1
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Parker BF, Chatani N. Selective Nickel-Catalyzed Hydrodefluorination of Amides Using Sodium Borohydride. J Org Chem 2022; 87:9969-9976. [PMID: 35818824 DOI: 10.1021/acs.joc.2c00971] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Hydrodefluorination selective to the ortho position to amides is accomplished under mild conditions using sodium borohydride and a nickel catalyst. The facile formation of a nickelacycle intermediate with a specific geometry ensures selectivity without the need for electronic directing groups, and fluorine atoms in other positions remain intact. This method avoids the use of stoichiometric silanes which are typical for most other defluorination reactions, resulting in virtually no organic waste byproducts.
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Affiliation(s)
- Bernard F Parker
- 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
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2
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Regioselective Transfer Hydrogenative Defluorination of Polyfluoroarenes Catalyzed by Bifunctional Azairidacycle. ORGANICS 2022. [DOI: 10.3390/org3030012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The catalytic hydrodefluorination (HDF) with a bifunctional azairidacycle using HCOOK was examined for cyano- and chloro-substituted fluoroarenes, including penta- and tetrafluorobenzonitriles, tetrafluoroterephthalonitrile, tetrafluorophthalonitrile, 3-chloro-2,4,5,6-tetrafluoropyridine, and 4-cyano-2,3,5,6-tetrafluoropyridine. The reaction was performed in the presence of a controlled amount of HCOOK with a substrate/catalyst ratio (S/C) of 100 in a 1:1 mixture of 1,2-dimethoxyethane (DME) and H2O at an ambient temperature of 30 °C to obtain partially fluorinated compounds with satisfactory regioselectivities. The C–F bond cleavage proceeded favorably at the para position of substituents other than fluorine, which is in consonance with the nucleophilic aromatic substitution mechanism. In the HDF of tetrafluoroterephthalonitrile and 4-cyano-2,3,5,6-tetrafluoropyridine, which do not contain a fluorine atom at the para position of the cyano group, the double defluorination occurred solely at the 2- and 5-positions, as confirmed by X-ray crystallography. The HDF of 3-chloro-2,4,5,6-tetrafluoropyridine gave preference to the C–F bond cleavage over the C–Cl bond cleavage, unlike the dehalogenation pathway via electron-transfer radical anion fragmentation. In addition, new azairidacycles with an electron-donating methoxy substituent on the C–N chelating ligand were synthesized and served as a catalyst precursor (0.2 mol%) for the transfer hydrogenative defluorination of pentafluoropyridine, leading to 2,3,5,6-tetrafluoropyridine with up to a turnover number (TON) of 418.
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3
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Noel AM, Hamilton M, Keen B, Despain M, Day J, Weaver JD. A Selective Single Step Amidation of Polyfluoroarenes. J Fluor Chem 2022; 248. [PMID: 35027775 DOI: 10.1016/j.jfluchem.2021.109821] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
This chemistry establishes a method for the synthesis of per- and poly-fluoroaryl acid amides, utilizing nucleophilic aromatic substitution. Traditionally, such amides are constructed in a two-step process, namely, ammonolysis and then N-acylation. Herein, good yields of N-polyfluoroaryl acid amides were achieved in a single step under mild reaction conditions. Key to achieving optimal yields is the use of two equivalents of the nucleophile. In addition, the mechanism of the reaction is discussed which has implications for other related nucleophilic substitutions.
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Affiliation(s)
| | | | | | | | - Jon Day
- Department of Chemistry, Oklahoma State University
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4
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Das A, Chatani N. The Directing Group: A Tool for Efficient and Selective C–F Bond Activation. ACS Catal 2021. [DOI: 10.1021/acscatal.1c03896] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Amrita Das
- 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
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5
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García‐Ramos M, Cuetos A, Kroutil W, Grogan G, Lavandera I. The Reactivity of α‐Fluoroketones with PLP Dependent Enzymes: Transaminases as Hydrodefluorinases. ChemCatChem 2021. [DOI: 10.1002/cctc.202100901] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Marina García‐Ramos
- Organic and Inorganic Chemistry Department University of Oviedo Avenida Julián Clavería 8 33006 Oviedo Spain
| | - Aníbal Cuetos
- York Structural Biology Laboratory Department of Chemistry University of York Heslington York YO10 5DD UK
- ENANTIA C/ Baldiri Reixac, 10 08028 Barcelona Spain
| | - Wolfgang Kroutil
- Institute of Chemistry NAWI Graz Field of Excellence BioHealth University of Graz Heinrichstrasse 28 8010 Graz Austria
| | - Gideon Grogan
- York Structural Biology Laboratory Department of Chemistry University of York Heslington York YO10 5DD UK
| | - Iván Lavandera
- Organic and Inorganic Chemistry Department University of Oviedo Avenida Julián Clavería 8 33006 Oviedo Spain
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6
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Schoch TD, Mondal M, Weaver JD. Catalyst-Free Hydrodefluorination of Perfluoroarenes with NaBH 4. Org Lett 2021; 23:1588-1593. [PMID: 33587637 DOI: 10.1021/acs.orglett.0c04305] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Presented is an economical means of removing fluorine from various highly fluorinated arenes using NaBH4. The procedure was adapted for different classes of perfluoroarenes. A novel isomer of an emerging class of organic dyes based on the carbazole phthalonitrile motif was succinctly synthesized in two steps from tetrafluorophthalonitrile, demonstrating the utility of the hydrodefluorination procedure. Initial exploration of the dye shows it to be photoactive and capable of facilitating contrathermodynamic styrenoid E/Z isomerization.
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Affiliation(s)
- Timothy D Schoch
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078, United States
| | - Mukulesh Mondal
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078, United States
| | - Jimmie D Weaver
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078, United States
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7
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Kashiwame Y, Ikariya T, Kuwata S. Synthesis, structures, and reactivities of six-membered C N chelate protic pyrazole complexes of iridium. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115036] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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8
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Sato Y, Kawata Y, Yasui S, Kayaki Y, Ikariya T. New Bifunctional Bis(azairidacycle) with Axial Chirality via Double Cyclometalation of 2,2'-Bis(aminomethyl)-1,1'-binaphthyl. Molecules 2021; 26:molecules26041165. [PMID: 33671758 PMCID: PMC7926664 DOI: 10.3390/molecules26041165] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 02/16/2021] [Accepted: 02/18/2021] [Indexed: 11/21/2022] Open
Abstract
As a candidate for bifunctional asymmetric catalysts containing a half-sandwich C–N chelating Ir(III) framework (azairidacycle), a dinuclear Ir complex with an axially chiral linkage is newly designed. An expedient synthesis of chiral 2,2′-bis(aminomethyl)-1,1′-binaphthyl (1) from 1,1-bi-2-naphthol (BINOL) was accomplished by a three-step process involving nickel-catalyzed cyanation and subsequent reduction with Raney-Ni and KBH4. The reaction of (S)-1 with an equimolar amount of [IrCl2Cp*]2 (Cp* = η5–C5(CH3)5) in the presence of sodium acetate in acetonitrile at 80 °C gave a diastereomeric mixture of new dinuclear dichloridodiiridium complexes (5) through the double C–H bond cleavage, as confirmed by 1H NMR spectroscopy. A loss of the central chirality on the Ir centers of 5 was demonstrated by treatment with KOC(CH3)3 to generate the corresponding 16e amidoiridium complex 6. The following hydrogen transfer from 2-propanol to 6 provided diastereomers of hydrido(amine)iridium retaining the bis(azairidacycle) architecture. The dinuclear chlorido(amine)iridium 5 can serve as a catalyst precursor for the asymmetric transfer hydrogenation of acetophenone with a substrate to a catalyst ratio of 200 in the presence of KOC(CH3)3 in 2-propanol, leading to (S)-1-phenylethanol with up to an enantiomeric excess (ee) of 67%.
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Affiliation(s)
- Yasuhiro Sato
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1-E4-1 O-okayama, Meguro-ku, Tokyo 152-8552, Japan; (Y.S.); (Y.K.); (S.Y.)
- Hazardous Materials Laboratory, Research and Development Division, National Research Institute of Fire and Disaster, Jindaiji-higashimachi 4-35-3, Chofu, Tokyo 182-8508, Japan
| | - Yuichi Kawata
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1-E4-1 O-okayama, Meguro-ku, Tokyo 152-8552, Japan; (Y.S.); (Y.K.); (S.Y.)
| | - Shungo Yasui
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1-E4-1 O-okayama, Meguro-ku, Tokyo 152-8552, Japan; (Y.S.); (Y.K.); (S.Y.)
| | - Yoshihito Kayaki
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1-E4-1 O-okayama, Meguro-ku, Tokyo 152-8552, Japan; (Y.S.); (Y.K.); (S.Y.)
- Correspondence: ; Tel.: +81-3-5734-2881
| | - Takao Ikariya
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1-E4-1 O-okayama, Meguro-ku, Tokyo 152-8552, Japan; (Y.S.); (Y.K.); (S.Y.)
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9
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Fang H, He Q, Liu G, Huang Z. Ruthenium-Catalyzed Hydrodefluorination with Silane as the Directing and Reducing Group. Org Lett 2020; 22:9298-9302. [PMID: 33226823 DOI: 10.1021/acs.orglett.0c03530] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We describe herein an efficient and selective Ru-catalyzed intramolecular HDF directed by a silyl group, which is readily installed, and removable and transformable following the HDF reaction. The hydrosilyl group in polyfluoroaryl silane acts not only as the directing group but also as the internal reductant, enabling precise control of the ortho-selectivity and avoiding overdefluorination. Mechanistic studies reveal a plausible catalytic cycle involving a Ru(IV)-aryne intermediate.
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Affiliation(s)
- Huaquan Fang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Qiaoxing He
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China.,School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Guixia Liu
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China.,Chang-Kung Chuang Institute, East China Normal University, Shanghai 200062, China
| | - Zheng Huang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China.,School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China.,School of Chemistry and Material Sciences, Hangzhou Institute of Advanced Study, University of Chinese Academy of Sciences, 1 Sub-lane Xiangshan, Hangzhou 310024, China
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10
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Dhital RN, Nomura K, Sato Y, Haesuwannakij S, Ehara M, Sakurai H. Pt-Pd Nanoalloy for the Unprecedented Activation of Carbon-Fluorine Bond at Low Temperature. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2020. [DOI: 10.1246/bcsj.20200112] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Raghu Nath Dhital
- Division of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Keigo Nomura
- Division of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Yoshinori Sato
- Graduate School of Environmental Studies, Tohoku University, Aoba 6-6-20, Aramaki, Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Setsiri Haesuwannakij
- Division of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
- School of Molecular Science & Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), 555 Moo 1 Payupnai, Wangchan, Rayong 21210, Thailand
| | - Masahiro Ehara
- Institute for Molecular Science Okazaki, Aichi 444-8787, Japan
| | - Hidehiro Sakurai
- Division of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
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11
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Xia PJ, Hu YZ, Ye ZP, Li XJ, Xiang HY, Yang H. O-Perfluoropyridin-4-yl Oximes: Iminyl Radical Precursors for Photo- or Thermal-Induced N-O Cleavage in C(sp 2)-C(sp 3) Bond Formation. J Org Chem 2020; 85:3538-3547. [PMID: 31971800 DOI: 10.1021/acs.joc.9b03251] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
O-Perfluoropyridin-4-yl group was first installed onto cycloketone oximes as a new electrophore, which was proven to be efficient iminyl radical precursors under photocatalytic and thermal conditions. A range of O-perfluoropyridin-4-yl oximes were successfully utilized in C(sp2)-C(sp3) bond formations of quinoxalin-2(1H)-ones and alkenes, providing facile accesses to a range of functionalized alkylnitriles.
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Affiliation(s)
- Peng-Ju Xia
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Yuan-Zhuo Hu
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Zhi-Peng Ye
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Xu-Jie Li
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Hao-Yue Xiang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Hua Yang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China.,Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, Central South University, Changsha 410083, P. R. China
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12
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Kacem S, Emondts M, Bordet A, Leitner W. Selective hydrogenation of fluorinated arenes using rhodium nanoparticles on molecularly modified silica. Catal Sci Technol 2020. [DOI: 10.1039/d0cy01716g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Rh nanoparticles prepared on hydrophobic molecularly modified silica act as effective catalysts for the hydrogenation of fluoroarenes to fluorocyclohexane derivatives.
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Affiliation(s)
- Souha Kacem
- Max Planck Institute for Chemical Energy Conversion
- 45470 Mülheim an der Ruhr
- Germany
- Institut für Technische und Makromolekulare Chemie
- RWTH Aachen University
| | - Meike Emondts
- Institut für Technische und Makromolekulare Chemie
- RWTH Aachen University
- 52074 Aachen
- Germany
- DWI-Leibniz Institute for Interactive Materials
| | - Alexis Bordet
- Max Planck Institute for Chemical Energy Conversion
- 45470 Mülheim an der Ruhr
- Germany
| | - Walter Leitner
- Max Planck Institute for Chemical Energy Conversion
- 45470 Mülheim an der Ruhr
- Germany
- Institut für Technische und Makromolekulare Chemie
- RWTH Aachen University
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13
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Sato Y, Kayaki Y, Ikariya T. Transfer hydrogenation of carbon dioxide via bicarbonate promoted by bifunctional C-N chelating Cp*Ir complexes. Chem Commun (Camb) 2020; 56:10762-10765. [PMID: 32789388 DOI: 10.1039/d0cc04379f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Metal-ligand cooperative Cp*Ir(iii) complexes derived from primary benzylic amines effectively promote transfer hydrogenation of atmospheric CO2 using 2-propanol at 80 °C. Isotope-labelling experiments strengthen that active Ir species can preferentially reduce bicarbonate congeners formed from CO2. The powerful transfer hydrogenation catalyst exhibits remarkable activity for the conversion of bicarbonates into formate salts with a turnover number up to 3200, even without H2 and CO2.
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Affiliation(s)
- Yasuhiro Sato
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1-E4-1 O-okayama, Meguro-ku, Tokyo 152-8552, Japan.
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14
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Andrella NO, Xu N, Gabidullin BM, Ehm C, Baker RT. Selective Copper Complex-Catalyzed Hydrodefluorination of Fluoroalkenes and Allyl Fluorides: A Tale of Two Mechanisms. J Am Chem Soc 2019; 141:11506-11521. [PMID: 31305996 DOI: 10.1021/jacs.9b03101] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The transition to more economically friendly small-chain fluorinated groups is leading to a resurgence in the synthesis and reactivity of fluoroalkenes. One versatile method to obtain a variety of commercially relevant hydrofluoroalkenes involves the catalytic hydrodefluorination (HDF) of fluoroalkenes using silanes. In this work it is shown that copper hydride complexes of tertiary phosphorus ligands (L) can be tuned to achieve selective multiple HDF of fluoroalkenes. In one example, HDF of the hexafluoropropene dimer affords a single isomer of heptafluoro-2-methylpentene in which five fluorines have been selectively replaced with hydrogens. DFT computational studies suggest a distinct HDF mechanisms for L2CuH (bidentate or bulky monodentate phosphines) and L3CuH (small cone angle monodentate phosphines) catalysts, allowing for stereocontrol of the HDF of trifluoroethylene.
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Affiliation(s)
- Nicholas O Andrella
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation , 30 Marie Curie , University of Ottawa , Ottawa , ON K1N 6N5 Canada
| | - Nancy Xu
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation , 30 Marie Curie , University of Ottawa , Ottawa , ON K1N 6N5 Canada
| | - Bulat M Gabidullin
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation , 30 Marie Curie , University of Ottawa , Ottawa , ON K1N 6N5 Canada
| | - Christian Ehm
- Dipartimento di Scienze Chimiche , Università di Napoli Federico II , Via Cintia 80126 Napoli , Italy
| | - R Tom Baker
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation , 30 Marie Curie , University of Ottawa , Ottawa , ON K1N 6N5 Canada
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15
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Gair JJ, Grey RL, Giroux S, Brodney MA. Palladium Catalyzed Hydrodefluorination of Fluoro-(hetero)arenes. Org Lett 2019; 21:2482-2487. [DOI: 10.1021/acs.orglett.9b00889] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Joseph J. Gair
- Vertex Pharmaceuticals Inc, 50 Northern Avenue, Boston, Massachusetts 02210, United States
| | - Ronald L. Grey
- Vertex Pharmaceuticals Inc, 50 Northern Avenue, Boston, Massachusetts 02210, United States
| | - Simon Giroux
- Vertex Pharmaceuticals Inc, 50 Northern Avenue, Boston, Massachusetts 02210, United States
| | - Michael A. Brodney
- Vertex Pharmaceuticals Inc, 50 Northern Avenue, Boston, Massachusetts 02210, United States
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16
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Facundo AA, Arévalo A, Fundora-Galano G, Flores-Álamo M, Orgaz E, García JJ. Hydrodefluorination of functionalized fluoroaromatics with triethylphosphine: a theoretical and experimental study. NEW J CHEM 2019. [DOI: 10.1039/c9nj00721k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new mechanistic proposal based in theoretical and experimental evidence invoking the participation of water is presented.
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Affiliation(s)
- Aldo A. Facundo
- Facultad de Química
- Universidad Nacional Autónoma de México
- Circuito Interior
- Ciudad Universitaria
- México City 04510
| | - Alma Arévalo
- Facultad de Química
- Universidad Nacional Autónoma de México
- Circuito Interior
- Ciudad Universitaria
- México City 04510
| | - Gabriela Fundora-Galano
- Facultad de Química
- Universidad Nacional Autónoma de México
- Circuito Interior
- Ciudad Universitaria
- México City 04510
| | - Marcos Flores-Álamo
- Facultad de Química
- Universidad Nacional Autónoma de México
- Circuito Interior
- Ciudad Universitaria
- México City 04510
| | - Emilio Orgaz
- Facultad de Química
- Universidad Nacional Autónoma de México
- Circuito Interior
- Ciudad Universitaria
- México City 04510
| | - Juventino J. García
- Facultad de Química
- Universidad Nacional Autónoma de México
- Circuito Interior
- Ciudad Universitaria
- México City 04510
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17
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Binh DH, Hamdaoui M, Fischer-Krauser D, Karmazin L, Bailly C, Djukic JP. Entrapment of THF-Stabilized Iridacyclic Ir III Silylenes from Double H-Si Bond Activation and H 2 Elimination. Chemistry 2018; 24:17577-17589. [PMID: 30222217 DOI: 10.1002/chem.201804048] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Indexed: 01/08/2023]
Abstract
The reaction of H3 SiR (R=Ph, nBu) with cationic η5 -C5 Me5 - (Cp*) and benzo[h]quinolinyl-based iridacycle [1 b]+ gives rise to new [(IrH)→SiRH2 ]+ adducts. In the presence of THF these adducts readily undergo elimination of H2 gas at subambient temperature to form THF-stabilized metallacyclic IrIII silylene complexes, which were characterized in situ by NMR spectroscopy, trapped in minute amounts by reactive crystallization, and structurally characterized by XRD. Theoretical investigations (static DFT-D reaction-energy profiling, ETS-NOCV) support the promoting role of THF in the H2 elimination step and the consolidation of the Ir-to-Si interaction in the spontaneous (ΔG<0) formation of Ir silylenes in the presence of THF. Mechanistic insights indicate that the Ir silylene species arising from the [1 b]+ /phenylsilane system are relevant catalytic species in the hydrodefluorination of fluoroalkanes.
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Affiliation(s)
- Dang Ho Binh
- Institut de Chimie de Strasbourg UMR 7177, CNRS-Université de Strasbourg, 4 rue Blaise Pascal, 67000, Strasbourg, France
| | - Mustapha Hamdaoui
- Institut de Chimie de Strasbourg UMR 7177, CNRS-Université de Strasbourg, 4 rue Blaise Pascal, 67000, Strasbourg, France
| | - Diane Fischer-Krauser
- Institut de Chimie de Strasbourg UMR 7177, CNRS-Université de Strasbourg, 4 rue Blaise Pascal, 67000, Strasbourg, France
| | - Lydia Karmazin
- Institut de Chimie de Strasbourg UMR 7177, CNRS-Université de Strasbourg, 4 rue Blaise Pascal, 67000, Strasbourg, France
| | - Corinne Bailly
- Institut de Chimie de Strasbourg UMR 7177, CNRS-Université de Strasbourg, 4 rue Blaise Pascal, 67000, Strasbourg, France
| | - Jean-Pierre Djukic
- Institut de Chimie de Strasbourg UMR 7177, CNRS-Université de Strasbourg, 4 rue Blaise Pascal, 67000, Strasbourg, France
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18
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Yamamoto N, Sato Y, Kayaki Y, Ikariya T. Synthesis and Reactivity of Cp*Ir III Complexes with a C–S Chelate Displaying Metal/Sulfur Bifunctionality. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00562] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Naoki Yamamoto
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama 2-12-1-E4-1, Meguro-ku, Tokyo 152-8552, Japan
| | - Yasuhiro Sato
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama 2-12-1-E4-1, Meguro-ku, Tokyo 152-8552, Japan
- Hazardous Materials Laboratory, Research and Development Division, National Research Institute of Fire and Disaster, Jindaiji-higashimachi 4-35-3, Chofu, Tokyo 182-8508, Japan
| | - Yoshihito Kayaki
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama 2-12-1-E4-1, Meguro-ku, Tokyo 152-8552, Japan
| | - Takao Ikariya
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama 2-12-1-E4-1, Meguro-ku, Tokyo 152-8552, Japan
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19
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Zhou G, Aboo AH, Robertson CM, Liu R, Li Z, Luzyanin K, Berry NG, Chen W, Xiao J. N,O- vs N,C-Chelation in Half-Sandwich Iridium Complexes: A Dramatic Effect on Enantioselectivity in Asymmetric Transfer Hydrogenation of Ketones. ACS Catal 2018. [DOI: 10.1021/acscatal.8b02068] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Gang Zhou
- School of Pharmacy, Fourth Military Medical University, Xi’an, 710032, China
- Department of Chemistry, University of Liverpool, Liverpool, L69 7ZD, United Kingdom
| | - Ahmed H. Aboo
- Department of Chemistry, University of Liverpool, Liverpool, L69 7ZD, United Kingdom
| | - Craig M. Robertson
- Department of Chemistry, University of Liverpool, Liverpool, L69 7ZD, United Kingdom
| | - Ruixia Liu
- School of Pharmacy, Fourth Military Medical University, Xi’an, 710032, China
| | - Zhenhua Li
- Department of Chemistry, Fudan University, Shanghai, 200438, China
| | - Konstantin Luzyanin
- Department of Chemistry, University of Liverpool, Liverpool, L69 7ZD, United Kingdom
| | - Neil G. Berry
- Department of Chemistry, University of Liverpool, Liverpool, L69 7ZD, United Kingdom
| | - Weiping Chen
- School of Pharmacy, Fourth Military Medical University, Xi’an, 710032, China
| | - Jianliang Xiao
- Department of Chemistry, University of Liverpool, Liverpool, L69 7ZD, United Kingdom
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20
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Matsunami A, Kayaki Y, Kuwata S, Ikariya T. Nucleophilic Aromatic Substitution in Hydrodefluorination Exemplified by Hydridoiridium(III) Complexes with Fluorinated Phenylsulfonyl-1,2-diphenylethylenediamine Ligands. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00242] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Asuka Matsunami
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama 2-12-1-E4-1, Meguro-ku, Tokyo 152-8552, Japan
| | - Yoshihito Kayaki
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama 2-12-1-E4-1, Meguro-ku, Tokyo 152-8552, Japan
| | - Shigeki Kuwata
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama 2-12-1-E4-1, Meguro-ku, Tokyo 152-8552, Japan
- PRESTO, Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Takao Ikariya
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama 2-12-1-E4-1, Meguro-ku, Tokyo 152-8552, Japan
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21
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Matsunami A, Kayaki Y. Upgrading and expanding the scope of homogeneous transfer hydrogenation. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2017.12.078] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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22
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Matsunami A, Kuwata S, Kayaki Y. Hydrogen Evolution from Formic Acid and Hydrodefluorination of Fluoroarenes by Bifunctional Iridium Catalysts—Beyond the Transfer Hydrogenation. J SYN ORG CHEM JPN 2018. [DOI: 10.5059/yukigoseikyokaishi.76.315] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Asuka Matsunami
- College of Science and Engineering, Aoyama Gakuin University
| | - Shigeki Kuwata
- School of Materials and Chemical Technology, Tokyo Institute of Technology
- PRESTO, Japan Science and Technology Agency (JST)
| | - Yoshihito Kayaki
- School of Materials and Chemical Technology, Tokyo Institute of Technology
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23
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Chen HJ, Hong Xiang Teo R, Li Y, Pullarkat SA, Leung PH. Stereogenic Lock in 1-Naphthylethanamine Complexes for Catalyst and Auxiliary Design: Structural and Reactivity Analysis for Cycloiridated Pseudotetrahedral Complexes. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00760] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Houguang Jeremy Chen
- Division of Chemistry and Biological
Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Ronald Hong Xiang Teo
- Division of Chemistry and Biological
Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Yongxin Li
- Division of Chemistry and Biological
Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Sumod A. Pullarkat
- Division of Chemistry and Biological
Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Pak-Hing Leung
- Division of Chemistry and Biological
Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
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24
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Hein NM, Pick FS, Fryzuk MD. Synthesis and Reactivity of a Low-Coordinate Iron(II) Hydride Complex: Applications in Catalytic Hydrodefluorination. Inorg Chem 2017; 56:14513-14523. [DOI: 10.1021/acs.inorgchem.7b02199] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Nicholas M. Hein
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Fraser S. Pick
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Michael D. Fryzuk
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
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25
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Cybulski MK, Nicholls JE, Lowe JP, Mahon MF, Whittlesey MK. Catalytic Hydrodefluorination of Fluoroarenes Using Ru(IMe4)2L2H2 (IMe4 = 1,3,4,5-Tetramethylimidazol-2-ylidene; L2 = (PPh3)2, dppe, dppp, dppm) Complexes. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00243] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mateusz K. Cybulski
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K
| | - Jessica E. Nicholls
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K
| | - John P. Lowe
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K
| | - Mary F. Mahon
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K
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26
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Cybulski MK, McKay D, Macgregor SA, Mahon MF, Whittlesey MK. Room Temperature Regioselective Catalytic Hydrodefluorination of Fluoroarenes with
trans
‐[Ru(NHC)
4
H
2
] through a Concerted Nucleophilic Ru−H Attack Pathway. Angew Chem Int Ed Engl 2017; 56:1515-1519. [DOI: 10.1002/anie.201610820] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2016] [Revised: 12/11/2016] [Indexed: 11/09/2022]
Affiliation(s)
| | - David McKay
- Institute of Chemical SciencesHeriot Watt University Edinburgh EH14 4AS UK
| | | | - Mary F. Mahon
- Department of ChemistryUniversity of Bath Claverton Down Bath BA2 7AY UK
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27
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Cybulski MK, McKay D, Macgregor SA, Mahon MF, Whittlesey MK. Room Temperature Regioselective Catalytic Hydrodefluorination of Fluoroarenes withtrans-[Ru(NHC)4H2] through a Concerted Nucleophilic Ru−H Attack Pathway. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201610820] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - David McKay
- Institute of Chemical Sciences; Heriot Watt University; Edinburgh EH14 4AS UK
| | - Stuart A. Macgregor
- Institute of Chemical Sciences; Heriot Watt University; Edinburgh EH14 4AS UK
| | - Mary F. Mahon
- Department of Chemistry; University of Bath; Claverton Down Bath BA2 7AY UK
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28
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Kojima R, Kubota K, Ito H. Stereodivergent hydrodefluorination of gem-difluoroalkenes: selective synthesis of (Z)- and (E)-monofluoroalkenes. Chem Commun (Camb) 2017; 53:10688-10691. [DOI: 10.1039/c7cc05225a] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We have developed a novel approach for the stereodivergent hydrodefluorination of gem-difluoroalkenes using copper(i) catalysts to obtain stereodefined monofluoroalkenes. Both (Z)- and (E)-terminal monofluoroalkenes were obtained by hydrodefluorination of gem-difluoroalkenes in the presence of copper(i) catalysts and diboron or hydrosilane, respectively, with high stereoselectivity. DFT calculations were conducted to elucidate the stereoselectivity.
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Affiliation(s)
- Ryoto Kojima
- Division of Applied Chemistry and Frontier Chemistry Center
- Graduate School of Engineering
- Hokkaido University
- Sapporo 060-8628
- Japan
| | - Koji Kubota
- Division of Applied Chemistry and Frontier Chemistry Center
- Graduate School of Engineering
- Hokkaido University
- Sapporo 060-8628
- Japan
| | - Hajime Ito
- Division of Applied Chemistry and Frontier Chemistry Center
- Graduate School of Engineering
- Hokkaido University
- Sapporo 060-8628
- Japan
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29
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Mai VH, Nikonov GI. Hydrodefluorination of Fluoroaromatics by Isopropyl Alcohol Catalyzed by a Ruthenium NHC Complex. An Unusual Role of the Carbene Ligand. ACS Catal 2016. [DOI: 10.1021/acscatal.6b02004] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Van Hung Mai
- Department of Chemistry, Brock University, Niagara
Region, 1812 Sir Isaac Brock Way, St. Catharines, Ontario L2S 3A1, Canada
| | - Georgii I. Nikonov
- Department of Chemistry, Brock University, Niagara
Region, 1812 Sir Isaac Brock Way, St. Catharines, Ontario L2S 3A1, Canada
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30
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Sato Y, Kayaki Y, Ikariya T. Comparative Study of Bifunctional Mononuclear and Dinuclear Amidoiridium Complexes with Chiral C-N Chelating Ligands for the Asymmetric Transfer Hydrogenation of Ketones. Chem Asian J 2016; 11:2924-2931. [PMID: 27480392 DOI: 10.1002/asia.201600955] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Indexed: 11/08/2022]
Abstract
A series of new bifunctional C-N chelating Ir complexes possessing a metal/NH group was synthesized by cyclometalation of optically active primary benzylic amines such as O-silylated (S)-2-amino-2-phenylethanols (1 a and 1 a'), (R)-5-amino-6,7,8,9-tetrahydro-5H-benzocycloheptene (1 b), and (R)-1-phenyl-2,2-dimethylpropylamine (1 c). Although treatment of KOtBu with the amine complexes originating from 1 a and 1 a' afforded amido-bridged dinuclear complexes (3 a and 3 a'), more sterically hindered complexes were solely transformed into the coordinatively unsaturated mononuclear amido complexes (3 b and 3 c), which can serve as real catalyst species in the asymmetric transfer hydrogenation. The structural difference in the C-N chelate framework markedly affected the catalytic performance. Among them, amido complex 3 c showed a pronounced ability to catalyze the transfer hydrogenation of acetophenone in 2-propanol, even at a low temperature of -30 °C. A hydridoiridium complex (4 c) was also identified in the reaction of 3 c in 2-propanol, which provides mechanistic insights into the enantiodiscriminating step in the hydrogen transfer to prochiral ketones.
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Affiliation(s)
- Yasuhiro Sato
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1-E4-1 O-okayama, Meguro-ku, Tokyo, 152-8552, Japan
| | - Yoshihito Kayaki
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1-E4-1 O-okayama, Meguro-ku, Tokyo, 152-8552, Japan.
| | - Takao Ikariya
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1-E4-1 O-okayama, Meguro-ku, Tokyo, 152-8552, Japan.
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31
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Ahrens T, Teltewskoi M, Ahrens M, Braun T, Laubenstein R. Competing reaction pathways of 3,3,3-trifluoropropene at rhodium hydrido, silyl and germyl complexes: C–F bond activation versus hydrogermylation. Dalton Trans 2016; 45:17495-17507. [DOI: 10.1039/c6dt03027k] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reactivity of the Rh complexes [Rh(L)(PEt3)3] (L = H, Si(OEt)3, GePh3) towards CH2CHCF3 was investigated which involve C–F bond activation and germylation reactions.
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Affiliation(s)
- Theresia Ahrens
- Humboldt-Universität zu Berlin
- Department of Chemistry
- D-12489 Berlin
- Germany
| | - Michael Teltewskoi
- Humboldt-Universität zu Berlin
- Department of Chemistry
- D-12489 Berlin
- Germany
| | - Mike Ahrens
- Humboldt-Universität zu Berlin
- Department of Chemistry
- D-12489 Berlin
- Germany
| | - Thomas Braun
- Humboldt-Universität zu Berlin
- Department of Chemistry
- D-12489 Berlin
- Germany
| | - Reik Laubenstein
- Humboldt-Universität zu Berlin
- Department of Chemistry
- D-12489 Berlin
- Germany
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