1
|
Sharma K. Mechanistic Study on Gold(I)-Catalyzed Unsaturated Spiroketalization Reaction. LETT ORG CHEM 2022. [DOI: 10.2174/1570178619666220105151953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract:
The mechanism of metal-catalyzed spiroketalization of propargyl acetonide is explored by employing DFT with the B3LYP/6-31+G(d) method. Acetonide is used as a regioselective regulator in the formation of monounsaturated spiroketal. The energies of transition states, intermediates, reactants and products are calculated to provide new insight into the mechanism of the reaction. The energetic features, validation of the observed trends in regioselectivity are conferred in terms of electronic indices via FMO analysis. The presence of acetonide facilitates a stepwise spiroketalization as it masks the competing nucleophile, and thus hydroxyl group present, exclusively acts as a nucleophile. The vinyl gold intermediate 3 is formed from 2 via activation barrier TS1. This is the first ring formation, which is 6-exo-dig cyclization. The intermediate 3 is converted into allenyl ether 4, which isomerizes to the intermediate oxocarbenium ion 5 via activation barrier TS2. The intermediate 5 cyclizes to 6 via TS3. This is the second ring formation. The intermediate 6 on protodeauration turns into 6,6-monounsaturated spiroketal 7. It is concluded that acetonide as a protecting group serves the purpose, and thus a wide range of spiroketals can be prepared, regioselectivity.
Collapse
Affiliation(s)
- Kamlesh Sharma
- Department of Chemistry, Faculty of Sciences, Shree Guru Gobind Singh Tricentenary University, Gurugram 122505, Haryana, INDIA
| |
Collapse
|
2
|
Pérez-Guevara R, Sarandeses LA, Martínez MM, Pérez Sestelo J. Indium-catalyzed synthesis of benzannulated spiroketals by intramolecular double hydroalkoxylation of ortho-(hydroxyalkynyl)benzyl alcohols. Org Chem Front 2022. [DOI: 10.1039/d2qo01600a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The novel indium-catalyzed synthesis of benzannulated spiroketals by a double intramolecular hydroalkoxylation reaction of o-(hydroxyalkynyl)benzyl alcohols is reported.
Collapse
Affiliation(s)
- Raquel Pérez-Guevara
- CICA – Centro Interdisciplinar de Química e Bioloxía and Departamento de Química, Universidade da Coruña, E-15071 A Coruña, Spain
| | - Luis A. Sarandeses
- CICA – Centro Interdisciplinar de Química e Bioloxía and Departamento de Química, Universidade da Coruña, E-15071 A Coruña, Spain
| | - M. Montserrat Martínez
- CICA – Centro Interdisciplinar de Química e Bioloxía and Departamento de Química, Universidade da Coruña, E-15071 A Coruña, Spain
| | - José Pérez Sestelo
- CICA – Centro Interdisciplinar de Química e Bioloxía and Departamento de Química, Universidade da Coruña, E-15071 A Coruña, Spain
| |
Collapse
|
3
|
de la Cruz-Martínez F, Martínez de Sarasa Buchaca M, Fernández-Baeza J, Sánchez-Barba LF, Rodríguez AM, Castro-Osma JA, Lara-Sánchez A. Zinc-Catalyzed Hydroalkoxylation/Cyclization of Alkynyl Alcohols. Inorg Chem 2021; 60:5322-5332. [PMID: 33719419 DOI: 10.1021/acs.inorgchem.1c00309] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Despite the great interest in zinc catalysis for hydroelementation reactions, the use of zinc complexes as catalysts for the hydroalkoxylation of alkynyl alcohols has not been reported to date. Scorpionate zinc complexes have been successfully designed as precatalysts for the hydroalkoxylation reaction of alkynyl alcohols under mild reaction conditions. Zinc amide complex 8 has been shown to be an excellent precatalyst for the highly selective intramolecular hydroalkoxylation process to yield the corresponding exocyclic enol ethers. Kinetic studies have been performed and confirmed that reactions are first-order in [catalyst] and zero-order in [alkynyl alcohol]. NMR spectroscopy and X-ray diffraction analysis provided evidence for the formation of an alkynyl zinc compound which has been shown to be a key intermediate in the hydroalkoxylation process. On the basis of the experimental results, a catalytic cycle is proposed.
Collapse
Affiliation(s)
- Felipe de la Cruz-Martínez
- Universidad de Castilla-La Mancha, Departamento de Química Inorgánica, Orgánica y Bioquímica-Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Ciencias y Tecnologías Químicas, 13071-Ciudad Real, Spain
| | - Marc Martínez de Sarasa Buchaca
- Universidad de Castilla-La Mancha, Departamento de Química Inorgánica, Orgánica y Bioquímica-Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Ciencias y Tecnologías Químicas, 13071-Ciudad Real, Spain
| | - Juan Fernández-Baeza
- Universidad de Castilla-La Mancha, Departamento de Química Inorgánica, Orgánica y Bioquímica-Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Ciencias y Tecnologías Químicas, 13071-Ciudad Real, Spain
| | - Luis F Sánchez-Barba
- Universidad Rey Juan Carlos, Departamento de Biología y Geología, Física y Química Inorgánica, 28933-Móstoles, Spain
| | - Ana M Rodríguez
- Universidad de Castilla-La Mancha, Departamento de Química Inorgánica, Orgánica y Bioquímica-Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Ciencias y Tecnologías Químicas, 13071-Ciudad Real, Spain
| | - José A Castro-Osma
- Universidad de Castilla-La Mancha, Departamento de Química Inorgánica, Orgánica y Bioquímica-Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Farmacia, 02071-Albacete, Spain
| | - Agustín Lara-Sánchez
- Universidad de Castilla-La Mancha, Departamento de Química Inorgánica, Orgánica y Bioquímica-Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Ciencias y Tecnologías Químicas, 13071-Ciudad Real, Spain
| |
Collapse
|
4
|
Wang D, Malmberg R, Pernik I, Prasad SKK, Roemer M, Venkatesan K, Schmidt TW, Keaveney ST, Messerle BA. Development of tethered dual catalysts: synergy between photo- and transition metal catalysts for enhanced catalysis. Chem Sci 2020; 11:6256-6267. [PMID: 32953021 PMCID: PMC7480183 DOI: 10.1039/d0sc02703k] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Accepted: 06/03/2020] [Indexed: 11/21/2022] Open
Abstract
While dual photocatalysis-transition metal catalysis strategies are extensively reported, the majority of systems feature two separate catalysts, limiting the potential for synergistic interactions between the catalytic centres. In this work we synthesised a series of tethered dual catalysts allowing us to investigate this underexplored area of dual catalysis. In particular, Ir(i) or Ir(iii) complexes were tethered to a BODIPY photocatalyst through different tethering modes. Extensive characterisation, including transient absorption spectroscopy, cyclic voltammetry and X-ray absorption spectroscopy, suggest that there are synergistic interactions between the catalysts. The tethered dual catalysts were more effective at promoting photocatalytic oxidation and Ir-catalysed dihydroalkoxylation, relative to the un-tethered species, highlighting that increases in both photocatalysis and Ir catalysis can be achieved. The potential of these catalysts was further demonstrated through novel sequential reactivity, and through switchable reactivity that is controlled by external stimuli (heat or light).
Collapse
Affiliation(s)
- Danfeng Wang
- Department of Molecular Sciences , Macquarie University , North Ryde , NSW 2109 , Australia . ;
| | - Robert Malmberg
- Department of Molecular Sciences , Macquarie University , North Ryde , NSW 2109 , Australia . ;
| | - Indrek Pernik
- Department of Molecular Sciences , Macquarie University , North Ryde , NSW 2109 , Australia . ;
| | - Shyamal K K Prasad
- ARC Centre of Excellence in Exciton Science , School of Chemistry , University of New South Wales , Kensington , NSW 2052 , Australia
| | - Max Roemer
- Department of Molecular Sciences , Macquarie University , North Ryde , NSW 2109 , Australia . ;
| | - Koushik Venkatesan
- Department of Molecular Sciences , Macquarie University , North Ryde , NSW 2109 , Australia . ;
| | - Timothy W Schmidt
- ARC Centre of Excellence in Exciton Science , School of Chemistry , University of New South Wales , Kensington , NSW 2052 , Australia
| | - Sinead T Keaveney
- Department of Molecular Sciences , Macquarie University , North Ryde , NSW 2109 , Australia . ;
| | - Barbara A Messerle
- Department of Molecular Sciences , Macquarie University , North Ryde , NSW 2109 , Australia . ;
| |
Collapse
|
5
|
Xiong N, Zhang G, Sun X, Zeng R. Metal‐Metal Cooperation in Dinucleating Complexes Involving Late Transition Metals Directed towards Organic Catalysis. CHINESE J CHEM 2020. [DOI: 10.1002/cjoc.201900371] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Ni Xiong
- Department of ChemistrySchool of Science, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University Xi'an Shaanxi 710049 China
| | - Guoxiang Zhang
- Department of ChemistrySchool of Science, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University Xi'an Shaanxi 710049 China
| | - Xiaolong Sun
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and TechnologyXi'an Jiaotong University Xi'an Shaanxi 710049 China
| | - Rong Zeng
- Department of ChemistrySchool of Science, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University Xi'an Shaanxi 710049 China
| |
Collapse
|
6
|
Visbal R, Herrera RP, Gimeno MC. Thiolate Bridged Gold(I)–NHC Catalysts: New Approach for Catalyst Design and its Application to Trapping Catalytic Intermediates. Chemistry 2019; 25:15837-15845. [DOI: 10.1002/chem.201903494] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 09/16/2019] [Indexed: 11/08/2022]
Affiliation(s)
- Renso Visbal
- Departamento de Química InorgánicaInstituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza C/ Pedro Cerbuna 12 50009 Zaragoza Spain
- Departamento de QuímicaFacultad de Ciencias Naturales y Exactas, Universidad del Valle, A.A. 25360 Cali Colombia
| | - Raquel P. Herrera
- Departamento de Química Orgánica, Laboratorio de Organocatálisis AsimétricaInstituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza C/ Pedro Cerbuna 12 50009 Zaragoza Spain
| | - M. Concepción Gimeno
- Departamento de Química InorgánicaInstituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza C/ Pedro Cerbuna 12 50009 Zaragoza Spain
| |
Collapse
|
7
|
Gatus MRD, Pernik I, Tompsett JA, Binding SC, Peterson MB, Messerle BA. Simple and reactive Ir(i) N-heterocyclic carbene complexes for alkyne activation. Dalton Trans 2019; 48:4333-4340. [PMID: 30860538 DOI: 10.1039/c9dt00313d] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Two simple unsymmetrical monometallic Ir(i) complexes with an N-heterocyclic carbene ligand and an analogous bimetallic Ir(i) complex were synthesised. These complexes were found to be extremely active catalysts for a range of C-X (X = N or O) and Si-N bond forming reactions involving alkyne and imine activation for dihydroalkoxylation, hydroamination and hydrosilylation reactions. These catalysts exhibited reaction rates far exceeding those of other Rh(i) and Ir(i) complexes previously reported. In addition, a small change to the ligand design (phenyl vs. mesityl) substantially affected both the reactivity and product selectivity of the catalyst. The Ir(i) complex bearing a mesitylene wingtip provided unprecedented regioselectivity in the dihydroalkoxylation reaction and a new kinetic product from the typical hydrosilylation protocol of 2-benyzlpyrroline to produce an N-silylaminoalkene. Our mechanistic studies indicated that this transformation proceeded via a dehydrogenative coupling mechanism.
Collapse
Affiliation(s)
- Mark R D Gatus
- Department of Molecular Sciences, Macquarie University, North Ryde, NSW 2109, Australia.
| | | | | | | | | | | |
Collapse
|
8
|
Shibuya M, Okamoto M, Fujita S, Abe M, Yamamoto Y. Boron-Catalyzed Double Hydrofunctionalization Reactions of Unactivated Alkynes. ACS Catal 2018. [DOI: 10.1021/acscatal.8b00955] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Masatoshi Shibuya
- Department of Basic Medicinal Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8601, Japan
| | - Masaki Okamoto
- Department of Basic Medicinal Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8601, Japan
| | - Shoji Fujita
- Department of Basic Medicinal Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8601, Japan
| | - Masanori Abe
- Department of Basic Medicinal Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8601, Japan
| | - Yoshihiko Yamamoto
- Department of Basic Medicinal Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8601, Japan
| |
Collapse
|
9
|
Nair AG, McBurney RT, Gatus MRD, Binding SC, Messerle BA. Gold(III) NHC Complexes for Catalyzing Dihydroalkoxylation and Hydroamination Reactions. Inorg Chem 2017; 56:12067-12075. [PMID: 28933838 DOI: 10.1021/acs.inorgchem.7b02161] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A gold(III) complex of an N-heterocyclic carbene based hemilabile ligand with two pendant pyrazole arms (1,3-bis((1H-pyrazol-3-yl)methyl)-2,3-dihydro-1H-imidazole, LH) was synthesized. Complex [LAu(III)Cl3] is an excellent catalyst for promoting dihydroalkoxylation at room temperature, even catalyzing this reaction at 0 °C. [LAu(III)Cl3] is one of the most efficient catalysts reported to date for the spirocyclization of alkynyl diols. Furthermore, [LAu(III)Cl3] catalyzed intra- and intermolecular hydroamination reactions, achieving good to excellent conversions. [LAu(III)Cl3] is a more efficient catalyst than a gold(I) analogue, [LAu(I)Cl]. The dependence of the quantity of weakly coordinating anion [BArF4]- ((3,5-trifluoromethyl)phenyl borate) present on catalysis efficiency was probed for the dihydroalkoxylation reaction. X-ray diffraction analysis of single crystals demonstrated the solid-state structure of gold complexes [LAu(III)Cl3] and [LAu(I)Cl], which displayed the expected square-planar and linear coordination geometries, respectively.
Collapse
Affiliation(s)
- Ashwin G Nair
- Department of Chemistry and Biomolecular Sciences, Macquarie University , Sydney 2109, Australia
| | - Roy T McBurney
- Department of Chemistry and Biomolecular Sciences, Macquarie University , Sydney 2109, Australia
| | - Mark R D Gatus
- Department of Chemistry and Biomolecular Sciences, Macquarie University , Sydney 2109, Australia
| | - Samantha C Binding
- Department of Chemistry and Biomolecular Sciences, Macquarie University , Sydney 2109, Australia
| | - Barbara A Messerle
- Department of Chemistry and Biomolecular Sciences, Macquarie University , Sydney 2109, Australia
| |
Collapse
|
10
|
Gatus MRD, McBurney RT, Bhadbhade M, Messerle BA. Enhancements in catalytic reactivity and selectivity of homobimetallic complexes containing heteroditopic ligands. Dalton Trans 2017; 46:7457-7466. [PMID: 28561096 DOI: 10.1039/c7dt01294b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Rh(i) and Ir(i) homobimetallic complexes were synthesised using a heteroditopic ligand system on a xanthene scaffold containing a monodentate N-heterocyclic carbene ligand and a bidentate bis(pyrazol-1-yl)methane ligand. The complexes were tested as catalysts for the two-step dihydroalkoxylation and two-step hydroamination/hydrosilylation reactions. This is the first known report of an organometallic group 9 complex, Ir(i) bimetallic complex, 13, to selectively favour the opposite spirocyclisation product from that reported in the literature, 14cvs.14b. The Ir(i) homobimetallic complex catalyses the intramolecular hydroamination reaction of alkynamines efficiently and proved to be a highly active catalyst for promoting the subsequent hydrosilylation of the pyrrolines; completing the hydrosilylation reactions in less than 40 seconds. A chloro-bridged bimetallic species was observed in the solid state, revealing that the COD co-ligands present underwent an oxidation.
Collapse
Affiliation(s)
- Mark R D Gatus
- School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia
| | | | | | | |
Collapse
|
11
|
Wang L, Li X, Tao H, Zhou X, Lu X, Du W, Jiang T, Xin Z, Liang J. Palladium-catalyzed intermolecular tandem cyclization reaction: a highly regioselective synthesis of functionalized 3H-spiro[isobenzofuran-1,3'-isochroman] scaffolds. Org Biomol Chem 2017; 15:2403-2410. [PMID: 28252150 DOI: 10.1039/c6ob02802k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly regioselective synthesis of functionalized 3H-spiro[isobenzofuran-1,3'-isochroman] scaffolds using a novel palladium-catalyzed tandem cyclization reaction is explored. During the reaction process, C-O, C-C and C-O bonds are sequentially formed in one pot via decarboxylative allenylpalladium formation, nucleophilic attack, arylpalladium addition and intramolecular nucleophilic attack.
Collapse
Affiliation(s)
- Liang Wang
- Institute of Modern Physics, Chinese Academy of Sciences, 509 Nanchang Rd, Lanzhou, Gansu 730000, P. R. China.
| | | | | | | | | | | | | | | | | |
Collapse
|
12
|
Arcau J, Ferrer M, Aguiló E, Rodríguez L. Rhodium(I) macrocyclic and cage-like structures containing diphosphine bridging ligands. TRANSIT METAL CHEM 2016. [DOI: 10.1007/s11243-016-0107-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
13
|
Pettinari C, Pettinari R, Marchetti F. Golden Jubilee for Scorpionates. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2016. [DOI: 10.1016/bs.adomc.2016.01.002] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
14
|
Diachenko V, Page MJ, Gatus MRD, Bhadbhade M, Messerle BA. Bimetallic N-Heterocyclic Carbene Rh(I) Complexes: Probing the Cooperative Effect for the Catalyzed Hydroelementation of Alkynes. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00594] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Vera Diachenko
- School of Chemistry and ‡Mark
Wainwright Analytical
Centre, University of New South Wales, Sydney, Kensington, New
South Wales 2051, Australia
| | - Michael J. Page
- School of Chemistry and ‡Mark
Wainwright Analytical
Centre, University of New South Wales, Sydney, Kensington, New
South Wales 2051, Australia
| | - Mark R. D. Gatus
- School of Chemistry and ‡Mark
Wainwright Analytical
Centre, University of New South Wales, Sydney, Kensington, New
South Wales 2051, Australia
| | - Mohan Bhadbhade
- School of Chemistry and ‡Mark
Wainwright Analytical
Centre, University of New South Wales, Sydney, Kensington, New
South Wales 2051, Australia
| | - Barbara A. Messerle
- School of Chemistry and ‡Mark
Wainwright Analytical
Centre, University of New South Wales, Sydney, Kensington, New
South Wales 2051, Australia
| |
Collapse
|
15
|
Lam RH, Walker DB, Tucker MH, Gatus MRD, Bhadbhade M, Messerle BA. Intermolecular Hydroalkoxylation of Terminal Alkynes Catalyzed by a Dipyrrinato Rhodium(I) Complex with Unusual Selectivity. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00561] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Raphael H. Lam
- School
of Chemistry, The University of New South Wales, Sydney 2052, Australia
- Department
of Chemistry and Biomolecular Sciences, Macquarie University, North Ryde, 2109, Australia
| | - D. Barney Walker
- School
of Chemistry, The University of New South Wales, Sydney 2052, Australia
- Department
of Chemistry and Biomolecular Sciences, Macquarie University, North Ryde, 2109, Australia
| | - Matthew H. Tucker
- School
of Chemistry, The University of New South Wales, Sydney 2052, Australia
| | - Mark R. D. Gatus
- School
of Chemistry, The University of New South Wales, Sydney 2052, Australia
- Department
of Chemistry and Biomolecular Sciences, Macquarie University, North Ryde, 2109, Australia
| | - Mohan Bhadbhade
- Mark
Wainwright Analytical Centre, The University of New South Wales, Sydney 2052, Australia
| | - Barbara A. Messerle
- School
of Chemistry, The University of New South Wales, Sydney 2052, Australia
- Department
of Chemistry and Biomolecular Sciences, Macquarie University, North Ryde, 2109, Australia
| |
Collapse
|
16
|
Tregubov AA, Walker DB, Vuong KQ, Gooding JJ, Messerle BA. The advantages of covalently attaching organometallic catalysts to a carbon black support: recyclable Rh(i) complexes that deliver enhanced conversion and product selectivity. Dalton Trans 2015; 44:7917-26. [DOI: 10.1039/c5dt00409h] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A bidentate Rh(i) coordination complex was covalently anchored to a carbon black support. The resultant hybrid catalyst was found to be active for both hydroamination and dihydroalkoxylation reactions and was readily recycled.
Collapse
Affiliation(s)
- Andrey A. Tregubov
- School of Chemistry
- The University of New South Wales
- Sydney 2052
- Australia
| | - D. Barney Walker
- School of Chemistry
- The University of New South Wales
- Sydney 2052
- Australia
| | - Khuong Q. Vuong
- School of Chemistry
- The University of New South Wales
- Sydney 2052
- Australia
- Institute of Chemical and Engineering Sciences
| | - J. Justin Gooding
- School of Chemistry
- The University of New South Wales
- Sydney 2052
- Australia
| | | |
Collapse
|
17
|
Goodwin JA, Aponick A. Regioselectivity in the Au-catalyzed hydration and hydroalkoxylation of alkynes. Chem Commun (Camb) 2015; 51:8730-41. [DOI: 10.1039/c5cc00120j] [Citation(s) in RCA: 130] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The issue of regioselectivity in the Au-catalyzed hydration and hydroalkoxylation of alkynes is a perpetual challenge that essentially remains an unsolved problem with respect to general solutions.
Collapse
Affiliation(s)
- Justin A. Goodwin
- Department of Chemistry
- Center for Heterocyclic Compounds
- University of Florida
- Gainesville
- USA
| | - Aaron Aponick
- Department of Chemistry
- Center for Heterocyclic Compounds
- University of Florida
- Gainesville
- USA
| |
Collapse
|
18
|
|
19
|
Belger K, Krause N. Ammonium-Salt-Tagged IMesAuCl Complexes and Their Application in Gold-Catalyzed Cycloisomerization Reactions in Water. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403153] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
|
20
|
Paioti PHS, Ketcham JM, Aponick A. Controlling Regiochemistry in the Gold-Catalyzed Synthesis of Unsaturated Spiroketals. Org Lett 2014; 16:5320-3. [DOI: 10.1021/ol5024954] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Paulo H. S. Paioti
- Department
of Chemistry,
Center for Heterocyclic Compounds, University of Florida, Gainesville, Florida 32611, United States
| | - John M. Ketcham
- Department
of Chemistry,
Center for Heterocyclic Compounds, University of Florida, Gainesville, Florida 32611, United States
| | - Aaron Aponick
- Department
of Chemistry,
Center for Heterocyclic Compounds, University of Florida, Gainesville, Florida 32611, United States
| |
Collapse
|
21
|
Luan Y, Wei H, Zhang Z, Che Q, Liu Y, Zhu T, Mándi A, Kurtán T, Gu Q, Li D. Eleganketal A, a highly oxygenated dibenzospiroketal from the marine-derived fungus Spicaria elegans KLA03. JOURNAL OF NATURAL PRODUCTS 2014; 77:1718-1723. [PMID: 24967847 DOI: 10.1021/np500458a] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Eleganketal A (1), a naturally occurring aromatic polyketide possessing a rare highly oxygenated spiro[isobenzofuran-1,3'-isochroman] ring system, was isolated from the fungus Spicaria elegans KLA03 by culturing it in a modified mannitol-based medium. The structure of 1 including the absolute configuration was determined by combining spectroscopic analysis, synthesis of the racemic permethylated analogue, chiral-phase HPLC separation, and TDDFT-ECD analysis.
Collapse
Affiliation(s)
- Yepeng Luan
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China , Qingdao 266003, People's Republic of China
| | | | | | | | | | | | | | | | | | | |
Collapse
|
22
|
Vuong KQ, Wong CM, Bhadbhade M, Messerle BA. Bi- and tri-metallic Rh and Ir complexes containing click derived bis- and tris-(pyrazolyl-1,2,3-triazolyl) N-N' donor ligands and their application as catalysts for the dihydroalkoxylation of alkynes. Dalton Trans 2014; 43:7540-53. [PMID: 24699761 DOI: 10.1039/c3dt53295j] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of bi-topic and tri-topic pyrazolyl-1,2,3-triazolyl donor ligands (; = 1,X-bis((4-((1H-pyrazol-1-yl)methyl)-1H-1,2,3-triazol-1-yl)methyl)benzene (X = 2, 3 and 4; o-C6H4(PyT)2, m-C6H4(PyT)2 and p-C6H4(PyT)2) and = 1,3,5-tris((4-((1H-pyrazol-1-yl)methyl)-1H-1,2,3-triazol-1-yl)methyl)benzene, 1,3,5-C6H3(PyT)3) were conveniently synthesised in 'one pot' reactions using the Cu(i) catalysed 'click' reaction. Rh(i), Ir(i), Rh(iii) and Ir(iii) complexes with ligands of the general formulae C6H6-n[(PyT)M(CO)2]n[BAr]n (M = Rh, Ir; n = 2, 3; ; ) and C6H6-n[(PyT)MCp*Cl]n[BAr]n (M = Rh, Ir; n = 2, 3; ; ) were synthesised and fully characterised. In solution each of the bi- or tri-metallic complexes and exists as a mixture of two (, ) or three ( and ) diastereomers due to the presence of a chiral centre at each metal centre in these complexes. The solid state structures of complexes and were determined by single crystal X-ray crystallography and showed that each bidentate arm of these multitopic ligands coordinates to the Rh or Ir centre in a bidentate fashion via the pyrazolyl-N2 and 1,2,3-triazolyl N3' donors. The intermetallic distances in these solid state structures vary from 8.66 Å to 15.17 Å. These complexes were assessed as catalysts for the dihydroalkoxylation of alkynes using the cyclisation of 2-(5-hydroxypent-1-ynyl)benzyl alcohol, , to a mixture of two spiroketals, 2,3,4,5-tetrahydro-spirol[furan-2,3'-isochroman], , and 3',4',5',6'-tetrahydro-spiro[isobenzofuran-1(3H),2'(2H)pyran], , as the model reaction. The Rh(i) complexes (), with the highest TOF of 2052 h(-1) for complex , were the most active catalysts when compared with the other complexes under investigation here. The Ir(i) complexes () were moderately active as catalysts for the same transformation. No significant enhancement in catalytic reactivity was observed with the Rh(i) series bi- and trimetallic complexes () when compared with their monometallic analogues. The bi- and trimetallic Ir(i) complexes () were much more efficient as catalysts for this transformation than their monometallic analogues, suggesting some intermetallic cooperativity. Rh(iii), , and Ir(iii), , complexes were not active as catalysts for this transformation.
Collapse
Affiliation(s)
- Khuong Q Vuong
- School of Chemistry, The University of New South Wales, Kensington, NSW 2052, Australia
| | | | | | | |
Collapse
|
23
|
Saha S, Sarbajna A, Bera JK. Bulky, spherical, and fluorinated anion BArF induces ‘on-water’ activity of silver salt for the hydration of terminal alkynes. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.01.045] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
|
24
|
Synthesis of 5,6- and 6,6-Spirocyclic Compounds. SYNTHESIS OF SATURATED OXYGENATED HETEROCYCLES I 2014. [DOI: 10.1007/978-3-642-41473-2_5] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
25
|
Wang X, Guo P, Wang X, Wang Z, Ding K. Practical Asymmetric Catalytic Synthesis of Spiroketals and Chiral Diphosphine Ligands. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300380] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
26
|
Timerbulatova MG, Gatus MRD, Vuong KQ, Bhadbhade M, Algarra AG, Macgregor SA, Messerle BA. Bimetallic Complexes for Enhancing Catalyst Efficiency: Probing the Relationship between Activity and Intermetallic Distance. Organometallics 2013. [DOI: 10.1021/om4005059] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Marina G. Timerbulatova
- School of Chemistry, University of New South Wales, Kensington, New South Wales 2052, Australia
| | - Mark R. D. Gatus
- School of Chemistry, University of New South Wales, Kensington, New South Wales 2052, Australia
| | - Khuong Q. Vuong
- School of Chemistry, University of New South Wales, Kensington, New South Wales 2052, Australia
| | - Mohan Bhadbhade
- Mark Wainwright Analytical Centre, University of New South Wales, Kensington, New South Wales 2052, Australia
| | - Andrés G. Algarra
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, U.K
| | - Stuart A. Macgregor
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, U.K
| | - Barbara A. Messerle
- School of Chemistry, University of New South Wales, Kensington, New South Wales 2052, Australia
| |
Collapse
|
27
|
|
28
|
Choy SWS, Page MJ, Bhadbhade M, Messerle BA. Cooperative Catalysis: Large Rate Enhancements with Bimetallic Rhodium Complexes. Organometallics 2013. [DOI: 10.1021/om400613b] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Sandra W. S. Choy
- School of Chemistry, University of New South Wales, Sydney, Australia 2052
| | - Michael J. Page
- School of Chemistry, University of New South Wales, Sydney, Australia 2052
| | - Mohan Bhadbhade
- School of Chemistry, University of New South Wales, Sydney, Australia 2052
| | | |
Collapse
|
29
|
Abstract
Versatile and chemoselective preparation of substituted oxygenated heterocycles is described. Highly diastereoselective metal-catalyzed syntheses of trans-2,6- and cis-2,6-disubstituted tetrahydropyrans (THPs) are presented, along with an easy one-pot access to various ring size benzoannulated spiroketals.
Collapse
|
30
|
Vuong KQ, Timerbulatova MG, Peterson MB, Bhadbhade M, Messerle BA. Cationic Rh and Ir complexes containing bidentate imidazolylidene–1,2,3-triazole donor ligands: synthesis and preliminary catalytic studies. Dalton Trans 2013; 42:14298-308. [DOI: 10.1039/c3dt51440d] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
31
|
Wobser SD, Marks TJ. Organothorium-Catalyzed Hydroalkoxylation/Cyclization of Alkynyl Alcohols. Scope, Mechanism, and Ancillary Ligand Effects. Organometallics 2012. [DOI: 10.1021/om300881b] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Stephen D. Wobser
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208-3113,
United States
| | - Tobin J. Marks
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208-3113,
United States
| |
Collapse
|
32
|
Wong CM, Vuong KQ, Gatus MRD, Hua C, Bhadbhade M, Messerle BA. Catalyzed Tandem C–N/C–C Bond Formation for the Synthesis of Tricyclic Indoles using Ir(III) Pyrazolyl-1,2,3-Triazolyl Complexes. Organometallics 2012. [DOI: 10.1021/om300792b] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chin Min Wong
- School of
Chemistry and ‡X-ray Diffraction Laboratory, Mark Wainwright Analytical Centre, The University of New South Wales, Kensington,
New South Wales 2052, Australia
| | - Khuong Q. Vuong
- School of
Chemistry and ‡X-ray Diffraction Laboratory, Mark Wainwright Analytical Centre, The University of New South Wales, Kensington,
New South Wales 2052, Australia
| | - Mark R. D. Gatus
- School of
Chemistry and ‡X-ray Diffraction Laboratory, Mark Wainwright Analytical Centre, The University of New South Wales, Kensington,
New South Wales 2052, Australia
| | - Carol Hua
- School of
Chemistry and ‡X-ray Diffraction Laboratory, Mark Wainwright Analytical Centre, The University of New South Wales, Kensington,
New South Wales 2052, Australia
| | - Mohan Bhadbhade
- School of
Chemistry and ‡X-ray Diffraction Laboratory, Mark Wainwright Analytical Centre, The University of New South Wales, Kensington,
New South Wales 2052, Australia
| | - Barbara A. Messerle
- School of
Chemistry and ‡X-ray Diffraction Laboratory, Mark Wainwright Analytical Centre, The University of New South Wales, Kensington,
New South Wales 2052, Australia
| |
Collapse
|
33
|
Butkevich AN, Corbu A, Meerpoel L, Stansfield I, Angibaud P, Bonnet P, Cossy J. Two-Step One-Pot Synthesis of Benzoannulated Spiroacetals by Suzuki–Miyaura Coupling/Acid-Catalyzed Spiroacetalization. Org Lett 2012; 14:4998-5001. [DOI: 10.1021/ol302088w] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Alexey N. Butkevich
- Laboratoire de Chimie Organique, ESPCI ParisTech, CNRS, 10 rue Vauquelin, 75231 Paris Cedex 05, France, Janssen Research & Development, Division of Janssen-Cilag S.A., Oncology and Medicinal Chemistry, Campus de Maigremont, 27106 Val de Reuil, Cedex, France, and Janssen Research & Development, Division of Janssen Pharmaceutica N.V., Turnhoutsweg 30, 2340 Beerse, Belgium
| | - Andrei Corbu
- Laboratoire de Chimie Organique, ESPCI ParisTech, CNRS, 10 rue Vauquelin, 75231 Paris Cedex 05, France, Janssen Research & Development, Division of Janssen-Cilag S.A., Oncology and Medicinal Chemistry, Campus de Maigremont, 27106 Val de Reuil, Cedex, France, and Janssen Research & Development, Division of Janssen Pharmaceutica N.V., Turnhoutsweg 30, 2340 Beerse, Belgium
| | - Lieven Meerpoel
- Laboratoire de Chimie Organique, ESPCI ParisTech, CNRS, 10 rue Vauquelin, 75231 Paris Cedex 05, France, Janssen Research & Development, Division of Janssen-Cilag S.A., Oncology and Medicinal Chemistry, Campus de Maigremont, 27106 Val de Reuil, Cedex, France, and Janssen Research & Development, Division of Janssen Pharmaceutica N.V., Turnhoutsweg 30, 2340 Beerse, Belgium
| | - Ian Stansfield
- Laboratoire de Chimie Organique, ESPCI ParisTech, CNRS, 10 rue Vauquelin, 75231 Paris Cedex 05, France, Janssen Research & Development, Division of Janssen-Cilag S.A., Oncology and Medicinal Chemistry, Campus de Maigremont, 27106 Val de Reuil, Cedex, France, and Janssen Research & Development, Division of Janssen Pharmaceutica N.V., Turnhoutsweg 30, 2340 Beerse, Belgium
| | - Patrick Angibaud
- Laboratoire de Chimie Organique, ESPCI ParisTech, CNRS, 10 rue Vauquelin, 75231 Paris Cedex 05, France, Janssen Research & Development, Division of Janssen-Cilag S.A., Oncology and Medicinal Chemistry, Campus de Maigremont, 27106 Val de Reuil, Cedex, France, and Janssen Research & Development, Division of Janssen Pharmaceutica N.V., Turnhoutsweg 30, 2340 Beerse, Belgium
| | - Pascal Bonnet
- Laboratoire de Chimie Organique, ESPCI ParisTech, CNRS, 10 rue Vauquelin, 75231 Paris Cedex 05, France, Janssen Research & Development, Division of Janssen-Cilag S.A., Oncology and Medicinal Chemistry, Campus de Maigremont, 27106 Val de Reuil, Cedex, France, and Janssen Research & Development, Division of Janssen Pharmaceutica N.V., Turnhoutsweg 30, 2340 Beerse, Belgium
| | - Janine Cossy
- Laboratoire de Chimie Organique, ESPCI ParisTech, CNRS, 10 rue Vauquelin, 75231 Paris Cedex 05, France, Janssen Research & Development, Division of Janssen-Cilag S.A., Oncology and Medicinal Chemistry, Campus de Maigremont, 27106 Val de Reuil, Cedex, France, and Janssen Research & Development, Division of Janssen Pharmaceutica N.V., Turnhoutsweg 30, 2340 Beerse, Belgium
| |
Collapse
|
34
|
Pouy MJ, Delp SA, Uddin J, Ramdeen VM, Cochrane NA, Fortman GC, Gunnoe TB, Cundari TR, Sabat M, Myers WH. Intramolecular Hydroalkoxylation and Hydroamination of Alkynes Catalyzed by Cu(I) Complexes Supported by N-Heterocyclic Carbene Ligands. ACS Catal 2012. [DOI: 10.1021/cs300544w] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mark J. Pouy
- Department of Chemistry,
University
of Virginia, Charlottesville, Virginia 22904, United States
| | - Samuel A. Delp
- Department of Chemistry,
University
of Virginia, Charlottesville, Virginia 22904, United States
| | - Jamal Uddin
- Center for Advanced Scientific
Computing and Modeling (CASCaM), Department of Chemistry, University
of North Texas, Box 305070, Denton, Texas 76203-5070, United States
| | - Vijay M. Ramdeen
- Department of Chemistry,
University
of Virginia, Charlottesville, Virginia 22904, United States
| | - Nikki A. Cochrane
- Department of Chemistry,
University
of Virginia, Charlottesville, Virginia 22904, United States
| | - George C. Fortman
- Department of Chemistry,
University
of Virginia, Charlottesville, Virginia 22904, United States
| | - T. Brent Gunnoe
- Department of Chemistry,
University
of Virginia, Charlottesville, Virginia 22904, United States
| | - Thomas R. Cundari
- Center for Advanced Scientific
Computing and Modeling (CASCaM), Department of Chemistry, University
of North Texas, Box 305070, Denton, Texas 76203-5070, United States
| | - Michal Sabat
- Department of Chemistry,
University
of Virginia, Charlottesville, Virginia 22904, United States
| | - William H. Myers
- Department of Chemistry, University
of Richmond, Richmond, Virginia 23173, United States
| |
Collapse
|
35
|
Hua C, Vuong KQ, Bhadbhade M, Messerle BA. New Rhodium(I) and Iridium(I) Complexes Containing Mixed Pyrazolyl–1,2,3-Triazolyl Ligands As Catalysts for Hydroamination. Organometallics 2012. [DOI: 10.1021/om201171b] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Carol Hua
- School
of Chemistry and ‡Mark Wainwright Analytical Centre, The University of New South Wales, Kensington, NSW 2052,
Australia
| | - Khuong Q. Vuong
- School
of Chemistry and ‡Mark Wainwright Analytical Centre, The University of New South Wales, Kensington, NSW 2052,
Australia
| | - Mohan Bhadbhade
- School
of Chemistry and ‡Mark Wainwright Analytical Centre, The University of New South Wales, Kensington, NSW 2052,
Australia
| | - Barbara A. Messerle
- School
of Chemistry and ‡Mark Wainwright Analytical Centre, The University of New South Wales, Kensington, NSW 2052,
Australia
| |
Collapse
|
36
|
Wang X, Han Z, Wang Z, Ding K. Catalytic Asymmetric Synthesis of Aromatic Spiroketals by SpinPhox/Iridium(I)-Catalyzed Hydrogenation and Spiroketalization of α,α′-Bis(2-hydroxyarylidene) Ketones. Angew Chem Int Ed Engl 2011; 51:936-40. [DOI: 10.1002/anie.201106488] [Citation(s) in RCA: 208] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2011] [Indexed: 11/06/2022]
|
37
|
Wang X, Han Z, Wang Z, Ding K. Catalytic Asymmetric Synthesis of Aromatic Spiroketals by SpinPhox/Iridium(I)-Catalyzed Hydrogenation and Spiroketalization of α,α′-Bis(2-hydroxyarylidene) Ketones. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201106488] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
38
|
Ho JHH, Choy SWS, Macgregor SA, Messerle BA. Cooperativity in Bimetallic Dihydroalkoxylation Catalysts Built on Aromatic Scaffolds: Significant Rate Enhancements with a Rigid Anthracene Scaffold. Organometallics 2011. [DOI: 10.1021/om2007826] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Joanne H. H. Ho
- School of Chemistry, University of New South Wales, Kensington, NSW, 2052
Australia
| | - Sandra W. S. Choy
- School of Chemistry, University of New South Wales, Kensington, NSW, 2052
Australia
| | - Stuart A. Macgregor
- School of Engineering
and Physical
Sciences, Heriot-Watt University, Edinburgh,
EH14 4AS, U.K
| | - Barbara A. Messerle
- School of Chemistry, University of New South Wales, Kensington, NSW, 2052
Australia
| |
Collapse
|
39
|
Benedetti E, Simonneau A, Hours A, Amouri H, Penoni A, Palmisano G, Malacria M, Goddard JP, Fensterbank L. (Pentamethylcyclopentadienyl)Iridium Dichloride Dimer {[IrCp*Cl2]2}: A Novel Efficient Catalyst for the Cycloisomerizations of Homopropargylic Diols and N-Tethered Enynes. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201100124] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
40
|
Fjermestad T, Ho JHH, Macgregor SA, Messerle BA, Tuna D. Computational Study of the Mechanism of Cyclic Acetal Formation via the Iridium(I)-Catalyzed Double Hydroalkoxylation of 4-Pentyn-1-ol with Methanol. Organometallics 2011. [DOI: 10.1021/om1009582] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Torstein Fjermestad
- School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, Scotland, U.K
| | - Joanne H. H. Ho
- School of Chemistry, The University of New South Wales, Sydney, Australia
| | - Stuart A. Macgregor
- School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, Scotland, U.K
| | | | - Deniz Tuna
- School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, Scotland, U.K
| |
Collapse
|
41
|
Abbiati G, Beccalli EM, Rossi E. Groups 9 and 10 Metals-Catalyzed O–H Bond Addition to Unsaturated Molecules. TOP ORGANOMETAL CHEM 2011. [DOI: 10.1007/3418_2011_18] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
|
42
|
Ho JHH, Wagler J, Willis AC, Messerle BA. Synthesis and structures of homo- and heterobimetallic rhodium(i) and/or iridium(i) complexes of binucleating bis(1-pyrazolyl)methane ligands. Dalton Trans 2011; 40:11031-42. [DOI: 10.1039/c1dt10499c] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
43
|
Man BYW, Bhadbhade M, Messerle BA. Rhodium(i) complexes bearing N-donor ligands: catalytic activity towards intramolecular cyclization of alkynoic acids and ligand lability. NEW J CHEM 2011. [DOI: 10.1039/c1nj20094a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|