1
|
Transition-Metal-Free Synthesis of Symmetrical 1,4-diarylsubstituted 1,3-Diynes By Iodine-Mediated Decarboxylative Homocoupling of Arylpropiolic Acids. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.153908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
2
|
Wu K, Wu C, Jia XY, Zhou L, Li QH. Highly selective cross-coupling reactions of 1,1-dibromoethylenes with alkynylaluminums for the synthesis of aryl substituted conjugated enediynes and unsymmetrical 1,3-diynes. RSC Adv 2022; 12:13314-13318. [PMID: 35520111 PMCID: PMC9062886 DOI: 10.1039/d2ra02127g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Accepted: 04/25/2022] [Indexed: 11/21/2022] Open
Abstract
A highly efficient method for the synthesis of aryl substituted conjugated enediynes and unsymmetrical 1,3-diynes via selective cross-coupling reactions of 1,1-dibromoethylenes with alkynylaluminums using the Pd(OAc)2-DPPE and Pd2(dba)3-TFP complexes as catalysts, respectively, has been successfully developed. Though the alkyl substituted conjugated enediynes and unsymmetrical 1,3-diynes were not obtained, this case is also remarkable as the same starting materials could selectively produce either aryl substituted conjugated enediynes or unsymmetrical 1,3-diynes in moderate to excellent yields (up to 99%) in the different Pd-phosphine catalytic systems.
Collapse
Affiliation(s)
- Kun Wu
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, College of Chemistry and Environment, Southwest Minzu University Chengdu 610041 P. R. China
| | - Chuan Wu
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, College of Chemistry and Environment, Southwest Minzu University Chengdu 610041 P. R. China
| | - Xiao-Ying Jia
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, College of Chemistry and Environment, Southwest Minzu University Chengdu 610041 P. R. China
| | - Lin Zhou
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, College of Chemistry and Environment, Southwest Minzu University Chengdu 610041 P. R. China
| | - Qing-Han Li
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, College of Chemistry and Environment, Southwest Minzu University Chengdu 610041 P. R. China
| |
Collapse
|
3
|
Thangarasu AK, Yadhukrishnan VO, Krishnakumar KA, Varma SS, Lankalapalli RS. Cu(I)-azidopyrrolo[3,2- d]pyrimidine Catalyzed Glaser-Hay Reaction under Mild Conditions. ACS ORGANIC & INORGANIC AU 2021; 2:3-7. [PMID: 36855403 PMCID: PMC9954286 DOI: 10.1021/acsorginorgau.1c00015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The limitation of the CuAAC "click" reaction with a 2-azidopyridine substrate, owing to its equilibrium with a tetrazole isomer, is exploited herein for its utility in the Glaser-Hay reaction. A catalytic combination of a 2-azidopyridine analogue, 4-azido-5H-pyrrolo[3,2-d]pyrimidine, and CuI afforded homocoupled products of terminal alkynes, without any trace of triazole product, under mild conditions with a broad substrate scope. Emphasis on carbohydrate-based substrates appended to a propargylic group led to 1,3-diynes in good to excellent yields.
Collapse
Affiliation(s)
- Arun K. Thangarasu
- Chemical
Sciences and Technology Division, CSIR-National
Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695019, India,Academy
of Scientific & Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Velickakathu O. Yadhukrishnan
- Chemical
Sciences and Technology Division, CSIR-National
Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695019, India
| | - K. A. Krishnakumar
- Chemical
Sciences and Technology Division, CSIR-National
Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695019, India,Academy
of Scientific & Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Sanjay Suresh Varma
- Chemical
Sciences and Technology Division, CSIR-National
Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695019, India
| | - Ravi S. Lankalapalli
- Chemical
Sciences and Technology Division, CSIR-National
Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695019, India,Academy
of Scientific & Innovative Research (AcSIR), Ghaziabad-201002, India,
| |
Collapse
|
4
|
Ali TH, Heidelberg T, Hussen RSD, Tajuddin HA. Unexpected Reactions of Terminal Alkynes in Targeted "Click Chemistry'' Coppercatalyzed Azide-alkyne Cycloadditions. Curr Org Synth 2020; 16:1143-1148. [PMID: 31984920 DOI: 10.2174/1570179416666191105152714] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2019] [Revised: 09/24/2019] [Accepted: 10/01/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND High efficiency in terms of reaction yield and purity has led to the extensive utilization of copper-catalyzed azide-alkyne cycloaddition (CuAAC) in various fields of chemistry. Its compatibility with low molecular weight alcohols promotes the application in surfactant synthesis to tackle the miscibility constraints of the reactants. OBJECTIVE For the tuning of surfactant properties, double click coupling of the antipode precursors was attempted. Failure of the CuAAC to provide the targeted product in combination with unexpected reaction outputs led to an investigation of the side reaction. METHODS The CuAAC-based coupling of sugar azide with propargyl building block in the presence of copper- (I) catalyst exclusively led to the mono-coupling product in a respectable yield of almost 80%. Besides the unexpected incomplete conversion, the loss of the remaining propargyl group, as indicated by both NMR and MS. On the other hand, application of substantial amounts of CuSO4 under reducing conditions in refluxing toluene/water furnished the alkyne dimer in a moderate yield of 43%, while no change of azide compound was noticed. RESULTS The Cu(I)-catalyst applied for azide-alkyne cycloadditions enables the homo-coupling of certain terminal alkynes at a higher temperature. Moreover, aromatic propargyl ethers may be cleaved to furnish the corresponding phenol. The copper-catalyzed coupling appeared highly sensitive towards the alkyne compound. Only selected derivatives of propargyl alcohol were successfully dimerized. CONCLUSIONS The observed failure of the Huisgen reaction for the synthesis of sugar-based surfactants may indicate non-recognized constrains of the reaction, which could affect its wide application in bioconjugation. The temperature requirement for the alternative dimerization of terminal alkynes renders this side reaction nonrelevant for typical click couplings, while narrow substrate diversity and moderate yield limit its synthetic application.
Collapse
Affiliation(s)
- Tammar H Ali
- Department of Chemistry, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
| | - Thorsten Heidelberg
- Department of Chemistry, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
| | - Rusnah S D Hussen
- Department of Chemistry, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
| | - Hairul A Tajuddin
- Department of Chemistry, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
| |
Collapse
|
5
|
Nickel-catalyzed cross-coupling of organoaluminum reagents with alkynylhalides for the synthesis of symmetrical and unsymmetrical conjugated 1,3-diynes derivatives. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2019.121040] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
|
6
|
Green SP, Wheelhouse KM, Payne AD, Hallett JP, Miller PW, Bull JA. Thermal Stability and Explosive Hazard Assessment of Diazo Compounds and Diazo Transfer Reagents. Org Process Res Dev 2019; 24:67-84. [PMID: 31983869 PMCID: PMC6972035 DOI: 10.1021/acs.oprd.9b00422] [Citation(s) in RCA: 109] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Indexed: 11/29/2022]
Abstract
Despite their wide use in academia as metal-carbene precursors, diazo compounds are often avoided in industry owing to concerns over their instability, exothermic decomposition, and potential explosive behavior. The stability of sulfonyl azides and other diazo transfer reagents is relatively well understood, but there is little reliable data available for diazo compounds. This work first collates available sensitivity and thermal analysis data for diazo transfer reagents and diazo compounds to act as an accessible reference resource. Thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), and accelerating rate calorimetry (ARC) data for the model donor/acceptor diazo compound ethyl (phenyl)diazoacetate are presented. We also present a rigorous DSC dataset with 43 other diazo compounds, enabling direct comparison to other energetic materials to provide a clear reference work to the academic and industrial chemistry communities. Interestingly, there is a wide range of onset temperatures (T onset) for this series of compounds, which varied between 75 and 160 °C. The thermal stability variation depends on the electronic effect of substituents and the amount of charge delocalization. A statistical model is demonstrated to predict the thermal stability of differently substituted phenyl diazoacetates. A maximum recommended process temperature (T D24) to avoid decomposition is estimated for selected diazo compounds. The average enthalpy of decomposition (ΔH D) for diazo compounds without other energetic functional groups is -102 kJ mol-1. Several diazo transfer reagents are analyzed using the same DSC protocol and found to have higher thermal stability, which is in general agreement with the reported values. For sulfonyl azide reagents, an average ΔH D of -201 kJ mol-1 is observed. High-quality thermal data from ARC experiments shows the initiation of decomposition for ethyl (phenyl)diazoacetate to be 60 °C, compared to that of 100 °C for the common diazo transfer reagent p-acetamidobenzenesulfonyl azide (p-ABSA). The Yoshida correlation is applied to DSC data for each diazo compound to provide an indication of both their impact sensitivity (IS) and explosivity. As a neat substance, none of the diazo compounds tested are predicted to be explosive, but many (particularly donor/acceptor diazo compounds) are predicted to be impact-sensitive. It is therefore recommended that manipulation, agitation, and other processing of neat diazo compounds are conducted with due care to avoid impacts, particularly in large quantities. The full dataset is presented to inform chemists of the nature and magnitude of hazards when using diazo compounds and diazo transfer reagents. Given the demonstrated potential for rapid heat generation and gas evolution, adequate temperature control and cautious addition of reagents that begin a reaction are strongly recommended when conducting reactions with diazo compounds.
Collapse
Affiliation(s)
- Sebastian P Green
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, White City Campus, 80 Wood Lane, London W12 0BZ, U.K.,Department of Chemical Engineering, Imperial College London, South Kensington Campus, Exhibition Road, London SW7 2AZ, U.K
| | - Katherine M Wheelhouse
- API Chemistry, Product Development & Supply and Process Safety, Pilot Plant Operations, GlaxoSmithKline, GSK Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, U.K
| | - Andrew D Payne
- API Chemistry, Product Development & Supply and Process Safety, Pilot Plant Operations, GlaxoSmithKline, GSK Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, U.K
| | - Jason P Hallett
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, Exhibition Road, London SW7 2AZ, U.K
| | - Philip W Miller
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, White City Campus, 80 Wood Lane, London W12 0BZ, U.K
| | - James A Bull
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, White City Campus, 80 Wood Lane, London W12 0BZ, U.K
| |
Collapse
|
7
|
Chakraborty D, Nandi S, Mullangi D, Haldar S, Vinod CP, Vaidhyanathan R. Cu/Cu 2O Nanoparticles Supported on a Phenol-Pyridyl COF as a Heterogeneous Catalyst for the Synthesis of Unsymmetrical Diynes via Glaser-Hay Coupling. ACS APPLIED MATERIALS & INTERFACES 2019; 11:15670-15679. [PMID: 30964266 DOI: 10.1021/acsami.9b02860] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Covalent organic frameworks (COFs) are a new class of porous crystalline polymers with a modular construct that favors functionalization. COF pores can be used to grow nanoparticles (nPs) with dramatic size reduction, stabilize them as dispersions, and provide excellent nP access. Embedding substrate binding sites in COFs can generate host-guest synergy, leading to enhanced catalytic activity. In this report, Cu/Cu2O nPs (2-3 nm) are grown on a COF, which is built by linking a phenolic trialdehyde and a triamine through Schiff bonds. Their micropores restrict the nP to exceptionally small sizes (∼2-3 nm), and the pore walls decorated with strategically positioned hydrogen-bonding phenolic groups anchor the substrates via hydrogen-bonding, whereas the basic pyridyl sites serve as cationic species to stabilize the [CuclusterCl2]2- type reactive intermediates. This composite catalyst shows high activity for Glaser-Hay heterocoupling reactions, an essential 1,3-diyne yielding reaction with widespread applicability in organic synthesis and material science. Despite their broad successes in homocoupled products, preparation of unsymmetrical 1,3-diynes is challenging due to poor selectivity. Here, our COF-based Cu catalyst shows elevated selectivity toward heterocoupling product(s) (Cu nP loading 0.0992 mol %; turn over frequency: ∼45-50; turn over number: ∼175-190). The reversible redox activity at the Cu centers has been demonstrated by carrying out X-ray photoelectron spectroscopy on the frozen reactions, whereas the crucial interactions between the substrates and the binding sites in their optimized configurations have been modeled using density functional theory methods. This report emphasizes the utility of COFs in developing a heterogeneous catalyst for a truly challenging organic heterocoupling reaction.
Collapse
|
8
|
Green SP, Payne AD, Wheelhouse KM, Hallett JP, Miller PW, Bull JA. Diazo-Transfer Reagent 2-Azido-4,6-dimethoxy-1,3,5-triazine Displays Highly Exothermic Decomposition Comparable to Tosyl Azide. J Org Chem 2019; 84:5893-5898. [PMID: 30951630 DOI: 10.1021/acs.joc.9b00269] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
2-Azido-4,6-dimethoxy-1,3,5-triazine (ADT) was reported recently as a new "intrinsically safe" diazo-transfer reagent. This assessment was based on differential scanning calorimetry data indicating that ADT exhibits endothermic decomposition. We present DSC data on ADT that show exothermic decomposition with an initiation temperature ( Tinit) of 159 °C and an enthalpy of decomposition (Δ HD) of -1135 J g-1 (-207 kJ mol-1). We conclude that ADT is potentially explosive and must be treated with caution, being of comparable exothermic magnitude to tosyl azide (TsN3). A maximum recommended process temperature for ADT is 55 °C.
Collapse
Affiliation(s)
- Sebastian P Green
- Department of Chemistry, Molecular Sciences Research Hub , Imperial College London , White City Campus, 80 Wood Lane , London W12 0BZ , U.K.,Department of Chemical Engineering , Imperial College London , South Kensington Campus, Exhibition Road , London SW7 2AZ , U.K
| | - Andrew D Payne
- Process Safety, Pilot Plant Operations, GlaxoSmithKline , GSK Medicines Research Centre , Gunnels Wood Road , Stevenage , Hertfordshire SG1 2NY , U.K
| | - Katherine M Wheelhouse
- API Chemistry, Product Development & Supply, GlaxoSmithKline , GSK Medicines Research Centre , Gunnels Wood Road , Stevenage , Hertfordshire SG1 2NY , U.K
| | - Jason P Hallett
- Department of Chemical Engineering , Imperial College London , South Kensington Campus, Exhibition Road , London SW7 2AZ , U.K
| | - Philip W Miller
- Department of Chemistry, Molecular Sciences Research Hub , Imperial College London , White City Campus, 80 Wood Lane , London W12 0BZ , U.K
| | - James A Bull
- Department of Chemistry, Molecular Sciences Research Hub , Imperial College London , White City Campus, 80 Wood Lane , London W12 0BZ , U.K
| |
Collapse
|
9
|
Schnabel TM, Melcher D, Brandhorst K, Bockfeld D, Tamm M. Unraveling the Mechanism of 1,3-Diyne Cross-Metathesis Catalyzed by Silanolate-Supported Tungsten Alkylidyne Complexes. Chemistry 2018; 24:9022-9032. [PMID: 29676817 DOI: 10.1002/chem.201801651] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Indexed: 02/05/2023]
Affiliation(s)
- Tobias M. Schnabel
- Institut für Anorganische und Analytische Chemie; Technische Universität Braunschweig; Hagenring 30 38106 Braunschweig Germany
| | - Daniel Melcher
- Institut für Anorganische und Analytische Chemie; Technische Universität Braunschweig; Hagenring 30 38106 Braunschweig Germany
| | - Kai Brandhorst
- Institut für Anorganische und Analytische Chemie; Technische Universität Braunschweig; Hagenring 30 38106 Braunschweig Germany
| | - Dirk Bockfeld
- Institut für Anorganische und Analytische Chemie; Technische Universität Braunschweig; Hagenring 30 38106 Braunschweig Germany
| | - Matthias Tamm
- Institut für Anorganische und Analytische Chemie; Technische Universität Braunschweig; Hagenring 30 38106 Braunschweig Germany
| |
Collapse
|
10
|
Wang Y, Suo Q, Han L, Guo L, Wang Y, Li F. Copper(II)/Palladium(II) catalysed highly selective cross-coupling of terminal alkynes in supercritical carbon dioxide. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.02.060] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
11
|
Ötvös SB, Georgiádes Á, Mészáros R, Kis K, Pálinkó I, Fülöp F. Continuous-flow oxidative homocouplings without auxiliary substances: Exploiting a solid base catalyst. J Catal 2017. [DOI: 10.1016/j.jcat.2017.02.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
12
|
Devarajan N, Karthik M, Suresh P. Copper catalyzed oxidative homocoupling of terminal alkynes to 1,3-diynes: a Cu3(BTC)2 MOF as an efficient and ligand free catalyst for Glaser–Hay coupling. Org Biomol Chem 2017; 15:9191-9199. [DOI: 10.1039/c7ob02196h] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
An efficient and sustainable methodology for the synthesis of 1,3-diynes has been demonstrated using a Cu3(BTC)2 metal organic framework.
Collapse
Affiliation(s)
- Nainamalai Devarajan
- Supramolecular and Catalysis Lab
- Dept. of Natural Products Chemistry
- School of Chemistry
- Madurai Kamaraj University
- Madurai-625021
| | - Murugan Karthik
- Supramolecular and Catalysis Lab
- Dept. of Natural Products Chemistry
- School of Chemistry
- Madurai Kamaraj University
- Madurai-625021
| | - Palaniswamy Suresh
- Supramolecular and Catalysis Lab
- Dept. of Natural Products Chemistry
- School of Chemistry
- Madurai Kamaraj University
- Madurai-625021
| |
Collapse
|
13
|
Mo S, Shao XB, Zhang G, Li QH. Highly efficient synthesis of unsymmetrical 1,3-diynes from organoalane reagents and alkynyl bromides mediated by a nickel catalyst. RSC Adv 2017. [DOI: 10.1039/c7ra02758c] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Highly efficient and simple cross-coupling reactions of alkynylbromides with organoalane reagents for the synthesis of unsymmetrical 1,3-diynes derivatives using Ni(OAc)2 (2–5 mol%)/(o-furyl)3P (4–10 mol%) as a catalyst are reported.
Collapse
Affiliation(s)
- Song Mo
- College of Chemistry and Environmental Protection Engineering
- Southwest University for Nationalities
- Chengdu 610041
- P. R. China
| | - Xue-Bei Shao
- College of Chemistry and Environmental Protection Engineering
- Southwest University for Nationalities
- Chengdu 610041
- P. R. China
| | - Gang Zhang
- College of Chemistry and Environmental Protection Engineering
- Southwest University for Nationalities
- Chengdu 610041
- P. R. China
| | - Qing-Han Li
- College of Chemistry and Environmental Protection Engineering
- Southwest University for Nationalities
- Chengdu 610041
- P. R. China
| |
Collapse
|
14
|
Homocoupling reactions of terminal alkynes and arylboronic compounds catalyzed by in situ formed Al(OH) 3 -supported palladium nanoparticles. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.09.035] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
15
|
Su L, Dong J, Liu L, Sun M, Qiu R, Zhou Y, Yin SF. Copper Catalysis for Selective Heterocoupling of Terminal Alkynes. J Am Chem Soc 2016; 138:12348-51. [DOI: 10.1021/jacs.6b07984] [Citation(s) in RCA: 103] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Lebin Su
- State Key Laboratory of Chemo/Biosensing
and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Jianyu Dong
- State Key Laboratory of Chemo/Biosensing
and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Long Liu
- State Key Laboratory of Chemo/Biosensing
and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Mengli Sun
- State Key Laboratory of Chemo/Biosensing
and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Renhua Qiu
- State Key Laboratory of Chemo/Biosensing
and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Yongbo Zhou
- State Key Laboratory of Chemo/Biosensing
and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Shuang-Feng Yin
- State Key Laboratory of Chemo/Biosensing
and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| |
Collapse
|
16
|
Li S, Chen X, Chen J, Gong H. Ionic Liquid-Promoted Copper(II)-Catalyzed Homocoupling of Terminal Alkynes in Aqueous Phase or under Solvent-Limited Conditions. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2016. [DOI: 10.1246/bcsj.20160081] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
17
|
Liu Y, Liu P, Gu N, Xie J, Liu Y, Dai B. Synthesis of Unsymmetrical 1,3-Diynes via Pd/Cu-Catalyzed Cross-Coupling of Terminal Alkynes at Room Temperature. CHINESE J CHEM 2016. [DOI: 10.1002/cjoc.201600197] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
18
|
Pradhan S, Moon D, John RP. A double stranded metal-organic assembly accommodating a pair of water trimers in the host cavity and catalysing Glaser coupling. ACTA CRYSTALLOGRAPHICA SECTION B, STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS 2016; 72:102-108. [PMID: 26830801 DOI: 10.1107/s2052520615020983] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Accepted: 11/05/2015] [Indexed: 06/05/2023]
Abstract
A supramolecular compound, catena-poly{[Cu2(1,3-μ2-(1a))2(μ2-ter)2(H2O)2]n·(6H2O)n} (1) has been synthesized using (1a) [(1a = N(1),N(3),N(5)-trimethyl-N(1),N(3),N(5)-tris((pyridin-4-yl)methyl)-1,3,5-benzene tricarboxamide] and terephthalate (ter) as the pillaring unit by self-assembly. The terephthalate units are connected by copper(II) ions forming a single strand, while a pair of such strands are then linked by (1a) via two pyridyl terminal arms bound to copper(II) nodes on either side forming a one-dimensional double stranded assembly propagating along the c axis. The compound crystallizes in the Fdd2 space group. The cavity created in the interior of this double strand assembly trap six water molecules and are stabilized by hydrogen bonding with the host. The arrangement of the pair of acyclic water trimers in isolated cavities of (1) is such that it resembles a closed-bracket-like formation. The Hirshfeld surface analysis of (1) reveals the presence of strong intermolecular hydrogen-bonding interactions between one-dimensional ladder-like units and with the water trimer in the host cavity. The copper(II)-containing coordination polymer also acts as an efficient catalyst for the Glaser-Hay homo-coupling reaction.
Collapse
Affiliation(s)
- Subhashis Pradhan
- Department of Applied Chemistry, Indian School of Mines, Dhanbad, Jharkhand 826004, India
| | - Dohyun Moon
- Beamline Division, Pohang Accelerator Laboratory, Pohang, Kyungbuk 790784, Republic of Korea
| | - Rohith P John
- Department of Applied Chemistry, Indian School of Mines, Dhanbad, Jharkhand 826004, India
| |
Collapse
|
19
|
Abstract
A mild, efficient and green method has been developed for diazo transfer to β-ketoesters using polystyrene-supported benzenesulfonyl azide, water as solvent and catalytic base.
Collapse
Affiliation(s)
- Elaine Tarrant
- Department of Chemistry
- Analytical and Biological Chemistry Research Facility
- Synthesis and Solid State Pharmaceutical Centre
- University College Cork
- Ireland
| | - Claire V. O'Brien
- Department of Chemistry
- Analytical and Biological Chemistry Research Facility
- Synthesis and Solid State Pharmaceutical Centre
- University College Cork
- Ireland
| | - Stuart G. Collins
- Department of Chemistry
- Analytical and Biological Chemistry Research Facility
- Synthesis and Solid State Pharmaceutical Centre
- University College Cork
- Ireland
| |
Collapse
|
20
|
Liu Y, Gu N, Liu P, Xie J, Ma X, Liu Y, Dai B. 3-(Diphenylphosphino)propanoic acid: an efficient ligand for the Pd/Cu-catalyzed homo-coupling of terminal alkynes in the presence of oxygen at room temperature. Appl Organomet Chem 2015. [DOI: 10.1002/aoc.3359] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Yashuai Liu
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan; Shihezi University; Shihezi 832003 China
| | - Ningning Gu
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan; Shihezi University; Shihezi 832003 China
| | - Ping Liu
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan; Shihezi University; Shihezi 832003 China
| | - Jianwei Xie
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan; Shihezi University; Shihezi 832003 China
| | - Xiaowei Ma
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan; Shihezi University; Shihezi 832003 China
| | - Yan Liu
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan; Shihezi University; Shihezi 832003 China
| | - Bin Dai
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan; Shihezi University; Shihezi 832003 China
| |
Collapse
|