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Siera H, Kreuzahler M, Wölper C, Haberhauer G. Regio‐ and Stereoselective Synthesis of Ynenamides through Gold(I)‐Catalyzed Hydroalkynylation of Ynamides. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Hannah Siera
- University of Duisburg-Essen: Universitat Duisburg-Essen Institut für Organische Chemie GERMANY
| | - Mathis Kreuzahler
- University of Duisburg-Essen: Universitat Duisburg-Essen Institut für Organische Chemie GERMANY
| | - Christoph Wölper
- University of Duisburg-Essen: Universitat Duisburg-Essen Institut für Anorganische Chemie GERMANY
| | - Gebhard Haberhauer
- Universität Duisburg-Essen Institut für Organische Chemie Universitätsstraße 7 45117 Essen GERMANY
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2
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Abstract
Metal catalysis has revolutionized synthetic chemistry, leading to entirely new, very efficient transformations, which enable access to complex functionalized molecules. One such new transformation method is the haloalkynylation reaction, in which both a halogen atom and an alkynyl unit are transferred to an unsaturated carbon‐carbon bond. This minireview summarizes the development of metal‐catalyzed haloalkynylation reactions since their beginning about a decade ago. So far, arynes, alkenes and alkynes have been used as unsaturated systems and the reactivities of these systems are summarized in individual chapters of the minireview. Especially, the last few years have witnessed a rapid development due to gold‐catalyzed reactions. Here, we discuss how the choice of the catalytic system influences the regio‐ and stereoselectivity of the addition.
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Affiliation(s)
- Mathis Kreuzahler
- Institut für Organische Chemie, Universität Duisburg-Essen, Universitätsstraße 7, 45117, Essen, Germany
| | - Gebhard Haberhauer
- Institut für Organische Chemie, Universität Duisburg-Essen, Universitätsstraße 7, 45117, Essen, Germany
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3
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Kreuzahler M, Haberhauer G. Cyclopropenylmethyl Cation: A Concealed Intermediate in Gold(I)-Catalyzed Reactions. Angew Chem Int Ed Engl 2020; 59:17739-17749. [PMID: 32515893 PMCID: PMC7540476 DOI: 10.1002/anie.202006245] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Indexed: 11/11/2022]
Abstract
The last years have witnessed many gold-catalyzed reactions of alkynes. One of the most prominent species in the reaction of two alkyne units is the vinyl-substituted gold vinylidene intermediate. Here, we were able to show that the reaction of a haloacetylene and an alkyne proceeds via a hitherto overlooked intermediate, namely the cyclopropenylmethyl cation. The existence and relative stability of this concealed intermediate is verified by quantum chemical calculations and 13 C-labeling experiments. A comparison between the cyclopropenylmethyl cation and the well-known vinylidene intermediate reveals that the latter is more stable only for smaller cycles. However, this stability reverses in larger cycles. In the case of the smallest representative of both species, the vinylidene cation is the transition state en route to the cyclopropenylmethyl cation. The discovery of this intermediate should help to get a deeper understanding for gold-catalyzed carbon-carbon bond-forming reactions of alkynes. Furthermore, since enynes can be formed from the cyclopropenylmethyl cation, the inclusion of this intermediate should enable the development of new synthetic methods for the construction of larger cyclic halogenated and non-halogenated conjugated enyne systems.
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Affiliation(s)
- Mathis Kreuzahler
- Institut für Organische ChemieUniversität Duisburg-EssenUniversitätsstraße 745117EssenGermany
| | - Gebhard Haberhauer
- Institut für Organische ChemieUniversität Duisburg-EssenUniversitätsstraße 745117EssenGermany
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4
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Kreuzahler M, Haberhauer G. Cyclopropenylmethylkation – Ein verborgenes Intermediat in Gold(I)‐katalysierten Reaktionen. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202006245] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Mathis Kreuzahler
- Institut für Organische Chemie Universität Duisburg-Essen Universitätsstraße 7 45117 Essen Deutschland
| | - Gebhard Haberhauer
- Institut für Organische Chemie Universität Duisburg-Essen Universitätsstraße 7 45117 Essen Deutschland
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5
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Kreuzahler M, Haberhauer G. Gold(I)-Catalyzed Haloalkynylation of Aryl Alkynes: Two Pathways, One Goal. Angew Chem Int Ed Engl 2020; 59:9433-9437. [PMID: 32078231 PMCID: PMC7318269 DOI: 10.1002/anie.201916027] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Revised: 01/29/2020] [Indexed: 11/29/2022]
Abstract
Haloalkynylation reactions provide an efficient method for the simultaneous introduction of a halogen atom and an acetylenic unit. For the first time, we report a gold(I)‐catalyzed haloalkynylation of aryl alkynes that delivers exclusively the cis addition product. This method enables the simple synthesis of conjugated and halogenated enynes in yields of up to 90 %. Notably, quantum chemical calculations reveal an exceptional interplay between the place of the attack at the chloroacetylene: No matter which C−C bond is formed, the same enyne product is always formed. This is only possible through rearrangement of the corresponding skeleton. Hereby, one reaction pathway proceeds via a chloronium ion with a subsequent aryl shift; in the second case the corresponding vinyl cation is stabilized by a 1,3‐chlorine shift. 13C‐labeling experiments confirmed that the reaction proceeds through both reaction pathways.
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Affiliation(s)
- Mathis Kreuzahler
- Institut für Organische Chemie, Universität Duisburg-Essen, Universitätsstraße 7, 45117, Essen, Germany
| | - Gebhard Haberhauer
- Institut für Organische Chemie, Universität Duisburg-Essen, Universitätsstraße 7, 45117, Essen, Germany
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6
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Kreuzahler M, Haberhauer G. Gold(I)‐katalysierte Haloalkinylierung von Arylalkinen: Zwei Wege, ein Ziel. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201916027] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Mathis Kreuzahler
- Institut für Organische ChemieUniversität Duisburg-Essen Universitätsstraße 7 45117 Essen Deutschland
| | - Gebhard Haberhauer
- Institut für Organische ChemieUniversität Duisburg-Essen Universitätsstraße 7 45117 Essen Deutschland
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7
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Tian X, Song L, Farshadfar K, Rudolph M, Rominger F, Oeser T, Ariafard A, Hashmi ASK. Acyl Migration versus Epoxidation in Gold Catalysis: Facile, Switchable, and Atom-Economic Synthesis of Acylindoles and Quinoline Derivatives. Angew Chem Int Ed Engl 2020; 59:471-478. [PMID: 31622542 PMCID: PMC6972584 DOI: 10.1002/anie.201912334] [Citation(s) in RCA: 80] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Indexed: 12/13/2022]
Abstract
We report a switchable synthesis of acylindoles and quinoline derivatives via gold-catalyzed annulations of anthranils and ynamides. α-Imino gold carbenes, generated in situ from anthranils and an N,O-coordinated gold(III) catalyst, undergo electrophilic attack to the aryl π-bond, followed by unexpected and highly selective 1,4- or 1,3-acyl migrations to form 6-acylindoles or 5-acylindoles. With the (2-biphenyl)di-tert-butylphosphine (JohnPhos) ligand, gold(I) carbenes experienced carbene/carbonyl additions to deliver quinoline oxides. Some of these epoxides are valuable substrates for the preparation of 3-hydroxylquinolines, quinolin-3(4H)-ones, and polycyclic compounds via facile in situ rearrangements. The reaction can be efficiently conducted on a gram scale and the obtained products are valuable substrates for preparing other potentially useful compounds. A computational study explained the unexpected selectivities and the dependency of the reaction pathway on the oxidation state and ligands of gold. With gold(III) the barrier for the formation of the strained oxirane ring is too high; whereas with gold(I) this transition state becomes accessible. Furthermore, energetic barriers to migration of the substituents on the intermediate sigma-complexes support the observed substitution pattern in the final product.
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Affiliation(s)
- Xianhai Tian
- Institut für Organische ChemieHeidelberg UniversityIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Lina Song
- Institut für Organische ChemieHeidelberg UniversityIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Kaveh Farshadfar
- Department of ChemistryIslamic Azad University, Central Tehran Branch, PoonakTehranIran
| | - Matthias Rudolph
- Institut für Organische ChemieHeidelberg UniversityIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Frank Rominger
- Institut für Organische ChemieHeidelberg UniversityIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Thomas Oeser
- Institut für Organische ChemieHeidelberg UniversityIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Alireza Ariafard
- Department of ChemistryIslamic Azad University, Central Tehran Branch, PoonakTehranIran
- School of Physical SciencesUniversity of TasmaniaPrivate Bag 75HobartTasmania7001Australia
| | - A. Stephen K. Hashmi
- Institut für Organische ChemieHeidelberg UniversityIm Neuenheimer Feld 27069120HeidelbergGermany
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8
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Tian X, Song L, Farshadfar K, Rudolph M, Rominger F, Oeser T, Ariafard A, Hashmi ASK. Acyl Migration versus Epoxidation in Gold Catalysis: Facile, Switchable, and Atom‐Economic Synthesis of Acylindoles and Quinoline Derivatives. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201912334] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Xianhai Tian
- Institut für Organische Chemie Heidelberg University Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Lina Song
- Institut für Organische Chemie Heidelberg University Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Kaveh Farshadfar
- Department of Chemistry Islamic Azad University, Central Tehran Branch, Poonak Tehran Iran
| | - Matthias Rudolph
- Institut für Organische Chemie Heidelberg University Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Frank Rominger
- Institut für Organische Chemie Heidelberg University Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Thomas Oeser
- Institut für Organische Chemie Heidelberg University Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Alireza Ariafard
- Department of Chemistry Islamic Azad University, Central Tehran Branch, Poonak Tehran Iran
- School of Physical Sciences University of Tasmania Private Bag 75 Hobart Tasmania 7001 Australia
| | - A. Stephen K. Hashmi
- Institut für Organische Chemie Heidelberg University Im Neuenheimer Feld 270 69120 Heidelberg Germany
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9
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Yang Y, Schießl J, Zallouz S, Göker V, Gross J, Rudolph M, Rominger F, Hashmi ASK. Gold-Catalyzed C(sp 2 )-C(sp) Coupling by Alkynylation through Oxidative Addition of Bromoalkynes. Chemistry 2019; 25:9624-9628. [PMID: 31094025 DOI: 10.1002/chem.201902213] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Indexed: 12/20/2022]
Abstract
A gold(I)-catalyzed cascade cyclization-alkynylation of allenoates using alkynyl bromide to generate β-alkynyl-γ-butenolides was investigated. Whereas alkynyl iodides afforded significant amounts of the homo-coupling of two lactone units, alkynyl bromides led to a selective reaction, and a broad functional group tolerance was observed. Under the optimized reaction conditions, it was possible to directly synthesize a large range of β-alkynyl-γ-butenolides in moderate to good yields without the need for any external oxidant.
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Affiliation(s)
- Yangyang Yang
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Jasmin Schießl
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Sirine Zallouz
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Verena Göker
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Jürgen Gross
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Matthias Rudolph
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Frank Rominger
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - A Stephen K Hashmi
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
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10
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Chen C, Chen X, Zhang X, Wang S, Rao W, Chan PWH. Gold‐Catalyzed Dehydrogenative Cycloisomerization of 1,4‐Enyne Esters to 3,5‐Disubstituted Phenol Derivatives. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201701068] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Cuili Chen
- Jiangsu Key Laboratory of Biomass-based Green Fuels and Chemicals, College of Chemical Engineering Nanjing Forestry University Nanjing 210037 People's Republic of China
| | - Xianxiao Chen
- Jiangsu Key Laboratory of Biomass-based Green Fuels and Chemicals, College of Chemical Engineering Nanjing Forestry University Nanjing 210037 People's Republic of China
| | - Xiaoxiang Zhang
- Jiangsu Key Laboratory of Biomass-based Green Fuels and Chemicals, College of Chemical Engineering Nanjing Forestry University Nanjing 210037 People's Republic of China
| | - Shifa Wang
- Jiangsu Key Laboratory of Biomass-based Green Fuels and Chemicals, College of Chemical Engineering Nanjing Forestry University Nanjing 210037 People's Republic of China
| | - Weidong Rao
- Jiangsu Key Laboratory of Biomass-based Green Fuels and Chemicals, College of Chemical Engineering Nanjing Forestry University Nanjing 210037 People's Republic of China
| | - Philip Wai Hong Chan
- School of Chemistry Monash University Clayton, Victoria 3800 Australia
- Department of Chemistry University of Warwick Coventry CV4 7AL U.K
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11
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Kim K, Jung J, Heo HG, Oh CH. Structural and Mechanistic Revision for Gold-catalyzed Sequential Activation of Propargylic Carboxylates. B KOREAN CHEM SOC 2017. [DOI: 10.1002/bkcs.11179] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Kiseong Kim
- Department of Chemistry and Research Institute of Natural Science; Hanyang University; Seoul 04763 Korea
| | - Jaemun Jung
- Department of Chemistry and Research Institute of Natural Science; Hanyang University; Seoul 04763 Korea
| | - Hoon Gu Heo
- Department of Chemistry and Research Institute of Natural Science; Hanyang University; Seoul 04763 Korea
| | - Chang Ho Oh
- Department of Chemistry and Research Institute of Natural Science; Hanyang University; Seoul 04763 Korea
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12
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Martzel T, Lohier JF, Gaumont AC, Brière JF, Perrio S. Unique Reactivity of α-Substituted Electron-Deficient Allenes using Sulfinate Salts as Lewis Base Organocatalysts. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600929] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Thomas Martzel
- Normandie Univ; ENSICAEN, UNICAEN, CNRS, LCMT; 14000 Caen France
| | | | | | - Jean-François Brière
- Normandie Univ; INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014); 76000 Rouen France
| | - Stéphane Perrio
- Normandie Univ; ENSICAEN, UNICAEN, CNRS, LCMT; 14000 Caen France
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13
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Rao W, Boyle JW, Chan PWH. Gold‐Catalyzed Sequential Cyclization of 1‐En‐3,9‐Diyne Esters to Partially Hydrogenated 3
H
‐Dicyclopenta[
a
,
b
]naphthalenes. Chemistry 2016; 22:6532-6. [DOI: 10.1002/chem.201600915] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Indexed: 12/25/2022]
Affiliation(s)
- Weidong Rao
- Jiangsu Key Laboratory of Biomass-based Green Fuels and Chemicals College of Chemical Engineering Nanjing Forestry University Nanjing 210037 P. R. China
| | | | - Philip Wai Hong Chan
- School of Chemistry Monash University, Clayton Victoria 3800 Australia
- Department of Chemistry University of Warwick Coventry CV4 7AL UK
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14
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Pirovano V, Arpini E, Dell'Acqua M, Vicente R, Abbiati G, Rossi E. Gold(I)-Catalyzed Synthesis of TetrahydrocarbazolesviaCascade [3,3]-Propargylic Rearrangement/[4+2] Cycloaddition of Vinylindoles and Propargylic Esters. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201500913] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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15
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Zhu PL, Tang XY, Shi M. Gold-Catalyzed Intramolecular Cyclizations of Cyclopropenes with Propargylic Esters. ChemistryOpen 2015; 5:33-7. [PMID: 27308208 PMCID: PMC4906491 DOI: 10.1002/open.201500181] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Indexed: 01/14/2023] Open
Abstract
Homogeneous gold catalysts are interesting as they can act as potent carbophilic Lewis acids to activate the π bonds of alkynes, allenes, and alkenes. Many impressive applications for the formation of C−C or C−heteroatom bonds have been found due to the excellent functional group compatibility of these catalysts and the air and moisture tolerance of their reactions. Here, we have developed gold‐catalyzed novel intramolecular cycloisomerizations of nitrogen or oxygen‐tethered cyclopropenes with propargylic esters. The reaction proceeded through different pathways according to different substituent styles, affording 5‐azaspiro[2.5]oct‐7‐enes and bicyclo[4.1.0]heptanes.
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Affiliation(s)
- Peng-Long Zhu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals East China University of Science and Technology 130 Mei Long Road Shanghai 200237 P. R. China
| | - Xiang-Ying Tang
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 Linglin Lu Shanghai 200032 P. R. China
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals East China University of Science and Technology 130 Mei Long Road Shanghai 200237 P. R. China; State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 Linglin Lu Shanghai 200032 P. R. China
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16
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Rettenmeier E, Hansmann MM, Ahrens A, Rübenacker K, Saboo T, Massholder J, Meier C, Rudolph M, Rominger F, Hashmi ASK. Insights into the Gold-Catalyzed Propargyl Ester Rearrangement/Tandem Cyclization Sequence: Radical versus Gold Catalysis-Myers-Saito- versus Schmittel-Type Cyclization. Chemistry 2015; 21:14401-9. [DOI: 10.1002/chem.201501725] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2015] [Indexed: 11/10/2022]
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17
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Hatano M, Nishimura T. Hydroxoiridium/Chiral Diene Complexes as Effective Catalysts for Asymmetric Annulation of α-Oxo- and Iminocarboxamides with 1,3-Dienes. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/anie.201505382] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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18
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Hatano M, Nishimura T. Hydroxoiridium/Chiral Diene Complexes as Effective Catalysts for Asymmetric Annulation of α-Oxo- and Iminocarboxamides with 1,3-Dienes. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201505382] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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19
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Wang Z, Zheng H, Yang J, Xie X, She X. Gold(I)-Catalyzed Tandem Reaction ofγ-Amino-Substituted Propargylic Esters to Pyrrolines and its Application in the Formal Synthesis of (±)-Aphanorphine. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201401161] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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20
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Susanti D, Liu LJ, Rao W, Lin S, Ma DL, Leung CH, Chan PWH. Gold-Catalyzed Cycloisomerization and Diels-Alder Reaction of 1,4,9-Dienyne Esters to 3 a,6-Methanoisoindole Esters with Pro-Inflammatory Cytokine Antagonist Activity. Chemistry 2015; 21:9111-8. [DOI: 10.1002/chem.201500795] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Indexed: 11/10/2022]
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21
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Lauterbach T, Higuchi T, Hussong MW, Rudolph M, Rominger F, Mashima K, Hashmi ASK. Gold-Catalyzed Carbenoid Transfer Reactions of Diynes - Pinacol RearrangementversusRetro-Buchner Reaction. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201400849] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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22
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Yang JM, Tang XY, Shi M. Gold(I)-Catalyzed Intramolecular Cycloisomerization of Propargylic Esters with Furan Rings. Chemistry 2015; 21:4534-40. [DOI: 10.1002/chem.201500214] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Indexed: 12/14/2022]
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23
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Qiu Y, Zhou J, Fu C, Ma S. A General Diversified Synthesis of Carbazoles and the First Synthesis of Karapinchamine A. Chemistry 2014; 20:14589-93. [DOI: 10.1002/chem.201404769] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Indexed: 11/08/2022]
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24
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Rao W, Sally, Berry SN, Chan PWH. Gold-catalyzed cycloisomerization of 1,6,8-dienyne carbonates and esters to cis-cyclohepta-4,8-diene-fused pyrrolidines. Chemistry 2014; 20:13174-80. [PMID: 25113644 DOI: 10.1002/chem.201402500] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Indexed: 01/29/2023]
Abstract
A synthetic approach that provides access to cis-cyclohepta-4,8-diene-fused pyrrolidines efficiently through Au(I) -catalyzed cycloisomerization of 1,6,8-dienyne carbonates and esters at a low catalyst loading of 2 mol % is reported. Starting carbonates and esters with a pendant alkyl group on the terminal alkenyl carbon center were found to favor tandem 1,2-acyloxy migration/cyclopropanation followed by Cope rearrangement of the resulting cis-3-azabicyclo[3.1.0]hexane intermediate. On the other hand, substrates containing a terminal diene or starting materials in which the distal alkene moiety bears a phenyl substituent were observed to undergo competitive but reversible 1,3-acyloxy migration prior to the nitrogen-containing bicyclic ring formation. The delineated reaction mechanism also provides experimental evidence for the reversible interconversion between the oft-proposed organogold intermediates obtained in this step of the tandem process.
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Affiliation(s)
- Weidong Rao
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371 (Singapore), Fax: (+65) 67911961
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25
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Yuan W, Tang X, Wei Y, Shi M. Gold-Catalyzed Cycloisomerization of Yne-Vinylidenecyclopropanes: A Three-Carbon Synthon for [3+2] Cycloadditions. Chemistry 2014; 20:3198-204. [DOI: 10.1002/chem.201304579] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Indexed: 11/11/2022]
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26
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Zhdanko A, Maier ME. The Mechanism of Gold(I)-Catalyzed Hydroalkoxylation of Alkynes: An Extensive Experimental Study. Chemistry 2014; 20:1918-30. [DOI: 10.1002/chem.201303795] [Citation(s) in RCA: 91] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2013] [Revised: 11/25/2013] [Indexed: 11/07/2022]
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27
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Yu Y, Yang W, Pflästerer D, Hashmi ASK. Dehydrogenative Meyer-Schuster-like rearrangement: a gold-catalyzed reaction generating an alkyne. Angew Chem Int Ed Engl 2013; 53:1144-7. [PMID: 24338996 DOI: 10.1002/anie.201307647] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Indexed: 11/09/2022]
Abstract
Easily accessible propargylic esters are converted to the inverted alkynyl ketones in an oxidative gold-catalyzed reaction. Gagosz's catalyst in combination with PhI(OAc)2 is the best system for this conversion and 18 examples with yields up to 80 % are reported. The results indicate that the triple bond in the product is formed by elimination from a vinylgold intermediate. In a formal sense the new conversion overall is a dehydrogenative Meyer-Schuster rearrangement.
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Affiliation(s)
- Yang Yu
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg (Germany) http://www.hashmi.de
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Yu Y, Yang W, Pflästerer D, Hashmi ASK. Dehydrierende Meyer-Schuster-Umlagerung: Gold-katalysierte Synthese von Alkinen. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201307647] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Yang W, Yu Y, Zhang T, Hansmann MM, Pflästerer D, Hashmi ASK. Gold-Catalyzed Highly Diastereoselective Synthesis of Functionalized 3,4-Disubstituted ButyrolactamsviaPhosphatyloxy or Carbonate Double Migrations. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300158] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Oh CH, Kim JH, Piao L, Yu J, Kim SY. Gold carbenes from substituted propargyl acetates: intramolecular ene-type reactions to 2-acetoxynaphthalene derivatives. Chemistry 2013; 19:10501-5. [PMID: 23794486 DOI: 10.1002/chem.201301384] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Indexed: 11/09/2022]
Affiliation(s)
- Chang Ho Oh
- Department of Chemistry and Research Institute for Natural Science, Hanyang University, Sungdong-Gu, Seoul 133-791, Korea
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Yu Y, Yang W, Rominger F, Hashmi ASK. In-situ-Bildung nukleophiler Allene durch Gold-katalysierte Umlagerung von Propargylestern für hoch diastereoselektive intermolekulare C(sp3)-C(sp2)-Bindungsknüpfungen. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201302402] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Yu Y, Yang W, Rominger F, Hashmi ASK. In situ generation of nucleophilic allenes by the gold-catalyzed rearrangement of propargylic esters for the highly diastereoselective formation of intermolecular C(sp3)-C(sp2) bonds. Angew Chem Int Ed Engl 2013; 52:7586-9. [PMID: 23843175 DOI: 10.1002/anie.201302402] [Citation(s) in RCA: 90] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2013] [Indexed: 11/06/2022]
Abstract
New perspectives, in particular for the synthesis of isochromane derivatives (see scheme), are provided by the title reaction. Excellent diastereoselectivites are achieved in this reaction which proceeds through a gold-catalyzed 1,3-acyloxy migration. In some cases exclusively the Z isomer is detected.
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Affiliation(s)
- Yang Yu
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
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Yang W, Wang T, Yu Y, Shi S, Zhang T, Hashmi ASK. Nitrones as Trapping Reagents of α,β-Unsaturated Carbene Intermediates - [1,2]Oxazino[5,4-b]indoles by a Platinum- Catalyzed Intermolecular [3+3] Cycloaddition. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300338] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Pflästerer D, Dolbundalchok P, Rafique S, Rudolph M, Rominger F, Hashmi ASK. On the Gold-Catalyzed Intramolecular 7-exo-trigHydroamination of Allenes. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300154] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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