
Collapse
|
6
|
Ghorai S, Lee D. Synthesis of Imides, Imidates, Amidines, and Amides by Intercepting the Aryne-Isocyanide Adduct with Weak Nucleophiles. Org Lett 2019; 21:7390-7393. [PMID: 31482701 DOI: 10.1021/acs.orglett.9b02711] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
New aryne-based multicomponent coupling reactions for the formation of functionalized aromatic compounds have been developed. Arynes generated from triynes or tetraynes through the hexadehydro Diels-Alder reaction readily react with isocyanide to generate nitrilium intermediate. Intercepting this nitrilium species with various weak nucleophile including carboxylic acids, alcohols, sulfonamides, or water generated the corresponding imides, imidates, amidines, or amides. The high regioselectivity of these transformations was mainly controlled by the substituents of the arynes.
Collapse
Affiliation(s)
- Sourav Ghorai
- Department of Chemistry , University of Illinois at Chicago , 845 West Taylor Street , Chicago , Illinois 60607 , United States
| | - Daesung Lee
- Department of Chemistry , University of Illinois at Chicago , 845 West Taylor Street , Chicago , Illinois 60607 , United States
| |
Collapse
|
7
|
Diamond OJ, Marder TB. Methodology and applications of the hexadehydro-Diels–Alder (HDDA) reaction. Org Chem Front 2017. [DOI: 10.1039/c7qo00071e] [Citation(s) in RCA: 87] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Hexadehydro-Diels–Alder (HDDA) reactions between alkynes and 1,3-diynes readily generate highly reactive and synthetically useful arynes.
Collapse
Affiliation(s)
- Oliver J. Diamond
- Institut für Anorganische Chemie
- Julius-Maximilians-Universität Würzburg
- 97074 Würzburg
- Germany
- Department of Chemistry
| | - Todd B. Marder
- Institut für Anorganische Chemie
- Julius-Maximilians-Universität Würzburg
- 97074 Würzburg
- Germany
| |
Collapse
|
8
|
|
9
|
Koley S, Chanda T, Samai S, Singh MS. Switching Selectivity of α-Enolic Dithioesters: One Pot Access to Functionalized 1,2- and 1,3-Dithioles. J Org Chem 2016; 81:11594-11602. [PMID: 27813414 DOI: 10.1021/acs.joc.6b01802] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An operationally simple cascade protocol has been developed for the construction of 1,2- and 1,3-dithiole derivatives from α-enolic dithioesters. 1,2-Dithioles are achieved by the reaction of dithioesters with elemental sulfur in the presence of InCl3 under solvent-free conditions. 1,3-Dithioles have been constructed via DABCO mediated self-coupling of dithioesters in open air enabling the formation of two new C-S bonds and one ring in a single operation in contiguous fashion. The reactions proceeded smoothly affording the desired sulfur-rich heterocycles in good to excellent yields, exhibiting gram-scale ability and broad functional group tolerance utilizing easy to handle cheap and easily available reagents. The probable mechanisms for the formation of 1,2- and 1,3-dithioles from α-enolic dithioesters have been suggested.
Collapse
Affiliation(s)
- Suvajit Koley
- Department of Chemistry, Institute of Science, Banaras Hindu University , Varanasi 221005, India
| | - Tanmoy Chanda
- Department of Chemistry, Institute of Science, Banaras Hindu University , Varanasi 221005, India
| | - Subhasis Samai
- Department of Chemistry, University Colleges of Science and Technology, University of Calcutta , 92, A.P.C. Road, Kolkata 700009, India
| | - Maya Shankar Singh
- Department of Chemistry, Institute of Science, Banaras Hindu University , Varanasi 221005, India
| |
Collapse
|
10
|
Skraba-Joiner SL, Johnson RP, Agarwal J. Dehydropericyclic Reactions: Symmetry-Controlled Routes to Strained Reactive Intermediates. J Org Chem 2015; 80:11779-87. [DOI: 10.1021/acs.joc.5b01488] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sarah L. Skraba-Joiner
- Department of Chemistry and
Materials Science Program, University of New Hampshire, Durham, New Hampshire 03824, United States
| | - Richard P. Johnson
- Department of Chemistry and
Materials Science Program, University of New Hampshire, Durham, New Hampshire 03824, United States
| | - Jay Agarwal
- Center for Computational
Quantum Chemistry, University of Georgia , Athens, Georgia 30602, United States
| |
Collapse
|
11
|
Raslan MA, Khalil MA, Sayed SM. Benzimidazole Annulated New Heterocyclic Compounds: Synthesis of Polycyclic Pyrrole Derivatives. J Heterocycl Chem 2014. [DOI: 10.1002/jhet.2294] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Mohamed A. Raslan
- Chemistry Department, Faculty of Science; Aswan University; Aswan 81528 Egypt
| | - Mohamed A. Khalil
- Chemistry Department, Faculty of Science; Aswan University; Aswan 81528 Egypt
| | - Samia M. Sayed
- Chemistry Department, Faculty of Science; Aswan University; Aswan 81528 Egypt
| |
Collapse
|
12
|
Liang Y, Hong X, Yu P, Houk KN. Why Alkynyl Substituents Dramatically Accelerate Hexadehydro-Diels–Alder (HDDA) Reactions: Stepwise Mechanisms of HDDA Cycloadditions. Org Lett 2014; 16:5702-5. [DOI: 10.1021/ol502780w] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Yong Liang
- Department
of Chemistry and
Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Xin Hong
- Department
of Chemistry and
Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Peiyuan Yu
- Department
of Chemistry and
Biochemistry, University of California, Los Angeles, California 90095, United States
| | - K. N. Houk
- Department
of Chemistry and
Biochemistry, University of California, Los Angeles, California 90095, United States
| |
Collapse
|
13
|
Woods B, Baire B, Hoye TR. Rates of hexadehydro-Diels-Alder (HDDA) cyclizations: impact of the linker structure. Org Lett 2014; 16:4578-81. [PMID: 25153729 PMCID: PMC4156263 DOI: 10.1021/ol502131r] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2014] [Indexed: 12/31/2022]
Abstract
The rates of the hexadehydro-Diels-Alder (HDDA) reaction of substrates containing, minimally, a 1,3,8-triyne subunit are reported. Several series of related substrates, differing in the nature of the three-atom tether that links the 1,3-diyne and diynophile, were examined. Seemingly small changes in substrate structure result in large differences in cyclization rate, spanning more than 8 orders of magnitude. The reactivity trends revealed by these studies should prove useful in guiding substrate design and choice of reaction conditions in future applications.
Collapse
Affiliation(s)
- Brian
P. Woods
- Department of Chemistry, University of
Minnesota, 207 Pleasant
Street SE, Minneapolis, Minnesota 55455, United States
| | | | - Thomas R. Hoye
- Department of Chemistry, University of
Minnesota, 207 Pleasant
Street SE, Minneapolis, Minnesota 55455, United States
| |
Collapse
|
14
|
Koley S, Chowdhury S, Chanda T, Ramulu BJ, Nandi GC, Singh MS. Iron-Promoted Domino Annulation of α-Enolic Dithioesters with Ninhydrin under Solvent-Free Conditions: Chemoselective Direct Access to Indeno[1,2-b]thiophenes. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402276] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
|
15
|
Obafemi CA, Adelani PO, Fadare OA, Akinpelu DA, Famuyiwa SO. Synthesis, crystal structure and in vitro antibacterial activity of 2,3a,8b-trihydroxy-3-(thiophen-2-ylcarbonyl)-2-(trifluoromethyl)-2,3,3a,8b-tetrahydro-4H-indeno[1,2-b]furan-4-one. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2013.06.068] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
16
|
|
17
|
Ajaz A, Bradley AZ, Burrell RC, Li WHH, Daoust KJ, Bovee LB, DiRico KJ, Johnson RP. Concerted vs Stepwise Mechanisms in Dehydro-Diels–Alder Reactions. J Org Chem 2011; 76:9320-8. [DOI: 10.1021/jo201567d] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Aida Ajaz
- Department
of Chemistry, University of New Hampshire, Durham, New Hampshire 03824, United States
| | - Alexander Z. Bradley
- Department
of Chemistry, University of New Hampshire, Durham, New Hampshire 03824, United States
| | - Richard C. Burrell
- Department
of Chemistry, University of New Hampshire, Durham, New Hampshire 03824, United States
| | - William Hoi Hong Li
- Department
of Chemistry, University of New Hampshire, Durham, New Hampshire 03824, United States
| | - Kimberly J. Daoust
- Department
of Chemistry, University of New Hampshire, Durham, New Hampshire 03824, United States
| | - Laura Boddington Bovee
- Department
of Chemistry, University of New Hampshire, Durham, New Hampshire 03824, United States
| | - Kenneth J. DiRico
- Department
of Chemistry, University of New Hampshire, Durham, New Hampshire 03824, United States
| | - Richard P. Johnson
- Department
of Chemistry, University of New Hampshire, Durham, New Hampshire 03824, United States
| |
Collapse
|
18
|
Verma RK, Ila H, Singh MS. Heteroaromatic annulation studies on 2-[bis(methylthio)methylene]-1,3-indanedione: efficient routes to indenofused heterocycles. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.07.031] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
19
|
Abstract
There is experimental evidence that intermediate ortho-benzynes can be made by intramolecular [2 + 4] cycloaddition of a 1,3-diyne with an alkyne. Computations by several groups support a concerted mechanism for the cycloaddition of butadiyne with acetylene. High temperature benzyne cycloreversion has also been demonstrated experimentally; this may in fact be a common reaction in hydrocarbon fuel combustion. Following leads from earlier pyrolysis experiments, herein we predict that cycloaddition of benzyne with butadiyne can proceed by a stepwise mechanism to 2,3-naphthyne. However, a slightly lower energy path leads to a benzocyclobutadiene. ortho-Benzyne can be generated by solution-phase and solid-phase reaction in a microwave reactor. We have developed the method of microwave flash pyrolysis (MFP) for high temperature solid-phase microwave reactions. MFP reaction of phthalic anhydride, a classic benzyne precursor, results in a typical suite of products expected from a relatively high concentration of benzyne.
Collapse
|
20
|
Jeon KJ, Lee K. Synthesis of 4
H‐
indeno[1,2‐
b
]thiophenes, 8
H
‐indeno[2,1‐
b
]‐thiophenes and 8
H
‐indeno[2,1‐
b
]furans having acrylic acid unit. J Heterocycl Chem 2009. [DOI: 10.1002/jhet.5570450252] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ki Joon Jeon
- Organic Synthesis Laboratory, Department of Chemical Engineering Hanyang University, Seoul 133‐791, Korea
| | - Kee‐Jung Lee
- Organic Synthesis Laboratory, Department of Chemical Engineering Hanyang University, Seoul 133‐791, Korea
| |
Collapse
|
21
|
Kimura H, Torikai K, Ueda I. Thermal Cyclization of Nonconjugated Aryl-Yne-Carbodiimide Furnishing a Dibenzonaphthyridine Derivative. Chem Pharm Bull (Tokyo) 2009; 57:393-6. [DOI: 10.1248/cpb.57.393] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Hidenori Kimura
- The Institute of Scientific and Industrial Research, Osaka University
| | - Kohei Torikai
- The Institute of Scientific and Industrial Research, Osaka University
| | - Ikuo Ueda
- The Institute of Scientific and Industrial Research, Osaka University
| |
Collapse
|
22
|
Kimura H, Torikai K, Miyawaki K, Ueda I. Scope of the Thermal Cyclization of Nonconjugated Ene–Yne–Nitrile System: A Facile Synthesis of Cyanofluorenol Derivatives. CHEM LETT 2008. [DOI: 10.1246/cl.2008.662] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
23
|
Torikai K, Otsuka Y, Nishimura M, Sumida M, Kawai T, Sekiguchi K, Ueda I. Synthesis and DNA cleaving activity of water-soluble non-conjugated thienyl tetraynes. Bioorg Med Chem 2008; 16:5441-51. [PMID: 18434165 DOI: 10.1016/j.bmc.2008.04.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2008] [Revised: 04/07/2008] [Accepted: 04/08/2008] [Indexed: 11/18/2022]
Abstract
Water-soluble non-conjugated thienyl tetraynes (3-6) were synthesized and their DNA cleaving activity was evaluated using electrophoresis, atomic force microscopy (AFM) and Escherichia coli (E. coli) transformation techniques. The amino-functionalized compound 4 was shown to possess an activity to cleave plasmid DNA by both electrophoresis and E. coli transformation techniques. AFM also showed a cleavage of the circular DNA into a linear form with a formation of burst-star-shaped architectures, which were envisaged to be cross-linked DNA oligomers.
Collapse
Affiliation(s)
- Kohei Torikai
- The Institute of Scientific and Industrial Research, Osaka University, Mihogaoka, Ibaraki, Osaka 567-0047, Japan.
| | | | | | | | | | | | | |
Collapse
|
24
|
Toyota S, Kaneko K, Kurokawa M, Wakamatsu K. Facile formation of acenaphtho[1,2-a]pyrene structures by thermal isomerization of bis(8-ethynyl-1-naphthyl)ethynes. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.08.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
25
|
Kawano T, Inai H, Miyawaki K, Ueda I. Effect of Water Molecules on the Cycloaromatization of Non-Conjugated Aromatic Tetraynes. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2006. [DOI: 10.1246/bcsj.79.944] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
26
|
Kawano T, Suehiro M, Ueda I. Synthesis and Inclusion Properties of 6,6′-Bi(benzo[b]fluoren-5-ol) Derivative by Cycloaromatization. CHEM LETT 2006. [DOI: 10.1246/cl.2006.58] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|