1
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Kalb AE, Liu M, Bosso MI, Uyeda C. A dinickel-catalyzed three-component cycloaddition of vinylidenes. Chem Sci 2022; 13:11190-11196. [PMID: 36320482 PMCID: PMC9516891 DOI: 10.1039/d2sc02696a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Accepted: 08/17/2022] [Indexed: 09/20/2023] Open
Abstract
A dinickel catalyst promotes the [2 + 2 + 1]-cycloaddition of two aldehyde equivalents and a vinylidene. The resulting methylenedioxolane products can be deprotected in one pot under acidic conditions to reveal α-hydroxy ketones. This method provides convenient access to unsymmetrical alkyl-substituted α-hydroxy ketones, which are challenging to synthesize selectively using cross-benzoin reactions. Mechanistic studies are consistent with an initial migratory insertion of the aldehyde into a dinickel bridging vinylidene. Insertion of the second aldehyde followed by C-O reductive elimination furnishes the cycloadduct. Under dilute conditions, an enone side product is generated due to a competing β-hydride elimination from the proposed metallacyclic intermediate. A DFT model consistent with the concentration-dependent formation of the methylenedioxolane and enone is presented.
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Affiliation(s)
- Annah E Kalb
- Department of Chemistry, Purdue University West Lafayette Indiana 47907 USA
| | - Mingxin Liu
- Department of Chemistry, Purdue University West Lafayette Indiana 47907 USA
| | - Megan I Bosso
- Department of Chemistry, Purdue University West Lafayette Indiana 47907 USA
| | - Christopher Uyeda
- Department of Chemistry, Purdue University West Lafayette Indiana 47907 USA
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2
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He X, Zhong K, Heng D, Zeng Z, Ni H, Bai R, Lan Y. Is the metal involved or not? A computational study of Cu(I)-catalyzed [4 + 1] annulation of vinyl indole and carbene precursor. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.10.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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3
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Feliciano A, Vázquez JL, Benítez-Puebla LJ, Velazco-Cabral I, Cruz Cruz D, Delgado F, Vázquez MA. Fischer Carbene Complexes: A Glance at Two Decades of Research on Higher-Order Cycloaddition Reactions. Chemistry 2021; 27:8233-8251. [PMID: 33871119 DOI: 10.1002/chem.202005434] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Indexed: 01/06/2023]
Abstract
The structure of Fischer carbene complexes (FCCs) is electron deficient. If bearing an α,β-unsaturated system, it can generate a wide variety of compounds by undergoing many different transformations, including higher-order cycloadditions. The latter are described as pericyclic reactions in which more than six electrons participate. These reactions have been employed in various areas of organic synthesis, resulting in highly selective compounds with a broad range of scaffolds. The first studies on higher-order cycloadditions involving FCCs frequently yielded competing byproducts. Many groups have attempted to increase selectivity by exploring distinct reaction conditions, reagents and co-catalysts (e. g., metal-mediated cycloadditions). The present review is the first to focus exclusively on using higher-order cycloadditions involving FCCs to synthesize carbocycles and heterocycles. Based on two decades of reports, an analysis is made of the main aspects of the mechanisms proposed for higher-order cycloadditions and the structural diversity obtained by the substituent effect.
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Affiliation(s)
- Alberto Feliciano
- Departamento de Química, Universidad de Guanajuato, Noria Alta S/N, 36050, Guanajuato, Gto, Mexico
| | - Juan L Vázquez
- Departamento de Química, Universidad de Guanajuato, Noria Alta S/N, 36050, Guanajuato, Gto, Mexico
| | - Luis J Benítez-Puebla
- Departamento de Química, Universidad de Guanajuato, Noria Alta S/N, 36050, Guanajuato, Gto, Mexico
| | - Iván Velazco-Cabral
- Departamento de Química, Universidad de Guanajuato, Noria Alta S/N, 36050, Guanajuato, Gto, Mexico
| | - David Cruz Cruz
- Departamento de Química, Universidad de Guanajuato, Noria Alta S/N, 36050, Guanajuato, Gto, Mexico
| | - Francisco Delgado
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prol. Carpio y Plan de Ayala S/N, 11340, Cd. de Mexico, Mexico
| | - Miguel A Vázquez
- Departamento de Química, Universidad de Guanajuato, Noria Alta S/N, 36050, Guanajuato, Gto, Mexico
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4
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Synthesis of novel 2,5-substituted p-aminophenols and 2,5-substituted p-quinones in a one-pot reaction between α-alkoxyvinyl(ethoxy)carbene complexes, amines and alkynes. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2020.121360] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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5
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Mashabane TL, Ramollo GK, Kleinhans G, De Doncker S, Siangwata S, Fernandes MA, Lemmerer A, Smith GS, Bezuidenhout DI. Tunable Rh(I) Fischer carbene complexes for application in the hydroformylation of 1-octene. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2020.121341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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6
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Takano S, Shiomi R, Morimoto Y, Kochi T, Kakiuchi F. Carbon-Carbon Bond Formation via Catalytically Generated Aminocarbene Complexes: Rhodium-Catalyzed Hydroaminative Cyclization of Enynes with Secondary Amines. Angew Chem Int Ed Engl 2020; 59:11754-11757. [PMID: 32304126 DOI: 10.1002/anie.202002710] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Indexed: 01/19/2023]
Abstract
We report a hydroaminative cyclization of enynes using phosphine-quinolinolato rhodium catalysts. The hydroaminative cyclization of 2-vinylphenylacetylene derivatives with secondary amines gives 2-aminoindenes in good yields. The reaction is considered to proceed through carbon-carbon bond formation on a catalytically generated aminocarbene ligand.
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Affiliation(s)
- Shotaro Takano
- Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan
| | - Ryosuke Shiomi
- Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan
| | - Yoshihiko Morimoto
- Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan
| | - Takuya Kochi
- Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan
| | - Fumitoshi Kakiuchi
- Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan
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7
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Takano S, Shiomi R, Morimoto Y, Kochi T, Kakiuchi F. Carbon–Carbon Bond Formation via Catalytically Generated Aminocarbene Complexes: Rhodium‐Catalyzed Hydroaminative Cyclization of Enynes with Secondary Amines. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202002710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Shotaro Takano
- Department of Chemistry Faculty of Science and Technology Keio University 3-14-1 Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
| | - Ryosuke Shiomi
- Department of Chemistry Faculty of Science and Technology Keio University 3-14-1 Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
| | - Yoshihiko Morimoto
- Department of Chemistry Faculty of Science and Technology Keio University 3-14-1 Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
| | - Takuya Kochi
- Department of Chemistry Faculty of Science and Technology Keio University 3-14-1 Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
| | - Fumitoshi Kakiuchi
- Department of Chemistry Faculty of Science and Technology Keio University 3-14-1 Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
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8
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Ramírez-Gómez A, Gutiérrez-Hernández AI, Alvarado-Castillo MA, Toscano RA, Ortega-Alfaro MC, López-Cortés JG. Selenoamides as powerful scaffold to build imidazo[1,5-a]pyridines using a grinding protocol. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2020.121315] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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9
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Ramollo GK, Strydom I, Fernandes MA, Lemmerer A, Ojwach SO, van Wyk JL, Bezuidenhout DI. Fischer Carbene Complexes of Iridium(I) for Application in Catalytic Transfer Hydrogenation. Inorg Chem 2020; 59:4810-4815. [PMID: 32212623 PMCID: PMC7311058 DOI: 10.1021/acs.inorgchem.0c00079] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
New examples of the very rare class
of iridium(I) Fischer carbene complexes (FCCs) are reported from the
facile transmetalation from group 6 FCCs. Postcomplexation modification
of either the carbene ligand or the ancillary coligands results in
a tunable IrI metal center, for unprecedented application
as a (pre)catalyst in a benchmark transfer hydrogenation reaction.
The introduction of an aminocarbene ligand with a pendant N-donor
moiety capable of hemilabile coordination yielded the best catalytic
results with turnover frequencies reaching 445 h–1 and requiring 0.1 mol % catalyst and 0.5 mol % base loading, respectively. A benchmark transfer hydrogenation is
catalyzed by an iridium(I) acyclic aminocarbene of the Fischer type
with a pendant N donor.
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Affiliation(s)
- G Kabelo Ramollo
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Johannesburg 2050, South Africa
| | - Ian Strydom
- Chemistry Department, University of Pretoria, Private Bag X20, Hatfield 0028, Pretoria, South Africa
| | - Manuel A Fernandes
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Johannesburg 2050, South Africa
| | - Andreas Lemmerer
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Johannesburg 2050, South Africa
| | - Stephen O Ojwach
- School of Chemistry and Physics, University of KwaZulu-Natal, Private Bag X01, Scottsville, Pietermaritzburg, South Africa
| | - Juanita L van Wyk
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Johannesburg 2050, South Africa
| | - Daniela I Bezuidenhout
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Johannesburg 2050, South Africa.,Laboratory of Inorganic Chemistry, Environmental and Chemical Engineering, University of Oulu, P.O. Box 3000, 90014 Oulu, Finland
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10
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Benítez-Puebla LJ, López J, Flores-Álamo M, Cruz DC, Peña-Cabrera E, Delgado F, Tamariz J, Vázquez MA. Alkynyl Fischer Carbenes as a Platform for the Production of Difluorodiazaborinine Complexes via β-Amino-azadienes. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Luis J. Benítez-Puebla
- Departamento de Química; Universidad de Guanajuato; Noria Alta s/n, Col. Noria Alta C.P. 36050 Guanajuato Gto. México
| | - Julio López
- Departamento de Química; Universidad de Guanajuato; Noria Alta s/n, Col. Noria Alta C.P. 36050 Guanajuato Gto. México
| | - Marcos Flores-Álamo
- Unidad de Servicios de Apoyo a la Investigación; Universidad Nacional Autónoma de México; Ciudad Universitaria; C.P. 04510 CDMX México
| | - David Cruz Cruz
- Departamento de Química; Universidad de Guanajuato; Noria Alta s/n, Col. Noria Alta C.P. 36050 Guanajuato Gto. México
| | - Eduardo Peña-Cabrera
- Departamento de Química; Universidad de Guanajuato; Noria Alta s/n, Col. Noria Alta C.P. 36050 Guanajuato Gto. México
| | - Francisco Delgado
- Departamento de Química Orgánica; Escuela Nacional de Ciencias Biológicas-Instituto Politécnico Nacional; Prol. Carpio y Plan de Ayala s/n, Col. 11340 Santo Tomás CDMX México
| | - Joaquín Tamariz
- Departamento de Química Orgánica; Escuela Nacional de Ciencias Biológicas-Instituto Politécnico Nacional; Prol. Carpio y Plan de Ayala s/n, Col. 11340 Santo Tomás CDMX México
| | - Miguel A. Vázquez
- Departamento de Química; Universidad de Guanajuato; Noria Alta s/n, Col. Noria Alta C.P. 36050 Guanajuato Gto. México
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11
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Cabeza JA, García‐Álvarez P, Gómez‐Gallego M, González‐Álvarez L, Merinero AD, Sierra MA. Two Types of σ‐Allenyl Complexes from Reactions of Silylenes and Germylenes with Chromium Fischer Alkynyl(alkoxy)carbenes. Chemistry 2019; 25:8635-8642. [DOI: 10.1002/chem.201901579] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Indexed: 12/20/2022]
Affiliation(s)
- Javier A. Cabeza
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)Departamento de Química Orgánica e InorgánicaUniversidad de Oviedo 33071 Oviedo Spain
| | - Pablo García‐Álvarez
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)Departamento de Química Orgánica e InorgánicaUniversidad de Oviedo 33071 Oviedo Spain
| | - Mar Gómez‐Gallego
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)Departamento de Química OrgánicaUniversidad Complutense 28040 Madrid Spain
| | - Laura González‐Álvarez
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)Departamento de Química Orgánica e InorgánicaUniversidad de Oviedo 33071 Oviedo Spain
| | - Alba D. Merinero
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)Departamento de Química OrgánicaUniversidad Complutense 28040 Madrid Spain
| | - Miguel A. Sierra
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)Departamento de Química OrgánicaUniversidad Complutense 28040 Madrid Spain
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12
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Cabeza JA, García-Álvarez P, Gómez-Gallego M, González-Álvarez L, Merinero AD, Sierra MA. Unexpected Zwitterionic Allenyls from Silylenes and a Fischer Alkynylcarbene: A Remarkable Silylene-Promoted Rearrangement. Chemistry 2019; 25:2222-2225. [DOI: 10.1002/chem.201806275] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Indexed: 01/17/2023]
Affiliation(s)
- Javier A. Cabeza
- Centro de Innovación en Química Avanzada (ORFEO-CINQA); Departamento de Química Orgánica e Inorgánica; Universidad de Oviedo; 33071 Oviedo Spain
| | - Pablo García-Álvarez
- Centro de Innovación en Química Avanzada (ORFEO-CINQA); Departamento de Química Orgánica e Inorgánica; Universidad de Oviedo; 33071 Oviedo Spain
| | - Mar Gómez-Gallego
- Centro de Innovación en Química Avanzada (ORFEO-CINQA); Departamento de Química Orgánica; Universidad Complutense; 28040 Madrid Spain
| | - Laura González-Álvarez
- Centro de Innovación en Química Avanzada (ORFEO-CINQA); Departamento de Química Orgánica e Inorgánica; Universidad de Oviedo; 33071 Oviedo Spain
| | - Alba D. Merinero
- Centro de Innovación en Química Avanzada (ORFEO-CINQA); Departamento de Química Orgánica; Universidad Complutense; 28040 Madrid Spain
| | - Miguel A. Sierra
- Centro de Innovación en Química Avanzada (ORFEO-CINQA); Departamento de Química Orgánica; Universidad Complutense; 28040 Madrid Spain
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13
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Gómez A, Funes-Ardoiz I, Sampedro D, Santamaría J. Unexpected [4 + 2] Cycloaddition through Chromium Non-Heteroatom-Stabilized Alkynyl Carbene Complexes: Regioselective Access to Substituted 6-Azaindoles. Org Lett 2018; 20:4099-4102. [DOI: 10.1021/acs.orglett.8b01650] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Aránzazu Gómez
- Departamento de Química Orgánica e Inorgánica e Instituto Universitario de Química Organometálica “Enrique Moles”, Unidad Asociada al C.S.I.C. Universidad de Oviedo, C/Julián Clavería 8, 33006 Oviedo, Spain
| | - Ignacio Funes-Ardoiz
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química (CISQ), Madre de Dios 53, 26006 Logroño, Spain
| | - Diego Sampedro
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química (CISQ), Madre de Dios 53, 26006 Logroño, Spain
| | - Javier Santamaría
- Departamento de Química Orgánica e Inorgánica e Instituto Universitario de Química Organometálica “Enrique Moles”, Unidad Asociada al C.S.I.C. Universidad de Oviedo, C/Julián Clavería 8, 33006 Oviedo, Spain
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14
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Anjali BA, Suresh CH. Electronic effect of ligands vs. reduction potentials of Fischer carbene complexes of chromium: a molecular electrostatic potential analysis. NEW J CHEM 2018. [DOI: 10.1039/c8nj04184a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Molecular electrostatic potential at the chromium centre (VCr) emerges as a powerful predictor of reduction potential (E0).
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Affiliation(s)
- Bai Amutha Anjali
- Chemical Sciences and Technology Division
- CSIR-National Institute for Interdisciplinary Science and Technology
- Trivandrum 695019
- India
- Academy of Scientific & Innovative Research (AcSIR)
| | - Cherumuttathu H. Suresh
- Chemical Sciences and Technology Division
- CSIR-National Institute for Interdisciplinary Science and Technology
- Trivandrum 695019
- India
- Academy of Scientific & Innovative Research (AcSIR)
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15
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Wang K, Wu F, Zhang Y, Wang J. Pd-Catalyzed Cross-Coupling of Terminal Alkynes with Chromium(0) Fischer Carbene Complexes. Org Lett 2017; 19:2861-2864. [DOI: 10.1021/acs.orglett.7b01096] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kang Wang
- Beijing
National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of Ministry of Education,
College of Chemistry, Peking University, Beijing 100871, China
| | - Fengjin Wu
- Beijing
National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of Ministry of Education,
College of Chemistry, Peking University, Beijing 100871, China
| | - Yan Zhang
- Beijing
National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of Ministry of Education,
College of Chemistry, Peking University, Beijing 100871, China
| | - Jianbo Wang
- Beijing
National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of Ministry of Education,
College of Chemistry, Peking University, Beijing 100871, China
- State
Key Laboratory of Organometallic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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16
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Barluenga J, Aguilar E. Group 6 Metal Fischer Carbene Complexes. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2017. [DOI: 10.1016/bs.adomc.2017.04.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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17
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Abd El-Aal HAK. Friedel–Crafts Chemistry. Part 48. Concise Synthesis of Condensed Azaheterocyclic [1,8]naphthyridinones, Azepino-, Azocino-, and Azoninoquinoline Systems via Friedel–Crafts Ring Closures. Aust J Chem 2017; 70:1082. [DOI: 10.1071/ch17108] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Unprecedented construction of a novel series of quinoline heteropolycycles (tetracyclic keto-analogues of [1,8]naphthyridinones, azepino-, azocino- and azonino[2,3-b]quinolinones systems) 10a–i by Friedel–Crafts cycliacylation reactions is described. Starting heterocyclic acids precursors 3a–i were prepared from easily accessible 2-chloroquinoline-3-carbaldehyde 1 via a three different synthetic pathways. Acid-catalyzed ring closures of the resulting tosylated acids were achieved under the influence of both Brønsted and Lewis acid catalysts. The present strategy enables a straightforward synthesis to fused tetracyclic quinolinone skeletons as demonstrated by concise and atom-economical syntheses.
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18
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Andraos J. A new paradigm for designing ring construction strategies for green organic synthesis: implications for the discovery of multicomponent reactions to build molecules containing a single ring. Beilstein J Org Chem 2016; 12:2420-2442. [PMID: 28144310 PMCID: PMC5238618 DOI: 10.3762/bjoc.12.236] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 10/26/2016] [Indexed: 11/23/2022] Open
Abstract
A new way of developing novel synthesis strategies for the construction of monocyclic rings found in organic molecules is presented. The method is based on the visual application of integer partitioning to chemical structures. Two problems are addressed: (1) the determination of the total number of possible ways to construct a given ring by 2-, 3-, and 4-component couplings; and (2) the systematic enumeration of those possibilities. The results of the method are illustrated using cyclohexanone, pyrazole, and the Biginelli adduct as target ring systems with a view to discover new and greener strategies for their construction using multicomponent reactions. The application of the method is also extended to various heterocycles found in many natural products and pharmaceuticals.
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Affiliation(s)
- John Andraos
- CareerChem, 504-1129 Don Mills Road, Toronto, ON M3B 2W4 Canada
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19
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Chu GM, Guerrero-Martínez A, Ramírez de Arellano C, Fernández I, Sierra MA. Remote Control by π-Conjugation of the Emissive Properties of Fischer Carbene-BODIPY Dyads. Inorg Chem 2016; 55:2737-47. [DOI: 10.1021/acs.inorgchem.5b02448] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Gong M. Chu
- Departamento de Química Orgánica
I and Centro de Innovación en Química Avanzada (ORFEO-CINQA),
Facultad de Química, Universidad Complutense, 28040 Madrid, Spain
| | - Andrés Guerrero-Martínez
- Departamento de Química
Física I, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | | | - Israel Fernández
- Departamento de Química Orgánica
I and Centro de Innovación en Química Avanzada (ORFEO-CINQA),
Facultad de Química, Universidad Complutense, 28040 Madrid, Spain
| | - Miguel A. Sierra
- Departamento de Química Orgánica
I and Centro de Innovación en Química Avanzada (ORFEO-CINQA),
Facultad de Química, Universidad Complutense, 28040 Madrid, Spain
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20
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Funes-Ardoiz I, González J, Santamaría J, Sampedro D. Understanding the Mechanism of the Divergent Reactivity of Non-Heteroatom-Stabilized Chromium Carbene Complexes with Furfural Imines: Formation of Benzofurans and Azetines. J Org Chem 2016; 81:1565-70. [DOI: 10.1021/acs.joc.5b02729] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ignacio Funes-Ardoiz
- Department
of Chemistry, Center for Research in Chemical Synthesis (CISQ), University of La Rioja, Madre de Dios, 53, 26006 Logroño, Spain
| | - Jairo González
- Department
of Organic and Inorganic Chemistry and University Institute of Organometallic
Chemistry “Enrique Moles”, University of Oviedo, C/Julián Clavería, 8, 33006 Oviedo, Spain
| | - Javier Santamaría
- Department
of Organic and Inorganic Chemistry and University Institute of Organometallic
Chemistry “Enrique Moles”, University of Oviedo, C/Julián Clavería, 8, 33006 Oviedo, Spain
| | - Diego Sampedro
- Department
of Chemistry, Center for Research in Chemical Synthesis (CISQ), University of La Rioja, Madre de Dios, 53, 26006 Logroño, Spain
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21
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López J, de la Cruz FN, Flores-Conde MI, Flores-Álamo M, Delgado F, Tamariz J, Vázquez MA. Regioselective Multicomponent Synthesis of 2,4,6-Trisubstituted Phenols from Fischer Alkynyl Carbene Complexes. European J Org Chem 2016. [DOI: 10.1002/ejoc.201501211] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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22
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Santamaría J, Aguilar E. Beyond Fischer and Schrock carbenes: non-heteroatom-stabilized group 6 metal carbene complexes – a general overview. Org Chem Front 2016. [DOI: 10.1039/c6qo00206d] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Non-heteroatom-stabilized group 6 metal carbene complexes: versatile reagents or intermediates in stoichiometric or catalytic reactions in organic synthesis.
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Affiliation(s)
- Javier Santamaría
- Instituto Universitario de Química Organometálica “Enrique Moles”
- Departamento de Química Orgánica e Inorgánica
- Universidad de Oviedo
- Oviedo
- Spain
| | - Enrique Aguilar
- Instituto Universitario de Química Organometálica “Enrique Moles”
- Departamento de Química Orgánica e Inorgánica
- Universidad de Oviedo
- Oviedo
- Spain
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23
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García-Rodríguez J, González J, Santamaría J, Suárez-Sobrino ÁL, Rodríguez MA. Higher-order cyclization reactions of alkenyl Fischer carbene complexes: a new selective all-carbon [8 + 2] cyclization with 8-methoxyheptafulvene and computational mechanistic analysis. Dalton Trans 2016; 45:11353-61. [DOI: 10.1039/c6dt01465h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new all-carbon [8 +2] cycloaddition of alkenyl Fischer carbene complexes is described.
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Affiliation(s)
- Jaime García-Rodríguez
- Instituto Universitario de Química Organometálica “Enrique Moles” and Departamento de Química Orgánica e Inorgánica
- Universidad de Oviedo
- 33071 Oviedo
- Spain
| | - Jairo González
- Instituto Universitario de Química Organometálica “Enrique Moles” and Departamento de Química Orgánica e Inorgánica
- Universidad de Oviedo
- 33071 Oviedo
- Spain
| | - Javier Santamaría
- Instituto Universitario de Química Organometálica “Enrique Moles” and Departamento de Química Orgánica e Inorgánica
- Universidad de Oviedo
- 33071 Oviedo
- Spain
| | - Ángel L. Suárez-Sobrino
- Instituto Universitario de Química Organometálica “Enrique Moles” and Departamento de Química Orgánica e Inorgánica
- Universidad de Oviedo
- 33071 Oviedo
- Spain
| | - Miguel A. Rodríguez
- Departamento de Química
- Centro de Investigación en Síntesis Química
- Universidad de la Rioja
- 26006 Logroño
- Spain
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24
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Ramollo GK, López-Gómez MJ, Liles DC, Matsinha LC, Smith GS, Bezuidenhout DI. Rhodium(I) Ferrocenylcarbene Complexes: Synthesis, Structural Determination, Electrochemistry, and Application as Hydroformylation Catalyst Precursors. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00843] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- G. Kabelo Ramollo
- Department
of Chemistry, University of Pretoria, Private Bag X20, Hatfield 0028, South Africa
| | - María J. López-Gómez
- Department
of Chemistry, University of Pretoria, Private Bag X20, Hatfield 0028, South Africa
| | - David C. Liles
- Department
of Chemistry, University of Pretoria, Private Bag X20, Hatfield 0028, South Africa
| | - Leah C. Matsinha
- Department
of Chemistry, University of Cape Town, Private Bag, Rondebosch 7701, South Africa
| | - Gregory S. Smith
- Department
of Chemistry, University of Cape Town, Private Bag, Rondebosch 7701, South Africa
| | - Daniela I. Bezuidenhout
- Department
of Chemistry, University of Pretoria, Private Bag X20, Hatfield 0028, South Africa
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25
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Martinez-Ariza G, Ayaz M, Roberts SA, Rabanal-León WA, Arratia-Pérez R, Hulme C. The Synthesis of Stable, Complex Organocesium Tetramic Acids through the Ugi Reaction and Cesium-Carbonate-Promoted Cascades. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201504377] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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26
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Martinez‐Ariza G, Ayaz M, Roberts SA, Rabanal‐León WA, Arratia‐Pérez R, Hulme C. The Synthesis of Stable, Complex Organocesium Tetramic Acids through the Ugi Reaction and Cesium‐Carbonate‐Promoted Cascades. Angew Chem Int Ed Engl 2015; 54:11672-6. [DOI: 10.1002/anie.201504377] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Revised: 07/16/2015] [Indexed: 11/07/2022]
Affiliation(s)
- Guillermo Martinez‐Ariza
- Department of Pharmacology and Toxicology, The University of Arizona, BSW Room #351, 1041 E. Lowell St., Tucson, AZ 85721 (USA)
| | - Muhammad Ayaz
- Department of Pharmacology and Toxicology, The University of Arizona, BSW Room #351, 1041 E. Lowell St., Tucson, AZ 85721 (USA)
| | - Sue A. Roberts
- Department of Chemistry and Biochemistry, The University of Arizona (USA)
| | - Walter A. Rabanal‐León
- Universidad Andrés Bello, Facultad de Ciencias Exactas, Ph.D. Program in Molecular Physical Chemistry, Relativistic Molecular Physics (ReMoPhys) Group, Av. República 275, Santiago 8370146 (Chile)
| | - Ramiro Arratia‐Pérez
- Universidad Andrés Bello, Facultad de Ciencias Exactas, Ph.D. Program in Molecular Physical Chemistry, Relativistic Molecular Physics (ReMoPhys) Group, Av. República 275, Santiago 8370146 (Chile)
| | - Christopher Hulme
- Department of Pharmacology and Toxicology, The University of Arizona, BSW Room #351, 1041 E. Lowell St., Tucson, AZ 85721 (USA)
- Department of Chemistry and Biochemistry, The University of Arizona (USA)
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27
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Stereoisomeric products of electrochemical reduction of heterocyclic Fischer aminocarbene Cr(0) complexes. Development of the electrochemistry-mass spectrometry tandem approach using biphasic (acetonitrile-hexane) preparative electrolysis. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2014.10.110] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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28
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Andrada DM, Zoloff Michoff ME, de Rossi RH, Granados AM. Nucleophilic substitution in ionizable Fischer thiocarbene complexes: steric effect of the alkyl substituent on the heteroatom. Dalton Trans 2015; 44:5520-34. [PMID: 25698135 DOI: 10.1039/c4dt03618b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A detailed kinetic study has been carried out for the aminolysis of ionizable Fischer thiocarbene complexes (CO)5M[double bond, length as m-dash]C(SR)CH3 (M = Cr, W; R = iPr, nBu, cHex, tBu) with five primary amines and one secondary amine in aqueous acetonitrile solutions (50% MeCN-50% water (v/v)). The observed rate constants for the reaction with primary amines showed a first-order dependence on the amine concentration, while with morpholine, the rate constant has second-order dependence. The general base catalysis process was confirmed by the variation of the rate constants with the concentration of an external catalyst and the pH. The results agree with a stepwise mechanism where the nucleophilic addition to the carbene carbon to produce a tetrahedral intermediate (T±) is the first step, followed by a rapid deprotonation of to form the anion T- which leads to the products by general-acid catalysed leaving group (-SR) expulsion. In general, it was found that the chromium complexes are less reactive than the tungsten analogues. The obtained Brønsted parameters for the nucleophilic addition (βnuc) indicate that C-N bond formation has made little progress at the transition state. By using Charton's correlation, the role that the steric factor plays throughout the mechanism has been unraveled. The nucleophilic addition to the thiocarbenes is less sensitive to steric effects than the alkoxycarbenes regardless of the nature of the metal centre. Conversely, the steric effects on the general-base catalysis can be strong depending on the volume of the catalyst and the metal centre. On the basis of the structure-reactivity coefficients β and ψ and comparison with alkoxycarbene complexes, esters and thiolesters, insights into the main factors ruling the reactivity in terms of transition state imbalances are discussed.
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Affiliation(s)
- Diego M Andrada
- Departamento de Química Orgánica, INFIQC, CONICET and Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria X5000HUA, Córdoba, Argentina.
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29
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Déry M, Assouvie K, Heinrich N, Rajotte I, Lefebvre LPD, Legault MA, Spino C. N-Heterocycles from Chromium Aminocarbenes. Org Lett 2015; 17:1312-5. [DOI: 10.1021/acs.orglett.5b00313] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Martin Déry
- Université de Sherbrooke, Département de Chimie, 2500 boul. Université, Sherbrooke, QC J1K 2R1, Canada
| | - Kevin Assouvie
- Université de Sherbrooke, Département de Chimie, 2500 boul. Université, Sherbrooke, QC J1K 2R1, Canada
| | - Nora Heinrich
- Université de Sherbrooke, Département de Chimie, 2500 boul. Université, Sherbrooke, QC J1K 2R1, Canada
| | - Isabelle Rajotte
- Université de Sherbrooke, Département de Chimie, 2500 boul. Université, Sherbrooke, QC J1K 2R1, Canada
| | | | - Marc-André Legault
- Université de Sherbrooke, Département de Chimie, 2500 boul. Université, Sherbrooke, QC J1K 2R1, Canada
| | - Claude Spino
- Université de Sherbrooke, Département de Chimie, 2500 boul. Université, Sherbrooke, QC J1K 2R1, Canada
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30
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De la Campa R, Flórez J. Water freezing as a regiocontrol element in the multicomponent assembly of cyclic enones. Chemistry 2015; 21:1854-9. [PMID: 25418199 DOI: 10.1002/chem.201404670] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Indexed: 11/10/2022]
Abstract
Regioselective synthesis of dialkoxy 2-cyclopentenones and 2-cyclohexenones with novel substitution patterns has been accomplished by the one-pot combination of three simple starting materials (chromium carbene complex, Weinreb acetamide lithium enolate and 1-alkoxyallenyllithium) under either anhydrous conditions or water-promoted solidification of the reaction mixture. These results revealed an unprecedented water-freezing effect that plays a key role to completely reverse the regioselectivity of the intramolecular carbometalation of an allene moiety.
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Affiliation(s)
- Raquel De la Campa
- Departamento de Química Orgánica e Inorgánica and Instituto Universitario de Química Organometálica "Enrique Moles", Universidad de Oviedo, Julián Clavería 8, 33006 Oviedo, Asturias (Spain), Fax: (+34) 985-103446
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31
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Abd El-Aal HAK, Khalaf AA, El-Khawaga AMA. Friedel–Crafts Chemistry. Part 43. A Convergent Construction of Some New Bridged Aza-Bicyclic Analogues of Azocine, Azonine, and Azecine via Friedel–Crafts Ring Closures. Aust J Chem 2015; 68:404. [DOI: 10.1071/ch14284] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Our present study provides an expedient general approach for the synthesis of some novel bridged dibenzo-azocinone, -azoninone, -azecinone, -azocine, -azonine, and -azecine derivatives via Friedel–Crafts intramolecular ring-closure reactions. The methodology is realized by a four-step protocol involving first preparation of 7-methyl-3,3-diphenylindoline through the reduction of 7-methyl-3,3-diphenylindolin-2-one followed by N-alkylations with different haloesters (α-, β- or γ-). The resulting indoline ester derivatives were allowed to react both by addition of Grignard reagents to afford alcohols and by hydrolysis to afford acids. Particular attention has been given to the novel structures especially in regard to the promising pharmaceutical and therapeutic values associated with their skeletons.
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32
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van der Westhuizen B, Matthäus Speck J, Korb M, Bezuidenhout DI, Lang H. (Spectro)electrochemical investigations on (ferrocenyl)thiophenes modified by tungsten Fischer carbenes. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2014.08.025] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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33
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Bezuidenhout DI, van der Westhuizen B, Strydom I, Swarts PJ, Swarts JC, Fernández I. Synthesis and electrochemical investigation of chromium(0) ferrocenyl-substituted carbene complexes. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2014.07.068] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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34
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Tobrman T, Jurásková I, Dvořák D. Negishi Cross-Coupling Reaction as a Simple and Efficient Route to Functionalized Amino and Alkoxy Carbene Complexes of Chromium, Molybdenum, and Tungsten. Organometallics 2014. [DOI: 10.1021/om500925m] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tomáš Tobrman
- Department of Organic Chemistry, Institute of Chemical Technology, Prague, Technická 5, 166 28 Prague 6, Czech Republic
| | - Ivana Jurásková
- Department of Organic Chemistry, Institute of Chemical Technology, Prague, Technická 5, 166 28 Prague 6, Czech Republic
| | - Dalimil Dvořák
- Department of Organic Chemistry, Institute of Chemical Technology, Prague, Technická 5, 166 28 Prague 6, Czech Republic
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35
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Theoretical Predictions of Redox Potentials of Fischer-Type Chromium Aminocarbene Complexes. Organometallics 2014. [DOI: 10.1021/om500259u] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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36
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Landman M, Levell T, van Rooyen PH, Conradie J. Conformation analysis of triphenylphosphine in trans and cis triphenylphosphine-substituted Fischer carbene complexes. J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2014.02.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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37
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González J, Gómez A, Funes-Ardoiz I, Santamaría J, Sampedro D. Intermolecular and Regioselective Access to Polysubstituted Benzo- and Dihydrobenzo[c]azepine Derivatives: Modulating the Reactivity of Group 6 Non-Heteroatom-Stabilized Alkynyl Carbene Complexes. Chemistry 2014; 20:7061-8. [DOI: 10.1002/chem.201400281] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Indexed: 11/05/2022]
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38
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Bezuidenhout DI, van der Westhuizen B, Swarts PJ, Chatturgoon T, Munro OQ, Fernández I, Swarts JC. Redox Behaviour of Cymantrene Fischer Carbene Complexes in Designing Organometallic Multi-tags. Chemistry 2014; 20:4974-85. [DOI: 10.1002/chem.201304711] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Indexed: 12/31/2022]
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39
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40
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Raubenheimer HG. Fischer carbene complexes remain favourite targets, and vehicles for new discoveries. Dalton Trans 2014; 43:16959-73. [DOI: 10.1039/c4dt01943a] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Fifty years after their introduction, Fischer-type carbene complexes still enthral synthetic and theoretical chemists interested in their preparation and characterization.
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Affiliation(s)
- H. G. Raubenheimer
- Department of Chemistry and Polymer Science
- University of Stellenbosch
- Matieland 7602, South Africa
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41
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Chu GM, Guerrero-Martínez A, Fernández I, Sierra MÁ. Tuning the Photophysical Properties of BODIPY Molecules by π-Conjugation with Fischer Carbene Complexes. Chemistry 2013; 20:1367-75. [DOI: 10.1002/chem.201303952] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2013] [Indexed: 01/08/2023]
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42
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Bezuidenhout DI, Fernández I, van der Westhuizen B, Swarts PJ, Swarts JC. Electrochemical and Computational Study of Tungsten(0) Ferrocene Complexes: Observation of the Mono-Oxidized Tungsten(0) Ferrocenium Species and Intramolecular Electronic Interactions. Organometallics 2013. [DOI: 10.1021/om400865m] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Daniela I. Bezuidenhout
- Department of Chemistry, University of Pretoria, Private Bag
X20, Hatfield 0028, Pretoria, South Africa
| | - Israel Fernández
- Departamento de Quı́mica Orgánica
I, Facultad de Ciencias Quı́micas, Universidad Complutense, 28040 Madrid, Spain
| | | | - Pieter J. Swarts
- Chemistry Department, University of the Free State, P.O. Box
339, Bloemfontein 9300, South Africa
| | - Jannie C. Swarts
- Chemistry Department, University of the Free State, P.O. Box
339, Bloemfontein 9300, South Africa
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43
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Kvapilová H, Hoskovcová I, Kayanuma M, Daniel C, Záliš S. Electronic excitations in Fischer-type Cr and W aminocarbene complexes: a combined ab initio and experimental study. J Phys Chem A 2013; 117:11456-63. [PMID: 24117112 DOI: 10.1021/jp4074027] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The influence of the substitution on the carbene ligand in the series of Fischer-type Cr and W aminocarbene complexes was studied experimentally by UV-vis spectroscopy and theoretically by comparative ab initio SA-CASSCF/MS-CASPT2 and TD-DFT methods. Both calculations interpreted the experimental UV-vis spectra and their variations caused by substitution effects well. TD-DFT analysis of individual transitions using electron density redistributions indicated that the variation of the absorption spectra due to substitution is accompanied by a change in the character of the low-lying excited states participating in the visible bands. Correlated MS-CASPT2 calculations confirmed the TD-DFT assignments of the lowest-lying transitions in the visible region almost quantitatively.
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Affiliation(s)
- Hana Kvapilová
- J. Heyrovský Institute of Physical Chemistry, v.v.i., Academy of Sciences of the Czech Republic , Dolejškova 3, 182 23 Prague 8, Czech Republic
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44
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Lerum RV, Russo CM, Marquez JE, Chisholm JD. A Rhodium-Catalyzed Tandem Alkyne Dimerization/ 1,4-Addition Reaction. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300743] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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45
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Déry M, Lefebvre LPD, Aissa K, Spino C. N-Heteropolycyclic compounds from the formal intramolecular (4 + 1)-cycloaddition of chromium aminocarbenes. Org Lett 2013; 15:5456-9. [PMID: 24117372 DOI: 10.1021/ol4025887] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Chromium aminocarbenes tethered to dienes of all three electronic natures undergo an efficient intramolecular (4 + 1)-cycloaddition to give N-heteropolycyclic compounds. Ligands on chromium had a profound effect on the course of the reaction.
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Affiliation(s)
- Martin Déry
- Université de Sherbooke , Département de Chimie, 2500 Boul. Université, Sherbrooke, QC, Canada, J1K 2R1
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46
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van der Westhuizen B, Swarts PJ, van Jaarsveld LM, Liles DC, Siegert U, Swarts JC, Fernández I, Bezuidenhout DI. Substituent Effects on the Electrochemical, Spectroscopic, and Structural Properties of Fischer Mono- and Biscarbene Complexes of Chromium(0). Inorg Chem 2013; 52:6674-84. [DOI: 10.1021/ic4007422] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
| | - Pieter J. Swarts
- Chemistry Department, University of the Free State, P.O. Box 339, Bloemfontein
9300, South Africa
| | - Louise M. van Jaarsveld
- Chemistry Department, University of Pretoria, Private Bag X20, Hatfield 0028,
Pretoria, South Africa
| | - David C. Liles
- Chemistry Department, University of Pretoria, Private Bag X20, Hatfield 0028,
Pretoria, South Africa
| | - Uwe Siegert
- Chemistry Department, University of the Free State, P.O. Box 339, Bloemfontein
9300, South Africa
| | - Jannie C. Swarts
- Chemistry Department, University of the Free State, P.O. Box 339, Bloemfontein
9300, South Africa
| | - Israel Fernández
- Departamento
de Química
Orgánica I, Facultad de Química, Universidad Complutense, 28040 Madrid, Spain
| | - Daniela I. Bezuidenhout
- Chemistry Department, University of Pretoria, Private Bag X20, Hatfield 0028,
Pretoria, South Africa
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47
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Chu GM, Fernández I, Sierra MA. Synthesis, Structure, and Electronic Properties of Extended π-Conjugated Group 6 Fischer Alkoxy-Bis(carbene) Complexes. Chemistry 2013; 19:5899-908. [DOI: 10.1002/chem.201204512] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2012] [Indexed: 12/28/2022]
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48
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Synthesis, characterization and electrochemical investigation of hetaryl chromium(0) aminocarbene complexes. Electrochim Acta 2012. [DOI: 10.1016/j.electacta.2012.05.027] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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49
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Cedillo-Cruz A, Ortega-Alfaro MC, López-Cortés JG, Toscano RA, Penieres-Carrillo JG, Alvarez-Toledano C. Synthesis of Fischer type-carbene complexes containing a coordinated thioimidate structural motif. Dalton Trans 2012; 41:10568-75. [PMID: 22832666 DOI: 10.1039/c2dt31297b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
This paper describes a tandem strategy to synthesize a series of new Fischer carbene complexes [(CO)(4)M=C[N-(CH(2))(4)-]CH=C(NRR')(SR'); M = Cr, W; R = Ar, R' = Me, -(CH(2))(2)-] with a thioimide or thiazoline fragment, in which the sulfur or nitrogen atom is coordinated to a metal center, depending on the nature of alkylating groups included as R'. We have trapped by protonation the proposed intermediate as the thioamide 12 [(CO)(5)W=[N-(CH(2))(4)-]CH(2)C(S)NHPh], which reveals the pathway of this reaction.
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Affiliation(s)
- Alberto Cedillo-Cruz
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, Coyoacán, C.P. 04360 México, DF México
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Ghadari R, Hajishaabanha F, Mahyari M, Shaabani A, Khavasi HR. An unexpected route toward the synthesis of spiro-benzo[b]acridine-furan derivatives. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.05.107] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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