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Liu L, Zhang Y, Zhao W, Li J. Electron Donor-Acceptor Complex Induced Fused Indoles with Hypervalent Iodine(III) Reagents. Org Lett 2023; 25:6251-6255. [PMID: 37607047 DOI: 10.1021/acs.orglett.3c02009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/24/2023]
Abstract
An operationally simple and efficient method for the cyclization of tertiary amines and hypervalent iodine reagents enabled by an EDA complex has been developed. A series of [1,2-α]indoles derivatives were obtained in good yields, including some key intermediates for the synthesis of biologically active molecules. In addition, this established strategy features a broad substrate scope and good functional group tolerance.
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Affiliation(s)
- Li Liu
- School of Pharmacy, Analysis and Testing Center, NERC Biomass of Changzhou University, Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Changzhou University, Changzhou, 213164, China
| | - Yage Zhang
- School of Pharmacy, Analysis and Testing Center, NERC Biomass of Changzhou University, Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Changzhou University, Changzhou, 213164, China
| | - Wenyan Zhao
- School of Pharmacy, Analysis and Testing Center, NERC Biomass of Changzhou University, Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Changzhou University, Changzhou, 213164, China
| | - Jian Li
- School of Pharmacy, Analysis and Testing Center, NERC Biomass of Changzhou University, Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Changzhou University, Changzhou, 213164, China
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2
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Rhodium(III)‐Catalyzed Cascade C−H Activation/Annulation of
N
‐carbamoylindoles with Silyl Enol Ethers for the Construction of Dihydropyrimidoindolone Skeletons. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100415] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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3
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Han TJ, Wang MC, Mei GJ. 2-Indolymethanols as 4-atom-synthons in oxa-Michael reaction cascade: access to tetracyclic indoles. Chem Commun (Camb) 2021; 57:8921-8924. [PMID: 34387291 DOI: 10.1039/d1cc03653j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The first Brønsted acid-catalyzed oxa-Michael reaction cascade of 2-indolylmethanols with trione alkenes was accomplished. By using this practical approach, a variety of tetracyclic indoles were readily created in an ordered sequence with excellent regio- and diastereoselectivity. 2-Indolylmethanols commendably served as four-atom synthons, as opposed to the common three-atom synthons in the previous literature reports. The regioselectivity issue was well handled by the employment of a strong Brønsted acid catalyst. In addition, its dual role in activation of substrates via hydrogen-bonding interaction and acceleration of subsequent intramolecular cyclization and dehydration was proposed to account for the high reaction efficiency.
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Affiliation(s)
- Tian-Jiao Han
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.
| | - Min-Can Wang
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.
| | - Guang-Jian Mei
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.
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4
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Zhang J, Wang M, Wang H, Xu H, Chen J, Guo Z, Ma B, Ban SR, Dai HX. Construction of 2-alkynyl aza-spiro[4,5]indole scaffolds via sequential C-H activations for modular click chemistry libraries. Chem Commun (Camb) 2021; 57:8656-8659. [PMID: 34373875 DOI: 10.1039/d1cc02798k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Herein, we have developed a strategy of sequential C-H activations of indole to construct novel 2-alkynyl aza-spiro[4,5]indole scaffolds, which incorporated both alkyne and spiro-units into indole. Gram-scale synthesis and a one-pot, three-step synthesis demonstrated the utility of this protocol. Hybrid conjugates with an oseltamivir derivative further offered a powerful tool for the construction of a versatile spiroindole-containing library via click chemistry.
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Affiliation(s)
- Jun Zhang
- School of Pharmaceutical Science, Shanxi Medical University, 56 Xinjian South Road, Taiyuan 030001, China.
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Cobalt-catalyzed C H activation of N-carbamoyl indoles or benzamides with maleimides: Synthesis of imidazo[1,5-a]indole- or isoindolone-incorporated spirosuccinimides. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.152872] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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7
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Danilkina NA, Vasileva AA, Balova IA. A.E.Favorskii’s scientific legacy in modern organic chemistry: prototropic acetylene – allene isomerization and the acetylene zipper reaction. RUSSIAN CHEMICAL REVIEWS 2020. [DOI: 10.1070/rcr4902] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Alexei Evgrafovich Favorskii was an outstanding organic chemist who left a great scientific legacy as a result of long time and fruitful work. Most of the theoretically and practically important discoveries of A.E.Favorskii were made in the chemistry of acetylene and its derivatives. Nowadays, the reactions discovered by him, which include acetylene – allene isomerization, the Favorskii and retro-Favorskii reactions, the Favorskii rearrangement and the vinylation reaction, are widely used in industry and in laboratory synthesis. This review summarizes the main scientific achievements of A.E.Favorskii, as well as their development in modern organic chemistry. Much consideration is given to acetylene – allene isomerization as a convenient method for the synthesis of methyl-substituted acetylenes and to the acetylene zipper reaction as a synthetic tool for obtaining terminal acetylenes. The review presents examples of the application of these reactions in modern organic synthesis of complex molecules, including natural compounds and their analogues.
The bibliography includes 266 references.
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8
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Li W, Dong Z, Zhang Y, Zeng Z, Usman M, Liu WB. Cu-Catalyzed Arylation/Acyl Migration Cascade Reaction of Enaminones: Access to N-Fused Polycyclic and 2,3-Disubstituted Indoles. J Org Chem 2019; 84:7995-8005. [DOI: 10.1021/acs.joc.9b00866] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Weishuang Li
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan 430072, Hubei, China
| | - Zhan Dong
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan 430072, Hubei, China
| | - Yan Zhang
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan 430072, Hubei, China
| | - Zhen Zeng
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan 430072, Hubei, China
| | - Muhammad Usman
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan 430072, Hubei, China
| | - Wen-Bo Liu
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan 430072, Hubei, China
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9
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Casnati A, Perrone A, Mazzeo PP, Bacchi A, Mancuso R, Gabriele B, Maggi R, Maestri G, Motti E, Stirling A, Ca' ND. Synthesis of Imidazolidin-2-ones and Imidazol-2-ones via Base-Catalyzed Intramolecular Hydroamidation of Propargylic Ureas under Ambient Conditions. J Org Chem 2019; 84:3477-3490. [PMID: 30788963 DOI: 10.1021/acs.joc.9b00064] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The first organo-catalyzed synthesis of imidazolidin-2-ones and imidazol-2-ones via intramolecular hydroamidation of propargylic ureas is reported. The phosphazene base BEMP turned out to be the most active organo-catalyst compared with guanidine and amidine bases. Excellent chemo- and regioselectivities to five-membered cyclic ureas have been achieved under ambient conditions, with a wide substrate scope and exceptionally short reaction times (down to 1 min). A base-mediated isomerization step to an allenamide intermediate is the most feasible reaction pathway to give imidazol-2-ones, as suggested by DFT studies.
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Affiliation(s)
- Alessandra Casnati
- Department of Chemistry, Life Sciences and Environmental Sustainability , University of Parma , 43124 Parma , Italy
| | - Antonio Perrone
- Department of Chemistry, Life Sciences and Environmental Sustainability , University of Parma , 43124 Parma , Italy
| | - Paolo P Mazzeo
- Department of Chemistry, Life Sciences and Environmental Sustainability , University of Parma , 43124 Parma , Italy.,Biopharmanet-tec , Parco delle Scienze, 27/A , 43124 Parma , Italy
| | - Alessia Bacchi
- Department of Chemistry, Life Sciences and Environmental Sustainability , University of Parma , 43124 Parma , Italy.,Biopharmanet-tec , Parco delle Scienze, 27/A , 43124 Parma , Italy
| | - Raffaella Mancuso
- Dipartimento di Chimica e Tecnologie Chimiche , Università della Calabria , 87036 Arcavacata di Rende, Cosenza , Italy
| | - Bartolo Gabriele
- Dipartimento di Chimica e Tecnologie Chimiche , Università della Calabria , 87036 Arcavacata di Rende, Cosenza , Italy
| | - Raimondo Maggi
- Department of Chemistry, Life Sciences and Environmental Sustainability , University of Parma , 43124 Parma , Italy
| | - Giovanni Maestri
- Department of Chemistry, Life Sciences and Environmental Sustainability , University of Parma , 43124 Parma , Italy
| | - Elena Motti
- Department of Chemistry, Life Sciences and Environmental Sustainability , University of Parma , 43124 Parma , Italy
| | - András Stirling
- Theoretical Chemistry Research Group, Institute of Organic Chemistry , Research Centre for Natural Sciences , Budapest , Hungary
| | - Nicola Della Ca'
- Department of Chemistry, Life Sciences and Environmental Sustainability , University of Parma , 43124 Parma , Italy
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10
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Dong Z, Zhang XW, Li W, Li ZM, Wang WY, Zhang Y, Liu W, Liu WB. Synthesis of N-Fused Polycyclic Indoles via Ligand-Free Palladium-Catalyzed Annulation/Acyl Migration Reaction. Org Lett 2019; 21:1082-1086. [DOI: 10.1021/acs.orglett.8b04128] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Zhan Dong
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
| | - Xiao-Wen Zhang
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
| | - Weishuang Li
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
| | - Zi-Meng Li
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
| | - Wen-Yan Wang
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
| | - Yan Zhang
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
| | - Wei Liu
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
| | - Wen-Bo Liu
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
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11
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Ciulla MG, Zimmermann S, Kumar K. Cascade reaction based synthetic strategies targeting biologically intriguing indole polycycles. Org Biomol Chem 2019; 17:413-431. [DOI: 10.1039/c8ob02620c] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
In this review, cascade reaction based synthesis strategies delivering biologically intriguing indole polycycles are presented.
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Affiliation(s)
- Maria Gessica Ciulla
- Max-Planck-Institut für Molekulare Physiologie
- Abteilung Chemische Biologie
- 44227 Dortmund
- Germany
| | - Stefan Zimmermann
- Max-Planck-Institut für Molekulare Physiologie
- Abteilung Chemische Biologie
- 44227 Dortmund
- Germany
- Fakultät Chemie und Chemische Biologie Technische Universität Dortmund
| | - Kamal Kumar
- Max-Planck-Institut für Molekulare Physiologie
- Abteilung Chemische Biologie
- 44227 Dortmund
- Germany
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12
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Recent Advances in the Catalytic Synthesis of Imidazolidin-2-ones and Benzimidazolidin-2-ones. Catalysts 2019. [DOI: 10.3390/catal9010028] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
2-Imidazolidinone and its analogues are omnipresent structural motifs of pharmaceuticals, natural products, chiral auxiliaries, and intermediates in organic syntheses. Over the years, continuous efforts have been addressed to the development of sustainable and more efficient protocols for the synthesis of these heterocycles. This review gives a summary of the catalytic strategies to access imidazolidin-2-ones and benzimidazolidin-2-ones that have appeared in the literature from 2010 to 2018. Particularly important contributions beyond the timespan will be mentioned. The review is organized in four main chapters that identify the most common approaches to imidazolidin-2-one derivatives: (1) the direct incorporation of the carbonyl group into 1,2-diamines, (2) the diamination of olefins, (3) the intramolecular hydroamination of linear urea derivatives and (4) aziridine ring expansion. Methods not included in this classification will be addressed in the miscellaneous section.
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13
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Rajesh M, Puri S, Kant R, Sridhar Reddy M. Ag-Catalyzed Intramolecular Sequential Vicinal Diamination of Alkynes with Isocyanates: Synthesis of Fused Indole-Cyclic Urea Derivatives. J Org Chem 2017; 82:5169-5177. [DOI: 10.1021/acs.joc.7b00417] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
| | | | | | - Maddi Sridhar Reddy
- MCB
Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500 007, India
- Academy of Scientific and Innovative Research, New Delhi, 110001, India
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Belger K, Krause N. Smaller, faster, better: modular synthesis of unsymmetrical ammonium salt-tagged NHC-gold(I) complexes and their application as recyclable catalysts in water. Org Biomol Chem 2015; 13:8556-60. [PMID: 26175224 DOI: 10.1039/c5ob01286d] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Facile access towards a small library of unsymmetrical ammonium salt-tagged N-heterocyclic carbene gold(i) complexes is described, and their application as recyclable catalysts in cyclization reactions of acetylenic carboxylic acids and amides to lactones and lactams, respectively, in aqueous media is demonstrated. Catalyst was applied in the synthesis of 2-epi-clausemarine A ().
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Affiliation(s)
- Katrin Belger
- Organic Chemistry, Dortmund University of Technology, Otto-Hahn-Str. 6, D-44227 Dortmund, Germany.
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15
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Wang C, Huang K, Wang J, Wang H, Liu L, Chang W, Li J. Synthesis of Tetrasubstituted Pyrroles from Homopropargylic Aminesviaa Sonogashira Coupling/Intramolecular Hydroamination/Oxidation Sequence. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500350] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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16
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Huang L, Arndt M, Gooßen K, Heydt H, Gooßen LJ. Late Transition Metal-Catalyzed Hydroamination and Hydroamidation. Chem Rev 2015; 115:2596-697. [DOI: 10.1021/cr300389u] [Citation(s) in RCA: 739] [Impact Index Per Article: 82.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Liangbin Huang
- Department of Chemistry, TU Kaiserslautern, Erwin-Schrödinger-Strasse Geb. 54, 67663 Kaiserslautern, Germany
| | - Matthias Arndt
- Department of Chemistry, TU Kaiserslautern, Erwin-Schrödinger-Strasse Geb. 54, 67663 Kaiserslautern, Germany
| | - Käthe Gooßen
- Department of Chemistry, TU Kaiserslautern, Erwin-Schrödinger-Strasse Geb. 54, 67663 Kaiserslautern, Germany
| | - Heinrich Heydt
- Department of Chemistry, TU Kaiserslautern, Erwin-Schrödinger-Strasse Geb. 54, 67663 Kaiserslautern, Germany
| | - Lukas J. Gooßen
- Department of Chemistry, TU Kaiserslautern, Erwin-Schrödinger-Strasse Geb. 54, 67663 Kaiserslautern, Germany
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17
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Feng H, Jia H, Sun Z. Mild and Catalyst-Free Petasis/Decarboxylative Domino Reaction: Chemoselective Synthesis of N-Benzyl Propargylamines. J Org Chem 2014; 79:11812-8. [DOI: 10.1021/jo502349a] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Huangdi Feng
- College of Chemistry and
Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai 201620, China
| | - Huihui Jia
- College of Chemistry and
Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai 201620, China
| | - Zhihua Sun
- College of Chemistry and
Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai 201620, China
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18
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Ranjan A, Yerande R, Wakchaure PB, Yerande SG, Dethe DH. Base-Mediated Hydroamination of Propargylamine: A Regioselective Intramolecular 5-exo-dig Cycloisomerization en Route to Imidazole-2-thione. Org Lett 2014; 16:5788-91. [DOI: 10.1021/ol502871r] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Alok Ranjan
- Department
of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Ragini Yerande
- Acoris Research (A Division of Hikal Ltd.), 3A International Biotech Park, Hinjewadi, Pune 411057, Maharashtra, India
| | - Prasad B. Wakchaure
- Acoris Research (A Division of Hikal Ltd.), 3A International Biotech Park, Hinjewadi, Pune 411057, Maharashtra, India
| | - Swapnil G. Yerande
- Acoris Research (A Division of Hikal Ltd.), 3A International Biotech Park, Hinjewadi, Pune 411057, Maharashtra, India
| | - Dattatraya H. Dethe
- Department
of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
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Huguenot F, Delalande C, Vidal M. Metal-free 5-exo-dig cyclization of propargyl urea using TBAF. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.06.098] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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20
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Chen J, Zhang Z, Liu S, Yang C, Xia C. One-pot tandem synthesis of 2,3-unsubstituted indoles, an improved Leimgruber–Batchoindole synthesis. RSC Adv 2014. [DOI: 10.1039/c3ra45548c] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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21
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Wang T, Shi S, Pflästerer D, Rettenmeier E, Rudolph M, Rominger F, Hashmi ASK. Synthesis of Polycyclic Indole Skeletons by a Gold(I)-Catalyzed Cascade Reaction. Chemistry 2013; 20:292-6. [DOI: 10.1002/chem.201303539] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2013] [Indexed: 11/06/2022]
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22
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Jones C, Nguyen Q, Driver TG. Dirhodium(II) Carboxylate Catalyzed Formation of 1,2,3-Trisubstituted Indoles from Styryl Azides. Angew Chem Int Ed Engl 2013; 53:785-8. [DOI: 10.1002/anie.201308611] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Indexed: 12/11/2022]
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23
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Jones C, Nguyen Q, Driver TG. Dirhodium(II) Carboxylate Catalyzed Formation of 1,2,3-Trisubstituted Indoles from Styryl Azides. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201308611] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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24
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Piou T, Neuville L, Zhu J. Pd(II)-catalyzed intramolecular aminopalladation/direct C–H arylation under aerobic conditions: synthesis of pyrrolo[1,2-a]indoles. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.01.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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25
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Herrero MT, de Sarralde JD, SanMartin R, Bravo L, Domínguez E. Cesium Carbonate-Promoted Hydroamidation of Alkynes: Enamides, Indoles and the Effect of Iron(III) Chloride. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201200430] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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26
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Platon M, Amardeil R, Djakovitch L, Hierso JC. Progress in palladium-based catalytic systems for the sustainable synthesis of annulated heterocycles: a focus on indole backbones. Chem Soc Rev 2012; 41:3929-68. [DOI: 10.1039/c2cs15350e] [Citation(s) in RCA: 299] [Impact Index Per Article: 24.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Tsukano C, Yokouchi S, Girard AL, Kuribayashi T, Sakamoto S, Enomoto T, Takemoto Y. Platinum catalyzed 7-endo cyclization of internal alkynyl amides and its application to synthesis of the caprazamycin core. Org Biomol Chem 2012; 10:6074-86. [DOI: 10.1039/c2ob25111f] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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28
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Vicente R. Recent advances in indole syntheses: New routes for a classic target. Org Biomol Chem 2011; 9:6469-80. [DOI: 10.1039/c1ob05750b] [Citation(s) in RCA: 308] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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