51
|
Murai K, Hayashi S, Takaichi N, Kita Y, Fujioka H. Tandem β-Enamino Ester Formation and Cyclization with o-Alkynyl Anilines Catalyzed by InBr3: Efficient Synthesis of β-(N-Indolyl)-α,β-unsaturated Esters. J Org Chem 2008; 74:1418-21. [DOI: 10.1021/jo802435b] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kenichi Murai
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka, 565-0871 Japan
| | - Shoko Hayashi
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka, 565-0871 Japan
| | - Nobuhiro Takaichi
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka, 565-0871 Japan
| | - Yasuyuki Kita
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka, 565-0871 Japan
| | - Hiromichi Fujioka
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka, 565-0871 Japan
| |
Collapse
|
52
|
Liu XT, Huang L, Zheng FJ, Zhan ZP. Indium(III) Chloride-Catalyzed Propargylation/Amination/Cycloisomerization Tandem Reaction: One-Pot Synthesis of Highly Substituted Pyrroles from Propargylic Alcohols, 1,3-Dicarbonyl Compounds and Primary Amines. Adv Synth Catal 2008. [DOI: 10.1002/adsc.200800473] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
53
|
Arcadi A. Alternative synthetic methods through new developments in catalysis by gold. Chem Rev 2008; 108:3266-325. [PMID: 18651778 DOI: 10.1021/cr068435d] [Citation(s) in RCA: 1346] [Impact Index Per Article: 84.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Antonio Arcadi
- Department of Chemistry, Chemical Engineering and Materials, University of L'Aquila, via Vetoio, 67010 Coppito (AQ), Italy.
| |
Collapse
|
54
|
England DB, Padwa A. Gold-Catalyzed Cycloisomerization of N-Propargylindole-2-carboxamides: Application toward the Synthesis of Lavendamycin Analogues. Org Lett 2008; 10:3631-4. [DOI: 10.1021/ol801385h] [Citation(s) in RCA: 111] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dylan B. England
- Department of Chemistry, Emory University, Atlanta, Georgia 30322
| | - Albert Padwa
- Department of Chemistry, Emory University, Atlanta, Georgia 30322
| |
Collapse
|
55
|
Affiliation(s)
- Nitin T. Patil
- Department of Chemistry, Graduate School of Science, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Yoshinori Yamamoto
- Department of Chemistry, Graduate School of Science, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| |
Collapse
|
56
|
Shen HC. Recent advances in syntheses of heterocycles and carbocycles via homogeneous gold catalysis. Part 1: Heteroatom addition and hydroarylation reactions of alkynes, allenes, and alkenes. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.01.081] [Citation(s) in RCA: 409] [Impact Index Per Article: 25.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
57
|
Xiao F, Chen Y, Liu Y, Wang J. Sequential catalytic process: synthesis of quinoline derivatives by AuCl3/CuBr-catalyzed three-component reaction of aldehydes, amines, and alkynes. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.01.046] [Citation(s) in RCA: 156] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
58
|
Cadierno V, Gimeno J, Nebra N. One-pot three-component catalytic synthesis of fully substituted pyrroles from readily available propargylic alcohols, 1,3-dicarbonyl compounds and primary amines. Chemistry 2008; 13:9973-81. [PMID: 17854104 DOI: 10.1002/chem.200701132] [Citation(s) in RCA: 78] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
A simple and highly efficient method for the preparation of fully substituted pyrroles, from readily accessible secondary propargylic alcohols, 1,3-dicarbonyl compounds and primary amines, has been developed. The one-pot multicomponent reaction, which is catalysed by the system [Ru(eta(3)-2-C(3)H(4)Me)(CO)(dppf)][SbF(6)]/CF(3)CO(2)H (dppf: 1,1'-bis(diphenylphosphanyl)ferrocene), involves initial propargylation of the 1,3-dicarbonyl compound promoted by CF(3)CO(2)H and subsequent condensation between the resulting gamma-keto alkyne and the primary amine to afford a propargylated beta-enamino ester or ketone, which undergoes a ruthenium-catalysed 5-exo-dig annulation to form the final pyrrole.
Collapse
Affiliation(s)
- Victorio Cadierno
- Departamento de Química Orgánica e Inorgánica, Instituto Universitario de Química Organometálica, Enrique Moles (Unidad Asociada al CSIC), Universidad de Oviedo, Julián Clavería 8, Oviedo, Spain
| | | | | |
Collapse
|
59
|
Binder JT, Crone B, Haug TT, Menz H, Kirsch SF. Direct Carbocyclization of Aldehydes with Alkynes: Combining Gold Catalysis with Aminocatalysis. Org Lett 2008; 10:1025-8. [DOI: 10.1021/ol800092p] [Citation(s) in RCA: 150] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jörg T. Binder
- Department Chemie, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching, Germany
| | - Benedikt Crone
- Department Chemie, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching, Germany
| | - Timm T. Haug
- Department Chemie, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching, Germany
| | - Helge Menz
- Department Chemie, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching, Germany
| | - Stefan F. Kirsch
- Department Chemie, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching, Germany
| |
Collapse
|
60
|
Corma A, González-Arellano C, Iglesias M, Navarro MT, Sánchez F. Synthesis of bifunctional Au–Sn organic–inorganic catalysts for acid-free hydroamination reactions. Chem Commun (Camb) 2008:6218-20. [DOI: 10.1039/b810310k] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
61
|
Abbiati G, Arcadi A, Canevari V, Rossi E. Palladium catalyzed synthesis of 4-substituted-2-phenylimidazoles from N-propargyl-benzamidine. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.09.153] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
62
|
Hashmi ASK, Schäfer S, Wölfle M, Diez Gil C, Fischer P, Laguna A, Blanco MC, Gimeno MC. Gold-Catalyzed Benzylic CH Activation at Room Temperature. Angew Chem Int Ed Engl 2007; 46:6184-7. [PMID: 17623280 DOI: 10.1002/anie.200701521] [Citation(s) in RCA: 143] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- A Stephen K Hashmi
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany.
| | | | | | | | | | | | | | | |
Collapse
|
63
|
Hashmi A, Schäfer S, Wölfle M, Diez Gil C, Fischer P, Laguna A, Blanco M, Gimeno M. Goldkatalysierte benzylische C-H-Aktivierung bei Raumtemperatur. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200701521] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
64
|
Li H, Guan B, Wang W, Xing D, Fang Z, Wan X, Yang L, Shi Z. Aerobic oxidation of alcohol in aqueous solution catalyzed by gold. Tetrahedron 2007. [DOI: 10.1016/j.tet.2007.05.117] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
65
|
Affiliation(s)
- A Stephen K Hashmi
- Institut für Organische Chemie, Universität Stuttgart, 70569 Stuttgart, Germany.
| |
Collapse
|
66
|
Binder JT, Crone B, Kirsch SF, Liébert C, Menz H. Synthesis of Heterocyclic Systems by Transition-Metal-Catalyzed Cyclization-Migration Reactions – A Diversity-Oriented Strategy for the Construction of Spirocyclic 3(2H)-Furanones and 3-Pyrrolones. European J Org Chem 2007. [DOI: 10.1002/ejoc.200601060] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
67
|
Abstract
Catalysis by gold has rapidly become a hot topic in chemistry, with a new discovery being made almost every week. Gold is equally effective as a heterogeneous or a homogeneous catalyst and in this Review we attempt to marry these two facets to demonstrate this new found and general efficacy of gold. The latest discoveries are placed within a historical context, but the main thrust is to highlight the new catalytic possibilities that gold-catalyzed reactions currently offer the synthetic chemist, in particular in redox reactions and nucleophilic additions to pi systems. Indeed gold has proved to be an effective catalyst for many reactions for which a catalyst had not been previously identified, and many new discoveries are still expected.
Collapse
Affiliation(s)
- A Stephen K Hashmi
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | | |
Collapse
|
68
|
Binder JT, Kirsch SF. Synthesis of highly substituted pyrroles via a multimetal-catalyzed rearrangement-condensation-cyclization domino approach. Org Lett 2007; 8:2151-3. [PMID: 16671804 DOI: 10.1021/ol060664z] [Citation(s) in RCA: 191] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reaction: see text] In a convenient one-pot process, easily accessed propargyl vinyl ethers and aromatic amines are effectively converted into tetra- and pentasubstituted 5-methylpyrroles which can further be transformed into 5-formylpyrroles via IBX-mediated oxidation. The cascade reaction proceeds through a silver(I)-catalyzed propargyl-Claisen rearrangement, an amine condensation, and a gold(I)-catalyzed 5-exo-dig heterocyclization.
Collapse
Affiliation(s)
- Jörg T Binder
- Department Chemie, Technische Universität München, Garching, Germany
| | | |
Collapse
|
69
|
Vizer SA, Dedeshko EH, Yerzhanov KB, Dembitsky VM. A new approach to the synthesis of 1,2,3,5-tetrasubstituted pyrroles. HETEROATOM CHEMISTRY 2007. [DOI: 10.1002/hc.20265] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
70
|
|
71
|
Jiménez-Núñez E, Echavarren AM. Molecular diversity through gold catalysis with alkynes. Chem Commun (Camb) 2006:333-46. [PMID: 17220965 DOI: 10.1039/b612008c] [Citation(s) in RCA: 767] [Impact Index Per Article: 42.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this feature article we cover most recent efforts in gold-catalysed transformations, highlighting the wide molecular diversity that can be achieved, in particular with regard to the formation of C-C bonds. Mechanistic interpretations of some cyclisations are based on our own work on the skeletal rearrangement of 1,6-enynes.
Collapse
Affiliation(s)
- Eloísa Jiménez-Núñez
- Institute of Chemical Research of Catalonia (ICIQ), Av. Països Catalans 16, 43007 Tarragona, Spain
| | | |
Collapse
|
72
|
Hashmi ASK, Rudolph M, Schymura S, Visus J, Frey W. Gold Catalysis: Alkylideneoxazolines and -oxazoles from Intramolecular Hydroamination of an Alkyne by a Trichloroacetimidate. European J Org Chem 2006. [DOI: 10.1002/ejoc.200600572] [Citation(s) in RCA: 145] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
73
|
Affiliation(s)
- Ross A. Widenhoefer
- P. M. Gross Chemical Laboratory, Duke University, Durham, North Carolina 27708‐0346, USA
| | - Xiaoqing Han
- P. M. Gross Chemical Laboratory, Duke University, Durham, North Carolina 27708‐0346, USA
| |
Collapse
|
74
|
Shi M, Liu LP, Tang J. Gold(I)-Catalyzed Domino Ring-Opening Ring-Closing Hydroamination of Methylenecyclopropanes (MCPs) with Sulfonamides: Facile Preparation of Pyrrolidine Derivatives. Org Lett 2006; 8:4043-6. [PMID: 16928069 DOI: 10.1021/ol0614830] [Citation(s) in RCA: 116] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Reaction of methylenecyclopropanes 1 with sulfonamides produces the corresponding pyrrolidine derivatives 3 in moderate to good yields under the catalysis of Au(I) via a domino ring-opening ring-closing hydroamination process.
Collapse
Affiliation(s)
- Min Shi
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Lu, Shanghai 200032, China.
| | | | | |
Collapse
|
75
|
Harkat H, Weibel JM, Pale P. A mild access to γ- or δ-alkylidene lactones through gold catalysis. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.06.129] [Citation(s) in RCA: 108] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
76
|
|
77
|
Affiliation(s)
- Jianwei Sun
- Department of Chemistry, University of Chicago, 5735 South Ellis Avenue, Chicago, IL 60637, USA
| | | |
Collapse
|
78
|
Hashmi ASK, Haufe P, Schmid C, Rivas Nass A, Frey W. Asymmetric Rhodium-Catalyzed Hydrogenation Meets Gold-Catalyzed Cyclization: Enantioselective Synthesis of 8-Hydroxytetrahydroisoquinolines. Chemistry 2006; 12:5376-82. [PMID: 16683280 DOI: 10.1002/chem.200600192] [Citation(s) in RCA: 119] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Different furyl-substituted (Z)-dehydroamino acid derivatives were hydrogenated with the rhodium/Mandyphos(OMe)-system to give enantiomeric excesses between 80 and 98 %. The absolute configuration of the newly formed stereogenic center was determined by anomalous diffraction to be R. These chiral furyl alanines were transferred into 8-hydroxytetrahydroisoquinolines by employing gold-catalyzed arene synthesis as the key step. During the latter reaction sequence, also including either a propargylation or a reduction, a protection of the hydroxy group, and a subsequent propargylation, no racemization of the stereogenic center was observed. With very electron-rich furans, instead of the 8-hydroxytetrahydroquinolines as products, furans anellated to seven-membered rings with exocyclic C-C double bonds are formed under the same reaction conditions.
Collapse
Affiliation(s)
- A Stephen K Hashmi
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany.
| | | | | | | | | |
Collapse
|
79
|
Nishina N, Yamamoto Y. Gold-Catalyzed Intermolecular Hydroamination of Allenes with Arylamines and Resulting High Chirality Transfer. Angew Chem Int Ed Engl 2006; 45:3314-7. [PMID: 16619319 DOI: 10.1002/anie.200600331] [Citation(s) in RCA: 237] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Naoko Nishina
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
| | | |
Collapse
|
80
|
Nishina N, Yamamoto Y. Gold-Catalyzed Intermolecular Hydroamination of Allenes with Arylamines and Resulting High Chirality Transfer. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200600331] [Citation(s) in RCA: 113] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
81
|
Zhang L. Tandem au-catalyzed 3,3-rearrangement-[2 + 2] cycloadditions of propargylic esters: expeditious access to highly functionalized 2,3-indoline-fused cyclobutanes. J Am Chem Soc 2006; 127:16804-5. [PMID: 16316224 DOI: 10.1021/ja056419c] [Citation(s) in RCA: 415] [Impact Index Per Article: 23.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The treatment of readily available propargylic indole-3-acetates with a catalytic amount of AuCl(PPh3)/AgSbF6 leads to tandem activations of the propargylic esters and the in situ generated allenylic esters, resulting in expeditious access to highly functionalized cyclobutanes with fused 2,3-indoline and gamma-lactone rings and an exocyclic E-double bond through sequential 3,3-rearrangement and [2 + 2] cyclization.
Collapse
Affiliation(s)
- Liming Zhang
- Department of Chemistry/216, University of Nevada, Reno, 89557, USA.
| |
Collapse
|
82
|
Xing D, Guan B, Cai G, Fang Z, Yang L, Shi Z. Gold(I)-Catalyzed Oxidative Cleavage of a C−C Double Bond in Water. Org Lett 2006; 8:693-6. [PMID: 16468744 DOI: 10.1021/ol052830t] [Citation(s) in RCA: 166] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[reaction: see text] Oxidative cleavage of the C=C bond to afford ketone or aldehyde products with tert-butyl hydrogenperoxide (TBHP) as the oxidant can be catalyzed by AuCl with neocuproine (1) in water.
Collapse
Affiliation(s)
- Dong Xing
- Department of Chemistry, East China Normal University, Shanghai 200062, China
| | | | | | | | | | | |
Collapse
|
83
|
Mamane V, Hannen P, Fürstner A. Synthesis of phenanthrenes and polycyclic heteroarenes by transition-metal catalyzed cycloisomerization reactions. Chemistry 2006; 10:4556-75. [PMID: 15378635 DOI: 10.1002/chem.200400220] [Citation(s) in RCA: 521] [Impact Index Per Article: 28.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Readily available biphenyl derivatives containing an alkyne unit at one of their ortho-positions are converted into substituted phenanthrenes on exposure to catalytic amounts of either PtCl2, AuCl, AuCl3, GaCl3 or InCl3 in toluene. This 6-endo-dig cyclization likely proceeds through initial pi-complexation of the alkyne unit followed by interception of the resulting eta2-metal species by the adjacent arene ring. The reaction is inherently modular, allowing for substantial structural variations and for the incorporation of substituents at any site of the phenanthrene product. Moreover, it is readily extended to the heterocyclic series as exemplified by the preparation of benzoindoles, benzocarbazoles, naphthothiophenes, as well as bridgehead nitrogen heterocycles such as pyrrolo[1,2-a]quinolines. Depending on the chosen catalyst, biaryls bearing halo-alkyne units can either be converted into the corresponding 10-halo-phenanthrenes or into the isomeric 9-halo-phenanthrenes; in the latter case, the concomitant 1,2-halide shift is best explained by assuming a metal vinylidene species as the reactive intermediate. The scope of this novel method for the preparation of polycyclic arenes is illustrated by the total synthesis of a series of polyoxygenated phenanthrenes that are close relatives of the anticancer agent combretastatin A-4, as well as by the total synthesis of the aporphine alkaloid O-methyl-dehydroisopiline and its naturally occurring symmetrical dimer.
Collapse
Affiliation(s)
- Victor Mamane
- Max-Planck-Institut für Kohlenforschung, 45470 Mülheim/Ruhr, Germany
| | | | | |
Collapse
|
84
|
Guan B, Xing D, Cai G, Wan X, Yu N, Fang Z, Yang L, Shi Z. Highly Selective Aerobic Oxidation of Alcohol Catalyzed by a Gold(I) Complex with an Anionic Ligand. J Am Chem Soc 2005; 127:18004-5. [PMID: 16366542 DOI: 10.1021/ja055398j] [Citation(s) in RCA: 165] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Highly selective aerobic oxidation of alcohols to carbonyl compounds was catalyzed by a gold(I) complex with an anionic ligand in solution.
Collapse
Affiliation(s)
- Bingtao Guan
- The Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | | | | | | | | | | | | | | |
Collapse
|
85
|
|
86
|
Abbiati G, Arcadi A, Canevari V, Capezzuto L, Rossi E. Palladium-Assisted Multicomponent Synthesis of 2-Aryl-4-aminoquinolines and 2-Aryl-4-amino[1,8]naphthyridines. J Org Chem 2005; 70:6454-60. [PMID: 16050709 DOI: 10.1021/jo050882q] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A palladium-mediated multicomponent domino reaction leading to 2-aryl-4-amino-quinolines and 2-aryl-4-amino[1,8]naphthyridines is reported. The scope of the reaction was examined using carbon monoxide, two 2-ethynyl-arylamines, four aryl iodides, and 10 primary amines as substrates. The selection of the appropriate catalytic system was achieved testing several palladium/phosphine systems and overrides previously reported drawbacks associated with the use of primary amines in related reactions. Moreover several features concerning the role of both palladium [(0) and (II)] and phosphines are reported.
Collapse
Affiliation(s)
- Giorgio Abbiati
- Istituto di Chimica Organica Alessandro Marchesini, Facoltà di Farmacia, Università degli Studi di Milano, Via Venezian, 21, 20133 Milano, Italy
| | | | | | | | | |
Collapse
|
87
|
Alfonsi M, Arcadi A, Aschi M, Bianchi G, Marinelli F. Gold-Catalyzed Reactions of 2-Alkynyl-phenylamines with α,β-Enones. J Org Chem 2005; 70:2265-73. [PMID: 15760214 DOI: 10.1021/jo047793i] [Citation(s) in RCA: 171] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] The gold-catalyzed reaction of 2-alkynyl-phenylamines with alpha,beta-enones represents a new general one-pot entry into C-3-alkyl-indoles by sequential reactions. Gold-catalyzed sequential cyclization/alkylation, N-alkylation/cyclization, or N-alkylation/cyclization/alkylation reactions leading to different indoles can be directed by changing the 2-alkynyl-phenylamine 1/alpha,beta-enone 3 ratio and the reaction temperature. Unusual gold-catalyzed rearrangement reaction of indoles are observed at 140 degrees C. New gold-catalyzed formation of propargyl-alkyl ether under mild conditions and the hydration reaction of N-acetyl-2-ethynyl-phenylamine are reported.
Collapse
Affiliation(s)
- Maria Alfonsi
- Dipartimento di Chimica, Ingegneria Chimica e Materiali, Facoltà di Scienze, Università di L'Aquila, Via Vetoio, 67010 Capitol (AQ), Italy
| | | | | | | | | |
Collapse
|
88
|
Abbiati G, Arcadi A, Beccalli E, Rossi E. Novel intramolecular cyclization of N-alkynyl heterocycles containing proximate nucleophiles. Tetrahedron Lett 2003. [DOI: 10.1016/s0040-4039(03)01202-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
89
|
Demir AS, Akhmedov IM, Sesenoglu Ö. Synthesis of 1,2,3,5-tetrasubstituted pyrrole derivatives from 2-(2-bromoallyl)-1,3-dicarbonyl compounds. Tetrahedron 2002. [DOI: 10.1016/s0040-4020(02)01298-x] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
90
|
Arcadi A, Di Giuseppe S, Marinelli F, Rossi E. Conversion of homochiral amines and α-amino esters to their chiral 1,2,3,5-substituted pyrrole derivatives via gold-catalysed amination/annulation reactions of 2-propynyl-1,3-dicarbonyl compounds. ACTA ACUST UNITED AC 2001. [DOI: 10.1016/s0957-4166(01)00468-2] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|