1
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Delaney CP, Marron DP, Shved AS, Zare RN, Waymouth RM, Denmark SE. Potassium Trimethylsilanolate-Promoted, Anhydrous Suzuki-Miyaura Cross-Coupling Reaction Proceeds via the "Boronate Mechanism": Evidence for the Alternative Fork in the Trail. J Am Chem Soc 2022; 144:4345-4364. [PMID: 35230833 PMCID: PMC8930609 DOI: 10.1021/jacs.1c08283] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Previous studies have shown that the critical transmetalation step in the Suzuki-Miyaura cross-coupling proceeds through a mechanism wherein an arylpalladium hydroxide complex reacts with an aryl boronic acid, termed the oxo-palladium pathway. Moreover, these same studies have established that the reaction between an aryl boronate and an arylpalladium halide complex (the boronate pathway) is prohibitively slow. Herein, studies on isolated intermediates, along with kinetic analysis, have demonstrated that the Suzuki-Miyaura reaction promoted by potassium trimethylsilanolate (TMSOK) proceeds through the boronate pathway, in contrast with other, established systems. Furthermore, an unprecedented, binuclear palladium(I) complex containing a μ-phenyl bridging ligand was characterized by NMR spectroscopy, mass spectrometry, and computational methods. Density functional theory (DFT) calculations suggest that the binuclear complex exhibits an open-shell ground electronic state, and reaction kinetics implicate the complex in the catalytic cycle. These results expand the breadth of potential mechanisms by which the Suzuki-Miyaura reaction can occur, and the novel binuclear palladium complex discovered has broad implications for palladium-mediated cross-coupling reactions of aryl halides.
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Affiliation(s)
- Connor P Delaney
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Daniel P Marron
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Alexander S Shved
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Richard N Zare
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Robert M Waymouth
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Scott E Denmark
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
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2
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Huang W, Xue JY. Transition metal-free domino aryl-aryl coupling/phospha-Michael addition of diarylphosphinite to α,β-unsaturated ketones triggered by alkaline hydrolysis of (4-(2-alkenoyl)phenyl)triarylphosphonium salts. PHOSPHORUS SULFUR 2022. [DOI: 10.1080/10426507.2021.1995385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Wenhua Huang
- Department of Chemistry, Tianjin University, Tianjin, China
| | - Jing-Yu Xue
- Department of Chemistry, Tianjin University, Tianjin, China
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3
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Duttwyler S, Liu F, Chen T, Zhang K, Jiang T, Liu J. Sonogashira Coupling of the Ethynyl Monocarborane [CB11H11-12-CCH]–. Dalton Trans 2022; 51:10880-10886. [DOI: 10.1039/d2dt01048h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Sonogashira cross coupling between the monocarborane cluster 12-ethynylmonocarba-closo-dodecaborate [CB11H11-12-CCH]– and bromoarenes under Pd catalysis has been developed, providing access to aryl carboranyl alkynes in yields of 42–95%. The transformations...
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4
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Xiao HX, Hsu WY, Liang SW, Guo Y, Lee WC, Lu IC, Chang YC. Bulky Di(1-adamantyl)phosphinous Acid-Ligated Pd(II) Precatalysts for Suzuki Reactions of Unreactive Aryl Chlorides. ACS OMEGA 2021; 6:35134-35143. [PMID: 34963994 PMCID: PMC8697604 DOI: 10.1021/acsomega.1c06430] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 11/25/2021] [Indexed: 06/14/2023]
Abstract
Di(1-adamantyl)phosphine oxide (SPO-Ad: Ad2P(V)(=O)H), a stable tautomer of di(1-adamantyl)phosphinous acid (PA-Ad: Ad2P(III)-OH), was employed to synthesize two new PA-Ad-coordinated complexes, POPd-Ad and POPd2-Ad. POPd-Ad was easily transformed from POPd2-Ad in acetonitrile, and the [M - H]- ion of the deprotonated POPd-Ad was observed in the electrospray ionization-mass spectrum of POPd2-Ad. Both complexes are effective precatalysts for the Suzuki reaction of aryl chlorides. The reduction of Pd(II) in POPd-Ad and POPd2-Ad by arylboronic acid was examined, and the ideal Pd-to-PA ratio in the Suzuki reaction was found to be 1:1. The effect of temperature on the catalytic yields was studied to examine the possible ligation state of the active species and the dimer-to-monomer process of POPd2-Ad. Mononuclear and mono-ligated Pd species was assumed to be catalytically active. The electronic and steric effects of PA-Ad were slightly better than those reported for PA-tBu ( t Bu2P(III)-OH). Density functional theory calculations were performed to evaluate the formation of mono-ligated and mononuclear Pd species from POPd-Ad and POPd2-Ad. Furthermore, the reaction time and catalyst loading could be reduced for the reported POPd1-tBu precatalyst using the optimized reaction conditions for POPd-Ad. The complexes synthesized in this extensive study will complement the existing SPO-coordinated POPd series of precatalysts.
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Affiliation(s)
- He-Xin Xiao
- Department
of Applied Chemistry, Providence University, 200, Sec. 7, Taiwan Boulevard, Shalu
Dist., Taichung City 43301, Taiwan
| | - Wan-Yun Hsu
- Department
of Applied Chemistry, Providence University, 200, Sec. 7, Taiwan Boulevard, Shalu
Dist., Taichung City 43301, Taiwan
| | - Siou-Wei Liang
- Department
of Applied Chemistry, Providence University, 200, Sec. 7, Taiwan Boulevard, Shalu
Dist., Taichung City 43301, Taiwan
| | - Yingjie Guo
- Department
of Cosmetic Science, Providence University, 200, Sec. 7, Taiwan Boulevard, Shalu
Dist., Taichung City 43301, Taiwan
| | - Wan-Ching Lee
- Department
of Chemistry, National Chung Hsing University, 145 Xingda Rd., South Dist., Taichung City40227, Taiwan
| | - I-Chung Lu
- Department
of Chemistry, National Chung Hsing University, 145 Xingda Rd., South Dist., Taichung City40227, Taiwan
| | - Yu-Chang Chang
- Department
of Applied Chemistry, Providence University, 200, Sec. 7, Taiwan Boulevard, Shalu
Dist., Taichung City 43301, Taiwan
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5
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Sosnovskikh VY. Synthesis and reactivity of 3-(1-alkynyl)chromones. RUSSIAN CHEMICAL REVIEWS 2021. [DOI: 10.1070/rcr5008] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
For the first time, the literature data on the methods of synthesis and reactivity of 3-(1-alkynyl)chromones are summarized and systematized. The main method for obtaining these compounds is the Sonogashira cross-coupling reaction of 3-halochromones with terminal acetylenes, and their most important chemical properties include the transformation into furans, reactions with dinucleophiles, ambiphilic [4+2]- and [4+3]-cyclizations, and also dimerization and mixed condensation of 2-methyl-3-(1-alkynyl)chromones due to the vinylogous methyl group. Except for the oxacyclization to furans, chemical transformations of 3-(1-alkynyl)chromones are accompanied by pyrone ring transformation, in which not only the carbonyl group but also the triple bond can participate. This significantly increases the synthetic value of these compounds and ensures the production of more complex heterocyclic systems based on them. The mechanisms of the reactions are discussed, the conditions for their implementation and the yields of the resulting products are indicated.
The bibliography includes 80 references.
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6
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Khan I, Ibrar A, Zaib S. Alkynoates as Versatile and Powerful Chemical Tools for the Rapid Assembly of Diverse Heterocycles under Transition-Metal Catalysis: Recent Developments and Challenges. Top Curr Chem (Cham) 2021; 379:3. [PMID: 33398642 DOI: 10.1007/s41061-020-00316-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Accepted: 11/16/2020] [Indexed: 12/15/2022]
Abstract
Heterocycles, heteroaromatics and spirocyclic entities are ubiquitous components of a wide plethora of synthetic drugs, biologically active natural products, marketed pharmaceuticals and agrochemical targets. Recognizing their high proportion in drugs and rich pharmacological potential, these invaluable structural motifs have garnered significant interest, thus enabling the development of efficient catalytic methodologies providing access to architecturally complex and diverse molecules with high atom-economy and low cost. These chemical processes not only allow the formation of diverse heterocycles but also utilize a range of flexible and easily accessible building units in a single operation to discover diversity-oriented synthetic approaches. Alkynoates are significantly important, diverse and powerful building blocks in organic chemistry due to their unique and inherent properties such as the electronic bias on carbon-carbon triple bonds posed by electron-withdrawing groups or the metallic coordination site provided by carbonyl groups. The present review highlights the comprehensive picture of the utility of alkynoates (2007-2019) for the synthesis of various heterocycles (> 50 types) using transition-metal catalysts (Ru, Rh, Pd, Ir, Ag, Au, Pt, Cu, Mn, Fe) in various forms. The valuable function of versatile alkynoates (bearing multifunctional groups) as simple and useful starting materials is explored, thus cyclizing with an array of coupling partners to deliver a broad range of oxygen-, nitrogen-, sulfur-containing heterocycles alongside fused-, and spiro-heterocyclic compounds. In addition, these examples will also focus the scope and reaction limitations, as well as mechanistic investigations into the synthesis of these heterocycles. The biological significance will also be discussed, citing relevant examples of drug molecules highlighting each class of heterocycles. This review summarizes the recent developments in the synthetic methods for the synthesis of various heterocycles using alkynoates as readily available starting materials under transition-metal catalysis.
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Affiliation(s)
- Imtiaz Khan
- Department of Chemistry, School of Natural Sciences, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK.
- Manchester Institute of Biotechnology, The University of Manchester, 131 Princess Street, Manchester, M1 7DN, UK.
| | - Aliya Ibrar
- Department of Chemistry, Faculty of Natural Sciences, The University of Haripur, Haripur, KPK-22620, Pakistan
| | - Sumera Zaib
- Department of Biochemistry, Faculty of Life Sciences, University of Central Punjab, Lahore, 54590, Pakistan
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7
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Dindarloo Inaloo I, Majnooni S, Eslahi H, Esmaeilpour M. Air‐Stable Fe
3
O
4
@SiO
2
‐EDTA‐Ni(0) as an Efficient Recyclable Magnetic Nanocatalyst for Effective Suzuki‐Miyaura and Heck Cross‐Coupling via Aryl Sulfamates and Carbamates. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5662] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Sahar Majnooni
- Department of Chemistry University of Isfahan Isfahan 81746‐73441 Iran
| | - Hassan Eslahi
- Chemistry Department, College of Sciences Shiraz University Shiraz Iran
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8
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Wu X, Jia M, Huang M, Kim JK, Zhao Z, Liu J, Xi J, Li Y, Wu Y. A visible-light-induced “on–off” one-pot synthesis of 3-arylacetylene coumarins with AIE properties. Org Biomol Chem 2020; 18:3346-3353. [DOI: 10.1039/d0ob00479k] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A mild one-pot approach to 3-arylacetylene coumarins with potential AIE activities was developed via photosensitizer-free photocatalysis and thermocatalysis.
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Affiliation(s)
- Xinjie Wu
- College of Chemistry
- Henan Key Laboratory of Chemical Biology and Organic Chemistry
- Key Laboratory of Applied Chemistry of Henan Universities
- Zhengzhou University
- Zhengzhou
| | - Ming Jia
- School of Materials Science and Engineering
- Zhengzhou University
- Zhengzhou 450052
- P.R. China
| | - Mengmeng Huang
- College of Chemistry
- Henan Key Laboratory of Chemical Biology and Organic Chemistry
- Key Laboratory of Applied Chemistry of Henan Universities
- Zhengzhou University
- Zhengzhou
| | - Jung Keun Kim
- College of Chemistry
- Henan Key Laboratory of Chemical Biology and Organic Chemistry
- Key Laboratory of Applied Chemistry of Henan Universities
- Zhengzhou University
- Zhengzhou
| | - Zheng Zhao
- Department of Chemistry
- The Hong Kong University of Science and Technology
- P.R. China
| | - Junkai Liu
- Department of Chemistry
- The Hong Kong University of Science and Technology
- P.R. China
| | - Jinhu Xi
- College of Chemistry
- Henan Key Laboratory of Chemical Biology and Organic Chemistry
- Key Laboratory of Applied Chemistry of Henan Universities
- Zhengzhou University
- Zhengzhou
| | - Yabo Li
- College of Chemistry
- Henan Key Laboratory of Chemical Biology and Organic Chemistry
- Key Laboratory of Applied Chemistry of Henan Universities
- Zhengzhou University
- Zhengzhou
| | - Yangjie Wu
- College of Chemistry
- Henan Key Laboratory of Chemical Biology and Organic Chemistry
- Key Laboratory of Applied Chemistry of Henan Universities
- Zhengzhou University
- Zhengzhou
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9
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Optical, electrochemical and current−voltage characteristics of novel coumarin based 2,4-dinitrophenylhydrazone derivatives. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.126946] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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10
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Transition metal-catalyzed cross-coupling methodologies for the engineering of small molecules with applications in organic electronics and photovoltaics. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2019.04.007] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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11
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Kong H, Li Q, Yin Y, Huang M, Kim JK, Zhu Y, Li Y, Wu Y. An efficient light on–off one-pot method for the synthesis of 3-styryl coumarins from aryl alkynoates. Org Biomol Chem 2019; 17:4621-4628. [DOI: 10.1039/c9ob00421a] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
An efficient one-pot stepwise method to synthesize 3-styryl-4-arylcoumarins from simple alkynoates is demonstrated.
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Affiliation(s)
- Hongjun Kong
- College of Chemistry and Molecular Engineering
- Henan Key Laboratory of Chemical Biology and Organic Chemistry
- Key Laboratory of Applied Chemistry of Henan Universities
- Zhengzhou University
- Zhengzhou 450052
| | - Qingrui Li
- College of Chemistry and Molecular Engineering
- Henan Key Laboratory of Chemical Biology and Organic Chemistry
- Key Laboratory of Applied Chemistry of Henan Universities
- Zhengzhou University
- Zhengzhou 450052
| | - Yunnian Yin
- College of Chemistry and Molecular Engineering
- Henan Key Laboratory of Chemical Biology and Organic Chemistry
- Key Laboratory of Applied Chemistry of Henan Universities
- Zhengzhou University
- Zhengzhou 450052
| | - Mengmeng Huang
- College of Chemistry and Molecular Engineering
- Henan Key Laboratory of Chemical Biology and Organic Chemistry
- Key Laboratory of Applied Chemistry of Henan Universities
- Zhengzhou University
- Zhengzhou 450052
| | - Jung Keun Kim
- College of Chemistry and Molecular Engineering
- Henan Key Laboratory of Chemical Biology and Organic Chemistry
- Key Laboratory of Applied Chemistry of Henan Universities
- Zhengzhou University
- Zhengzhou 450052
| | - Yu Zhu
- College of Chemistry and Molecular Engineering
- Henan Key Laboratory of Chemical Biology and Organic Chemistry
- Key Laboratory of Applied Chemistry of Henan Universities
- Zhengzhou University
- Zhengzhou 450052
| | - Yabo Li
- College of Chemistry and Molecular Engineering
- Henan Key Laboratory of Chemical Biology and Organic Chemistry
- Key Laboratory of Applied Chemistry of Henan Universities
- Zhengzhou University
- Zhengzhou 450052
| | - Yangjie Wu
- College of Chemistry and Molecular Engineering
- Henan Key Laboratory of Chemical Biology and Organic Chemistry
- Key Laboratory of Applied Chemistry of Henan Universities
- Zhengzhou University
- Zhengzhou 450052
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12
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Thummala Y, Morri AK, Karunakar GV, Doddi VR. DBU-Mediated Efficient Synthesis of Diaryl Ethynes and Enynes from 1,1-Dibromoalkenes at Room Temperature. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801143] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yadagiri Thummala
- Organic and Biomolecular Chemistry Division; CSIR-Indian Institute of Chemical Technology (CSIR-IICT); 500007 Hyderabad India
| | - Ashok K. Morri
- Organic and Biomolecular Chemistry Division; CSIR-Indian Institute of Chemical Technology (CSIR-IICT); 500007 Hyderabad India
| | - Galla V. Karunakar
- Organic and Biomolecular Chemistry Division; CSIR-Indian Institute of Chemical Technology (CSIR-IICT); 500007 Hyderabad India
| | - Venkata Ramana Doddi
- Organic and Biomolecular Chemistry Division; CSIR-Indian Institute of Chemical Technology (CSIR-IICT); 500007 Hyderabad India
- Department of Chemistry and Chemical Sciences; Central University of Jammu; Jammu India
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13
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Affiliation(s)
- Teresa L. Mako
- Department of Chemistry, University of Rhode Island, 140 Flagg Road, Kingston, Rhode Island 02881, United States
| | - Joan M. Racicot
- Department of Chemistry, University of Rhode Island, 140 Flagg Road, Kingston, Rhode Island 02881, United States
| | - Mindy Levine
- Department of Chemistry, University of Rhode Island, 140 Flagg Road, Kingston, Rhode Island 02881, United States
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14
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Chaudhuri S, Carrick JD. Synthetic Access to Functionalized Dipolarophiles of Lewis Basic Complexant Scaffolds through Sonogashira Cross-Coupling. J Org Chem 2018; 83:10261-10271. [PMID: 30016113 DOI: 10.1021/acs.joc.8b01446] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Soft Lewis basic complexants that facilitate selective removal of discrete ions resident in spent nuclear fuel can decrease repository volume and radiotoxicity and are of significant interest. Optimization of chelation efficacy is predicated on modular access to synthons to rapidly evaluate structure-activity relationships. The following work highlights efficient access to functionalized synthons for use as potential dipolarophiles in subsequent cycloaddition processes via Sonogashira coupling of 3-(6-bromo-pyridin-2-yl)-[1,2,4]triazine scaffolds. The 41 examples explored during method development evaluated electrophile and nucleophile diversity affording the desired coupled products in 31-96% isolated yield. Method optimization, substrate scope, a scale-up reaction, and downstream product functionalization are reported herein.
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Affiliation(s)
- Sauradip Chaudhuri
- Department of Chemistry , Tennessee Technological University , 55 University Drive , Cookeville , Tennessee 38505-0001 , United States
| | - Jesse D Carrick
- Department of Chemistry , Tennessee Technological University , 55 University Drive , Cookeville , Tennessee 38505-0001 , United States
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15
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Schroeter F, Strassner T. Understanding Anionic “Ligandless” Palladium Species in the Mizoroki–Heck Reaction. Inorg Chem 2018; 57:5159-5173. [DOI: 10.1021/acs.inorgchem.8b00175] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Felix Schroeter
- Physikalische Organische Chemie, TU Dresden, Bergstrasse 66, 01062 Dresden, Germany
| | - Thomas Strassner
- Physikalische Organische Chemie, TU Dresden, Bergstrasse 66, 01062 Dresden, Germany
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16
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Solleder SC, Schneider RV, Wetzel KS, Boukis AC, Meier MAR. Recent Progress in the Design of Monodisperse, Sequence-Defined Macromolecules. Macromol Rapid Commun 2017; 38. [DOI: 10.1002/marc.201600711] [Citation(s) in RCA: 137] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Revised: 01/25/2017] [Indexed: 12/28/2022]
Affiliation(s)
- Susanne C. Solleder
- Karlsruhe Institute of Technology (KIT); Institute of Organic Chemistry (IOC); Materialwissenschaftliches Zentrum für Energiesysteme (MZE); Geb. 30.48, Straße am Forum 7 76131 Karlsruhe Germany
| | - Rebekka V. Schneider
- Karlsruhe Institute of Technology (KIT); Institute of Organic Chemistry (IOC); Materialwissenschaftliches Zentrum für Energiesysteme (MZE); Geb. 30.48, Straße am Forum 7 76131 Karlsruhe Germany
| | - Katharina S. Wetzel
- Karlsruhe Institute of Technology (KIT); Institute of Organic Chemistry (IOC); Materialwissenschaftliches Zentrum für Energiesysteme (MZE); Geb. 30.48, Straße am Forum 7 76131 Karlsruhe Germany
| | - Andreas C. Boukis
- Karlsruhe Institute of Technology (KIT); Institute of Organic Chemistry (IOC); Materialwissenschaftliches Zentrum für Energiesysteme (MZE); Geb. 30.48, Straße am Forum 7 76131 Karlsruhe Germany
| | - Michael A. R. Meier
- Karlsruhe Institute of Technology (KIT); Institute of Organic Chemistry (IOC); Materialwissenschaftliches Zentrum für Energiesysteme (MZE); Geb. 30.48, Straße am Forum 7 76131 Karlsruhe Germany
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17
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Mak AM, Lim YH, Jong H, Yang Y, Johannes CW, Robins EG, Sullivan MB. Mechanistic Insights and Implications of Dearomative Rearrangement in Copper-Free Sonogashira Cross-Coupling Catalyzed by Pd-Cy*Phine. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00186] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Adrian M. Mak
- Institute of High Performance Computing, 1 Fusionopolis Way, #16-16 Connexis, Singapore 138632, Singapore
| | - Yee Hwee Lim
- Institute of Chemical and Engineering Sciences, 8 Biomedical Grove, Neuros #07-01, Singapore 138665, Singapore
| | - Howard Jong
- Institute of Chemical and Engineering Sciences, 8 Biomedical Grove, Neuros #07-01, Singapore 138665, Singapore
| | - Yong Yang
- Institute of Chemical and Engineering Sciences, 8 Biomedical Grove, Neuros #07-01, Singapore 138665, Singapore
| | - Charles W. Johannes
- Institute of Chemical and Engineering Sciences, 8 Biomedical Grove, Neuros #07-01, Singapore 138665, Singapore
| | - Edward G. Robins
- Singapore Bioimaging Consortium, 11 Biopolis Way, Helios #02-02, Singapore 138667, Singapore
| | - Michael B. Sullivan
- Institute of High Performance Computing, 1 Fusionopolis Way, #16-16 Connexis, Singapore 138632, Singapore
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18
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Glöcklhofer F, Lunzer M, Stöger B, Fröhlich J. A Versatile One-Pot Access to Cyanoarenes from ortho
- and para
-Quinones: Paving the Way for Cyanated Functional Materials. Chemistry 2016; 22:5173-80. [PMID: 26928957 DOI: 10.1002/chem.201600004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2016] [Indexed: 11/07/2022]
Affiliation(s)
- Florian Glöcklhofer
- Institute of Applied Synthetic Chemistry; TU Wien; Getreidemarkt 9/163 1060 Vienna Austria
| | - Markus Lunzer
- Institute of Applied Synthetic Chemistry; TU Wien; Getreidemarkt 9/163 1060 Vienna Austria
| | - Berthold Stöger
- Institute of Chemical Technologies and Analytics; TU Wien; Getreidemarkt 9/164 1060 Vienna Austria
| | - Johannes Fröhlich
- Institute of Applied Synthetic Chemistry; TU Wien; Getreidemarkt 9/163 1060 Vienna Austria
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19
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Joy MN, Bodke YD, Khader KA, Sajith AM, Venkatesh T, Kumar AA. Simultaneous exploration of TBAF·3H 2 O as a base as well as a solvating agent for the palladium catalyzed Suzuki cross-coupling of 4-methyl-7-nonafluorobutylsulfonyloxy coumarins under microwave irradiation. J Fluor Chem 2016. [DOI: 10.1016/j.jfluchem.2016.01.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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20
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Ishidoshiro M, Imoto H, Tanaka S, Naka K. An experimental study on arsoles: structural variation, optical and electronic properties, and emission behavior. Dalton Trans 2016; 45:8717-23. [DOI: 10.1039/c6dt01010e] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The attractive properties of arsoles have been theoretically studied, while experimental studies have been avoided. The practical synthesis of arsoles has realized not only the experimental proof but also novel observation.
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Affiliation(s)
- Makoto Ishidoshiro
- Faculty of Molecular Chemistry and Engineering
- Graduate School of Science and Technology
- Kyoto Institute of Technology
- Sakyo-ku
- Japan
| | - Hiroaki Imoto
- Faculty of Molecular Chemistry and Engineering
- Graduate School of Science and Technology
- Kyoto Institute of Technology
- Sakyo-ku
- Japan
| | - Susumu Tanaka
- Faculty of Molecular Chemistry and Engineering
- Graduate School of Science and Technology
- Kyoto Institute of Technology
- Sakyo-ku
- Japan
| | - Kensuke Naka
- Faculty of Molecular Chemistry and Engineering
- Graduate School of Science and Technology
- Kyoto Institute of Technology
- Sakyo-ku
- Japan
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21
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Pradhan S, Dutta S, John RP. A coordination driven self-assembled Pd6L8 nanoball catalyses copper and phosphine-free Sonogashira coupling reaction in both homogeneous and heterogeneous formats. NEW J CHEM 2016. [DOI: 10.1039/c5nj03658e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
A self-assembled Pd6L8 nanocage catalysed copper free Sonogashira reaction under mild and aerobic conditions, at 100 ppm catalyst loading in aqueous medium in the homogeneous phase, and at 500 ppm in the heterogeneous phase.
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Affiliation(s)
- Subhashis Pradhan
- Department of Applied Chemistry
- Indian School of Mines
- Dhanbad-826004
- India
| | - Subhadip Dutta
- Department of Applied Chemistry
- Indian School of Mines
- Dhanbad-826004
- India
| | - Rohith P. John
- Department of Applied Chemistry
- Indian School of Mines
- Dhanbad-826004
- India
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22
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Yang Y, Lim YH, Robins EG, Johannes CW. Decarboxylative/Sonogashira-type cross-coupling using PdCl2(Cy*Phine)2. RSC Adv 2016. [DOI: 10.1039/c6ra12916a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Expedient protocol to access a wide range of internal alkynes and symmetrical di(heteroaryl)alkynes via tandem decarboxylative–Sonogashira cross-coupling.
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Affiliation(s)
- Yong Yang
- Organic Chemistry
- Institute of Chemical & Engineering Sciences (ICES)
- Agency of Science, Technology and Research (A*STAR)
- Singapore 138665
| | - Yee Hwee Lim
- Organic Chemistry
- Institute of Chemical & Engineering Sciences (ICES)
- Agency of Science, Technology and Research (A*STAR)
- Singapore 138665
| | - Edward G. Robins
- Singapore Bioimaging Consortium (SBIC)
- Agency of Science, Technology and Research (A*STAR)
- Singapore 138667
| | - Charles W. Johannes
- Organic Chemistry
- Institute of Chemical & Engineering Sciences (ICES)
- Agency of Science, Technology and Research (A*STAR)
- Singapore 138665
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23
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Tay DW, Jong H, Lim YH, Wu W, Chew X, Robins EG, Johannes CW. Palladium-meta-Terarylphosphine Catalyst for the Mizoroki–Heck Reaction of (Hetero)Aryl Bromides and Functional Olefins. J Org Chem 2015; 80:4054-63. [DOI: 10.1021/acs.joc.5b00386] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Daniel Weiliang Tay
- Singapore
Bioimaging Consortium (SBIC), Agency of Science, Technology and Research (A*STAR), 11 Biopolis Way, Helios, #01-02, Singapore 138667
| | - Howard Jong
- Organic Chemistry, Institute of Chemical & Engineering Sciences (ICES), Agency of Science, Technology and Research (A*STAR), 11 Biopolis Way, Helios, #03-08, Singapore 138667
| | - Yee Hwee Lim
- Organic Chemistry, Institute of Chemical & Engineering Sciences (ICES), Agency of Science, Technology and Research (A*STAR), 11 Biopolis Way, Helios, #03-08, Singapore 138667
| | - Wenqin Wu
- Organic Chemistry, Institute of Chemical & Engineering Sciences (ICES), Agency of Science, Technology and Research (A*STAR), 11 Biopolis Way, Helios, #03-08, Singapore 138667
| | - Xinying Chew
- Organic Chemistry, Institute of Chemical & Engineering Sciences (ICES), Agency of Science, Technology and Research (A*STAR), 11 Biopolis Way, Helios, #03-08, Singapore 138667
| | - Edward G. Robins
- Singapore
Bioimaging Consortium (SBIC), Agency of Science, Technology and Research (A*STAR), 11 Biopolis Way, Helios, #01-02, Singapore 138667
| | - Charles W. Johannes
- Organic Chemistry, Institute of Chemical & Engineering Sciences (ICES), Agency of Science, Technology and Research (A*STAR), 11 Biopolis Way, Helios, #03-08, Singapore 138667
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24
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Annapurna M, Parsharamulu T, Vishnuvardhan Reddy P, Suresh M, Likhar PR, Lakshmi Kantam M. Nano palladium supported on high-surface-area metal-organic framework MIL-101: an efficient catalyst for Sonogashira coupling of aryl and heteroaryl bromides with alkynes. Appl Organomet Chem 2015. [DOI: 10.1002/aoc.3277] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Manne Annapurna
- Inorganic and Physical Chemistry Division; CSIR-Indian Institute of Chemical Technology (CSIR-IICT); Tarnaka Hyderabad 500007 India
| | - T. Parsharamulu
- Inorganic and Physical Chemistry Division; CSIR-Indian Institute of Chemical Technology (CSIR-IICT); Tarnaka Hyderabad 500007 India
| | - P. Vishnuvardhan Reddy
- Inorganic and Physical Chemistry Division; CSIR-Indian Institute of Chemical Technology (CSIR-IICT); Tarnaka Hyderabad 500007 India
| | - M. Suresh
- Inorganic and Physical Chemistry Division; CSIR-Indian Institute of Chemical Technology (CSIR-IICT); Tarnaka Hyderabad 500007 India
| | - Pravin R. Likhar
- Inorganic and Physical Chemistry Division; CSIR-Indian Institute of Chemical Technology (CSIR-IICT); Tarnaka Hyderabad 500007 India
| | - Mannepalli Lakshmi Kantam
- Inorganic and Physical Chemistry Division; CSIR-Indian Institute of Chemical Technology (CSIR-IICT); Tarnaka Hyderabad 500007 India
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25
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Das S, Samanta S, Ray S, Biswas P. 3,6-Di(pyridin-2-yl)-1,2,4,5-tetrazine capped Pd(0) nanoparticles: a catalyst for copper-free Sonogashira coupling of aryl halides in aqueous medium. RSC Adv 2015. [DOI: 10.1039/c5ra13252e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
3,6-Di(pyridin-2-yl)-1,2,4,5-tetrazine (pytz) capped Pd(0) nanoparticles (TzPdNPs) act as a catalyst in Sonogashira coupling under copper- and ligand-free conditions in aqueous medium.
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Affiliation(s)
- Sudipto Das
- Department of Chemistry
- Indian Institute of Engineering Science and Technology
- Howrah
- India
| | - Suvendu Samanta
- Department of Chemistry
- Indian Institute of Engineering Science and Technology
- Howrah
- India
| | - Shounak Ray
- Department of Chemistry
- Indian Institute of Engineering Science and Technology
- Howrah
- India
| | - Papu Biswas
- Department of Chemistry
- Indian Institute of Engineering Science and Technology
- Howrah
- India
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26
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Roussaki M, Zelianaios K, Kavetsou E, Hamilakis S, Hadjipavlou-Litina D, Kontogiorgis C, Liargkova T, Detsi A. Structural modifications of coumarin derivatives: Determination of antioxidant and lipoxygenase (LOX) inhibitory activity. Bioorg Med Chem 2014; 22:6586-6594. [PMID: 25456384 DOI: 10.1016/j.bmc.2014.10.008] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Revised: 09/29/2014] [Accepted: 10/09/2014] [Indexed: 02/03/2023]
Abstract
In the present project, a series of coumarin analogues, were synthesised and evaluated for their antioxidant and soybean lipoxygenase inhibitory activity. A variety of structural modifications on the coumarin scaffold revealed interesting structure–activity relationships concerning the different biological assays. Prenyloxy-coumarins 9 and 10 displayed the best combined inhibition of lipid peroxidation and soybean lipoxygenase. Thiocoumarins 11 and 14 were identified as potent lipoxygenase inhibitors whereas hydrazone analogues 15 and 16 were efficient DPPH radical scavengers.
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Affiliation(s)
- Marina Roussaki
- Laboratory of Organic Chemistry, School of Chemical Engineering, National Technical University of Athens, Heroon Polytechniou 9, Zografou Campus, GR 15773 Athens, Greece.
| | - Konstantinos Zelianaios
- Laboratory of Organic Chemistry, School of Chemical Engineering, National Technical University of Athens, Heroon Polytechniou 9, Zografou Campus, GR 15773 Athens, Greece
| | - Eleni Kavetsou
- Laboratory of Organic Chemistry, School of Chemical Engineering, National Technical University of Athens, Heroon Polytechniou 9, Zografou Campus, GR 15773 Athens, Greece
| | - Stylianos Hamilakis
- Laboratory of Organic Chemistry, School of Chemical Engineering, National Technical University of Athens, Heroon Polytechniou 9, Zografou Campus, GR 15773 Athens, Greece
| | - Dimitra Hadjipavlou-Litina
- Aristotle University of Thessaloniki, School of Pharmacy, Department of Pharmaceutical Chemistry, 54124 Thessaloniki, Greece
| | - Christos Kontogiorgis
- Aristotle University of Thessaloniki, School of Pharmacy, Department of Pharmaceutical Chemistry, 54124 Thessaloniki, Greece
| | - Thalia Liargkova
- Aristotle University of Thessaloniki, School of Pharmacy, Department of Pharmaceutical Chemistry, 54124 Thessaloniki, Greece
| | - Anastasia Detsi
- Laboratory of Organic Chemistry, School of Chemical Engineering, National Technical University of Athens, Heroon Polytechniou 9, Zografou Campus, GR 15773 Athens, Greece
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27
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Yang Y, Chew X, Johannes CW, Robins EG, Jong H, Lim YH. A Versatile and Efficient Palladium-meta-Terarylphosphine Catalyst for the Copper-Free Sonogashira Coupling of (Hetero-)Aryl Chlorides and Alkynes. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402699] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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28
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Das DK, Sarkar S, Khan M, Belal M, Khan AT. A mild and efficient method for large scale synthesis of 3-aminocoumarins and its further application for the preparation of 4-bromo-3-aminocoumarins. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.07.035] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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29
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Rossi R, Bellina F, Lessi M, Manzini C. Development and applications of highly selective palladium-catalyzed monocoupling reactions of (cyclo)alkenes and 1,3-alkadienes bearing two or three electrophilic sites and bis(enol triflates) with terminal alkynes. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.06.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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30
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Ding MF, Chen CP, Lin ST. Alumina as a Support and Catalyst for the Synthesis of Benzothiazoles in Solvent-free Condition. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.201200413] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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31
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[Pd(PPh3)2(saccharinate)2]—general catalyst for Suzuki–Miyaura, Negishi cross-coupling and C–H bond functionalization of coumaryl and pyrone substrates. Tetrahedron 2013. [DOI: 10.1016/j.tet.2012.12.030] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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32
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Abstract
Sonogashira reaction of bromochromones and -flavones with a bromine atom on their benzene or heterocyclic ring with various terminal alkynes gave the desired products with nearly the same efficiency as the previously used iodine derivatives. The coupling reactions were performed in the presence of [tetrakis(triphenylphosphine)palladium(0)], copper(i) co-catalyst, and triethylamine, resulting in the formation of numerous hitherto unknown alkynylated oxygen heterocycles, and provide further proof for the applicability of this reaction for these O-heterocycles. Chromones with ethynyl functionality were prepared by removal of the trimethylsilyl protecting group and used as terminal alkynes in a second cross-coupling reaction.
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33
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Stefani HA, Gueogjan K, Manarin F, Farsky SH, Zukerman-Schpector J, Caracelli I, Pizano Rodrigues SR, Muscará MN, Teixeira SA, Santin JR, Machado ID, Bolonheis SM, Curi R, Vinolo MA. Synthesis, biological evaluation and molecular docking studies of 3-(triazolyl)-coumarin derivatives: Effect on inducible nitric oxide synthase. Eur J Med Chem 2012; 58:117-27. [DOI: 10.1016/j.ejmech.2012.10.010] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2012] [Revised: 10/01/2012] [Accepted: 10/07/2012] [Indexed: 12/18/2022]
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34
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Affiliation(s)
- Heinrich Lang
- Department of Inorganic
Chemistry, Institute of Chemistry, Faculty of Natural
Sciences, Chemnitz University of Technology, Straße der Nationen 62, 09111 Chemnitz, Germany
| | - Alexander Jakob
- Department of Inorganic
Chemistry, Institute of Chemistry, Faculty of Natural
Sciences, Chemnitz University of Technology, Straße der Nationen 62, 09111 Chemnitz, Germany
| | - Bianca Milde
- Department of Inorganic
Chemistry, Institute of Chemistry, Faculty of Natural
Sciences, Chemnitz University of Technology, Straße der Nationen 62, 09111 Chemnitz, Germany
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35
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Ookubo Y, Wakamiya A, Yorimitsu H, Osuka A. Synthesis of a Library of Fluorescent 2-Aryl-3-trifluoromethylnaphthofurans from Naphthols by Using a Sequential Pummerer-Annulation/Cross-Coupling Strategy and their Photophysical Properties. Chemistry 2012; 18:12690-7. [DOI: 10.1002/chem.201201261] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2012] [Indexed: 11/11/2022]
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36
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37
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Verma RK, Verma GK, Shukla G, Singh MS. InCl3 catalyzed domino route to 2H-chromene-2-ones via [4 + 2] annulation of 2-hydroxyarylaldehydes with α-oxoketene dithioacetal under solvent-free conditions. RSC Adv 2012. [DOI: 10.1039/c2ra00987k] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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38
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García-Melchor M, Pacheco MC, Nájera C, Lledós A, Ujaque G. Mechanistic Exploration of the Pd-Catalyzed Copper-Free Sonogashira Reaction. ACS Catal 2011. [DOI: 10.1021/cs200526x] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Max García-Melchor
- Departament
de Química,
Edifici Cn, Universitat Autònoma de Barcelona, E-08193 Cerdanyola del Vallès, Catalonia, Spain
| | - María C. Pacheco
- Departamento de Química
Orgánica, Universidad de Alicante, Apartado 99, E-03080 Alicante, Spain
| | - Carmen Nájera
- Departamento de Química
Orgánica, Universidad de Alicante, Apartado 99, E-03080 Alicante, Spain
| | - Agustí Lledós
- Departament
de Química,
Edifici Cn, Universitat Autònoma de Barcelona, E-08193 Cerdanyola del Vallès, Catalonia, Spain
| | - Gregori Ujaque
- Departament
de Química,
Edifici Cn, Universitat Autònoma de Barcelona, E-08193 Cerdanyola del Vallès, Catalonia, Spain
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39
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Jewett JC, Bertozzi CR. Synthesis of a fluorogenic cyclooctyne activated by Cu-free click chemistry. Org Lett 2011; 13:5937-9. [PMID: 22029411 DOI: 10.1021/ol2025026] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Cyclooctyne-based probes that become fluorescent upon reaction with azides are important targets for real-time imaging of azide-labeled biomolecules. The concise synthesis of a coumarin-conjugated cyclooctyne, coumBARAC, that undergoes a 10-fold enhancement in fluorescence quantum yield upon triazole formation with organic azides is reported. The design principles embodied in coumBARAC establish a platform for generating fluorogenic cyclooctynes suited for biological imaging.
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Affiliation(s)
- John C Jewett
- Department of Chemistry and Howard Hughes Medical Institute, University of California, Berkeley, California 94720, United States
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40
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41
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Döbele M, Wiehn MS, Bräse S. Traceless Solid-Phase Synthesis of Trifluoromethylarenes. Angew Chem Int Ed Engl 2011; 50:11533-5. [DOI: 10.1002/anie.201105446] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2011] [Indexed: 11/07/2022]
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42
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Gordo J, Avó J, Parola AJ, Lima JC, Pereira A, Branco PS. Convenient synthesis of 3-vinyl and 3-styryl coumarins. Org Lett 2011; 13:5112-5. [PMID: 21916521 DOI: 10.1021/ol201983u] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A variety of 2-hydroxy aldehydes on reaction with 3-butenoic acid afford in a one-pot reaction the corresponding 3-vinylcoumarins. As expected, extension of the delocalized π-electron system accomplished by Heck coupling reactions with aryl halides results in an increased fluorescence of the compounds whose applicability is yet to be established.
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Affiliation(s)
- Joana Gordo
- REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, FCT, Universidade Nova de Lisboa, Portugal
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43
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Belen’kii L, Gramenitskaya V, Evdokimenkova Y. The Literature of Heterocyclic Chemistry, Part X, 2005–2007. ADVANCES IN HETEROCYCLIC CHEMISTRY 2011. [DOI: 10.1016/b978-0-12-385464-3.00001-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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44
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Abstract
Allyl esters of 3-carboxylcoumarins undergo facile decarboxylative coupling at just 25-50 degrees C. This represents the first extension of decarboxylative C-C bond-forming reactions to the coupling of aromatics with sp(3)-hybridized electrophiles. Finally, the same concept can be applied to the sp(2)-sp(3) couplings of pyrones and flavones. Thus, a variety of biologically important heteroaromatics can be readily functionalized without the need for strong bases or stoichiometric organometallics that are typically required for more standard cross-coupling reactions.
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45
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Convenient copper- and solvent-free Sonogashira-type alkynylation of aryl iodides and bromides using Pd EnCat™. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2008.10.130] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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46
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Kamau SD, Hodge P, Williams RT, Stagnaro P, Conzatti L. High Throughput Synthesis of Polyesters Using Entropically Driven Ring-Opening Polymerizations. ACTA ACUST UNITED AC 2008; 10:644-54. [DOI: 10.1021/cc800073k] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Stephen D. Kamau
- Chemistry Department, University of Manchester, Oxford Road, Manchester, M13 9 Pl, U.K., and Istituto per lo Studio delle Macromolecole ISMAC, Via De Marini 6, 16149 Genova, Italy
| | - Philip Hodge
- Chemistry Department, University of Manchester, Oxford Road, Manchester, M13 9 Pl, U.K., and Istituto per lo Studio delle Macromolecole ISMAC, Via De Marini 6, 16149 Genova, Italy
| | - Richard T. Williams
- Chemistry Department, University of Manchester, Oxford Road, Manchester, M13 9 Pl, U.K., and Istituto per lo Studio delle Macromolecole ISMAC, Via De Marini 6, 16149 Genova, Italy
| | - Paola Stagnaro
- Chemistry Department, University of Manchester, Oxford Road, Manchester, M13 9 Pl, U.K., and Istituto per lo Studio delle Macromolecole ISMAC, Via De Marini 6, 16149 Genova, Italy
| | - Lucia Conzatti
- Chemistry Department, University of Manchester, Oxford Road, Manchester, M13 9 Pl, U.K., and Istituto per lo Studio delle Macromolecole ISMAC, Via De Marini 6, 16149 Genova, Italy
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47
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Königs P, Neumann O, Hackelöer K, Kataeva O, Waldvogel SR. Versatile One-Pot Synthesis of 3-Alkenylcoumarins. European J Org Chem 2008. [DOI: 10.1002/ejoc.200700819] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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48
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Le Bras G, Radanyi C, Peyrat JF, Brion JD, Alami M, Marsaud V, Stella B, Renoir JM. New novobiocin analogues as antiproliferative agents in breast cancer cells and potential inhibitors of heat shock protein 90. J Med Chem 2007; 50:6189-200. [PMID: 17979263 DOI: 10.1021/jm0707774] [Citation(s) in RCA: 113] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Selective hsp90 inhibitors simultaneously destabilize and deplete key signaling proteins involved in cell proliferation and survival, angiogenesis, and metastasis. Investigation of novobiocin analogues lacking the noviose moiety as novel inhibitors of hsp90 was carried out. A novel series of 3-aminocoumarin analogues has been produced and screened in cell proliferation, and the molecular signature of hsp90 inhibition was assessed by depletion of estrogen receptor, HER2, Raf-1, and cdk4 in human breast cancer cells. This structure-activity relationship study highlights the crucial role of the C-4 and/or C-7 positions of coumarin which appeared to be essential for degradation of hsp90 client proteins. Removal of the noviose moiety in novobiocin together with introduction of a tosyl substituent at C-4 or C-7 coumarins provides 6e and 6f as lead structures which compared favorably with novobiocin as demonstrated by enhanced rates of cell death. The processing and activation of caspases 7 and 8 and the subsequent cleavage of PARP by 6e suggest stimulation of the extrinsic apoptosis pathway.
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Affiliation(s)
- Gaëlle Le Bras
- University of Paris-Sud, CNRS, BioCIS-UMR 8076, Laboratoire de Chimie Thérapeutique, and University of Paris-Sud, 5 rue J.-B. Clément, Châtenay-Malabry, France
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49
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Rao HSP, Sivakumar S. Condensation of α-Aroylketene Dithioacetals and 2-Hydroxyarylaldehydes Results in Facile Synthesis of a Combinatorial Library of 3-Aroylcoumarins. J Org Chem 2006; 71:8715-23. [PMID: 17080998 DOI: 10.1021/jo061372e] [Citation(s) in RCA: 102] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A facile, convenient, efficient, and high yielding synthesis of a combinatorial library of 3-aroylcoumarins has been developed by the condensation of easily available alpha-aroylketene dithioacetals (AKDTAs) and 2-hydroxybenzaldehydes (salicylaldehydes)/2-hydroxy-1-naphthaldehyde in the presence of catalytic amount of piperidine in THF reflux. The condensation of ferrocene derived alpha-aroylketene dithioacetal and 2-hydroxybenzaldehyde furnished coumarin installed on a ferrocene platform.
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Affiliation(s)
- H Surya Prakash Rao
- Department of Chemistry, Pondicherry University, Pondicherry 605 014, India.
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50
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