51
|
Sharma RK, Ghose R. Synthesis of nanocrystalline copper oxide with dandelion-like morphology by homogeneous precipitation method. J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2014.07.064] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
52
|
Highly efficient and magnetically separable nano-CuFe2O4 catalyzed S-arylation of thiourea by aryl/heteroaryl halides. CHINESE CHEM LETT 2014. [DOI: 10.1016/j.cclet.2014.05.015] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
53
|
Satish G, Reddy KHV, Anil B, Shankar J, Uday Kumar R, Nageswar Y. Direct C–H amination of benzothiazoles by magnetically recyclable CuFe2O4 nanoparticles under ligand-free conditions. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.07.100] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
54
|
Satish G, Reddy KHV, Ramesh K, Shankar J, Nageswar YVD. An environmentally benign and efficient synthesis of 2-thio-substituted benzothiazoles. ACTA ACUST UNITED AC 2014. [DOI: 10.5155/eurjchem.5.2.291-295.861] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
55
|
Gaddam S, Kasireddy HR, Konkala K, Katla R, Durga NYV. Synthesis of N-substituted-2-aminobenzothiazoles using nano copper oxide as a recyclable catalyst under ligand-free conditions, in reusable PEG-400 medium. CHINESE CHEM LETT 2014. [DOI: 10.1016/j.cclet.2014.02.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
56
|
Satish G, Reddy KHV, Ramesh K, Kumar BA, Nageswar Y. An elegant protocol for the synthesis of N-substituted pyrroles through C–N cross coupling/aromatization process using CuFe2O4 nanoparticles as catalyst under ligand-free conditions. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.01.075] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
57
|
Anil Kumar BSP, Harsha Vardhan Reddy K, Satish G, Uday Kumar R, Nageswar YVD. Synthesis of β-hydroxy-1,4-disubstituted-1,2,3-triazoles catalyzed by copper ferrite nanoparticles in tap water using click chemistry. RSC Adv 2014. [DOI: 10.1039/c4ra12061b] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A novel one pot synthesis of β-hydroxy-1,4-disubstituted-1,2,3-triazoles has been developed by using CuFe2O4 nanoparticles. This protocol involves easily recyclable catalyst in water and avoids the handling of azides as they are generated in situ.
Collapse
Affiliation(s)
| | | | - G. Satish
- MCP Division
- Indian Institute of Chemical Technology
- Hyderabad 500607, India
| | - R. Uday Kumar
- MCP Division
- Indian Institute of Chemical Technology
- Hyderabad 500607, India
| | - Y. V. D. Nageswar
- MCP Division
- Indian Institute of Chemical Technology
- Hyderabad 500607, India
| |
Collapse
|
58
|
Harsha Vardhan Reddy K, Anil Kumar BSP, Prakash Reddy V, Uday Kumar R, Nageswar YVD. Ru/C: a simple heterogeneous catalyst for the amination of azoles under ligand free conditions. RSC Adv 2014. [DOI: 10.1039/c4ra05447d] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
A ligand free Ru/C-catalyzed amination of 2-halo azoles with a broad scope of aminating reagents has been developed. Utilizing this protocol a variety of 2-aminoazole derivatives were synthesized in moderate to good yields. The methodology is operationally simple and it provides potentially useful products by using an inexpensive recyclable catalytic system.
Collapse
Affiliation(s)
| | | | - V. Prakash Reddy
- MCP Division
- Indian Institute of Chemical Technology
- Hyderabad 500607, India
| | - R. Uday Kumar
- MCP Division
- Indian Institute of Chemical Technology
- Hyderabad 500607, India
| | - Y. V. D. Nageswar
- MCP Division
- Indian Institute of Chemical Technology
- Hyderabad 500607, India
| |
Collapse
|
59
|
Sarkar S, Chatterjee N, Roy M, Pal R, Sarkar S, Sen AK. Nanodomain cubic cuprous oxide as reusable catalyst in one-pot synthesis of 3-alkyl/aryl-3-(pyrrole-2-yl/indole-3-yl)-2-phenyl-2,3-dihydro-isoindolinones in aqueous medium. RSC Adv 2014. [DOI: 10.1039/c3ra46168h] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
60
|
Copper Based Nanoparticles-Catalyzed Organic Transformations. CATALYSIS SURVEYS FROM ASIA 2013. [DOI: 10.1007/s10563-013-9159-2] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
61
|
Chen HY, Peng WT, Lee YH, Chang YL, Chen YJ, Lai YC, Jheng NY, Chen HY. Use of Base Control To Provide High Selectivity between Diaryl Thioether and Diaryl Disulfide for C–S Coupling Reactions of Aryl Halides and Sulfur and a Mechanistic Study. Organometallics 2013. [DOI: 10.1021/om400784w] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Hsing-Ying Chen
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, Republic of China
| | - Wei-Te Peng
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, Republic of China
| | - Ying-Hsien Lee
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, Republic of China
| | - Yu-Lun Chang
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, Republic of China
| | - Yen-Jen Chen
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, Republic of China
| | - Yi-Chun Lai
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, Republic of China
| | - Nai-Yuan Jheng
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, Republic of China
| | - Hsuan-Ying Chen
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, Republic of China
| |
Collapse
|
62
|
Woo H, Mohan B, Heo E, Park JC, Song H, Park KH. CuO hollow nanosphere-catalyzed cross-coupling of aryl iodides with thiols. NANOSCALE RESEARCH LETTERS 2013; 8:390. [PMID: 24044527 PMCID: PMC3848532 DOI: 10.1186/1556-276x-8-390] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Accepted: 09/12/2013] [Indexed: 06/02/2023]
Abstract
New functionalized CuO hollow nanospheres on acetylene black (CuO/AB) and on charcoal (CuO/C) have been found to be effective catalysts for C-S bond formation under microwave irradiation. CuO catalysts showed high catalytic activity with a wide variety of substituents which include electron-rich and electron-poor aryl iodides with thiophenols by the addition of two equivalents of K2CO3 as base in the absence of ligands.
Collapse
Affiliation(s)
- Hyunje Woo
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 609-735, Korea
| | - Balaji Mohan
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 609-735, Korea
| | - Eunjung Heo
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 609-735, Korea
| | - Ji Chan Park
- Clean Fuel Department, Korea Institute of Energy Research, Daejeon 305-343, Korea
| | - Hyunjoon Song
- Department of Chemistry, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Korea
| | - Kang Hyun Park
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 609-735, Korea
| |
Collapse
|
63
|
Kamal A, Srinivasulu V, Murty JNSRC, Shankaraiah N, Nagesh N, Srinivasa Reddy T, Subba Rao AV. Copper Oxide Nanoparticles Supported on Graphene Oxide- Catalyzed S-Arylation: An Efficient and Ligand-Free Synthesis of Aryl Sulfides. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300416] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
64
|
Soria-Castro SM, Peñéñory AB. Efficient Cu-catalyzed base-free C-S coupling under conventional and microwave heating. A simple access to S-heterocycles and sulfides. Beilstein J Org Chem 2013; 9:467-75. [PMID: 23503063 PMCID: PMC3596051 DOI: 10.3762/bjoc.9.50] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Accepted: 01/30/2013] [Indexed: 11/23/2022] Open
Abstract
S-aryl thioacetates can be prepared by reaction of inexpensive potassium thioacetate with both electron-rich and electron-poor aryl iodides under a base-free copper/ligand catalytic system. CuI as copper source affords S-aryl thioacetates in good to excellent yields, by using 1,10-phenanthroline as a ligand in toluene at 100 °C after 24 h. Under microwave irradiation the time was drastically reduced to 2 h. Both procedures are simple and involve a low-cost catalytic system. This methodology was also applied to the “one-pot” synthesis of target heterocycles, such as 3H-benzo[c][1,2]dithiol-3-one and 2-methylbenzothiazole, alkyl aryl sulfides, diaryl disulfides and asymmetric diaryl sulfides in good yields.
Collapse
Affiliation(s)
- Silvia M Soria-Castro
- INFIQC, Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, X5000HUA. Córdoba, Argentina
| | | |
Collapse
|
65
|
Soleiman-Beigi M, Mohammadi F. A novel copper-catalyzed, one-pot synthesis of symmetric organic disulfides from alkyl and aryl halides: potassium 5-methyl-1,3,4-oxadiazole-2-thiolate as a novel sulfur transfer reagent. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.10.016] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
66
|
Magnetically separable CuFe2O4 nano particles catalyzed multicomponent synthesis of 1,4-disubstituted 1,2,3-triazoles in tap water using ‘click chemistry’. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.06.077] [Citation(s) in RCA: 140] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
67
|
Reddy KHV, Satish G, Ramesh K, Karnakar K, Nageswar YVD. Magnetically Separable CuFe2O4Nanoparticle Catalyzed C–Se Cross Coupling in Reusable PEG Medium. CHEM LETT 2012. [DOI: 10.1246/cl.2012.585] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | - G. Satish
- Natural Product Chemistry, Indian Institute of Chemical Technology
| | - K. Ramesh
- Natural Product Chemistry, Indian Institute of Chemical Technology
| | - K. Karnakar
- Natural Product Chemistry, Indian Institute of Chemical Technology
| | | |
Collapse
|
68
|
An efficient synthesis of N-substituted indoles from indoline/indoline carboxylic acid via aromatization followed by C–N cross-coupling reaction by using nano copper oxide as a recyclable catalyst. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.04.012] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
69
|
Synthesis of 2-N-substituted benzothiazoles via domino condensation-hetero cyclization process, mediated by copper oxide nanoparticles under ligand-free conditions. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.03.012] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
70
|
Wu XM, Hu WY. Direct synthesis of diaryl sulfides by copper-catalyzed coupling of aryl halides with aminothiourea. CHINESE CHEM LETT 2012. [DOI: 10.1016/j.cclet.2012.01.011] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
71
|
Ranu BC, Dey R, Chatterjee T, Ahammed S. Copper nanoparticle-catalyzed carbon-carbon and carbon-heteroatom bond formation with a greener perspective. CHEMSUSCHEM 2012; 5:22-44. [PMID: 22213696 DOI: 10.1002/cssc.201100348] [Citation(s) in RCA: 118] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2011] [Revised: 10/28/2011] [Indexed: 05/18/2023]
Abstract
The carbon-carbon and carbon-heteroatom bond formations constitute the backbone of organic synthesis and have been widely used in the synthesis of natural products and useful compounds. Because of growing environmental concern, more attention has been focussed on the development of greener methods. Copper is environment-friendly and comparatively inexpensive. Although the use of copper salts in catalysis has been known since the last century, this area of research has been less explored compared to other metals, such as palladium, magnesium, and zinc. This review highlights the general features of nanoparticles as catalysts with particular reference to copper and the recent developments in the copper(0) nanoparticle-catalyzed C(aryl)-C(aryl/alkynyl), C(aryl)-N, C(aryl)-O, C(aryl)-S, and C(aryl)-Se bond formations and related reactions. The mechanisms of the reactions have been outlined and discussed with respect to the active catalytic species and possible intermediates. The scope, limitations, and green aspects of the reactions have also been highlighted. The convenient methods of preparation of copper nanoparticles and their characterization are described.
Collapse
Affiliation(s)
- Brindaban C Ranu
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata, India.
| | | | | | | |
Collapse
|
72
|
Reddy KHV, Satish G, Reddy VP, Kumar BSPA, Nageswar YVD. Recyclable Ru/C catalyzed oxidative cyanation of tertiary amines with TBHP. RSC Adv 2012. [DOI: 10.1039/c2ra21630b] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
73
|
Li Y, Nie C, Wang H, Li X, Verpoort F, Duan C. A Highly Efficient Method for the Copper-Catalyzed Selective Synthesis of Diaryl Chalcogenides from Easily Available Chalcogen Sources. European J Org Chem 2011. [DOI: 10.1002/ejoc.201101121] [Citation(s) in RCA: 88] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
74
|
Barancelli DA, Schumacher RF, Leite MR, Zeni G. Copper(II)-Mediated Intramolecular Cyclization of (Z)-Chalcogenoenynes: Synthesis of 3-Halochalcogenophene Derivatives. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100992] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
75
|
Reddy KHV, Reddy VP, Kumar AA, Kranthi G, Nageswar Y. Nano copper oxide catalyzed synthesis of symmetrical diaryl sulfides under ligand free conditions. Beilstein J Org Chem 2011; 7:886-91. [PMID: 21804885 PMCID: PMC3135086 DOI: 10.3762/bjoc.7.101] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2011] [Accepted: 06/04/2011] [Indexed: 12/23/2022] Open
Abstract
Potassium thiocyanate acts as an efficient sulfur surrogate in C-S cross-coupling reactions mediated by recyclable copper oxide nanoparticles under ligand free conditions. This protocol avoids foul smelling thiols, for the synthesis of a variety of symmetrical diaryl sulfides, via the cross-coupling of different aryl halides with potassium thiocyanate, affording corresponding products in moderate to excellent yields.
Collapse
Affiliation(s)
- K Harsha Vardhan Reddy
- Organic Chemistry Divison-I, Indian Institute of Chemical Technology, Hyderabad-500 607, India
| | | | | | | | | |
Collapse
|