1
|
Sheldon DJ, Crimmin MR. Repurposing of F-gases: challenges and opportunities in fluorine chemistry. Chem Soc Rev 2022; 51:4977-4995. [PMID: 35616085 PMCID: PMC9207706 DOI: 10.1039/d1cs01072g] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Indexed: 11/24/2022]
Abstract
Fluorinated gases (F-gases) are routinely employed as refrigerants, blowing agents, and electrical insulators. These volatile compounds are potent greenhouse gases and consequently their release to the environment creates a significant contribution to global warming. This review article seeks to summarise: (i) the current applications of F-gases, (ii) the environmental issues caused by F-gases, (iii) current methods of destruction of F-gases and (iv) recent work in the field towards the chemical repurposing of F-gases. There is a great opportunity to tackle the environmental and sustainability issues created by F-gases by developing reactions that repurpose these molecules.
Collapse
Affiliation(s)
- Daniel J Sheldon
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, 82 Wood Lane, Shepherds Bush, London, W12 0BZ, UK.
| | - Mark R Crimmin
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, 82 Wood Lane, Shepherds Bush, London, W12 0BZ, UK.
| |
Collapse
|
2
|
Mondal R, Guin AK, Chakraborty G, Paul ND. Metal-ligand cooperative approaches in homogeneous catalysis using transition metal complex catalysts of redox noninnocent ligands. Org Biomol Chem 2022; 20:296-328. [PMID: 34904619 DOI: 10.1039/d1ob01153g] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Catalysis offers a straightforward route to prepare various value-added molecules starting from readily available raw materials. The catalytic reactions mostly involve multi-electron transformations. Hence, compared to the inexpensive and readily available 3d-metals, the 4d and 5d-transition metals get an extra advantage for performing multi-electron catalytic reactions as the heavier transition metals prefer two-electron redox events. However, for sustainable development, these expensive and scarce heavy metal-based catalysts need to be replaced by inexpensive, environmentally benign, and economically affordable 3d-metal catalysts. In this regard, a metal-ligand cooperative approach involving transition metal complexes of redox noninnocent ligands offers an attractive alternative. The synergistic participation of redox-active ligands during electron transfer events allows multi-electron transformations using 3d-metal catalysts and allows interesting chemical transformations using 4d and 5d-metals as well. Herein we summarize an up-to-date literature report on the metal-ligand cooperative approaches using transition metal complexes of redox noninnocent ligands as catalysts for a few selected types of catalytic reactions.
Collapse
Affiliation(s)
- Rakesh Mondal
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur Botanic Garden, Howrah 711103, India.
| | - Amit Kumar Guin
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur Botanic Garden, Howrah 711103, India.
| | - Gargi Chakraborty
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur Botanic Garden, Howrah 711103, India.
| | - Nanda D Paul
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur Botanic Garden, Howrah 711103, India.
| |
Collapse
|
3
|
Jones WD. Selectivity in the activation of C H bonds by rhodium and iridium complexes. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2022. [DOI: 10.1016/bs.adomc.2022.03.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
4
|
Ho SKY, Lam FYT, de Aguirre A, Maseras F, White AJP, Britovsek GJP. Photolytic Activation of Late-Transition-Metal–Carbon Bonds and Their Reactivity toward Oxygen. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00487] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sarah K. Y. Ho
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, 80 Wood Lane, London W12 0BZ, United Kingdom
| | - Francis Y. T. Lam
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, 80 Wood Lane, London W12 0BZ, United Kingdom
| | - Adiran de Aguirre
- Institute of Chemical Research of Catalonia, The Barcelona Institute for Science and Technology, Avgda. Països Catalans, 16, Tarragona 43007, Catalonia, Spain
| | - Feliu Maseras
- Institute of Chemical Research of Catalonia, The Barcelona Institute for Science and Technology, Avgda. Països Catalans, 16, Tarragona 43007, Catalonia, Spain
| | - Andrew J. P. White
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, 80 Wood Lane, London W12 0BZ, United Kingdom
| | - George J. P. Britovsek
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, 80 Wood Lane, London W12 0BZ, United Kingdom
| |
Collapse
|
5
|
|
6
|
Guo J, Cheng Z, Chen J, Chen X, Lu Z. Iron- and Cobalt-Catalyzed Asymmetric Hydrofunctionalization of Alkenes and Alkynes. Acc Chem Res 2021; 54:2701-2716. [PMID: 34011145 DOI: 10.1021/acs.accounts.1c00212] [Citation(s) in RCA: 106] [Impact Index Per Article: 35.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Transition metal catalyzed asymmetric hydrofunctionalization of readily available unsaturated hydrocarbons presents one of the most straightforward and atom-economic protocols to access valuable optically active products. For decades, noble transition metal catalysts have laid the cornerstone in this field, on account of their superior reactivity and selectivity. In recent years, from an economical and sustainable standpoint, first-row, earth-abundant transition metals have received considerable attention, due to their high natural reserves, affordable costs, and low toxicity. Meanwhile, the earth-abundant metal catalyzed hydrofunctionalization reactions have also gained much interest and been investigated gradually. However, since chiral ligand libraries for earth-abundant transition-metal catalysis are limited to date, the development of highly enantioselective versions remains a significant challenge.This Account summarizes our recent efforts in developing suitable chiral ligands for iron and cobalt catalysts and their applications in the highly enantioselective hydrofunctionalization reactions (hydroboration and hydrosilylation) of alkenes and alkynes. In ligand design, we envisioned that chiral unsymmetric NNN-tridentate (UNT) ligand scaffolds could promote these enantioselective transformations with earth-abundant metals. Therefore, several types of chiral UNT ligands were designed and prepared in our laboratory, utilizing readily available natural amino acids as chiral sources. In the very beginning, chiral oxazoline iminopyridine (OIP) ligands were proposed and investigated through the rational combination of nitrogen-containing ligand scaffolds. After a systematic survey of the ligand effects, the imine moiety in the rigid OIP ligands was replaced by a conformationally more flexible amine unit, leading to the construction of reactive oxazoline aminoisopropylpyridine (OAP) ligands. Subsequently, imidazoline iminopyridine (IIP) and thiazoline iminopyridine (TIP) ligands were prepared by altering the oxygen atom of oxazoline with nitrogen and sulfur linkers, respectively. To further expand the chiral ligand library, other tridentate ligands containing a twisted pincer, anionic, and nonrigid backbone were also designed and synthesized, including iminophenyl oxazolinyl phenylamine (IPOPA) and imidazoline phenyl picolinamide (ImPPA). The efficacy of these chiral UNT ligands for asymmetric induction in iron and cobalt catalysis has been demonstrated through asymmetric hydrofunctionalization of alkenes and asymmetric sequential hydrofunctionalization of alkynes, which exhibit excellent reactivity as well as high chemo-, regio-, and stereoselectivity with broad functional group tolerance. Notably, highly regio- and enantioselective hydrofunctionalization of challenging substrates, such as 1,1-disubstituted aryl alkenes and terminal aliphatic alkenes, was also achieved. Furthermore, the development of asymmetric sequential isomerization/hydroboration of internal alkenes and sequential hydrofunctionalization of alkynes further demonstrates the synthetic power of these catalytic systems. The chiral enantioenriched products obtained by these methodologies could be potentially utilized in organic synthesis, medicinal chemistry, and materials science. We believe that our continuous efforts in this field would be beneficial to the development of asymmetric earth-abundant metal catalysis.
Collapse
Affiliation(s)
- Jun Guo
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Zhaoyang Cheng
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Jianhui Chen
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Xu Chen
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Zhan Lu
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou 310058, China
- College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, China
| |
Collapse
|
7
|
Zhang M, Wu H, Yang J, Huang G. A Computational Mechanistic Analysis of Iridium-Catalyzed C(sp3)–H Borylation Reveals a One-Stone–Two-Birds Strategy to Enhance Catalytic Activity. ACS Catal 2021. [DOI: 10.1021/acscatal.1c00389] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Mei Zhang
- Department of Chemistry, School of Science and Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, Tianjin 300072, People’s Republic of China
| | - Hongli Wu
- Department of Chemistry, School of Science and Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, Tianjin 300072, People’s Republic of China
| | - Jinjin Yang
- Department of Chemistry, School of Science and Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, Tianjin 300072, People’s Republic of China
| | - Genping Huang
- Department of Chemistry, School of Science and Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, Tianjin 300072, People’s Republic of China
| |
Collapse
|
8
|
Hossain I, Schmidt JAR. Cationic Nickel(II)-Catalyzed Hydrosilylation of Alkenes: Role of P, N-Type Ligand Scaffold on Selectivity and Reactivity. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00551] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Istiak Hossain
- Department of Chemistry & Biochemistry, School of Green Chemistry and Engineering, College of Natural Sciences and Mathematics, The University of Toledo, 2801 W. Bancroft St. MS 602, Toledo, Ohio 43606-3390, United States
| | - Joseph A. R. Schmidt
- Department of Chemistry & Biochemistry, School of Green Chemistry and Engineering, College of Natural Sciences and Mathematics, The University of Toledo, 2801 W. Bancroft St. MS 602, Toledo, Ohio 43606-3390, United States
| |
Collapse
|
9
|
Beaumier EP, Ott AA, Wen X, Davis-Gilbert ZW, Wheeler TA, Topczewski JJ, Goodpaster JD, Tonks IA. Ti-catalyzed ring-opening oxidative amination of methylenecyclopropanes with diazenes. Chem Sci 2020; 11:7204-7209. [PMID: 34123005 PMCID: PMC8159277 DOI: 10.1039/d0sc01998d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 06/20/2020] [Indexed: 12/22/2022] Open
Abstract
The ring-opening oxidative amination of methylenecyclopropanes (MCPs) with diazenes catalyzed by py3TiCl2(NR) complexes is reported. This reaction selectively generates branched α-methylene imines as opposed to linear α,β-unsaturated imines, which are difficult to access via other methods. Products can be isolated as the imine or hydrolyzed to the corresponding ketone in good yields. Mechanistic investigation via density functional theory suggests that the regioselectivity of these products results from a Curtin-Hammett kinetic scenario, where reversible β-carbon elimination of a spirocyclic [2 + 2] azatitanacyclobutene intermediate is followed by selectivity-determining β-hydrogen elimination of the resulting metallacycle. Further functionalizations of these branched α-methylene imine products are explored, demonstrating their utility as building blocks.
Collapse
Affiliation(s)
- Evan P Beaumier
- Department of Chemistry, University of Minnesota - Twin Cities 207 Pleasant St SE Minneapolis MN 55455 USA
| | - Amy A Ott
- Department of Chemistry, University of Minnesota - Twin Cities 207 Pleasant St SE Minneapolis MN 55455 USA
| | - Xuelan Wen
- Department of Chemistry, University of Minnesota - Twin Cities 207 Pleasant St SE Minneapolis MN 55455 USA
| | - Zachary W Davis-Gilbert
- Department of Chemistry, University of Minnesota - Twin Cities 207 Pleasant St SE Minneapolis MN 55455 USA
| | - T Alexander Wheeler
- Department of Chemistry, University of Minnesota - Twin Cities 207 Pleasant St SE Minneapolis MN 55455 USA
| | - Joseph J Topczewski
- Department of Chemistry, University of Minnesota - Twin Cities 207 Pleasant St SE Minneapolis MN 55455 USA
| | - Jason D Goodpaster
- Department of Chemistry, University of Minnesota - Twin Cities 207 Pleasant St SE Minneapolis MN 55455 USA
| | - Ian A Tonks
- Department of Chemistry, University of Minnesota - Twin Cities 207 Pleasant St SE Minneapolis MN 55455 USA
| |
Collapse
|
10
|
Rej S, Chatani N. Rh(ii)-catalyzed branch-selective C-H alkylation of aryl sulfonamides with vinylsilanes. Chem Sci 2020; 11:389-395. [PMID: 32206270 PMCID: PMC7069504 DOI: 10.1039/c9sc04308j] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Accepted: 11/09/2019] [Indexed: 01/17/2023] Open
Abstract
Rhodium(ii)-catalyzed unusual branch-selective ortho-C-H alkylation of aryl sulfonamides with vinylsilanes was achieved using an 8-aminoquinoline directing group. Notably, the para-substituted aryl sulfonamides gave mono-(branched)alkylated products exclusively without the formation of any double C-H alkylated byproducts. The results of deuterium labeling experiments suggest that both hydrometalation and carbometalation pathways are involved in this conversion.
Collapse
Affiliation(s)
- Supriya Rej
- Department of Applied Chemistry , Faculty of Engineering , Osaka University , Suita , Osaka 565-0871 , Japan .
| | - Naoto Chatani
- Department of Applied Chemistry , Faculty of Engineering , Osaka University , Suita , Osaka 565-0871 , Japan .
| |
Collapse
|
11
|
DiBenedetto TA, Parsons AM, Jones WD. Markovnikov-Selective Hydroboration of Olefins Catalyzed by a Copper N-Heterocyclic Carbene Complex. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00394] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tarah A. DiBenedetto
- Department of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - Astrid M. Parsons
- Department of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - William D. Jones
- Department of Chemistry, University of Rochester, Rochester, New York 14627, United States
| |
Collapse
|
12
|
Parsons AM, Jones WD. Photolysis of Tp'Rh(CNneopentyl)(PhNCNneopentyl) in the presence of ketones and esters: kinetic and thermodynamic selectivity for activation of different aliphatic C-H bonds. Dalton Trans 2019; 48:10945-10952. [PMID: 31165834 DOI: 10.1039/c9dt01802f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The active fragment [Tp'Rh(CNneopentyl)], generated from the precursor Tp'Rh(CNneopentyl)(PhN[double bond, length as m-dash]CNneopentyl), underwent oxidative addition of substituted ketones and esters resulting in Tp'Rh(CNneopentyl)(R)(H) complexes (Tp' = tris-(3,5-dimethylpyrazolyl)borate). These C-H activated complexes underwent reductive elimination at varying temperatures (24-70 °C) in C6D6 or C6D12. Using previously established kinetic techniques, the relative Rh-C bond strengths were calculated. Analysis of the relative Rh-C bond strengths vs. C-H bond strengths shows a linear correlation with slope RM-C/C-H = 1.22 (12). In general, α-substituents increase the relative Rh-C bond strengths compared to the C-H bond that is broken.
Collapse
Affiliation(s)
- Astrid M Parsons
- Department of Chemistry, University of Rochester, Rochester, New York 14627, USA.
| | | |
Collapse
|
13
|
Zhong RL, Sakaki S. sp3 C–H Borylation Catalyzed by Iridium(III) Triboryl Complex: Comprehensive Theoretical Study of Reactivity, Regioselectivity, and Prediction of Excellent Ligand. J Am Chem Soc 2019; 141:9854-9866. [PMID: 31124356 DOI: 10.1021/jacs.9b01767] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Rong-Lin Zhong
- Fukui Institute for Fundamental Chemistry, Kyoto University, Nishi-hiraki-cho 34-4, Takano, Sakyo-ku, Kyoto 606-8103, Japan
| | - Shigeyoshi Sakaki
- Fukui Institute for Fundamental Chemistry, Kyoto University, Nishi-hiraki-cho 34-4, Takano, Sakyo-ku, Kyoto 606-8103, Japan
| |
Collapse
|
14
|
Yuwen J, Brennessel WW, Jones WD. Coordination or Oxidative Addition? Activation of N–H with [Tp′Rh(PMe3)]. Inorg Chem 2018; 58:557-566. [DOI: 10.1021/acs.inorgchem.8b02752] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jing Yuwen
- Department of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - William W. Brennessel
- Department of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - William D. Jones
- Department of Chemistry, University of Rochester, Rochester, New York 14627, United States
| |
Collapse
|
15
|
Affiliation(s)
- Maciej Zaranek
- Faculty of Chemistry and the Center for Advanced Technology, Adam Mickiewicz University in Poznań, Umultowska 89 B/C, 61-614 Poznań, Poland
| | - Piotr Pawluc
- Faculty of Chemistry and the Center for Advanced Technology, Adam Mickiewicz University in Poznań, Umultowska 89 B/C, 61-614 Poznań, Poland
| |
Collapse
|
16
|
Yang JD, Ji P, Xue XS, Cheng JP. Recent Advances and Advisable Applications of Bond Energetics in Organic Chemistry. J Am Chem Soc 2018; 140:8611-8623. [DOI: 10.1021/jacs.8b04104] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Jin-Dong Yang
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Pengju Ji
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Xiao-Song Xue
- State Key Laboratory of Elemento-organic Chemistry, Collaborative Innovation Centre of Chemical Science and Engineering, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Jin-Pei Cheng
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University, Beijing 100084, China
- State Key Laboratory of Elemento-organic Chemistry, Collaborative Innovation Centre of Chemical Science and Engineering, College of Chemistry, Nankai University, Tianjin 300071, China
| |
Collapse
|
17
|
Cundari TR, Jacobs BP, MacMillan SN, Wolczanski PT. Dispersion forces play a role in (Me 2IPr)Fe([double bond, length as m-dash]NAd)R 2 (Ad = adamantyl; R = neoPe, 1-nor) insertions and Fe-R bond dissociation enthalpies (BDEs). Dalton Trans 2018; 47:6025-6030. [PMID: 29687794 DOI: 10.1039/c7dt04145d] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The effects of dispersion on migratory insertion reactions and related iron-carbon bond dissociation energies pertaining to (Me2IPr)FeR2 (R = neoPe, 1-nor), and the conversion of (Me2IPr)Fe([double bond, length as m-dash]NAd)R2 to (Me2IPr)Fe{N(Ad}R)R are investigated via calculations and structural comparisons. Dispersion appears to be an underappreciated, major contributor to common structure and reactivity relationships.
Collapse
Affiliation(s)
- Thomas R Cundari
- Department of Chemistry, CASCaM, University of North Texas, Denton, Texas 76201, USA
| | | | | | | |
Collapse
|
18
|
Chatani N. The Use of a Rhodium Catalyst/8-Aminoquinoline Directing Group in the C-H Alkylation of Aromatic Amides with Alkenes: Possible Generation of a Carbene Intermediate from an Alkene. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2018. [DOI: 10.1246/bcsj.20170316] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Naoto Chatani
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871
| |
Collapse
|
19
|
Affiliation(s)
- Aaron Sattler
- Corporate Strategic Research, ExxonMobil Research & Engineering Company, 1545 Route 22 East, Annandale, New Jersey 08801, United States
| |
Collapse
|
20
|
Wolczanski PT. Activation of Carbon–Hydrogen Bonds via 1,2-RH-Addition/-Elimination to Early Transition Metal Imides. Organometallics 2018. [DOI: 10.1021/acs.organomet.7b00753] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Peter T. Wolczanski
- Department of Chemistry & Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853, United States
| |
Collapse
|
21
|
Rauch M, Ruccolo S, Parkin G. Synthesis, Structure, and Reactivity of a Terminal Magnesium Hydride Compound with a Carbatrane Motif, [Tism PriBenz]MgH: A Multifunctional Catalyst for Hydrosilylation and Hydroboration. J Am Chem Soc 2017; 139:13264-13267. [PMID: 28901762 DOI: 10.1021/jacs.7b06719] [Citation(s) in RCA: 92] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The tris[(1-isopropylbenzimidazol-2-yl)dimethylsilyl)]methyl ligand, [TismPriBenz], has been employed to form the magnesium carbatrane compound, [TismPriBenz]MgH, which possesses a terminal hydride ligand. Specifically, [TismPriBenz]MgH is obtained via the reaction of [TismPriBenz]MgMe with PhSiH3. The reactivity of [TismPriBenz]MgMe and [TismPriBenz]MgH allows access to a variety of other structurally characterized carbatrane derivatives, including [TismPriBenz]MgX [X = F, Cl, Br, I, SH, N(H)Ph, CH(Me)Ph, O2CMe, S2CMe]. In addition, [TismPriBenz]MgH is a catalyst for (i) hydrosilylation and hydroboration of styrene to afford the Markovnikov products, Ph(Me)C(H)SiH2Ph and Ph(Me)C(H)Bpin, and (ii) hydroboration of carbodiimides and pyridine to form N-boryl formamidines and N-boryl 1,4- and 1,2-dihydropyridines, respectively.
Collapse
Affiliation(s)
- Michael Rauch
- Department of Chemistry, Columbia University , New York, New York 10027, United States
| | - Serge Ruccolo
- Department of Chemistry, Columbia University , New York, New York 10027, United States
| | - Gerard Parkin
- Department of Chemistry, Columbia University , New York, New York 10027, United States
| |
Collapse
|
22
|
Eisenstein O, Milani J, Perutz RN. Selectivity of C–H Activation and Competition between C–H and C–F Bond Activation at Fluorocarbons. Chem Rev 2017; 117:8710-8753. [DOI: 10.1021/acs.chemrev.7b00163] [Citation(s) in RCA: 221] [Impact Index Per Article: 31.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Odile Eisenstein
- Institut
Charles Gerhardt, UMR 5253 CNRS Université Montpellier, cc 1501,
Place E. Bataillon, 34095 Montpellier, France
- Centre
for Theoretical and Computational Chemistry (CTCC), Department of
Chemistry, University of Oslo, P.O. Box 1033, Blindern, 0315 Oslo, Norway
| | - Jessica Milani
- Department
of Chemistry, University of York, York YO10 5DD, United Kingdom
| | - Robin N. Perutz
- Department
of Chemistry, University of York, York YO10 5DD, United Kingdom
| |
Collapse
|
23
|
Xue XS, Ji P, Zhou B, Cheng JP. The Essential Role of Bond Energetics in C-H Activation/Functionalization. Chem Rev 2017; 117:8622-8648. [PMID: 28281752 DOI: 10.1021/acs.chemrev.6b00664] [Citation(s) in RCA: 304] [Impact Index Per Article: 43.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The most fundamental concepts in chemistry are structure, energetics, reactivity and their inter-relationships, which are indispensable for promoting chemistry into a rational science. In this regard, bond energy, the intrinsic determinant directly related to structure and reactivity, should be most essential in serving as a quantitative basis for the design and understanding of organic transformations. Although C-H activation/functionalization have drawn tremendous research attention and flourished during the past decades, understanding the governing rules of bond energetics in these processes is still fragmentary and seems applicable only to limited cases, such as metal-oxo-mediated hydrogen atom abstraction. Despite the complexity of C-H activation/functionalization and the difficulties in measuring bond energies both for the substrates and intermediates, this is definitely a very important issue that should be more generally contemplated. To this end, this review is rooted in the energetic aspects of C-H activation/functionalization, which were previously rarely discussed in detail. Starting with a concise but necessary introduction of various classical methods for measuring heterolytic and homolytic energies for C-H bonds, the present review provides examples that applied the concept and values of C-H bond energy in rationalizing the observations associated with reactivity and/or selectivity in C-H activation/functionalization.
Collapse
Affiliation(s)
- Xiao-Song Xue
- State Key Laboratory of Elemento-organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering, Nankai University , Tianjin, 300071, China
| | - Pengju Ji
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University , Beijing, 100084, China
| | - Biying Zhou
- State Key Laboratory of Elemento-organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering, Nankai University , Tianjin, 300071, China
| | - Jin-Pei Cheng
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University , Beijing, 100084, China.,State Key Laboratory of Elemento-organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering, Nankai University , Tianjin, 300071, China
| |
Collapse
|
24
|
Jiao Y, Brennessel WW, Jones WD. Nitrile coordination to rhodium does not lead to C-H activation. Acta Crystallogr C Struct Chem 2016; 72:850-852. [PMID: 27811424 DOI: 10.1107/s2053229616006859] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Accepted: 04/22/2016] [Indexed: 11/11/2022] Open
Abstract
Tris(pyrazolyl)borate complexes of rhodium are well known to activate C-H bonds. The reactive [Tp'Rh(PMe3)] fragment [Tp' is tris(3,5-dimethylpyrazol-1-yl)hydroborate] is found to react with valeronitrile to give the κ1N-bound complex (pentanenitrile-κN)(trimethylphosphane-κP)[tris(3,5-dimethylimidazol-1-yl)hydroborato-κ2N2,N2']rhodium(I), [Rh(C15H22BN6)(C5H9N)(C3H9P)]. In contrast to the widespread evidence for the reaction of this fragment with C-H bonds via oxidative addition, no evidence for such a complex is observed.
Collapse
Affiliation(s)
- Yunzhe Jiao
- Department of Chemistry, University of Rochester, Rochester, NY 14627, USA
| | | | - William D Jones
- Department of Chemistry, University of Rochester, Rochester, NY 14627, USA
| |
Collapse
|
25
|
Yuwen J, Jiao Y, Brennessel WW, Jones WD. Determination of Rhodium–Alkoxide Bond Strengths in Tp′Rh(PMe3)(OR)H. Inorg Chem 2016; 55:9482-91. [DOI: 10.1021/acs.inorgchem.6b01992] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jing Yuwen
- Department of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - Yunzhe Jiao
- Department of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - William W. Brennessel
- Department of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - William D. Jones
- Department of Chemistry, University of Rochester, Rochester, New York 14627, United States
| |
Collapse
|
26
|
Oulié P, Dinoi C, Li C, Sournia-Saquet A, Jacob K, Vendier L, Etienne M. CH Bond Activation of Unsaturated Hydrocarbons by a Niobium Methyl Cyclopropyl Precursor. Cyclopropyl Ring Opening and Alkyne Coupling Reaction. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00506] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Pascal Oulié
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 Route de Narbonne, BP44099, F-31077 Toulouse Cedex
4, France
- Université de Toulouse, UPS, INPT, LCC, F-31077 Toulouse
Cedex 4, France
| | - Chiara Dinoi
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 Route de Narbonne, BP44099, F-31077 Toulouse Cedex
4, France
- Université de Toulouse, UPS, INPT, LCC, F-31077 Toulouse
Cedex 4, France
| | - Chen Li
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 Route de Narbonne, BP44099, F-31077 Toulouse Cedex
4, France
- Université de Toulouse, INSA-CNRS-UPS, LPCNO, 135 Avenue de Rangueil, F-31077 Toulouse Cedex 4, France
| | - Alix Sournia-Saquet
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 Route de Narbonne, BP44099, F-31077 Toulouse Cedex
4, France
- Université de Toulouse, UPS, INPT, LCC, F-31077 Toulouse
Cedex 4, France
| | - Kane Jacob
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 Route de Narbonne, BP44099, F-31077 Toulouse Cedex
4, France
- Université de Toulouse, UPS, INPT, LCC, F-31077 Toulouse
Cedex 4, France
| | - Laure Vendier
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 Route de Narbonne, BP44099, F-31077 Toulouse Cedex
4, France
- Université de Toulouse, UPS, INPT, LCC, F-31077 Toulouse
Cedex 4, France
| | - Michel Etienne
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 Route de Narbonne, BP44099, F-31077 Toulouse Cedex
4, France
- Université de Toulouse, UPS, INPT, LCC, F-31077 Toulouse
Cedex 4, France
| |
Collapse
|
27
|
Sun Y, Tang H, Chen K, Hu L, Yao J, Shaik S, Chen H. Two-State Reactivity in Low-Valent Iron-Mediated C–H Activation and the Implications for Other First-Row Transition Metals. J Am Chem Soc 2016; 138:3715-30. [DOI: 10.1021/jacs.5b12150] [Citation(s) in RCA: 108] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Yihua Sun
- Beijing
National Laboratory for Molecular Sciences (BNLMS), Key Laboratory
of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Hao Tang
- Beijing
National Laboratory for Molecular Sciences (BNLMS), Key Laboratory
of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Kejuan Chen
- Beijing
National Laboratory for Molecular Sciences (BNLMS), Key Laboratory
of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Lianrui Hu
- Beijing
National Laboratory for Molecular Sciences (BNLMS), Key Laboratory
of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Jiannian Yao
- Beijing
National Laboratory for Molecular Sciences (BNLMS), Key Laboratory
of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Sason Shaik
- Institute
of Chemistry and the Lise Meitner-Minerva Center for Computational
Quantum Chemistry, The Hebrew University of Jerusalem, 91904 Jerusalem, Israel
| | - Hui Chen
- Beijing
National Laboratory for Molecular Sciences (BNLMS), Key Laboratory
of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| |
Collapse
|
28
|
Torker S, Koh MJ, Khan RKM, Hoveyda AH. Regarding a Persisting Puzzle in Olefin Metathesis with Ru Complexes: Why are Transformations of Alkenes with a Small Substituent Z-Selective? Organometallics 2016. [DOI: 10.1021/acs.organomet.5b00970] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Sebastian Torker
- Department of Chemistry,
Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Ming Joo Koh
- Department of Chemistry,
Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - R. Kashif M. Khan
- Department of Chemistry,
Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Amir H. Hoveyda
- Department of Chemistry,
Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| |
Collapse
|
29
|
|
30
|
Gair JJ, Young AJ, Scepaniak JJ, Simone PM, Chau CT, Peterson AA, Nesset Ferguson EM, Oloo WN, Welna DT, Siverson JI, Stahl LM, Schaller CP. Reaction of a polyphosphino ruthenium(II) acetate complex with Grignard reagents: Halogenation, alkylation and β-elimination. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2015.10.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
31
|
Wang DY, Choliy Y, Haibach MC, Hartwig JF, Krogh-Jespersen K, Goldman AS. Assessment of the Electronic Factors Determining the Thermodynamics of "Oxidative Addition" of C-H and N-H Bonds to Ir(I) Complexes. J Am Chem Soc 2015; 138:149-63. [PMID: 26652221 DOI: 10.1021/jacs.5b09522] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A study of electronic factors governing the thermodynamics of C-H and N-H bond addition to Ir(I) complexes was conducted. DFT calculations were performed on an extensive series of trans-(PH3)2IrXL complexes (L = NH3 and CO; X = various monodentate ligands) to parametrize the relative σ- and π-donating/withdrawing properties of the various ligands, X. Computed energies of oxidative addition of methane to a series of three- and four-coordinate Ir(I) complexes bearing an ancillary ligand, X, were correlated with the resulting (σ(X), π(X)) parameter set. Regression analysis indicates that the thermodynamics of addition of methane to trans-(PH3)2IrX are generally strongly disfavored by increased σ-donation from the ligand X, in contradiction to widely held views on oxidative addition. The trend for oxidative addition of methane to four-coordinate Ir(I) was closely related to that observed for the three-coordinate complexes, albeit slightly more complicated. The computational analysis was found to be consistent with the rates of reductive elimination of benzene from a series of isoelectronic Ir(III) phenyl hydride complexes, measured experimentally in this work and previously reported. Extending the analysis of ancillary ligand energetic effects to the oxidative addition of ammonia to three-coordinate Ir(I) complexes leads to the conclusion that increasing σ-donation by X also disfavors oxidative addition of N-H bonds to trans-(PH3)2IrX. However, coordination of NH3 to the Ir(I) center is disfavored even more strongly by increasing σ-donation by X, which explains why the few documented examples of H-NH2 oxidative addition to transition metals involve complexes with strongly σ-donating ligands situated trans to the site of addition. An orbital-based rationale for the observed results is presented.
Collapse
Affiliation(s)
- David Y Wang
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey , New Brunswick, New Jersey 08903, United States
| | - Yuriy Choliy
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey , New Brunswick, New Jersey 08903, United States
| | - Michael C Haibach
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey , New Brunswick, New Jersey 08903, United States
| | - John F Hartwig
- Department of Chemistry, University of California, Berkeley , Berkeley, California 94720-1460, United States
| | - Karsten Krogh-Jespersen
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey , New Brunswick, New Jersey 08903, United States
| | - Alan S Goldman
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey , New Brunswick, New Jersey 08903, United States
| |
Collapse
|
32
|
Crabtree RH. A. E. Shilov's influence on early work in organometallic CH activation and functionalization. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2015.02.031] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
33
|
Huang G, Kalek M, Liao RZ, Himo F. Mechanism, reactivity, and selectivity of the iridium-catalyzed C(sp 3)-H borylation of chlorosilanes. Chem Sci 2015; 6:1735-1746. [PMID: 29163873 PMCID: PMC5644124 DOI: 10.1039/c4sc01592d] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Accepted: 12/04/2014] [Indexed: 01/03/2023] Open
Abstract
The iridium-catalyzed C(sp3)-H borylation of methylchlorosilanes is investigated by means of density functional theory, using the B3LYP and M06 functionals. The calculations establish that the resting state of the catalyst is a seven-coordinate Ir(v) species that has to be converted into an Ir(iii)tris(boryl) complex in order to effect the oxidative addition of the C-H bond. This is then followed by a C-B reductive elimination to yield the borylated product, and the catalytic cycle is finally completed by the regeneration of the active catalyst over two facile steps. The two employed functionals give somewhat different conclusions concerning the nature of the rate-determining step, and whether reductive elimination occurs directly or after a prior isomerization of the Ir(v) hydride intermediate complex. The calculations reproduce quite well the experimentally-observed trends in the reactivities of substrates with different substituents. It is demonstrated that the reactivity can be correlated to the Ir-C bond dissociation energies of the corresponding Ir(v) hydride intermediates. The effect of the chlorosilyl group is identified to originate from the α-carbanion-stabilizing effect of the silicon, which is further reinforced by the presence of an electron-withdrawing chlorine substituent. Furthermore, the source of selectivity for the borylation of primary over secondary C(sp3)-H can be explained on a steric basis, by repulsion between the alkyl group and the Ir/ligand moiety. Finally, the difference in the reactivity between C(sp3)-H and C(sp2)-H borylation is investigated and rationalized in terms of distortion/interaction analysis.
Collapse
Affiliation(s)
- Genping Huang
- Department of Organic Chemistry , Arrhenius Laboratory , Stockholm University , SE-106 91 Stockholm , Sweden .
| | - Marcin Kalek
- Department of Organic Chemistry , Arrhenius Laboratory , Stockholm University , SE-106 91 Stockholm , Sweden .
| | - Rong-Zhen Liao
- Department of Organic Chemistry , Arrhenius Laboratory , Stockholm University , SE-106 91 Stockholm , Sweden .
| | - Fahmi Himo
- Department of Organic Chemistry , Arrhenius Laboratory , Stockholm University , SE-106 91 Stockholm , Sweden .
| |
Collapse
|
34
|
Procacci B, Jiao Y, Evans ME, Jones WD, Perutz RN, Whitwood AC. Activation of B–H, Si–H, and C–F Bonds with Tp′Rh(PMe3) Complexes: Kinetics, Mechanism, and Selectivity. J Am Chem Soc 2015; 137:1258-72. [DOI: 10.1021/ja5113172] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
| | - Yunzhe Jiao
- Department
of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - Meagan E. Evans
- Department
of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - William D. Jones
- Department
of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - Robin N. Perutz
- Department
of Chemistry, University of York, York YO10 5DD, U.K
| | | |
Collapse
|
35
|
Jones WD. The Effects of Ancillary Ligands on Metal–Carbon Bond Strengths as Determined by C–H Activation. TOP ORGANOMETAL CHEM 2015. [DOI: 10.1007/3418_2015_138] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
|
36
|
Hu Y, Romero N, Dinoi C, Vendier L, Mallet-Ladeira S, McGrady JE, Locati A, Maseras F, Etienne M. β-H Abstraction/1,3-CH Bond Addition as a Mechanism for the Activation of CH Bonds at Early Transition Metal Centers. Organometallics 2014. [DOI: 10.1021/om501056b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yimu Hu
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205, route de Narbonne, BP 44099, F-31077 Toulouse Cedex 4, France
- Université de Toulouse, UPS, INPT, LCC, F-31077 Toulouse Cedex 4, France
| | - Nuria Romero
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205, route de Narbonne, BP 44099, F-31077 Toulouse Cedex 4, France
- Université de Toulouse, UPS, INPT, LCC, F-31077 Toulouse Cedex 4, France
| | - Chiara Dinoi
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205, route de Narbonne, BP 44099, F-31077 Toulouse Cedex 4, France
- Université de Toulouse, UPS, INPT, LCC, F-31077 Toulouse Cedex 4, France
| | - Laure Vendier
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205, route de Narbonne, BP 44099, F-31077 Toulouse Cedex 4, France
- Université de Toulouse, UPS, INPT, LCC, F-31077 Toulouse Cedex 4, France
| | - Sonia Mallet-Ladeira
- Institut
de Chimie de Toulouse (FR 2599), Université Paul Sabatier, 118, route
de Narbonne, F-31062 Toulouse Cedex 9, France
| | - John E. McGrady
- Department
of Chemistry, Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford OX1 3QR, United Kingdom
| | - Abel Locati
- Institute of Chemical Research of Catalonia (ICIQ), Av. Paisos Catalans, 16, 43007 Tarragona, Spain
| | - Feliu Maseras
- Institute of Chemical Research of Catalonia (ICIQ), Av. Paisos Catalans, 16, 43007 Tarragona, Spain
- Departament
de Química, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - Michel Etienne
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205, route de Narbonne, BP 44099, F-31077 Toulouse Cedex 4, France
- Université de Toulouse, UPS, INPT, LCC, F-31077 Toulouse Cedex 4, France
| |
Collapse
|
37
|
Jiao Y, Brennessel WW, Jones WD. Synthesis and energetics of Tp′Rh[P(OMe)3](R)H: a systematic investigation of ligand effects on C–H activation at rhodium. Chem Sci 2014. [DOI: 10.1039/c3sc52748d] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
|
38
|
Transition-Metal-Catalyzed Difluoromethylation, Difluoromethylenation, and Polydifluoromethylenation Reactions. TOP ORGANOMETAL CHEM 2014. [DOI: 10.1007/3418_2014_87] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
39
|
Jiao Y, Morris J, Brennessel WW, Jones WD. Kinetic and Thermodynamic Selectivity of Intermolecular C–H Activation at [Tp′Rh(PMe3)]. How Does the Ancillary Ligand Affect the Metal–Carbon Bond Strength? J Am Chem Soc 2013; 135:16198-212. [DOI: 10.1021/ja4080985] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Yunzhe Jiao
- Department
of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - James Morris
- Department
of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - William W. Brennessel
- Department
of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - William D. Jones
- Department
of Chemistry, University of Rochester, Rochester, New York 14627, United States
| |
Collapse
|
40
|
Jiao Y, Brennessel WW, Jones WD. A tris(pyrazolyl)borate rhodium phosphite complex that undergoes an Arbusov-like rearrangement. Acta Crystallogr C 2013; 69:939-42. [PMID: 24005495 DOI: 10.1107/s0108270113015953] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2013] [Accepted: 06/07/2013] [Indexed: 11/10/2022] Open
Abstract
Tp'Rh[P(OMe)3](Me)H, loses methane in pentane solution containing CH2F2 to give the scorpionate complex bis(μ-dimethyl phosphito)-κ(2)P:O;κ(2)O:P-bis{methyl[tris(3,5-dimethyl-1H-pyrazol-1-yl-κN(2))borato]rhodium(III)}, [Rh2(CH3)2(C2H6O3P)2(C15H22BN6)2], in which the phosphine O-Me bond is cleaved. The product is dimeric and resembles the Arbusov-type rearrangement product known to form from trimethyl phosphite.
Collapse
Affiliation(s)
- Yunzhe Jiao
- Department of Chemistry, University of Rochester, Rochester, NY 14627, USA
| | | | | |
Collapse
|
41
|
Yu RP, Darmon JM, Milsmann C, Margulieux GW, E. Stieber SC, DeBeer S, Chirik PJ. Catalytic hydrogenation activity and electronic structure determination of bis(arylimidazol-2-ylidene)pyridine cobalt alkyl and hydride complexes. J Am Chem Soc 2013; 135:13168-84. [PMID: 23968297 PMCID: PMC3799879 DOI: 10.1021/ja406608u] [Citation(s) in RCA: 166] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The bis(arylimidazol-2-ylidene)pyridine cobalt methyl complex, ((iPr)CNC)CoCH3, was evaluated for the catalytic hydrogenation of alkenes. At 22 °C and 4 atm of H2 pressure, ((iPr)CNC)CoCH3 is an effective precatalyst for the hydrogenation of sterically hindered, unactivated alkenes such as trans-methylstilbene, 1-methyl-1-cyclohexene, and 2,3-dimethyl-2-butene, representing one of the most active cobalt hydrogenation catalysts reported to date. Preparation of the cobalt hydride complex, ((iPr)CNC)CoH, was accomplished by hydrogenation of ((iPr)CNC)CoCH3. Over the course of 3 h at 22 °C, migration of the metal hydride to the 4-position of the pyridine ring yielded (4-H2-(iPr)CNC)CoN2. Similar alkyl migration was observed upon treatment of ((iPr)CNC)CoH with 1,1-diphenylethylene. This reactivity raised the question as to whether this class of chelate is redox-active, engaging in radical chemistry with the cobalt center. A combination of structural, spectroscopic, and computational studies was conducted and provided definitive evidence for bis(arylimidazol-2-ylidene)pyridine radicals in reduced cobalt chemistry. Spin density calculations established that the radicals were localized on the pyridine ring, accounting for the observed reactivity, and suggest that a wide family of pyridine-based pincers may also be redox-active.
Collapse
Affiliation(s)
- Renyuan Pony Yu
- Department of Chemistry, Princeton University, Princeton, New Jersey, U. S. A. 08544
| | - Jonathan M. Darmon
- Department of Chemistry, Princeton University, Princeton, New Jersey, U. S. A. 08544
| | - Carsten Milsmann
- Department of Chemistry, Princeton University, Princeton, New Jersey, U. S. A. 08544
| | - Grant W. Margulieux
- Department of Chemistry, Princeton University, Princeton, New Jersey, U. S. A. 08544
| | - S. Chantal E. Stieber
- Department of Chemistry, Princeton University, Princeton, New Jersey, U. S. A. 08544
| | - Serena DeBeer
- Max-Planck Institute for Chemical Energy Conversion, Stiftstrasse 34-36, D-45470 Mülheim an der Ruhr, Germany
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | | |
Collapse
|
42
|
Nelsen ER, Landis CR. Interception and Characterization of Alkyl and Acyl Complexes in Rhodium-Catalyzed Hydroformylation of Styrene. J Am Chem Soc 2013; 135:9636-9. [DOI: 10.1021/ja404799m] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Eleanor R. Nelsen
- Department of Chemistry, University of Wisconsin—Madison, 1101 University Avenue, Madison,
Wisconsin 53706, United States
| | - Clark R. Landis
- Department of Chemistry, University of Wisconsin—Madison, 1101 University Avenue, Madison,
Wisconsin 53706, United States
| |
Collapse
|
43
|
|