1
|
Khan H, Barman D, Sen S. Light-Induced Generation and Cycloaddition Reactions of Benzyne: Synthesis of Naphthoxindoles E and Annulated Indolizines. J Org Chem 2024; 89:6257-6262. [PMID: 38608223 DOI: 10.1021/acs.joc.4c00257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/14/2024]
Abstract
By virtue of their high electrophilic nature, benzynes serve as reactive dienophiles in numerous cycloaddition reactions. However, in situ generation of benzyne involves either base-mediated thermal reactions, low-temperature conditions, or metal-catalyzed reactions of substituted arenes. This limits the applicability of benzynes as suitable dipolarophiles in cycloaddition reactions. Herein, we have reported a UVA (365 nM)-induced in situ generation of benzynes (from triazenyl benzoic acid) and subsequently their [4 + 2] Diels-Alder and [3 + 2] cycloaddition reactions with appropriate reaction partners such as N-protected alkylidene oxindole carboxylates and pyridinium ylides to afford naphthoxindoles E and pyrido[2,1-a]isoindole, respectively, in moderate to excellent yield. The reactions occurred at room temperature and under reagent-free reaction conditions. Each of these building blocks is pharmaceutically relevant; hence, this highlights an interesting strategy to access these classes of compounds.
Collapse
Affiliation(s)
- Haya Khan
- Department of Chemistry, School of Natural Sciences, Shiv Nadar Institution of Eminence Deemed to be University, Dadri, Chithera, GB Nagar, Uttar Pradesh 201314, India
| | - Dhiraj Barman
- Department of Chemistry, School of Natural Sciences, Shiv Nadar Institution of Eminence Deemed to be University, Dadri, Chithera, GB Nagar, Uttar Pradesh 201314, India
| | - Subhabrata Sen
- Department of Chemistry, School of Natural Sciences, Shiv Nadar Institution of Eminence Deemed to be University, Dadri, Chithera, GB Nagar, Uttar Pradesh 201314, India
| |
Collapse
|
2
|
Rosenberger JE, Xie Y, Fang Y, Lyu X, Trout WS, Dmitrenko O, Fox JM. Ligand-Directed Photocatalysts and Far-Red Light Enable Catalytic Bioorthogonal Uncaging inside Live Cells. J Am Chem Soc 2023; 145:6067-6078. [PMID: 36881718 PMCID: PMC10589873 DOI: 10.1021/jacs.2c10655] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
Abstract
Described are ligand-directed catalysts for live-cell, photocatalytic activation of bioorthogonal chemistry. Catalytic groups are localized via a tethered ligand either to DNA or to tubulin, and red light (660 nm) photocatalysis is used to initiate a cascade of DHTz oxidation, intramolecular Diels-Alder reaction, and elimination to release phenolic compounds. Silarhodamine (SiR) dyes, more conventionally used as biological fluorophores, serve as photocatalysts that have high cytocompatibility and produce minimal singlet oxygen. Commercially available conjugates of Hoechst dye (SiR-H) and docetaxel (SiR-T) are used to localize SiR to the nucleus and microtubules, respectively. Computation was used to assist the design of a new class of redox-activated photocage to release either phenol or n-CA4, a microtubule-destabilizing agent. In model studies, uncaging is complete within 5 min using only 2 μM SiR and 40 μM photocage. In situ spectroscopic studies support a mechanism involving rapid intramolecular Diels-Alder reaction and a rate-determining elimination step. In cellular studies, this uncaging process is successful at low concentrations of both the photocage (25 nM) and the SiR-H dye (500 nM). Uncaging n-CA4 causes microtubule depolymerization and an accompanying reduction in cell area. Control studies demonstrate that SiR-H catalyzes uncaging inside the cell, and not in the extracellular environment. With SiR-T, the same dye serves as a photocatalyst and the fluorescent reporter for microtubule depolymerization, and with confocal microscopy, it was possible to visualize microtubule depolymerization in real time as the result of photocatalytic uncaging in live cells.
Collapse
Affiliation(s)
- Julia E. Rosenberger
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA
| | - Yixin Xie
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA
| | - Yinzhi Fang
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA
| | - Xinyi Lyu
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA
| | - William S. Trout
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA
| | - Olga Dmitrenko
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA
| | - Joseph M. Fox
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA
| |
Collapse
|
3
|
Arora A, Singh K. Click Chemistry Mediated by Photochemical Energy. ChemistrySelect 2022. [DOI: 10.1002/slct.202200541] [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)
- Amandeep Arora
- Department of Natural and Applied Science University of Dubuque 2000 University Ave. Dubuque, IA 52001 USA
| | - Kamaljeet Singh
- TLC Pharmaceutical Standards 130 Pony Drive, Newmarket ON Canada L3Y 7B6 USA
| |
Collapse
|
4
|
Jangir N, Poonam, Dhadda S, Jangid DK. Recent advances in the synthesis of five‐ and six‐membered heterocycles as bioactive skeleton: A concise overview. ChemistrySelect 2022. [DOI: 10.1002/slct.202103139] [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)
- Nidhi Jangir
- Department of Chemistry (Centre of Advanced Study) University of Rajasthan JLN Marg Jaipur Rajasthan India- 302004
| | - Poonam
- Department of Chemistry (Centre of Advanced Study) University of Rajasthan JLN Marg Jaipur Rajasthan India- 302004
| | - Surbhi Dhadda
- Department of Chemistry (Centre of Advanced Study) University of Rajasthan JLN Marg Jaipur Rajasthan India- 302004
| | - Dinesh K. Jangid
- Department of Chemistry (Centre of Advanced Study) University of Rajasthan JLN Marg Jaipur Rajasthan India- 302004
| |
Collapse
|
5
|
Jemas A, Xie Y, Pigga JE, Caplan JL, am Ende CW, Fox JM. Catalytic Activation of Bioorthogonal Chemistry with Light (CABL) Enables Rapid, Spatiotemporally Controlled Labeling and No-Wash, Subcellular 3D-Patterning in Live Cells Using Long Wavelength Light. J Am Chem Soc 2022; 144:1647-1662. [PMID: 35072462 PMCID: PMC9364228 DOI: 10.1021/jacs.1c10390] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Described is the spatiotemporally controlled labeling and patterning of biomolecules in live cells through the catalytic activation of bioorthogonal chemistry with light, referred to as "CABL". Here, an unreactive dihydrotetrazine (DHTz) is photocatalytically oxidized in the intracellular environment by ambient O2 to produce a tetrazine that immediately reacts with a trans-cyclooctene (TCO) dienophile. 6-(2-Pyridyl)dihydrotetrazine-3-carboxamides were developed as stable, cell permeable DHTz reagents that upon oxidation produce the most reactive tetrazines ever used in live cells with Diels-Alder kinetics exceeding k2 of 106 M-1 s-1. CABL photocatalysts are based on fluorescein or silarhodamine dyes with activation at 470 or 660 nm. Strategies for limiting extracellular production of singlet oxygen are described that increase the cytocompatibility of photocatalysis. The HaloTag self-labeling platform was used to introduce DHTz tags to proteins localized in the nucleus, mitochondria, actin, or cytoplasm, and high-yielding subcellular activation and labeling with a TCO-fluorophore were demonstrated. CABL is light-dose dependent, and two-photon excitation promotes CABL at the suborganelle level to selectively pattern live cells under no-wash conditions. CABL was also applied to spatially resolved live-cell labeling of an endogenous protein target by using TIRF microscopy to selectively activate intracellular monoacylglycerol lipase tagged with DHTz-labeled small molecule covalent inhibitor. Beyond spatiotemporally controlled labeling, CABL also improves the efficiency of "ordinary" tetrazine ligations by rescuing the reactivity of commonly used 3-aryl-6-methyltetrazine reporters that become partially reduced to DHTzs inside cells. The spatiotemporal control and fast rates of photoactivation and labeling of CABL should enable a range of biomolecular labeling applications in living systems.
Collapse
Affiliation(s)
- Andrew Jemas
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA
| | - Yixin Xie
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA
| | - Jessica E. Pigga
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA
| | - Jeffrey L. Caplan
- Department of Plant and Soil Sciences and Delaware Biotechnology Institute, University of Delaware, Newark, DE 19716, USA
| | - Christopher W. am Ende
- Pfizer Worldwide Research and Development, Eastern Point Road, Groton, Connecticut 06340, United States
| | - Joseph M. Fox
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA
| |
Collapse
|
6
|
Ito M, Yamabayashi Y, Takishima Y, Higuchi K, Sugiyama S. Aryne Generation from <i>o</i>-Triazenylarylboronic Acids Induced by Brønsted Acid. Chem Pharm Bull (Tokyo) 2022; 70:566-572. [DOI: 10.1248/cpb.c22-00264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
7
|
Synthesis of functionized N-arylbenzotriazoles via palladium catalyzed intramolecular amination. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2021.153587] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
8
|
Dinér P, Proietti G, Prathap KJ, Ye X, Olsson RT. Nickel Boride Catalyzed Reductions of Nitro Compounds and Azides: Nanocellulose-Supported Catalysts in Tandem Reactions. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/a-1579-2190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
AbstractNickel boride catalyst prepared in situ from NiCl2 and sodium borohydride allowed, in the presence of an aqueous solution of TEMPO-oxidized nanocellulose (0.01 wt%), the reduction of a wide range of nitroarenes and aliphatic nitro compounds. Here we describe how the modified nanocellulose has a stabilizing effect on the catalyst that enables low loading of the nickel salt pre-catalyst. Ni-B prepared in situ from a methanolic solution was also used to develop a greener and facile reduction of organic azides, offering a substantially lowered catalyst loading with respect to reported methods in the literature. Both aromatic and aliphatic azides were reduced, and the protocol is compatible with a one-pot Boc-protection of the obtained amine yielding the corresponding carbamates. Finally, bacterial crystalline nanocellulose was chosen as a support for the Ni-B catalyst to allow an easy recovery step of the catalyst and its recyclability for new reduction cycles.
Collapse
Affiliation(s)
- Peter Dinér
- Division of Organic Chemistry, Department of Chemistry, School of Engineering Sciences in Chemistry, Biology and Health, KTH – Royal Institute of Technology
| | - Giampiero Proietti
- Division of Organic Chemistry, Department of Chemistry, School of Engineering Sciences in Chemistry, Biology and Health, KTH – Royal Institute of Technology
| | - Kaniraj Jeya Prathap
- Division of Organic Chemistry, Department of Chemistry, School of Engineering Sciences in Chemistry, Biology and Health, KTH – Royal Institute of Technology
| | - Xinchen Ye
- Department Fiber and Polymer Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH – Royal Institute of Technology
| | - Richard T. Olsson
- Department Fiber and Polymer Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH – Royal Institute of Technology
| |
Collapse
|
9
|
Wang C, Zhang H, Zhang T, Zou X, Wang H, Rosenberger J, Vannam R, Trout WS, Grimm JB, Lavis LD, Thorpe C, Jia X, Li Z, Fox JM. Enabling In Vivo Photocatalytic Activation of Rapid Bioorthogonal Chemistry by Repurposing Silicon-Rhodamine Fluorophores as Cytocompatible Far-Red Photocatalysts. J Am Chem Soc 2021; 143:10793-10803. [PMID: 34250803 PMCID: PMC8765119 DOI: 10.1021/jacs.1c05547] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Chromophores that absorb in the tissue-penetrant far-red/near-infrared window have long served as photocatalysts to generate singlet oxygen for photodynamic therapy. However, the cytotoxicity and side reactions associated with singlet oxygen sensitization have posed a problem for using long-wavelength photocatalysis to initiate other types of chemical reactions in biological environments. Herein, silicon-Rhodamine compounds (SiRs) are described as photocatalysts for inducing rapid bioorthogonal chemistry using 660 nm light through the oxidation of a dihydrotetrazine to a tetrazine in the presence of trans-cyclooctene dienophiles. SiRs have been commonly used as fluorophores for bioimaging but have not been applied to catalyze chemical reactions. A series of SiR derivatives were evaluated, and the Janelia Fluor-SiR dyes were found to be especially effective in catalyzing photooxidation (typically 3%). A dihydrotetrazine/tetrazine pair is described that displays high stability in both oxidation states. A protein that was site-selectively modified by trans-cyclooctene was quantitatively conjugated upon exposure to 660 nm light and a dihydrotetrazine. By contrast, a previously described methylene blue catalyst was found to rapidly degrade the protein. SiR-red light photocatalysis was used to cross-link hyaluronic acid derivatives functionalized by dihydrotetrazine and trans-cyclooctenes, enabling 3D culture of human prostate cancer cells. Photoinducible hydrogel formation could also be carried out in live mice through subcutaneous injection of a Cy7-labeled hydrogel precursor solution, followed by brief irradiation to produce a stable hydrogel. This cytocompatible method for using red light photocatalysis to activate bioorthogonal chemistry is anticipated to find broad applications where spatiotemporal control is needed in biological environments.
Collapse
Affiliation(s)
- Chuanqi Wang
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA
| | - He Zhang
- Department of Materials Science and Engineering, University of Delaware, Newark, Delaware 19716, USA
| | - Tao Zhang
- Department of Radiology and Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Xiaoyu Zou
- Department of Materials Science and Engineering, University of Delaware, Newark, Delaware 19716, USA
| | - Hui Wang
- Department of Radiology and Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Julia Rosenberger
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA
| | - Raghu Vannam
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA
| | - William S. Trout
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA
| | - Jonathan B. Grimm
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn Virginia, 20147, USA
| | - Luke D. Lavis
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn Virginia, 20147, USA
| | - Colin Thorpe
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA
| | - Xinqiao Jia
- Department of Materials Science and Engineering, University of Delaware, Newark, Delaware 19716, USA
- Delaware Biotechnology Institute, Newark, Delaware 19711, USA
| | - Zibo Li
- Department of Radiology and Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Joseph M. Fox
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA
- Department of Materials Science and Engineering, University of Delaware, Newark, Delaware 19716, USA
| |
Collapse
|
10
|
Fairbanks BD, Macdougall LJ, Mavila S, Sinha J, Kirkpatrick BE, Anseth KS, Bowman CN. Photoclick Chemistry: A Bright Idea. Chem Rev 2021; 121:6915-6990. [PMID: 33835796 PMCID: PMC9883840 DOI: 10.1021/acs.chemrev.0c01212] [Citation(s) in RCA: 86] [Impact Index Per Article: 28.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
At its basic conceptualization, photoclick chemistry embodies a collection of click reactions that are performed via the application of light. The emergence of this concept has had diverse impact over a broad range of chemical and biological research due to the spatiotemporal control, high selectivity, and excellent product yields afforded by the combination of light and click chemistry. While the reactions designated as "photoclick" have many important features in common, each has its own particular combination of advantages and shortcomings. A more extensive realization of the potential of this chemistry requires a broader understanding of the physical and chemical characteristics of the specific reactions. This review discusses the features of the most frequently employed photoclick reactions reported in the literature: photomediated azide-alkyne cycloadditions, other 1,3-dipolarcycloadditions, Diels-Alder and inverse electron demand Diels-Alder additions, radical alternating addition chain transfer additions, and nucleophilic additions. Applications of these reactions in a variety of chemical syntheses, materials chemistry, and biological contexts are surveyed, with particular attention paid to the respective strengths and limitations of each reaction and how that reaction benefits from its combination with light. Finally, challenges to broader employment of these reactions are discussed, along with strategies and opportunities to mitigate such obstacles.
Collapse
Affiliation(s)
- Benjamin D Fairbanks
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, Colorado 80303, United States
| | - Laura J Macdougall
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, Colorado 80303, United States
| | - Sudheendran Mavila
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, Colorado 80303, United States
| | - Jasmine Sinha
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, Colorado 80303, United States
| | - Bruce E Kirkpatrick
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, Colorado 80303, United States
- The BioFrontiers Institute, University of Colorado, Boulder, Colorado 80303, United States
- Medical Scientist Training Program, School of Medicine, University of Colorado, Aurora, Coorado 80045, United States
| | - Kristi S Anseth
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, Colorado 80303, United States
- The BioFrontiers Institute, University of Colorado, Boulder, Colorado 80303, United States
| | - Christopher N Bowman
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, Colorado 80303, United States
- Materials Science and Engineering Program, University of Colorado, Boulder, Colorado 80303, United States
| |
Collapse
|
11
|
Abstract
The merging of click chemistry with discrete photochemical processes has led to the creation of a new class of click reactions, collectively known as photoclick chemistry. These light-triggered click reactions allow the synthesis of diverse organic structures in a rapid and precise manner under mild conditions. Because light offers unparalleled spatiotemporal control over the generation of the reactive intermediates, photoclick chemistry has become an indispensable tool for a wide range of spatially addressable applications including surface functionalization, polymer conjugation and cross-linking, and biomolecular labeling in the native cellular environment. Over the past decade, a growing number of photoclick reactions have been developed, especially those based on the 1,3-dipolar cycloadditions and Diels-Alder reactions owing to their excellent reaction kinetics, selectivity, and biocompatibility. This review summarizes the recent advances in the development of photoclick reactions and their applications in chemical biology and materials science. A particular emphasis is placed on the historical contexts and mechanistic insights into each of the selected reactions. The in-depth discussion presented here should stimulate further development of the field, including the design of new photoactivation modalities, the continuous expansion of λ-orthogonal tandem photoclick chemistry, and the innovative use of these unique tools in bioconjugation and nanomaterial synthesis.
Collapse
Affiliation(s)
- Gangam Srikanth Kumar
- Department of Chemistry, State University of New York at Buffalo, Buffalo, New York 14260-3000, United States
| | - Qing Lin
- Department of Chemistry, State University of New York at Buffalo, Buffalo, New York 14260-3000, United States
| |
Collapse
|
12
|
Abstract
Click chemistry has been established rapidly as one of the most valuable methods for the chemical transformation of complex molecules. Due to the rapid rates, clean conversions to the products, and compatibility of the reagents and reaction conditions even in complex settings, it has found applications in many molecule-oriented disciplines. From the vast landscape of click reactions, approaches have emerged in the past decade centered around oxidative processes to generate in situ highly reactive synthons from dormant functionalities. These approaches have led to some of the fastest click reactions know to date. Here, we review the various methods that can be used for such oxidation-induced "one-pot" click chemistry for the transformation of small molecules, materials, and biomolecules. A comprehensive overview is provided of oxidation conditions that induce a click reaction, and oxidation conditions are orthogonal to other click reactions so that sequential "click-oxidation-click" derivatization of molecules can be performed in one pot. Our review of the relevant literature shows that this strategy is emerging as a powerful approach for the preparation of high-performance materials and the generation of complex biomolecules. As such, we expect that oxidation-induced "one-pot" click chemistry will widen in scope substantially in the forthcoming years.
Collapse
Affiliation(s)
- Bauke Albada
- Laboratory of Organic Chemistry, Wageningen University & Research, Stippeneng 4, 6807 WE Wageningen, The Netherlands
| | - Jordi F Keijzer
- Laboratory of Organic Chemistry, Wageningen University & Research, Stippeneng 4, 6807 WE Wageningen, The Netherlands
| | - Han Zuilhof
- Laboratory of Organic Chemistry, Wageningen University & Research, Stippeneng 4, 6807 WE Wageningen, The Netherlands.,School of Pharmaceutical Sciences and Technology, Tianjin University, Tianjin 300072, China.,Department of Chemical and Materials Engineering, Faculty of Engineering, King Abdulaziz University, 21589 Jeddah, Saudi Arabia
| | - Floris van Delft
- Laboratory of Organic Chemistry, Wageningen University & Research, Stippeneng 4, 6807 WE Wageningen, The Netherlands.,Synaffix BV, Industrielaan 63, 5349 AE, Oss, The Netherlands
| |
Collapse
|
13
|
Baumann M, Bracken C, Batsanov AS. Development of a Continuous Photochemical Benzyne-Forming Process. SYNOPEN 2021. [DOI: 10.1055/s-0040-1706016] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
AbstractA continuous-flow process is presented that enables the safe generation and derivatization of benzyne under photochemical conditions. This is facilitated by a new high-power LED lamp emitting light at 365 nm. The resulting flow process effectively controls the release of gaseous by-products based on an adjustable backpressure regulator and delivers a series of heterocyclic products in a short residence time of 3 minutes. The robustness of this methodology is demonstrated for the rapid generation of benzotriazoles, 2H-indazoles and various furan-derived adducts, facilitating the preparation of these important heterocyclic scaffolds via a simple and readily scalable flow protocol.
Collapse
|
14
|
Ito M, Yamabayashi Y, Oikawa M, Kano E, Higuchi K, Sugiyama S. Silica gel-induced aryne generation from o-triazenylarylboronic acids as stable solid precursors. Org Chem Front 2021. [DOI: 10.1039/d1qo00385b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
We developed o-triazenylarylboronic acids as stable solid aryne precursors, which generate arynes under mild conditions using silica gel as the sole reagent and undergo reactions with a range of arynophiles both in solution and in the solid-state.
Collapse
Affiliation(s)
- Motoki Ito
- Meiji Pharmaceutical University
- Tokyo 204-8588
- Japan
| | | | - Mio Oikawa
- Meiji Pharmaceutical University
- Tokyo 204-8588
- Japan
| | - Emi Kano
- Meiji Pharmaceutical University
- Tokyo 204-8588
- Japan
| | | | | |
Collapse
|
15
|
Tripolszky A, Tóth E, Szabó PT, Hackler L, Kari B, Puskás LG, Bálint E. Synthesis and In Vitro Cytotoxicity and Antibacterial Activity of Novel 1,2,3-Triazol-5-yl-phosphonates. Molecules 2020; 25:E2643. [PMID: 32517229 PMCID: PMC7321403 DOI: 10.3390/molecules25112643] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 06/03/2020] [Accepted: 06/04/2020] [Indexed: 11/18/2022] Open
Abstract
Novel 1,2,3-triazol-5-yl-phosphonates were prepared by the copper(I)-catalyzed domino reaction of phenylacetylene, organic azides and dialkyl phosphites. The process was optimized on the synthesis of the dibutyl (1-benzyl-4-phenyl-1H-1,2,3-triazol-5-yl)phosphonate in respect of the catalyst, the base and the solvent, as well as of the reaction parameters (molar ratio of the starting materials, atmosphere, temperature and reaction time). The method elaborated could be applied to a range of organic azides and dialkyl phosphites, which confirmed the large scope and the functional group tolerance. The in vitro cytotoxicity on different cell lines and the antibacterial activity of the synthesized 1,2,3-triazol-5-yl-phosphonates was explored. According to the IC50 values determined, only modest antibacterial effect was detected, while some derivatives showed moderate activity against human promyelocytic leukemia HL-60 cells.
Collapse
Affiliation(s)
- Anna Tripolszky
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, H-1521 Budapest, Hungary; (A.T.); (E.T.)
| | - Emese Tóth
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, H-1521 Budapest, Hungary; (A.T.); (E.T.)
| | - Pál Tamás Szabó
- MS Metabolomics Laboratory, Instrumentation Center, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar tudósok krt. 2., 1117 Budapest, Hungary;
| | - László Hackler
- Avidin Ltd., Alsó kikötő sor 11/D, H-6726 Szeged, Hungary; (L.H.J.); (B.K.)
| | - Beáta Kari
- Avidin Ltd., Alsó kikötő sor 11/D, H-6726 Szeged, Hungary; (L.H.J.); (B.K.)
| | - László G. Puskás
- Avidin Ltd., Alsó kikötő sor 11/D, H-6726 Szeged, Hungary; (L.H.J.); (B.K.)
| | - Erika Bálint
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, H-1521 Budapest, Hungary; (A.T.); (E.T.)
| |
Collapse
|
16
|
Ito M, Tanaka A, Hatakeyama K, Kano E, Higuchi K, Sugiyama S. One-pot generation of benzynes from 2-aminophenylboronates via a Rh(ii)-catalyzed N–H amination/oxidation/elimination cascade process. Org Chem Front 2020. [DOI: 10.1039/c9qo01115c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Rh(ii)-Nitrene-mediated N–H amination of 2-aminophenylboronates triggered a cascade of oxidation/elimination processes resulting in the generation of benzynes.
Collapse
Affiliation(s)
- Motoki Ito
- Meiji Pharmaceutical University
- Tokyo 204-8588
- Japan
| | - Arisa Tanaka
- Meiji Pharmaceutical University
- Tokyo 204-8588
- Japan
| | | | - Emi Kano
- Meiji Pharmaceutical University
- Tokyo 204-8588
- Japan
| | | | | |
Collapse
|
17
|
Jain Y, Kumari M, Laddha H, Gupta R. Ultrasound Promoted Fabrication of CuO‐Graphene Oxide Nanocomposite for Facile Synthesis of Fluorescent Coumarin Based 1,4‐disubsituted 1,2,3‐triazoles in Aqueous Media. ChemistrySelect 2019. [DOI: 10.1002/slct.201901355] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Yachana Jain
- Department of ChemistryMalaviya National Institute of Technology Jaipur Jaipur 302017 India
| | - Mitlesh Kumari
- Department of ChemistryMalaviya National Institute of Technology Jaipur Jaipur 302017 India
| | - Harshita Laddha
- Department of ChemistryMalaviya National Institute of Technology Jaipur Jaipur 302017 India
| | - Ragini Gupta
- Department of ChemistryMalaviya National Institute of Technology Jaipur Jaipur 302017 India
- Materials Research CentreMalaviya National Institute of Technology Jaipur Jaipur 302017 India
| |
Collapse
|
18
|
Tripolszky A, Németh K, Szabó PT, Bálint E. Synthesis of (1,2,3-triazol-4-yl)methyl Phosphinates and (1,2,3-Triazol-4-yl)methyl Phosphates by Copper-Catalyzed Azide-Alkyne Cycloaddition. Molecules 2019; 24:E2085. [PMID: 31159301 PMCID: PMC6600419 DOI: 10.3390/molecules24112085] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 05/30/2019] [Accepted: 05/30/2019] [Indexed: 12/02/2022] Open
Abstract
An efficient and practical method was developed for the synthesis of new (1,2,3triazol4yl)methyl phosphinates and (1,2,3-triazol-4-yl)methyl phosphates by the copper(I)catalyzed azide-alkyne cycloaddition (CuAAC) of organic azides and prop-2-ynyl phosphinate or prop-2-ynyl phosphate. The synthesis of (1benzyl-1H-1,2,3-triazol-4-yl)methyl diphenylphosphinate was optimized with respect to the reaction parameters, such as the temperature, reaction time, and catalyst loading. The approach was applied to a range of organic azides, which confirmed the wide scope and the substituent tolerance of the process. The method elaborated represents a novel approach for the synthesis of the target compounds.
Collapse
Affiliation(s)
- Anna Tripolszky
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, 1521 Budapest, Hungary.
| | - Krisztina Németh
- MS Metabolomics Laboratory, Instrumentation Center, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar Tudósok Krt. 2., H-1117 Budapest, Hungary.
| | - Pál Tamás Szabó
- MS Metabolomics Laboratory, Instrumentation Center, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar Tudósok Krt. 2., H-1117 Budapest, Hungary.
| | - Erika Bálint
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, 1521 Budapest, Hungary.
| |
Collapse
|
19
|
Lenstra DC, Wolf JJ, Mecinović J. Catalytic Staudinger Reduction at Room Temperature. J Org Chem 2019; 84:6536-6545. [PMID: 31050295 DOI: 10.1021/acs.joc.9b00831] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
We report an efficient catalytic Staudinger reduction at room temperature that enables the preparation of a structurally diverse set of amines from azides in excellent yields. The reaction is based on the use of catalytic amounts of triphenylphosphine as a phosphine source and diphenyldisiloxane as a reducing agent. Our catalytic Staudinger reduction exhibits a high chemoselectivity, as exemplified by reduction of azides over other common functionalities, including nitriles, alkenes, alkynes, esters, and ketones.
Collapse
Affiliation(s)
- Danny C Lenstra
- Institute for Molecules and Materials , Radboud University , Heyendaalseweg 135 , Nijmegen 6525 AJ , The Netherlands
| | - Joris J Wolf
- Institute for Molecules and Materials , Radboud University , Heyendaalseweg 135 , Nijmegen 6525 AJ , The Netherlands
| | - Jasmin Mecinović
- Institute for Molecules and Materials , Radboud University , Heyendaalseweg 135 , Nijmegen 6525 AJ , The Netherlands.,Department of Physics, Chemistry and Pharmacy , University of Southern Denmark , Campusvej 55 , Odense 5230 , Denmark
| |
Collapse
|
20
|
Abstract
The bioorthogonal reaction toolbox contains approximately two-dozen unique chemistries that permit selective tagging and probing of biomolecules. Over the past two decades, significant effort has been devoted to optimizing and discovering bioorthogonal reagents that are faster, fluorogenic, and orthogonal to the already existing bioorthogonal repertoire. Conversely, efforts to explore bioorthogonal reagents whose reactivity can be controlled in space and/or time are limited. The "activatable" bioorthogonal reagents that do exist are often unimodal, meaning that their reagent's activation method cannot be easily modified to enable activation with red-shifted wavelengths, enzymes, or metabolic-byproducts and ions like H2O2 or Fe3+. Here, we summarize the available activatable bioorthogonal reagents with a focus on our recent addition: modular caged cyclopropenes. We designed caged cyclopropenes to be unreactive to their bioorthogonal partner until they are activated through the removal of the cage by light, an enzyme, or another reaction partner. To accomplish this, their structure includes a nitrogen atom at the cyclopropene C3 position that is decorated with the desired caging group through a carbamate linkage. This 3-N cyclopropene system can allow control of cyclopropene reactivity using a multitude of already available photo- and enzyme-caging groups. Additionally, this cyclopropene scaffold can enable metabolic-byproduct or ion activation of bioorthogonal reactions.
Collapse
Affiliation(s)
- Pratik Kumar
- Department of Chemistry, Stony Brook University, Stony Brook, NY, United States
| | - Scott T Laughlin
- Department of Chemistry, Stony Brook University, Stony Brook, NY, United States; Institute of Chemical Biology and Drug Discovery, Stony Brook University, Stony Brook, NY, United States.
| |
Collapse
|
21
|
Poshala S, Thunga S, Manchala S, Kokatla HP. In Situ Generation of Copper Nanoparticles by Rongalite and Their Use as Catalyst for Click Chemistry in Water. ChemistrySelect 2018. [DOI: 10.1002/slct.201802584] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Soumya Poshala
- Department of Chemistry; National Institute of Technology Warangal, Telangana; 506004 India
| | - Sanjeeva Thunga
- Department of Chemistry; National Institute of Technology Warangal, Telangana; 506004 India
| | - Saikumar Manchala
- Department of Chemistry; National Institute of Technology Warangal, Telangana; 506004 India
| | - Hari Prasad Kokatla
- Department of Chemistry; National Institute of Technology Warangal, Telangana; 506004 India
| |
Collapse
|
22
|
Regioselective N 1 - or N 2 -modification of benzotriazoles with iodonium salts in the presence of copper compounds. MENDELEEV COMMUNICATIONS 2018. [DOI: 10.1016/j.mencom.2018.05.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
23
|
Takagi A. Development of Efficient Methods for Benzyne Generation. YAKUGAKU ZASSHI 2018; 138:27-35. [DOI: 10.1248/yakushi.17-00157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Akira Takagi
- Graduate School of Pharmaceutical Sciences, Osaka University
| |
Collapse
|
24
|
Bhattacharya S, Sarkar R, Chakraborty B, Porgador A, Jelinek R. Nitric Oxide Sensing through Azo-Dye Formation on Carbon Dots. ACS Sens 2017; 2:1215-1224. [PMID: 28770991 DOI: 10.1021/acssensors.7b00356] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Carbon dots (C-dots) prepared through heating of aminoguanidine and citric acid enable bimodal (colorimetric and fluorescence) detection of nitric oxide (NO) in aqueous solutions. The C-dots retained the functional units of aminoguanidine, which upon reaction with NO produced surface residues responsible for the color and fluorescence transformations. Notably, the aminoguanidine/citric acid C-dots were noncytotoxic, making possible real-time and high sensitivity detection of NO in cellular environments. Using multiprong spectroscopic and chromatography analyses we deciphered the molecular mechanism accounting for the NO-induced structural and photophysical transformations of the C-dots, demonstrating for the first time N2 release and azo dye formation upon the C-dots' surface.
Collapse
Affiliation(s)
- Sagarika Bhattacharya
- Department of Chemistry, ‡The Shraga Segal Department of Microbiology, Immunology
and Genetics, Faculty of Health Sciences, and §Ilse Katz Institute for Nanotechnology, Ben Gurion University of the Negev, Beer Sheva 84105, Israel
| | - Rhitajit Sarkar
- Department of Chemistry, ‡The Shraga Segal Department of Microbiology, Immunology
and Genetics, Faculty of Health Sciences, and §Ilse Katz Institute for Nanotechnology, Ben Gurion University of the Negev, Beer Sheva 84105, Israel
| | - Biswarup Chakraborty
- Department of Chemistry, ‡The Shraga Segal Department of Microbiology, Immunology
and Genetics, Faculty of Health Sciences, and §Ilse Katz Institute for Nanotechnology, Ben Gurion University of the Negev, Beer Sheva 84105, Israel
| | - Angel Porgador
- Department of Chemistry, ‡The Shraga Segal Department of Microbiology, Immunology
and Genetics, Faculty of Health Sciences, and §Ilse Katz Institute for Nanotechnology, Ben Gurion University of the Negev, Beer Sheva 84105, Israel
| | - Raz Jelinek
- Department of Chemistry, ‡The Shraga Segal Department of Microbiology, Immunology
and Genetics, Faculty of Health Sciences, and §Ilse Katz Institute for Nanotechnology, Ben Gurion University of the Negev, Beer Sheva 84105, Israel
| |
Collapse
|
25
|
Wittenberg E, Abetz V. New post modification route for styrene butadiene copolymers leading to supramolecular hydrogen bonded networks - Synthesis and thermodynamic analysis of complexation. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.06.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
|
26
|
Ikawa T, Masuda S, Nakajima H, Akai S. 2-(Trimethylsilyl)phenyl Trimethylsilyl Ethers as Stable and Readily Accessible Benzyne Precursors. J Org Chem 2017; 82:4242-4253. [PMID: 28247765 DOI: 10.1021/acs.joc.7b00238] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Stable 2-(trimethylsilyl)phenyl trimethylsilyl ethers, readily obtained from the corresponding halogenated phenols in two steps, were identified as novel benzyne precursors. These species were converted to benzynes by a domino reaction of O-desilylation, O-nonaflylation, and β-elimination under mild conditions using nonafluorobutanesulfonyl fluoride (NfF) and tetrabutylammonium triphenyldifluorosilicate (TBAT). The generated benzynes were trapped by various arynophiles to afford a wide variety of benzo-fused heterocycles.
Collapse
Affiliation(s)
- Takashi Ikawa
- Graduate School of Pharmaceutical Sciences, Osaka University , 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Shigeaki Masuda
- Graduate School of Pharmaceutical Sciences, Osaka University , 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Hiroki Nakajima
- Graduate School of Pharmaceutical Sciences, Osaka University , 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Shuji Akai
- Graduate School of Pharmaceutical Sciences, Osaka University , 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| |
Collapse
|
27
|
Burilov VA, Ibragimova RR, Nugmanov RI, Sitdikov RR, Islamov DR, Kataeva ON, Solov’eva SE, Antipin IS. Effect of copper(I) on the conformation of the thiacalixarene platform in azide-alkyne cycloaddition. Russ Chem Bull 2016. [DOI: 10.1007/s11172-015-1126-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
28
|
Singh MS, Chowdhury S, Koley S. Advances of azide-alkyne cycloaddition-click chemistry over the recent decade. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.07.044] [Citation(s) in RCA: 133] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
29
|
Wang ZX, Shi WM, Bi HY, Li XH, Su GF, Mo DL. Synthesis of N-(2-Hydroxyaryl)benzotriazoles via Metal-Free O-Arylation and N–O Bond Cleavage. J Org Chem 2016; 81:8014-21. [DOI: 10.1021/acs.joc.6b01390] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhi-Xin Wang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China, School of Chemistry & Pharmaceutical Sciences, Guangxi Normal University, 15 Yu Cai Road, Guilin 541004, China
| | - Wei-Min Shi
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China, School of Chemistry & Pharmaceutical Sciences, Guangxi Normal University, 15 Yu Cai Road, Guilin 541004, China
| | - Hong-Yan Bi
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China, School of Chemistry & Pharmaceutical Sciences, Guangxi Normal University, 15 Yu Cai Road, Guilin 541004, China
| | - Xiao-Hua Li
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China, School of Chemistry & Pharmaceutical Sciences, Guangxi Normal University, 15 Yu Cai Road, Guilin 541004, China
| | - Gui-Fa Su
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China, School of Chemistry & Pharmaceutical Sciences, Guangxi Normal University, 15 Yu Cai Road, Guilin 541004, China
| | - Dong-Liang Mo
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China, School of Chemistry & Pharmaceutical Sciences, Guangxi Normal University, 15 Yu Cai Road, Guilin 541004, China
| |
Collapse
|
30
|
Romero NA, Margrey KA, Tay NE, Nicewicz DA. Site-selective arene C-H amination via photoredox catalysis. Science 2015; 349:1326-30. [PMID: 26383949 DOI: 10.1126/science.aac9895] [Citation(s) in RCA: 596] [Impact Index Per Article: 66.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Over the past several decades, organometallic cross-coupling chemistry has developed into one of the most reliable approaches to assemble complex aromatic compounds from preoxidized starting materials. More recently, transition metal-catalyzed carbon-hydrogen activation has circumvented the need for preoxidized starting materials, but this approach is limited by a lack of practical amination protocols. Here, we present a blueprint for aromatic carbon-hydrogen functionalization via photoredox catalysis and describe the utility of this strategy for arene amination. An organic photoredox-based catalyst system, consisting of an acridinium photooxidant and a nitroxyl radical, promotes site-selective amination of a variety of simple and complex aromatics with heteroaromatic azoles of interest in pharmaceutical research. We also describe the atom-economical use of ammonia to form anilines, without the need for prefunctionalization of the aromatic component.
Collapse
Affiliation(s)
- Nathan A Romero
- Department of Chemistry, University of North Carolina-Chapel Hill, Chapel Hill, NC 27599-3290, USA
| | - Kaila A Margrey
- Department of Chemistry, University of North Carolina-Chapel Hill, Chapel Hill, NC 27599-3290, USA
| | - Nicholas E Tay
- Department of Chemistry, University of North Carolina-Chapel Hill, Chapel Hill, NC 27599-3290, USA
| | - David A Nicewicz
- Department of Chemistry, University of North Carolina-Chapel Hill, Chapel Hill, NC 27599-3290, USA.
| |
Collapse
|
31
|
Mu WH, Xia SY, Li JX, Fang DC, Wei G, Chass GA. Competing Mechanisms, Substituent Effects, and Regioselectivities of Nickel-Catalyzed [2 + 2 + 2] Cycloaddition between Carboryne and Alkynes: A DFT Study. J Org Chem 2015; 80:9108-17. [PMID: 26270257 DOI: 10.1021/acs.joc.5b01464] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wei-Hua Mu
- Faculty
of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650092, Yunnan, China
| | - Shu-Ya Xia
- Faculty
of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650092, Yunnan, China
| | - Ji-Xiang Li
- Faculty
of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650092, Yunnan, China
| | - De-Cai Fang
- Key
Laboratory of Theoretical and Computational Photochemistry, Ministry
of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Gang Wei
- CSIRO Manufacturing Flagship, Bradfield Road, West Lindfield, P.O. Box 218, Lindfield, NSW 2070, Australia
| | - Gregory A Chass
- School
of Biological and Chemical Sciences, Queen Mary University of London, London E1 4NS, U.K
| |
Collapse
|
32
|
Ikawa T, Yamamoto R, Takagi A, Ito T, Shimizu K, Goto M, Hamashima Y, Akai S. 2-[(Neopentyl glycolato)boryl]phenyl Triflates and Halides for Fluoride Ion-Mediated Generation of Functionalized Benzynes. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500315] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
33
|
Sibbel F, Daniliuc CG, Studer A. 2,2′-Bis-substituted Biphenyls by the Addition of Nucleophiles to Benzyne Followed by In Situ Oxidative Homocoupling. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500456] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
34
|
Chen Q, Yu H, Xu Z, Lin L, Jiang X, Wang R. Development and Application of O-(Trimethylsilyl)aryl Fluorosulfates for the Synthesis of Arynes. J Org Chem 2015; 80:6890-6. [DOI: 10.1021/acs.joc.5b00923] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Qiao Chen
- Institute
of New Drugs Design and Synthesis, Key Laboratory of Preclinical Study
for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Hongmei Yu
- Institute
of New Drugs Design and Synthesis, Key Laboratory of Preclinical Study
for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Zhaoqing Xu
- Institute
of New Drugs Design and Synthesis, Key Laboratory of Preclinical Study
for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Li Lin
- Institute
of New Drugs Design and Synthesis, Key Laboratory of Preclinical Study
for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Xianxing Jiang
- School
of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Rui Wang
- Institute
of New Drugs Design and Synthesis, Key Laboratory of Preclinical Study
for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| |
Collapse
|
35
|
Chang D, Zhu D, Shi L. [3 + 2] Cycloadditions of Azides with Arynes via Photolysis of Phthaloyl Peroxide Derivatives. J Org Chem 2015; 80:5928-33. [DOI: 10.1021/acs.joc.5b00517] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Denghu Chang
- Institute of Organic Chemistry,
The Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin 150080, China
| | - Dan Zhu
- Institute of Organic Chemistry,
The Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin 150080, China
| | - Lei Shi
- Institute of Organic Chemistry,
The Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin 150080, China
| |
Collapse
|
36
|
Miki K, Inoue T, Kobayashi Y, Nakano K, Matsuoka H, Yamauchi F, Yano T, Ohe K. Near-Infrared Dye-Conjugated Amphiphilic Hyaluronic Acid Derivatives as a Dual Contrast Agent for In Vivo Optical and Photoacoustic Tumor Imaging. Biomacromolecules 2014; 16:219-27. [DOI: 10.1021/bm501438e] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
| | | | | | | | | | - Fumio Yamauchi
- Corporate R&D Headquarters, Canon, Inc., 30-2, Shimomaruko 3-chome, Ohta-ku, Tokyo 146-8501, Japan
| | - Tetsuya Yano
- Corporate R&D Headquarters, Canon, Inc., 30-2, Shimomaruko 3-chome, Ohta-ku, Tokyo 146-8501, Japan
| | | |
Collapse
|
37
|
Sadler S, Sebeika MM, Kern NL, Bell DE, Laverack CA, Wilkins DJ, Moeller AR, Nicolaysen BC, Kozlowski PN, Wiles C, Tinder RJ, Jones GB. A Facile Route to Triazolopyrimidines Using a [3+2] Cycloaddition and Continuous-Flow Chemistry. J Flow Chem 2014. [DOI: 10.1556/jfc-d-14-00019] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|