1
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Theoretical study on the mechanism of the carbonylation cyclization of 1,5-diynes with hydrosilanes. J Organomet Chem 2022. [DOI: 10.1016/j.jorganchem.2022.122481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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2
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Abstract
This review highlights the hydroelementation reactions of conjugated and separated diynes, which depending on the process conditions, catalytic system, as well as the type of reagents, leads to the formation of various products: enynes, dienes, allenes, polymers, or cyclic compounds. The presence of two triple bonds in the diyne structure makes these compounds important reagents but selective product formation is often difficult owing to problems associated with maintaining appropriate reaction regio- and stereoselectivity. Herein we review this topic to gain knowledge on the reactivity of diynes and to systematise the range of information relating to their use in hydroelementation reactions. The review is divided according to the addition of the E-H (E = Mg, B, Al, Si, Ge, Sn, N, P, O, S, Se, Te) bond to the triple bond(s) in the diyne, as well as to the type of the reagent used, and the product formed. Not only are the hydroelementation reactions comprehensively discussed, but the synthetic potential of the obtained products is also presented. The majority of published research is included within this review, illustrating the potential as well as limitations of these processes, with the intent to showcase the power of these transformations and the obtained products in synthesis and materials chemistry.
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Affiliation(s)
- Jędrzej Walkowiak
- Adam Mickiewicz University in Poznan, Center for Advanced Technology, Uniwersytetu Poznanskiego 10, 61-614, Poznan.
| | - Jakub Szyling
- Adam Mickiewicz University in Poznan, Center for Advanced Technology, Uniwersytetu Poznanskiego 10, 61-614, Poznan. .,Adam Mickiewicz University in Poznan, Faculty of Chemistry, Uniwersytetu Poznanskiego 8, 61-614, Poznan, Poland
| | - Adrian Franczyk
- Adam Mickiewicz University in Poznan, Center for Advanced Technology, Uniwersytetu Poznanskiego 10, 61-614, Poznan.
| | - Rebecca L Melen
- Cardiff Catalysis Institute, Cardiff University, School of Chemistry, Park Place, Main Building, Cardiff CF10 3AT, Cymru/Wales, UK.
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3
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Gupta S, Su S, Zhang Y, Liu P, Wink DJ, Lee D. Ruthenabenzene: A Robust Precatalyst. J Am Chem Soc 2021; 143:7490-7500. [PMID: 33961744 DOI: 10.1021/jacs.1c02237] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Metallaaromatics constitute a unique class of aromatic compounds where one or more transition metal elements are incorporated into the aromatic system, the parent of which is metallabenzene. One of the main concerns about metallabenzenes generally deals with the structural characterization related to their relative aromaticity compared to the carbon archetype. Transition metal-containing metallabenzenes are also implicated in certain catalytic processes such as alkyne metathesis polymerization; however, these transition metal-based metallaaromatic compounds have not been developed as a catalyst. Herein, we describe an effective strategy to generate diverse arrays of ruthenabenzenes and demonstrated them as an aromatic equivalent of the Grubbs-type ruthenium alkylidene catalysts. These ruthenabenzenes can be prepared via an enyne metathesis and metallotropic [1,3]-shift cascade process to form alkyne-chelated ruthenium alkylidene intermediates followed by spontaneous cycloaromatization. The aromatic nature of these complexes was confirmed by spectroscopic and X-ray crystallographic data, and the mechanistic pathways for the cycloaromatization process were studied by DFT calculations. These ruthenabenzenes display robust catalytic activity for metathesis and other transformations, which illustrates that metallabenzenes are not only compounds of structural and theoretical interests but also are a novel platform for new catalyst development.
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Affiliation(s)
- Saswata Gupta
- Department of Chemistry, University of Illinois at Chicago, 845 W. Taylor St., Chicago, Illinois 60607, United States
| | - Siyuan Su
- Department of Chemistry, University of Illinois at Chicago, 845 W. Taylor St., Chicago, Illinois 60607, United States
| | - Yu Zhang
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, United States
| | - Peng Liu
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, United States
| | - Donald J Wink
- Department of Chemistry, University of Illinois at Chicago, 845 W. Taylor St., Chicago, Illinois 60607, United States
| | - Daesung Lee
- Department of Chemistry, University of Illinois at Chicago, 845 W. Taylor St., Chicago, Illinois 60607, United States
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4
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Zhang Q, Liang QJ, Xu JL, Xu YH, Loh TP. Palladium-catalyzed silaborative carbocyclizations of 1,6-diynes. Chem Commun (Camb) 2018; 54:2357-2360. [PMID: 29450429 DOI: 10.1039/c8cc00097b] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An addition/cyclization reaction of 1,6-diynes was developed for the synthesis of highly substituted 1,2-dialkylidenecycloalkanes. In this work, 1,6-diynes reacted with (dimethylphenylsilyl)pinacol-borane in the presence of a palladium catalyst to afford 1,2-dialkylidenecycloalkanes bearing silyl and boryl groups with a (Z,Z)-configuration in good to excellent yields. Moreover, the corresponding products could be easily converted into other synthetically useful compounds. This protocol provides an efficient and practical method of heteroelement-element linkage addition to the unsaturated 1,6-diynes.
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Affiliation(s)
- Qian Zhang
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China.
| | - Qiu-Ju Liang
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China.
| | - Jian-Lin Xu
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China.
| | - Yun-He Xu
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China.
| | - Teck-Peng Loh
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China. and Institute of Advanced Synthesis, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing, Jiangsu 210009, China and Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637616, Singapore
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5
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Ito Y, Yoshimatsu M. Metal-free Reductive Cyclization and Isomerization of Sulfanyl-1,6-diynes Using Sodium Borohydride. CHEM LETT 2014. [DOI: 10.1246/cl.140688] [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]
Affiliation(s)
- Yukiteru Ito
- Department of Chemistry, Faculty of Education, Gifu University
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6
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Cordonnier MCA, Kan SBJ, Gockel B, Goh SS, Anderson EA. Carbopalladation of bromoene-alkynylsilanes: mechanistic insights and synthesis of fused-ring bicyclic silanes and phenols. Org Chem Front 2014. [DOI: 10.1039/c4qo00123k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Palladium-catalyzed cyclizations of silylated bromoenynes lead to bicyclic cyclohexadienes that are precursors to enones and phenols. Novel cyclization pathways and mechanistic insights are also disclosed.
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Affiliation(s)
| | | | - Birgit Gockel
- Chemistry Research Laboratory
- University of Oxford
- Oxford, UK
| | - Shermin S. Goh
- Chemistry Research Laboratory
- University of Oxford
- Oxford, UK
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Yamamoto Y. Theoretical Study on Ruthenium-Catalyzed Hydrocarboxylative Dimerization of Phenylacetylene with Acetic Acid Leading to (1E,3E)-1,4-Diphenyl-1,3-butadienyl Acetate. Organometallics 2013. [DOI: 10.1021/om4007517] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yoshihiko Yamamoto
- Department
of Basic Medicinal Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University, Chikusa, Nagoya 464-8601, Japan
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8
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Yoshimatsu M, Tanabe G, Muraoka O. Chemistry of Propargyl Compounds Activated by Sulfur Functional Groups^|^mdash;Development of Methodology for the Synthesis of Heterocyles Triggered by Functionalizations. J SYN ORG CHEM JPN 2013. [DOI: 10.5059/yukigoseikyokaishi.71.1282] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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9
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Yoshimatsu M, Sasaki H, Sugimoto Y, Nagase Y, Tanabe G, Muraoka O. Copper-Catalyzed Complete Regio- and Stereoselective Cyclization of 1-Aryl-3-sulfanyl-4-oxahepta-1,6-diynes Triggered by Alkynylation. Org Lett 2012; 14:3190-3. [DOI: 10.1021/ol3011453] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mitsuhiro Yoshimatsu
- Department of Chemistry, Faculty of Education, Gifu University, Yanagido 1-1, Japan, and School of Pharmacy, Kinki University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502, Japan
| | - Hitomi Sasaki
- Department of Chemistry, Faculty of Education, Gifu University, Yanagido 1-1, Japan, and School of Pharmacy, Kinki University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502, Japan
| | - Yuko Sugimoto
- Department of Chemistry, Faculty of Education, Gifu University, Yanagido 1-1, Japan, and School of Pharmacy, Kinki University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502, Japan
| | - Yuya Nagase
- Department of Chemistry, Faculty of Education, Gifu University, Yanagido 1-1, Japan, and School of Pharmacy, Kinki University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502, Japan
| | - Genzoh Tanabe
- Department of Chemistry, Faculty of Education, Gifu University, Yanagido 1-1, Japan, and School of Pharmacy, Kinki University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502, Japan
| | - Osamu Muraoka
- Department of Chemistry, Faculty of Education, Gifu University, Yanagido 1-1, Japan, and School of Pharmacy, Kinki University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502, Japan
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10
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Cano R, Yus M, Ramón DJ. Impregnated Platinum on Magnetite as an Efficient, Fast, and Recyclable Catalyst for the Hydrosilylation of Alkynes. ACS Catal 2012. [DOI: 10.1021/cs300056e] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Rafael Cano
- Instituto de Síntesis Orgánica (ISO), and Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Alicante, Apdo. 99, E-03080-Alicante, Spain
| | - Miguel Yus
- Instituto de Síntesis Orgánica (ISO), and Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Alicante, Apdo. 99, E-03080-Alicante, Spain
| | - Diego J. Ramón
- Instituto de Síntesis Orgánica (ISO), and Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Alicante, Apdo. 99, E-03080-Alicante, Spain
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11
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Functional Polyethylene Glycol with Carboxyl-supported Platinum as an Efficient Catalysis System for the Hydrosilylation of Alkenes. Chin J Chem Eng 2012. [DOI: 10.1016/s1004-9541(12)60385-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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12
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Taige MA, Ahrens S, Strassner T. Platinum(II)-bis-(N-heterocyclic carbene) complexes: synthesis, structure and catalytic activity in the hydrosilylation of alkenes. J Organomet Chem 2011. [DOI: 10.1016/j.jorganchem.2011.04.030] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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13
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Gibeau AL, Snyder JK. Indium(III)-Catalyzed Hydrative Cyclization of 1,7-Diynyl Ethers. Org Lett 2011; 13:4280-3. [DOI: 10.1021/ol201624b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Amanda L. Gibeau
- Department of Chemistry and the Center for Chemical Methodology and Library Development (CMLD-BU), Boston University, Boston, Massachusetts 02215, United States
| | - John K. Snyder
- Department of Chemistry and the Center for Chemical Methodology and Library Development (CMLD-BU), Boston University, Boston, Massachusetts 02215, United States
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14
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15
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de Vekki DA, Uvarov VM, Reznikov AN, Skvortsov NK. Synthesis of platinum complexes containing (+)-bornyl- and (−)-menthylammonium in the outer coordination sphere and their catalytic activity in hydrosilylation reactions. Russ Chem Bull 2009. [DOI: 10.1007/s11172-008-0054-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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16
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17
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18
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Marchand D, Martinez J, Cavelier F. Straightforward Synthesis of Chiral Silylated Amino Acids through Hydrosilylation. European J Org Chem 2008. [DOI: 10.1002/ejoc.200800066] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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19
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Shibata T, Nakagawa N, Ueno Y, Endo K. Carbonylative and Hydrosilylative Carbocyclization of 1,5-Diynes for the Synthesis of Cyclic Dienones. Organometallics 2008. [DOI: 10.1021/om7012277] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Takanori Shibata
- Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University, Shinjuku, Tokyo, 169-8555, Japan
| | - Naohisa Nakagawa
- Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University, Shinjuku, Tokyo, 169-8555, Japan
| | - Yasunori Ueno
- Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University, Shinjuku, Tokyo, 169-8555, Japan
| | - Kohei Endo
- Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University, Shinjuku, Tokyo, 169-8555, Japan
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20
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Cationic palladium-catalyzed hydrosilylative cross-coupling of alkynes with alkenes forming 4-silylated-1-butene frameworks. PURE APPL CHEM 2008. [DOI: 10.1351/pac200880051179] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
A new hydrosilylative cross-coupling reaction of a variety of alkynes with several alkenes, which is catalyzed by a cationic Pd complex [Pd(η3-C3H5)(cod)]+[PF6]- (cod = 1,5-cyclooctadiene) was studied systematically. The reaction using HSiCl3 as an addend afforded more or less two types of products consisting of four possible derivatives, R1CH=CR2-CHR3-CHR4-SiCl3, which always contained 4-trichlorosilyl-1-butene frameworks, in acceptable combined yields. The coupling pattern was markedly dependent both on the precatalyst in the absence or presence of PPh3 ligand and on the combination of the alkyne and alkene partners employed. A possible catalytic cycle that involves an initial hydropalladation of an alkyne, followed by a facile and specific carbopalladation of an alkene, is proposed. At the same time, the lack of regioselectivity in the latter step is noted.
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21
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Shimamoto T, Chimori M, Sogawa H, Harada Y, Aoki M, Yamamoto K. Cationic Palladium Complex-Catalyzed Hydrosilylative Cross-Coupling of Alkynes with Alkenes. 1,4-Addition of Trichlorosilane to Form 4-Silyl-1-butene Framework. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2007. [DOI: 10.1246/bcsj.80.1814] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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22
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Perry RJ, Karageorgis M, Hensler J. Hydrosilylation Reactions of 1,3-Diynes and Bis(silyl hydrides): Model Studies and Polymerizations. Macromolecules 2007. [DOI: 10.1021/ma062663s] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Robert J. Perry
- GE Global Research, 1 Research Circle, Niskayuna, New York 12309, Lockheed Martin Aerospace, Bethesda, Maryland 20817, and Northrup Grumann Corporation, Los Angeles, California 90067
| | - Markos Karageorgis
- GE Global Research, 1 Research Circle, Niskayuna, New York 12309, Lockheed Martin Aerospace, Bethesda, Maryland 20817, and Northrup Grumann Corporation, Los Angeles, California 90067
| | - Joseph Hensler
- GE Global Research, 1 Research Circle, Niskayuna, New York 12309, Lockheed Martin Aerospace, Bethesda, Maryland 20817, and Northrup Grumann Corporation, Los Angeles, California 90067
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23
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Barone R, Attolini M, Arbelot M, Chanon M. WTDWTR: What To Do With This Reaction? A New Program in the Field of Computer-Aided Synthesis Design – Application to the Diels–Alder Reaction. European J Org Chem 2006. [DOI: 10.1002/ejoc.200600696] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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24
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Wile BM, Burford RJ, McDonald R, Ferguson MJ, Stradiotto M. Neutral and Cationic Platinum(II) Complexes Supported by a P,N-Functionalized Indene Ligand: Structural and Reactivity Comparisons with a Related Gold(III) Zwitterion. Organometallics 2006. [DOI: 10.1021/om050910v] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Bradley M. Wile
- Department of Chemistry, Dalhousie University, Halifax, Nova Scotia, Canada B3H 4J3, and X-Ray Crystallography Laboratory, Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - Richard J. Burford
- Department of Chemistry, Dalhousie University, Halifax, Nova Scotia, Canada B3H 4J3, and X-Ray Crystallography Laboratory, Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - Robert McDonald
- Department of Chemistry, Dalhousie University, Halifax, Nova Scotia, Canada B3H 4J3, and X-Ray Crystallography Laboratory, Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - Michael J. Ferguson
- Department of Chemistry, Dalhousie University, Halifax, Nova Scotia, Canada B3H 4J3, and X-Ray Crystallography Laboratory, Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - Mark Stradiotto
- Department of Chemistry, Dalhousie University, Halifax, Nova Scotia, Canada B3H 4J3, and X-Ray Crystallography Laboratory, Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
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Shimamoto T, Chimori M, Sogawa H, Yamamoto K. Cationic Palladium-Catalyzed Hydrosilylative Cross-Coupling of Alkynes with Alkenes. J Am Chem Soc 2005; 127:16410-1. [PMID: 16305224 DOI: 10.1021/ja0558342] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A cationic palladium complex-catalyzed cross-coupling of alkynes with alkenes is presented, which occurs selectively under the hydrosilylation conditions using trichlorosilane. The unique reaction might be well understood in terms of an initial hydropalladation of a given 1-alkyne to form regioselectively a 1-alkenylpalladium species, which, in turn, undergoes easily and specifically an alkene insertion. The resulting homoallylic organopalladium species terminates one catalytic cycle by substituting the palladium center with a trichlorosilyl group to give product(s).
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Affiliation(s)
- Takamitsu Shimamoto
- Department of Materials Science and Environmental Engineering, Tokyo University of Science, Yamaguchi, 1-1-1 Daigaku-Dori, Sanyo-Onoda, Yamaguchi 756-0884, Japan
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26
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Wakayanagi S, Shimamoto T, Chimori M, Yamamoto K. Cationic Palladium Complex-catalyzed Cyclization–Hydrosilylation of Alkadiynes and Enynes. CHEM LETT 2005. [DOI: 10.1246/cl.2005.160] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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27
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Shibata T, Kadowaki S, Takagi K. Chemo- and Regioselective Intramolecular Hydrosilylative Carbocyclization of Allenynes. Organometallics 2004. [DOI: 10.1021/om049677b] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Takanori Shibata
- Department of Chemistry, School of Science and Engineering, Waseda University, Shinjuku, Tokyo, 169-8555, Japan and Department of Chemistry, Faculty of Science, Okayama University, Tsushima, Okayama, 700-8530, Japan
| | - Sho Kadowaki
- Department of Chemistry, School of Science and Engineering, Waseda University, Shinjuku, Tokyo, 169-8555, Japan and Department of Chemistry, Faculty of Science, Okayama University, Tsushima, Okayama, 700-8530, Japan
| | - Kentaro Takagi
- Department of Chemistry, School of Science and Engineering, Waseda University, Shinjuku, Tokyo, 169-8555, Japan and Department of Chemistry, Faculty of Science, Okayama University, Tsushima, Okayama, 700-8530, Japan
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Perch NS, Widenhoefer RA. Mechanism of Palladium-Catalyzed Diene Cyclization/Hydrosilylation: Direct Observation of Intramolecular Carbometalation. J Am Chem Soc 2004; 126:6332-46. [PMID: 15149231 DOI: 10.1021/ja049806f] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The results of kinetic, deuterium-labeling, and low-temperature NMR studies have established a mechanism for the palladium-catalyzed cyclization/hydrosilylation of dimethyl diallylmalonate (1) with triethylsilane involving rapid, irreversible conversion of the palladium silyl complex [(phen)Pd(SiEt(3))(NCAr)](+) [BAr(4)](-) [Ar = 3,5-C(6)H(3)(CF(3))(2)] (4b) and 1 to the palladium 5-hexenyl chelate complex [(phen)Pd[eta(1),eta(2)-CH(CH(2)SiEt(3))CH(2)C(CO(2)Me)(2)CH(2)CH=CH(2)]](+) [BAr(4)](-) (5), followed by intramolecular carbometalation of 5 to form the palladium cyclopentylmethyl complex trans-[(phen)Pd[CH2CHCH2C(CO2Me)2CH2CHCH2SiEt3](NCAr)]+ [BAr4]- (6), and associative silylation of 6 to release 3 and regenerate 4b.
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Affiliation(s)
- Nicholas S Perch
- P. M. Gross Chemical Laboratory, Duke University, Durham, North Carolina 27708-0346, USA
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30
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Lomberget T, Chataigner I, Bouyssi D, Maddaluno J, Balme G. Diels–Alder cycloadditions of functionalized (Z)-1-benzylidene-2-methylene cyclohexanes: the beneficial effect of high pressure. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.03.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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31
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Chakrapani H, Liu C, Widenhoefer RA. Enantioselective cyclization/hydrosilylation of 1,6-enynes catalyzed by a cationic rhodium bis(phosphine) complex. Org Lett 2003; 5:157-9. [PMID: 12529129 DOI: 10.1021/ol027196n] [Citation(s) in RCA: 72] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reaction: see text] Reaction of 4,4-dicarbomethoxy-1-octene-6-yne (1) with triethylsilane and a catalytic 1:1 mixture of [Rh(COD)(2)](+) SbF(6)(-) and (R)-BIPHEMP (5 mol %) at 70 degrees C for 90 min gave (Z)-1,1-dicarbomethoxy-3-(1-triethylsilyl)ethylidene-4-methylcyclopentane (2) in 81% isolated yield with 98% de and 92% ee.
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Affiliation(s)
- Harinath Chakrapani
- P. M. Gross Chemical Laboratory, Duke University, Durham, North Carolina 27708-0346, USA
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32
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Liu C, Widenhoefer RA. Cyclization/Hydrosilylation of Functionalized Diynes Catalyzed by a Cationic Rhodium Bis(phosphine) Complex. Organometallics 2002. [DOI: 10.1021/om020643i] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Cong Liu
- Duke University, P. M. Gross Chemical Laboratory, Durham, North Carolina 27708-0346
| | - Ross A. Widenhoefer
- Duke University, P. M. Gross Chemical Laboratory, Durham, North Carolina 27708-0346
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