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Luque-Gómez A, García-Orduña P, Lahoz FJ, Iglesias M. Synthesis and catalytic activity of well-defined Co(I) complexes based on NHC-phosphane pincer ligands. Dalton Trans 2023; 52:12779-12788. [PMID: 37615585 DOI: 10.1039/d3dt00463e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Abstract
A new methodology for the preparation of Co(I)-NHC (NHC = N-heterocyclic carbene) complexes, namely, [Co(PCNHCP)(CO)2][Co(CO)4] (1) and [Co(PCNHCP)(CO)2]BF4 (2), has been developed (PCNHCP = 1,3-bis(2-(diphenylphosphanyl)ethyl)-imidazol-2-ylidene). Both complexes can be straightforwardly prepared by direct reaction of their parent imidazolium salts with the Co(0) complex Co2(CO)8. Complex 1 efficiently catalyses the reductive amination of furfural and levulinic acid employing silanes as reducing agents under mild conditions. Furfural has been converted into a variety of secondary and tertiary amines employing dimethyl carbonate as the solvent, while levulinic acid has been converted into pyrrolidines under solventless conditions. Dehydrocoupling of the silane to give polysilanes has been observed to occur as a side reaction of the hydrosilylation process.
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Affiliation(s)
- Ana Luque-Gómez
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/Pedro Cerbuna 12, 50009-Zaragoza, Spain.
| | - Pilar García-Orduña
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/Pedro Cerbuna 12, 50009-Zaragoza, Spain.
| | - Fernando J Lahoz
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/Pedro Cerbuna 12, 50009-Zaragoza, Spain.
| | - Manuel Iglesias
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/Pedro Cerbuna 12, 50009-Zaragoza, Spain.
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Stevens JE, Moore CE, Thomas CM. Si-H Bond Activation and Dehydrogenative Coupling of Silanes across the Iron-Amide Bond of a Bis(amido)bis(phosphine) Iron(II) Complex. J Am Chem Soc 2023; 145:794-799. [PMID: 36594789 DOI: 10.1021/jacs.2c12157] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Despite the utility of Si-Si bonds, there are relatively few examples of Si-Si bond formation by base metals. In this work, a four-coordinate iron complex, (PNNP)FeII, is shown to strongly activate the Si-H bonds in primary silanes across the Fe-amide bonds in a metal-ligand cooperative fashion. Upon treatment with excess silane, Si-Si dehydrogenative homocoupling is shown to occur across the Fe-Namide bond without concomitant oxidation and spin state changes at the Fe center.
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Affiliation(s)
- Jeremiah E Stevens
- Department of Chemistry and Biochemistry, The Ohio State University, 100 W. 18th Avenue, Columbus, Ohio 43210, United States
| | - Curtis E Moore
- Department of Chemistry and Biochemistry, The Ohio State University, 100 W. 18th Avenue, Columbus, Ohio 43210, United States
| | - Christine M Thomas
- Department of Chemistry and Biochemistry, The Ohio State University, 100 W. 18th Avenue, Columbus, Ohio 43210, United States
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Price JS, Emslie DJH, Berno B. Manganese Silyl Dihydride Complexes: A Spectroscopic, Crystallographic, and Computational Study of Nonclassical Silicate and Hydrosilane Hydride Isomers. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00179] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Wu G, Chakraborty U, Jacobi von Wangelin A. Regiocontrol in the cobalt-catalyzed hydrosilylation of alkynes. Chem Commun (Camb) 2018; 54:12322-12325. [PMID: 30310911 PMCID: PMC6243675 DOI: 10.1039/c8cc07267a] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly versatile cobalt-catalyzed hydrosilylations of alkynes is reported. Near-perfect regiocontrol/stereocontrol was induced by the choice of the ligand: bidentate phosphines afforded (E)-β-vinylsilanes; α-vinylsilanes formed with bipyridine ligands.
Hydrofunctionalizations of unsaturated hydrocarbons are key strategies for the synthesis of functionalized building blocks. Here, we report highly versatile cobalt-catalyzed hydrosilylations of alkynes that operate with minute amounts of the inexpensive, bench-stable pre-catalyst Co(OAc)2·4H2O under mild conditions (0.1–1 mol%, THF, r.t., 1 h). Near-perfect regiocontrol/stereocontrol was induced by the choice of the ligand: bidentate phosphines afforded (E)-β-vinylsilanes; α-vinylsilanes formed with bipyridine ligands.
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Affiliation(s)
- Guojiao Wu
- Department of Chemistry, University of Hamburg Martin Luther King Pl. 6, 20146 Hamburg, Germany.
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Hao J, Vabre B, Zargarian D. Reactions of Phenylhydrosilanes with Pincer–Nickel Complexes: Evidence for New Si–O and Si–C Bond Formation Pathways. J Am Chem Soc 2015; 137:15287-98. [PMID: 26562478 DOI: 10.1021/jacs.5b10066] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jingjun Hao
- Département
de Chimie, Université de Montréal, Montréal, Québec H3C 3J7, Canada
| | - Boris Vabre
- Département
de Chimie, Université de Montréal, Montréal, Québec H3C 3J7, Canada
| | - Davit Zargarian
- Département
de Chimie, Université de Montréal, Montréal, Québec H3C 3J7, Canada
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Synthesis and structural studies of a rare bis(phosphine) (hydrido) (silyl) platinum(Ⅱ) complex containing a Si–Si single bond. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2014.11.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Khalimon AY, McLeod NA, Ignatov SK, Okhapkin AI, Kuzmina LG, Howard JAK, Nikonov GI. Multiple coupling of silanes with imido complexes of Mo. Dalton Trans 2014; 43:8446-53. [PMID: 24740303 DOI: 10.1039/c4dt00154k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The bis(imido) complexes ((t)BuN[double bond, length as m-dash])2Mo(PMe3)(L) (L = PMe3, C2H4) react with up to three equivalents of silane PhSiH3 to give the imido-bridged disilyl silyl Mo(vi) complex ((t)BuN){μ-(t)BuN(SiHPh)2}Mo(H)(SiH2Ph)(PMe3)2 (3) studied by NMR, IR and X-ray diffraction. NMR data supported by DFT calculations show that complex 3 is an unusual example of a silyl hydride of Mo(VI), without significant SiH interaction. Mechanistic NMR studies revealed that silane addition proceeds in a stepwise manner via a series of Si-H∙∙∙M agostic and silanimine complexes whose structures were further elucidated by DFT calculations.
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Affiliation(s)
- Andrey Y Khalimon
- Chemistry Department, Brock University, 500 Glenridge Ave., St. Catharines, ON L2S 3A1, Canada.
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Tanabe M, Takahashi A, Fukuta T, Osakada K. Nickel-Catalyzed Cyclopolymerization of Hexyl- and Phenylsilanes. Organometallics 2013. [DOI: 10.1021/om301052f] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Makoto Tanabe
- Chemical Resources
Laboratory, Tokyo Institute of Technology, 4259-R1-3 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Atsushi Takahashi
- Chemical Resources
Laboratory, Tokyo Institute of Technology, 4259-R1-3 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Tomoko Fukuta
- Chemical Resources
Laboratory, Tokyo Institute of Technology, 4259-R1-3 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Kohtaro Osakada
- Chemical Resources
Laboratory, Tokyo Institute of Technology, 4259-R1-3 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
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Chen HY, Lu WY, Chen YJ, Hsu SCN, Ou SW, Peng WT, Jheng NY, Lai YC, Wu BS, Chung H, Chen Y, Huang TC. Synthesis, characterization, and catalytic activity of titanium iminophenoxide complexes in relation to the ring-opening polymerization ofL-lactide and ε-caprolactone. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/pola.26381] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Tanabe M, Deguchi T, Osakada K. Ring-Opening Reaction of a Pergermylated Platinacyclopentane Forming 1,4-Bis(arenethiolato)tetragermanes. Organometallics 2012. [DOI: 10.1021/om300655m] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Makoto Tanabe
- Chemical
Resources Laboratory, Tokyo Institute of Technology, 4259-R1-3 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Takashi Deguchi
- Chemical
Resources Laboratory, Tokyo Institute of Technology, 4259-R1-3 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Kohtaro Osakada
- Chemical
Resources Laboratory, Tokyo Institute of Technology, 4259-R1-3 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
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Tanabe M, Deguchi T, Osakada K. Chemical Properties of Tetragermaplatinacyclopentane. Insertion of an Alkyne into a Pt–Ge Bond and Silylation Caused by H2SiPh2. Organometallics 2011. [DOI: 10.1021/om200275w] [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]
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Corey JY. Reactions of hydrosilanes with transition metal complexes and characterization of the products. Chem Rev 2011; 111:863-1071. [PMID: 21250634 DOI: 10.1021/cr900359c] [Citation(s) in RCA: 353] [Impact Index Per Article: 27.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Joyce Y Corey
- Department of Chemistry and Biochemistry, University of Missouri-St. Louis, 63121, USA.
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Chen SJ, Li J, Dougan BA, Steren CA, Wang X, Chen XT, Lin Z, Xue ZL. Unexpected formation of a trinuclear complex containing a Ta(iv)–Ta(iv) bond in the reactions of ButNTa(NMe2)3 with silanes. Chem Commun (Camb) 2011; 47:8685-7. [DOI: 10.1039/c1cc12837j] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Dannappel K, Nienhaus R, Schürmann M, Costisella B, Jurkschat K. The UV-Light Initiated Reaction of Organosilanes with Tungsten Hexacarbonyl: Formation of an Organosilylene Complex and Organosilylium Salts. Z Anorg Allg Chem 2009. [DOI: 10.1002/zaac.200900204] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Arii H, Nanjo M, Mochida K. Characterization of Mononuclear and Dinuclear Germylplatinum Complexes and Ge−Ge Bond Formation at the Platinum Center. Organometallics 2008. [DOI: 10.1021/om800267k] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hidekazu Arii
- Department of Chemistry, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588, Japan
| | - Masato Nanjo
- Department of Chemistry, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588, Japan
| | - Kunio Mochida
- Department of Chemistry, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588, Japan
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Chan M. Weak Attractive Ligand–Polymer and Related Interactions in Catalysis and Reactivity: Impact, Applications, and Modeling. Chem Asian J 2008; 3:18-27. [DOI: 10.1002/asia.200700226] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Lee K, Clark TJ, Lough AJ, Manners I. Synthesis and dehydrocoupling reactivity of iron and ruthenium phosphine–borane complexes. Dalton Trans 2008:2732-40. [DOI: 10.1039/b718918d] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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