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Liu J, Le Y, Wu Y, Wang G, Yao C, Yu J, Li Q. Dithiophosphinylation of Allenyl Acetates: Access to 1,2-Bis(diphenylphosphino)ethane-Type Bidentate Ligands. Org Lett 2024. [PMID: 38602392 DOI: 10.1021/acs.orglett.4c01008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/12/2024]
Abstract
1,2-Bis(diphenylphosphino)ethanes (DPPEs) are versatile and immensely important ligands in transition metal catalysts. Here we report the dithiophosphinylation of readily available allenyl acetates to give DPPEs in high yields and regioselectivity. This protocol features a broad substrate scope and mild conditions, avoiding the use of transition metals and air-sensitive sources of phosphorus. Mechanism studies indicate that the reaction was accomplished via an SN2'-type addition-elimination followed by a 1,4-addition step.
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Affiliation(s)
- Jiaojiao Liu
- Department of Applied Chemistry, Anhui Province Engineering Laboratory for Green Pesticide Development and Application, and Anhui Province Key Laboratory of Crop Integrated Pest Management, Anhui Agricultural University, 230036 Hefei, China
| | - Yuan Le
- Department of Applied Chemistry, Anhui Province Engineering Laboratory for Green Pesticide Development and Application, and Anhui Province Key Laboratory of Crop Integrated Pest Management, Anhui Agricultural University, 230036 Hefei, China
| | - Yan Wu
- Department of Applied Chemistry, Anhui Province Engineering Laboratory for Green Pesticide Development and Application, and Anhui Province Key Laboratory of Crop Integrated Pest Management, Anhui Agricultural University, 230036 Hefei, China
| | - Gang Wang
- Department of Applied Chemistry, Anhui Province Engineering Laboratory for Green Pesticide Development and Application, and Anhui Province Key Laboratory of Crop Integrated Pest Management, Anhui Agricultural University, 230036 Hefei, China
| | - Chuanzhi Yao
- Department of Applied Chemistry, Anhui Province Engineering Laboratory for Green Pesticide Development and Application, and Anhui Province Key Laboratory of Crop Integrated Pest Management, Anhui Agricultural University, 230036 Hefei, China
| | - Jie Yu
- Department of Applied Chemistry, Anhui Province Engineering Laboratory for Green Pesticide Development and Application, and Anhui Province Key Laboratory of Crop Integrated Pest Management, Anhui Agricultural University, 230036 Hefei, China
| | - Qiankun Li
- Department of Applied Chemistry, Anhui Province Engineering Laboratory for Green Pesticide Development and Application, and Anhui Province Key Laboratory of Crop Integrated Pest Management, Anhui Agricultural University, 230036 Hefei, China
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2
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Salin AV, Shabanov AA. Advances in organocatalysis of the Michael reaction by tertiary Phosphines. CATALYSIS REVIEWS 2023. [DOI: 10.1080/01614940.2023.2168352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Affiliation(s)
- Alexey V. Salin
- A.M. Butlerov Institute of Chemistry, Kazan Federal University, Kazan, Russian Federation
| | - Andrey A. Shabanov
- A.M. Butlerov Institute of Chemistry, Kazan Federal University, Kazan, Russian Federation
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3
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Il'in AV, Khayarov KR, Anisimova KS, Islamov DR, Kuchaev ES. Phosphine‐Catalyzed α‐ and Vicinal Bis‐Addition of P(O)H Compounds to Alkynoates. ChemistrySelect 2023. [DOI: 10.1002/slct.202204002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Anton V. Il'in
- A. M. Butlerov Institute of Chemistry Kazan Federal University 29 Kremlevskaya St. Kazan 420008 Russia
| | - Khasan R. Khayarov
- A. M. Butlerov Institute of Chemistry Kazan Federal University 29 Kremlevskaya St. Kazan 420008 Russia
| | - Kristina S. Anisimova
- A. M. Butlerov Institute of Chemistry Kazan Federal University 29 Kremlevskaya St. Kazan 420008 Russia
| | - Daut R. Islamov
- Laboratory for structural analysis of biomacromolecules Kazan Scientific Center of Russian Academy of Sciences Lobachevsky str., 2/31 Kazan 420111 Russia
| | - Evgenii S. Kuchaev
- Laboratory for structural analysis of biomacromolecules Kazan Scientific Center of Russian Academy of Sciences Lobachevsky str., 2/31 Kazan 420111 Russia
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4
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Luo J, Tran GN, Rath NP, Mirica LM. Detection and Characterization of Mononuclear Pd(I) Complexes Supported by N2S2 and N4 Tetradentate Ligands. Inorg Chem 2020; 59:15659-15669. [PMID: 33058678 DOI: 10.1021/acs.inorgchem.0c01938] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Palladium is a versatile transition metal used to catalyze a large number of chemical transformations, largely due to its ability to access various oxidation states (0, I, II, III, and IV). Among these oxidation states, Pd(I) is arguably the least studied, and while dinuclear Pd(I) complexes are more common, mononuclear Pd(I) species are very rare. Reported herein are spectroscopic studies of a series of Pd(I) intermediates generated by the chemical reduction at low temperatures of Pd(II) precursors supported by the tetradentate ligands 2,11-dithia[3.3](2,6)pyridinophane (N2S2) and N,N'-di-tert-butyl-2,11-diaza[3.3](2,6)pyridinophane (tBuN4): [(N2S2)PdII(MeCN)]2(OTf)4 (1), [(N2S2)PdIIMe]2(OTf)2 (2), [(N2S2)PdIICl](OTf) (3), [(N2S2)PdIIX](OTf)2 (X = tBuNC 4, PPh3 5), [(N2S2)PdIIMe(PPh3)](OTf) (6), and [(tBuN4)PdIIX2](OTf)2 (X = MeCN 8, tBuNC 9). In addition, a stable Pd(I) dinuclear species, [(N2S2)PdI(μ-tBuNC)]2(ClO4)2 (7), was isolated upon the electrochemical reduction of 4 and structurally characterized. Moreover, the (tBuN4)PdI intermediates, formed from the chemical reduction of [(tBuN4)PdIIX2](OTf)2 (X = MeCN 8, tBuNC 9) complexes, were investigated by EPR spectroscopy, X-ray absorption spectroscopy (XAS), and DFT calculations and compared with the analogous (N2S2)PdI systems. Upon probing the stability of Pd(I) species under different ligand environments, it is apparent that the presence of soft ligands such as tBuNC and PPh3 significantly improves the stability of Pd(I) species, which should make the isolation of mononuclear Pd(I) species possible.
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Affiliation(s)
- Jia Luo
- Department of Chemistry, Washington University, One Brookings Drive, St. Louis, Missouri 63130-4899, United States
| | - Giang N Tran
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 S. Mathews Avenue, Urbana, Illinois 61801, United States
| | - Nigam P Rath
- Department of Chemistry and Biochemistry, University of Missouri, One University Boulevard, St. Louis, Missouri 63121-4400, United States
| | - Liviu M Mirica
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 S. Mathews Avenue, Urbana, Illinois 61801, United States
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5
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Xu W, Li M, Qiao L, Xie J. Recent advances of dinuclear nickel- and palladium-complexes in homogeneous catalysis. Chem Commun (Camb) 2020; 56:8524-8536. [PMID: 32613965 DOI: 10.1039/d0cc02542a] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
In this highlight, we provide a current perspective of synthetic methodology development catalyzed by dinuclear Ni- and Pd-complexes in the past decade. The new catalytic reactivities of dinuclear Ni- and Pd-complexes are discussed.
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Affiliation(s)
- Wentao Xu
- State Key Laboratory of Coordination Chemistry
- Jiangsu Key Laboratory of Advanced Organic Materials
- Chemistry and Biomedicine Innovation Center (ChemBIC)
- School of Chemistry and Chemical Engineering
- Nanjing University
| | - Muzi Li
- State Key Laboratory of Coordination Chemistry
- Jiangsu Key Laboratory of Advanced Organic Materials
- Chemistry and Biomedicine Innovation Center (ChemBIC)
- School of Chemistry and Chemical Engineering
- Nanjing University
| | - Liancheng Qiao
- State Key Laboratory of Coordination Chemistry
- Jiangsu Key Laboratory of Advanced Organic Materials
- Chemistry and Biomedicine Innovation Center (ChemBIC)
- School of Chemistry and Chemical Engineering
- Nanjing University
| | - Jin Xie
- State Key Laboratory of Coordination Chemistry
- Jiangsu Key Laboratory of Advanced Organic Materials
- Chemistry and Biomedicine Innovation Center (ChemBIC)
- School of Chemistry and Chemical Engineering
- Nanjing University
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Gattaiah D, Reddy AS, Khan SA, Swamy KK. Reactions of alkynes- copper-catalyzed cyclization of functionalized alkynes with elemental sulfur/selenium to form oxathiines/oxaselenines. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.03.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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7
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Salin AV, Il'in AV, Faskhutdinov RI, Fayzullin RR. Phosphine-catalyzed bishydrophosphorylation of electron-deficient alkynes. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.03.042] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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8
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Swamy KCK, Anitha M, Debnath S, Shankar M. Reactivity of allenylphosphonates/allenylphosphine oxides – some new addition/cycloaddition and cyclization pathways. PURE APPL CHEM 2019. [DOI: 10.1515/pac-2018-1111] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Abstract
In this paper, we highlight some addition/cycloaddition reactions of allenylphosphonates and allenylphosphine oxides, mostly based on the work done in our laboratory. Thus the electrophilic addition of iodine monochloride (ICl) with allenylphosphine oxides affords cyclic phosphonium salts rather than γ-chloro-β-iodovinylphosphine oxides (NMR, HRMS, X-ray) that exhibit rather unusual downfield shifts in the 31P NMR spectra. These compounds undergo hydrolysis to afford γ-hydroxy-β-iodovinylphosphine oxides; the hydroxymethyl group in these compounds can be oxidized by Dess-Martin periodinane to afford the corresponding aldehyde-substituted vinylphosphine oxides. A [2+2] cycloaddition product of an allenylphosphonate has also been structurally characterized. Other reactions that are highlighted include those leading to (Z)/(E)-β-aminovinylphosphonates, β-ketophosphonates (and their utility in Horner-Wadsworth-Emmons reaction), indolyl/furanyl/isocoumaranyl/naphthyl phosphine oxides, thiophosphorylated phosphonates and azo-substituted coumarin phosphonates.
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Affiliation(s)
- K. C. Kumara Swamy
- School of Chemistry , University of Hyderabad , Hyderabad-500046, Telangana , India
| | - Mandala Anitha
- School of Chemistry , University of Hyderabad , Hyderabad-500046, Telangana , India
| | - Shubham Debnath
- School of Chemistry , University of Hyderabad , Hyderabad-500046, Telangana , India
| | - Mallepalli Shankar
- School of Chemistry , University of Hyderabad , Hyderabad-500046, Telangana , India
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New reactions of allenes, alkynes, ynamides, enynones and isothiocyanates. J CHEM SCI 2018. [DOI: 10.1007/s12039-018-1496-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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10
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Dinuclear Nickel(I) and Palladium(I) Complexes for Highly Active Transformations of Organic Compounds. Molecules 2018; 23:molecules23010140. [PMID: 29324677 PMCID: PMC6017577 DOI: 10.3390/molecules23010140] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 01/08/2018] [Accepted: 01/09/2018] [Indexed: 11/23/2022] Open
Abstract
In typical catalytic organic transformations, transition metals in catalytically active complexes are present in their most stable valence states, such as palladium(0) and (II). However, some dimeric monovalent metal complexes can be stabilized by auxiliary ligands to form diamagnetic compounds with metal–metal bonding interactions. These diamagnetic compounds can act as catalysts while retaining their dimeric forms, split homolytically or heterolytically into monomeric forms, which usually have high activity, or in contrast, become completely deactivated as catalysts. Recently, many studies using group 10 metal complexes containing nickel and palladium have demonstrated that under specific conditions, the active forms of these catalyst precursors are not mononuclear zerovalent complexes, but instead dinuclear monovalent metal complexes. In this mini-review, we have surveyed the preparation, reactivity, and the catalytic processes of dinuclear nickel(I) and palladium(I) complexes, focusing on mechanistic insights into the precatalyst activation systems and the structure and behavior of nickel and palladium intermediates.
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Swamy KCK, Chakravarty M, Debnath S, Reddy MN. Reaction of allenylphosphonates/allenylphosphine oxides with thiocyanates/isothiocyanates or oxalyl chloride/AgNO3. PHOSPHORUS SULFUR 2017. [DOI: 10.1080/10426507.2017.1287707] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- K. C. Kumara Swamy
- School of Chemistry, University of Hyderabad, Hyderabad, Telangana, India
| | - Manab Chakravarty
- School of Chemistry, University of Hyderabad, Hyderabad, Telangana, India
- Department of Chemistry, Birla Institute of Technology & Science, Pilani Hyderabad Campus, Jawahar Nagar, Shameerpet Mandal, Hyderabad, Telangana, India
| | - Shubham Debnath
- School of Chemistry, University of Hyderabad, Hyderabad, Telangana, India
| | - M. Nagarjuna Reddy
- School of Chemistry, University of Hyderabad, Hyderabad, Telangana, India
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Swamy KCK, Anitha M, Gangadhararao G, Rama Suresh R. Exploring allene chemistry using phosphorus-based allenes as scaffolds. PURE APPL CHEM 2017. [DOI: 10.1515/pac-2016-0907] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractIn this paper, we review some of our results on cycloaddition and cyclization reactions of allenylphosphonates/and allenyl phosphine oxides. Thus nitro-substituted propargylic alcohols react with P(III)–Cl substrates to lead to unprecedented phosphono-benzazepines or -hydroxyindolinones. A similar reaction using a higher stoichiometry of P(III)–Cl precursor has led to the first observation of spontaneous resolution by crystallization in allene chemistry. In the reaction of these phosphorus based allenes with diphenyl isobenzofuran (DPBF), depending on the substituents, both [α, β] and [β, γ]-cycloaddition products are formed. Extension of this work to sulfur based allenes and leading to a new [4+2] cycloadduct with DPBF is reported. A novel cyclization reaction of a functionalized allenylphosphine oxide with diethylamine leading to 3-diethylamino-4-diphenylphosphinoyl-1-naphthol is discovered. Base-catalyzed reactions of allenylphosphonates with 2-substituted benzaldehdes lead to novel thiochromans, chromenes, and quinolines. Allenylphosphonates undergo phosphonylation in the presence of tetrabutyl ammonium fluoride (TBAF). Vinyl azides derived from allenylphosphonates undergo thermolysis to form bis-phosphonopyrazines. [Pd]-catalyzed reactions of allenes with 2-iodophenols, 2-iodobenzyl alcohol and 3-iodo-indole-2-carboxylic acids lead to a variety of benzofurans, benzopyrans and benzopyranones, respectively.
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Affiliation(s)
- K. C. Kumara Swamy
- 1School of Chemistry, University of Hyderabad, Hyderabad-500046, Telangana, India
| | - Mandala Anitha
- 1School of Chemistry, University of Hyderabad, Hyderabad-500046, Telangana, India
| | - G. Gangadhararao
- 1School of Chemistry, University of Hyderabad, Hyderabad-500046, Telangana, India
| | - R. Rama Suresh
- 1School of Chemistry, University of Hyderabad, Hyderabad-500046, Telangana, India
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Swamy KCK, Suresh RR, Gangadhararao G, Anitha M. Phosphorus-based allenes as scaffolds in cycloaddition and cyclization reactions. PHOSPHORUS SULFUR 2016. [DOI: 10.1080/10426507.2016.1211651] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- K. C. Kumara Swamy
- School of Chemistry, University of Hyderabad, Hyderabad, Telangana, India
| | - R. Rama Suresh
- School of Chemistry, University of Hyderabad, Hyderabad, Telangana, India
| | - G. Gangadhararao
- School of Chemistry, University of Hyderabad, Hyderabad, Telangana, India
| | - M. Anitha
- School of Chemistry, University of Hyderabad, Hyderabad, Telangana, India
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Pan XQ, Zou JP, Yi WB, Zhang W. Recent advances in sulfur- and phosphorous-centered radical reactions for the formation of S–C and P–C bonds. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.04.117] [Citation(s) in RCA: 131] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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15
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Kumari ALS, Swamy KCK. Divergence in the Reactivity between Amine- and Phosphine-Catalyzed Cycloaddition Reactions of Allenoates with Enynals: One-Pot Gold-Catalyzed Synthesis of Trisubstituted Benzofurans from the [3 + 2] Cycloadduct via 1,2-Alkyl Migration and Dehydrogenation. J Org Chem 2015; 80:4084-96. [DOI: 10.1021/acs.joc.5b00415] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- A. Leela Siva Kumari
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, Telangana, India
| | - K. C. Kumara Swamy
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, Telangana, India
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Dondoni A, Marra A. Validating the alkene and alkyne hydrophosphonylation as an entry to organophosphonates. Org Biomol Chem 2015; 13:2212-5. [DOI: 10.1039/c4ob02501f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The hydrophosphonylation of terminal alkenes and alkynes by H-phosphonates affords Markovnikov and/or anti-Markovnikov adducts depending on the catalyst (a metal or a radical initiator) and the reaction conditions.
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Affiliation(s)
- Alessandro Dondoni
- Interdisciplinary Center for the Study of Inflammation
- Università di Ferrara
- 44121 Ferrara
- Italy
| | - Alberto Marra
- Institut des Biomolécules Max Mousseron (IBMM)
- UMR 5247
- Ecole Nationale Supérieure de Chimie de Montpellier
- 34296 Montpellier cedex 5
- France
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17
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Mi X, Wang C, Huang M, Wu Y, Wu Y. Silver-catalyzed carbonphosphonation of α,α-diaryl allylic alcohols: synthesis of β-aryl-γ-ketophosphonates. Org Biomol Chem 2014; 12:8394-7. [DOI: 10.1039/c4ob01739k] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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19
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Rama Suresh R, Prasad Tulichala RN, Kotikalapudi R, Kumara Swamy KC. P(n-Bu)3Catalyzed Reactions of SalicylN-Thiophosphinyl Imines with Allenylphosphonates: Synthesis of Phosphono-Chromans. J Heterocycl Chem 2013. [DOI: 10.1002/jhet.2071] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- R. Rama Suresh
- School of Chemistry; University of Hyderabad; Hyderabad 500 046 Andhra Pradesh India
| | | | - Ramesh Kotikalapudi
- School of Chemistry; University of Hyderabad; Hyderabad 500 046 Andhra Pradesh India
| | - K. C. Kumara Swamy
- School of Chemistry; University of Hyderabad; Hyderabad 500 046 Andhra Pradesh India
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20
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Lechel T, Pfrengle F, Reissig HU, Zimmer R. Three Carbons for Complexity! Recent Developments of Palladium-Catalyzed Reactions of Allenes. ChemCatChem 2013. [DOI: 10.1002/cctc.201200875] [Citation(s) in RCA: 112] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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21
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Nagarjuna Reddy M, Kumara Swamy KC. Dual catalysis by Cu(i): facile single step click and intramolecular C–O bond formation leading to triazole tethered dihydrobenzodioxines/benzoxazines/benzoxathiines/benzodioxepines. Org Biomol Chem 2013; 11:7350-60. [DOI: 10.1039/c3ob41332b] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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22
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Miao W, Gao Y, Li X, Gao Y, Tang G, Zhao Y. Copper-Catalyzed Synthesis of Alkylphosphonates fromH-Phosphonates andN-Tosylhydrazones. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201200295] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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23
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Suresh RR, Swamy KCK. Palladium-Catalyzed Annulation of Allenes with Indole-2-carboxylic Acid Derivatives: Synthesis of Indolo[2,3-c]pyrane-1-ones via Ar–I Reactivity or C–H Functionalization. J Org Chem 2012; 77:6959-69. [DOI: 10.1021/jo301149s] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- R. Rama Suresh
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, A. P., India
| | - K. C. Kumara Swamy
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, A. P., India
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Nagarjuna Reddy M, Kumara Swamy KC. Facile Construction of [6,6]-, [6,7]-, [6,8]-, and [6,9]Ring-Fused Triazole Frameworks by Copper-Catalyzed, Tandem, One-Pot, Click and Intramolecular Arylation Reactions: Elaboration to Fused Pentacyclic Derivatives. European J Org Chem 2012. [DOI: 10.1002/ejoc.201101816] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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25
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Srinivas V, Sajna K, Kumara Swamy K. Zn(OTf)2 catalyzed addition–cyclization reaction of allenylphosphine oxides with propargyl alcohol-unexpected formation of 2,5-dimethylenetetrahydrofurans and 2-substituted furans. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.08.020] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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