151
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Paterson AJ, Heron CJ, McMullin CL, Mahon MF, Press NJ, Frost CG. α-Halo carbonyls enable meta selective primary, secondary and tertiary C–H alkylations by ruthenium catalysis. Org Biomol Chem 2017; 15:5993-6000. [DOI: 10.1039/c7ob01192j] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A catalytic meta selective C–H alkylation of arenes is described using a wide range of α-halo carbonyls as coupling partners.
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Affiliation(s)
- Andrew J. Paterson
- Department of Chemistry
- University of Bath
- Bath
- UK
- Centre for Sustainable Chemical Technologies
| | - Callum J. Heron
- Department of Chemistry
- University of Bath
- Bath
- UK
- Centre for Sustainable Chemical Technologies
| | | | | | - Neil J. Press
- Novartis Institutes for BioMedical Research
- Basel
- Switzerland
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152
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Riedl CA, Flocke LS, Hejl M, Roller A, Klose MHM, Jakupec MA, Kandioller W, Keppler BK. Introducing the 4-Phenyl-1,2,3-Triazole Moiety as a Versatile Scaffold for the Development of Cytotoxic Ruthenium(II) and Osmium(II) Arene Cyclometalates. Inorg Chem 2016; 56:528-541. [PMID: 27996251 DOI: 10.1021/acs.inorgchem.6b02430] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Herein we report the synthesis, anticancer potency in vitro, biomolecule interaction, and preliminary mode of action studies of a series of cyclometalated 1,2,3-triazole-derived ruthenium(II) (2a-e) and osmium(II) (3a-e) organometallics of the general form [(η6-p-cym)RuCl(κ2-C^N-L)] with varying substituents in postion 1 of the 1,2,3-triazole moiety. These cyclometalates were characterized by standard analytical methods and their structures unambiguously assigned by single crystal X-ray crystallography. The anticancer activity of these novel compounds was tested in the human tumor cell lines A549 (non-small cell lung cancer), SW480 (colon adenocarcinoma), and CH1/PA-1 (ovarian teratocarcinoma), and preliminary structure-activity relationships were derived from the obtained data sets. Various representatives exhibit promising antineoplastic effects with IC50 values down to the low micromolar range. The compounds readily formed stable DMSO adducts after aquation in DMSO-containing solution, but employing DMSO as solubilizer in cytotoxicity assays had no pronounced effect on the cytotoxicity, compared to analogous experiments with DMF for most compounds. We isolated and characterized selected DMSO adducts as triflate salts and found that they show activities in the same range as the parent chlorido metalacycles in MTT assays with the use of DMSO. Osmium(II) cyclometalates exhibited higher antiproliferative activities than their ruthenium(II) counterparts. The IC50 values within each metal series decreased with increasing lipophilicity, which was attributed to higher cellular accumulation. Investigations on their mode of action revealed that the prepared organometallics were unable to inhibit topoisomerase IIα. Still, the most cytotoxic representatives 2b and 3b showed pronounced effects on cell cycle distribution.
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Affiliation(s)
- Christoph A Riedl
- Institute of Inorganic Chemistry, Faculty of Chemistry, and ‡Research Platform "Translational Cancer Therapy Research", University of Vienna , Waehringer Strasse 42, 1090 Vienna, Austria
| | - Lea S Flocke
- Institute of Inorganic Chemistry, Faculty of Chemistry, and ‡Research Platform "Translational Cancer Therapy Research", University of Vienna , Waehringer Strasse 42, 1090 Vienna, Austria
| | - Michaela Hejl
- Institute of Inorganic Chemistry, Faculty of Chemistry, and ‡Research Platform "Translational Cancer Therapy Research", University of Vienna , Waehringer Strasse 42, 1090 Vienna, Austria
| | - Alexander Roller
- Institute of Inorganic Chemistry, Faculty of Chemistry, and ‡Research Platform "Translational Cancer Therapy Research", University of Vienna , Waehringer Strasse 42, 1090 Vienna, Austria
| | - Matthias H M Klose
- Institute of Inorganic Chemistry, Faculty of Chemistry, and ‡Research Platform "Translational Cancer Therapy Research", University of Vienna , Waehringer Strasse 42, 1090 Vienna, Austria
| | - Michael A Jakupec
- Institute of Inorganic Chemistry, Faculty of Chemistry, and ‡Research Platform "Translational Cancer Therapy Research", University of Vienna , Waehringer Strasse 42, 1090 Vienna, Austria
| | - Wolfgang Kandioller
- Institute of Inorganic Chemistry, Faculty of Chemistry, and ‡Research Platform "Translational Cancer Therapy Research", University of Vienna , Waehringer Strasse 42, 1090 Vienna, Austria
| | - Bernhard K Keppler
- Institute of Inorganic Chemistry, Faculty of Chemistry, and ‡Research Platform "Translational Cancer Therapy Research", University of Vienna , Waehringer Strasse 42, 1090 Vienna, Austria
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153
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Shankar M, Ghosh K, Mukherjee K, Rit RK, Sahoo AK. Ru-Catalyzed One-Pot Diannulation of Heteroaryls: Direct Access to π-Conjugated Polycyclic Amides. Org Lett 2016; 18:6416-6419. [PMID: 27978646 DOI: 10.1021/acs.orglett.6b03314] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A novel Ru-catalyzed oxidative double annulation of heteroarenes with symmetrical and unsymmetrical alkynes is reported. A general method for the unsymmetrical annulation of heteroarenes with two distinct alkynes is showcased for the first time. Methylphenyl sulfoximine (MPS) plays an important role in the annulations of heteroarenes and allows the construction of structurally complex π-conjugated heteroarene-fused polycyclic amide skeletons via the formation of multiple C-C and C-N bonds in a single operation. The reaction exhibits excellent substrate scope and tolerates a wide range of functional groups.
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Affiliation(s)
- Majji Shankar
- School of Chemistry, University of Hyderabad , Hyderabad-500046, India
| | - Koushik Ghosh
- School of Chemistry, University of Hyderabad , Hyderabad-500046, India
| | - Kallol Mukherjee
- School of Chemistry, University of Hyderabad , Hyderabad-500046, India
| | - Raja K Rit
- School of Chemistry, University of Hyderabad , Hyderabad-500046, India
| | - Akhila K Sahoo
- School of Chemistry, University of Hyderabad , Hyderabad-500046, India
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154
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Lopez MJ, Kondo A, Nagae H, Yamamoto K, Tsurugi H, Mashima K. C(sp3)–H Alkenylation Catalyzed by Cationic Alkylhafnium Complexes: Stereoselective Synthesis of Trisubstituted Alkenes from 2,6-Dimethylpyridines and Internal Alkynes. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00655] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Michael J. Lopez
- Department of Chemistry,
Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka, 560-8531, Japan
| | - Ai Kondo
- Department of Chemistry,
Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka, 560-8531, Japan
| | - Haruki Nagae
- Department of Chemistry,
Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka, 560-8531, Japan
| | - Koji Yamamoto
- Department of Chemistry,
Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka, 560-8531, Japan
| | - Hayato Tsurugi
- Department of Chemistry,
Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka, 560-8531, Japan
| | - Kazushi Mashima
- Department of Chemistry,
Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka, 560-8531, Japan
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155
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Huang L, Weix DJ. Ruthenium-Catalyzed C-H Arylation of Diverse Aryl Carboxylic Acids with Aryl and Heteroaryl Halides. Org Lett 2016; 18:5432-5435. [PMID: 27736085 PMCID: PMC5079292 DOI: 10.1021/acs.orglett.6b02862] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
Ruthenium ligated
to tricyclohexylphosphine or di-tert-butylbipyridine
catalyzes the arylation of carboxylic acids with
diverse aryl halides (iodide, bromide, and triflate; aryl and heteroaryl).
In addition, arylations with 2-iodophenol formed benzochromenones,
carboxylate was shown to be a stronger donor than an amide, and the
arylation of a pyridine carboxylate was demonstrated. Stoichiometric
studies demonstrated that the added ligand is required for reaction
with the electrophile but not the C–H bond.
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Affiliation(s)
- Liangbin Huang
- University of Rochester , Rochester, New York 14627-0216, United States
| | - Daniel J Weix
- University of Rochester , Rochester, New York 14627-0216, United States
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156
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Binnani C, Tyagi D, Rai RK, Mobin SM, Singh SK. C−H Bond Activation/Arylation Catalyzed by Arene-Ruthenium-Aniline Complexes in Water. Chem Asian J 2016; 11:3022-3031. [DOI: 10.1002/asia.201600954] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 08/09/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Chinky Binnani
- Discipline of Chemistry, School of Basic Sciences; Indian Institute of Technology (IIT) Indore; Indore 453552 India
| | - Deepika Tyagi
- Discipline of Chemistry, School of Basic Sciences; Indian Institute of Technology (IIT) Indore; Indore 453552 India
| | - Rohit K. Rai
- Discipline of Chemistry, School of Basic Sciences; Indian Institute of Technology (IIT) Indore; Indore 453552 India
| | - Shaikh M. Mobin
- Discipline of Chemistry, School of Basic Sciences; Indian Institute of Technology (IIT) Indore; Indore 453552 India
| | - Sanjay K. Singh
- Discipline of Chemistry, School of Basic Sciences; Indian Institute of Technology (IIT) Indore; Indore 453552 India
- Discipline of Metallurgy Engineering and Materials Science; Indian Institute of Technology (IIT) Indore; Indore 453552 India
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157
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Ruiz S, Villuendas P, Urriolabeitia EP. Ru-catalysed C–H functionalisations as a tool for selective organic synthesis. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.06.117] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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158
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Hubrich J, Ackermann L. Amino Acid Ligands for Ruthenium(II)-Catalyzed C-H Arylation of Aryltetrazoles with Chlorides: Expedient Access to Antihypertension Drugs. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600742] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jonathan Hubrich
- Institut für Organische und Biomolekulare Chemie; Georg-August-Universität; Tammannstraße 2 37077 Göttingen Germany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie; Georg-August-Universität; Tammannstraße 2 37077 Göttingen Germany
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159
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Dwivedi AD, Binnani C, Tyagi D, Rawat KS, Li PZ, Zhao Y, Mobin SM, Pathak B, Singh SK. Troponate/Aminotroponate Ruthenium–Arene Complexes: Synthesis, Structure, and Ligand-Tuned Mechanistic Pathway for Direct C–H Bond Arylation with Aryl Chlorides in Water. Inorg Chem 2016; 55:6739-49. [DOI: 10.1021/acs.inorgchem.6b01028] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
| | | | | | | | - Pei-Zhou Li
- Division
of Chemistry and Biological Chemistry, School of Physical and Mathematical
Sciences, Nanyang Technological University, 21 Nanyang Link 637371, Singapore
| | - Yanli Zhao
- Division
of Chemistry and Biological Chemistry, School of Physical and Mathematical
Sciences, Nanyang Technological University, 21 Nanyang Link 637371, Singapore
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160
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Paterson AJ, St John-Campbell S, Mahon MF, Press NJ, Frost CG. Catalytic meta-selective C-H functionalization to construct quaternary carbon centres. Chem Commun (Camb) 2016; 51:12807-10. [PMID: 26166441 DOI: 10.1039/c5cc03951g] [Citation(s) in RCA: 135] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A catalytic meta-selective C-H functionalization of 2-phenylpyridines using a range of tertiary halides is described. The protocol is simple to perform and uses commercially available reagents to construct challenging quaternary carbon centres in a regioselective manner. Preliminary studies suggest the C-H functionalization proceeds through a radical process directed via a remote σ-activation.
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Affiliation(s)
- Andrew J Paterson
- Centre for Sustainable Chemical Technologies, University of Bath, Bath, BA2 7AY, UK
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161
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Hirano M, Komiya S. Oxidative coupling reactions at ruthenium(0) and their applications to catalytic homo- and cross-dimerizations¶. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2015.07.008] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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162
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Yedage SL, Bhanage BM. Palladium-Catalyzed Deaminative Phenanthridinone Synthesis from Aniline via C–H Bond Activation. J Org Chem 2016; 81:4103-11. [DOI: 10.1021/acs.joc.6b00378] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Subhash L. Yedage
- Department of Chemistry, Institute of Chemical Technology, Mumbai 400 019, India
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163
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Seki M. A New Catalytic System for Ru-Catalyzed C–H Arylation Reactions and Its Application in the Practical Syntheses of Pharmaceutical Agents. Org Process Res Dev 2016. [DOI: 10.1021/acs.oprd.6b00116] [Citation(s) in RCA: 84] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Masahiko Seki
- Process R&D Department, Healthcare Business Division II, API Corporation, The KAITEKI Building, 1-13-4 Uchikanda, Chiyoda-ku, Tokyo 101-0047, Japan
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164
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Simonetti M, Perry GJP, Cambeiro XC, Juliá-Hernández F, Arokianathar JN, Larrosa I. Ru-Catalyzed C-H Arylation of Fluoroarenes with Aryl Halides. J Am Chem Soc 2016; 138:3596-606. [PMID: 26942551 PMCID: PMC4805314 DOI: 10.1021/jacs.6b01615] [Citation(s) in RCA: 105] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
![]()
Although
the ruthenium-catalyzed C–H arylation of arenes
bearing directing groups with haloarenes is well-known, this process
has never been achieved in the absence of directing groups. We report
the first example of such a process and show that unexpectedly the
reaction only takes place in the presence of catalytic amounts of
a benzoic acid. Furthermore, contrary to other transition metals,
the arylation site selectivity is governed by both electronic and
steric factors. Stoichiometric and NMR mechanistic studies support
a catalytic cycle that involves a well-defined η6-arene-ligand-free Ru(II) catalyst. Indeed, upon initial pivalate-assisted
C–H activation, the aryl-Ru(II) intermediate generated is able
to react with an aryl bromide coupling partner only in the presence
of a benzoate additive. In contrast, directing-group-containing substrates
(such as 2-phenylpyridine) do not require a benzoate additive. Deuterium
labeling and kinetic isotope effect experiments indicate that C–H
activation is both reversible and kinetically significant. Computational
studies support a concerted metalation–deprotonation (CMD)-type
ruthenation mode and shed light on the unusual arylation regioselectivity.
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Affiliation(s)
- Marco Simonetti
- School of Chemistry, University of Manchester , Oxford Road, Manchester M13 9PL, United Kingdom.,School of Biological and Chemical Sciences, Queen Mary University of London , Mile End Road, London E1 4NS, United Kingdom
| | - Gregory J P Perry
- School of Chemistry, University of Manchester , Oxford Road, Manchester M13 9PL, United Kingdom
| | - Xacobe C Cambeiro
- School of Chemistry, University of Manchester , Oxford Road, Manchester M13 9PL, United Kingdom
| | - Francisco Juliá-Hernández
- School of Biological and Chemical Sciences, Queen Mary University of London , Mile End Road, London E1 4NS, United Kingdom
| | - Jude N Arokianathar
- School of Biological and Chemical Sciences, Queen Mary University of London , Mile End Road, London E1 4NS, United Kingdom
| | - Igor Larrosa
- School of Chemistry, University of Manchester , Oxford Road, Manchester M13 9PL, United Kingdom
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165
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Sun YH, Sun TY, Wu YD, Zhang X, Rao Y. A diversity-oriented synthesis of bioactive benzanilides via a regioselective C(sp 2)-H hydroxylation strategy. Chem Sci 2016; 7:2229-2238. [PMID: 29910911 PMCID: PMC5975941 DOI: 10.1039/c5sc03905c] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Accepted: 12/03/2015] [Indexed: 12/19/2022] Open
Abstract
A diversity-oriented synthesis of bioactive benzanilides via C(sp2)-H hydroxylation has been studied. Different regioselectivity was observed with Ru(ii) and Pd(ii) catalysts. The reaction demonstrates excellent regioselectivity, good tolerance of functional groups, and high yields. A wide range of ortho-hydroxylated-benzanilides can be readily synthesized with excellent regioselectivity via this new synthetic strategy. Computational investigations revealed that the regioselectivity was controlled mainly by both steric and electronic factors. Steric effects determine the regioselective outcomes in the Ru-catalyzed reaction, while electronic effects are dominant in the Pd-catalyzed reaction.
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Affiliation(s)
- Yong-Hui Sun
- MOE Key Laboratory of Protein Sciences , Department of Pharmacology and Pharmaceutical Sciences , School of Medicine and School of Life Sciences , Tsinghua University , Beijing 100084 , China .
| | - Tian-Yu Sun
- Lab of Computational Chemistry and Drug Design , Key Laboratory of Chemical Genomics , Peking University Shenzhen Graduate School , Shenzhen 518055 , China .
| | - Yun-Dong Wu
- Lab of Computational Chemistry and Drug Design , Key Laboratory of Chemical Genomics , Peking University Shenzhen Graduate School , Shenzhen 518055 , China .
- College of Chemistry , Peking University , Beijing 100871 , China
| | - Xinhao Zhang
- Lab of Computational Chemistry and Drug Design , Key Laboratory of Chemical Genomics , Peking University Shenzhen Graduate School , Shenzhen 518055 , China .
| | - Yu Rao
- MOE Key Laboratory of Protein Sciences , Department of Pharmacology and Pharmaceutical Sciences , School of Medicine and School of Life Sciences , Tsinghua University , Beijing 100084 , China .
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166
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Hermann GN, Becker P, Bolm C. Mechanochemical Iridium(III)-Catalyzed C−H Bond Amidation of Benzamides with Sulfonyl Azides under Solvent-Free Conditions in a Ball Mill. Angew Chem Int Ed Engl 2016; 55:3781-4. [DOI: 10.1002/anie.201511689] [Citation(s) in RCA: 139] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Indexed: 11/11/2022]
Affiliation(s)
- Gary N. Hermann
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Peter Becker
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Carsten Bolm
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
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167
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Mechanochemical Iridium(III)-Catalyzed C−H Bond Amidation of Benzamides with Sulfonyl Azides under Solvent-Free Conditions in a Ball Mill. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201511689] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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168
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Singh KS, Sawant SG, Dixneuf PH. Ruthenium(II)-Catalyzed Synthesis of Pyrrole- and Indole-Fused Isocoumarins by C−H Bond Activation in DMF and Water. ChemCatChem 2016. [DOI: 10.1002/cctc.201501261] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Keisham S. Singh
- Bioorganic Chemistry Laboratory; CSIR-National Institute of Oceanography, Dona Paula; Goa 403004 India
| | - Sneha G. Sawant
- Bioorganic Chemistry Laboratory; CSIR-National Institute of Oceanography, Dona Paula; Goa 403004 India
| | - Pierre H. Dixneuf
- Centre of Catalysis and Green Chemistry-OMC; Institut Sciences Chimiques de Rennes; UMR 6226-CNRS-Université de Rennes 1; Campus de Beaulieu 35042 Rennes France
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169
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Perego LA, Grimaud L, Bellina F. Mechanistic Studies on the Palladium-Catalyzed Direct C-5 Arylation of Imidazoles: The Fundamental Role of the Azole as a Ligand for Palladium. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201500888] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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170
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Abstract
Aryl chlorides are readily available at lower cost than the corresponding bromides and iodides, but are much more challenging as substrates in metal-catalyzed cross-couplings.
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Affiliation(s)
- Gao-Feng Zha
- School of Chemistry
- Chemical Engineering and Life Science
- Wuhan University of Technology
- Wuhan
- China
| | - Hua-Li Qin
- School of Chemistry
- Chemical Engineering and Life Science
- Wuhan University of Technology
- Wuhan
- China
| | - Eric Assen B. Kantchev
- School of Chemistry and Chemical Engineering
- Hefei University of Technology
- Hefei 230009
- China
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171
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Graux LV, Giorgi M, Buono G, Clavier H. [RuCl2(η6-p-cymene)] complexes bearing phosphinous acid ligands: preparation, application in C–H bond functionalization and mechanistic investigations. Dalton Trans 2016; 45:6491-502. [DOI: 10.1039/c5dt04683a] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
A series of [RuCl2(η6-p-cymene)] complexes bearing phosphinous acid (PA) ligands have been straightforwardly prepared from the dimer [RuCl2(p-cymene)]2 and secondary phosphine oxides (SPOs) and fully characterized.
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Affiliation(s)
- Lionel V. Graux
- Aix Marseille Université
- Centrale Marseille
- CNRS
- iSm2 UMR 7313
- Marseille
| | - Michel Giorgi
- Aix Marseille Université Spectropole
- Fédération des Sciences Chimiques de Marseille
- 13397 Marseille
- France
| | - Gérard Buono
- Aix Marseille Université
- Centrale Marseille
- CNRS
- iSm2 UMR 7313
- Marseille
| | - Hervé Clavier
- Aix Marseille Université
- Centrale Marseille
- CNRS
- iSm2 UMR 7313
- Marseille
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172
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Tan Z, Jiang H, Zhang M. A novel iridium/acid co-catalyzed transfer hydrogenative C(sp3)–H bond alkylation to access functionalized N-heteroaromatics. Chem Commun (Camb) 2016; 52:9359-62. [DOI: 10.1039/c6cc03996k] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A transfer hydrogenative coupling strategy, enabling direct alkylation of C(sp3)–H bonds and atom-economic access to functionalized N-heteroaromatics, has been demonstrated.
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Affiliation(s)
- Zhenda Tan
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510641
- P. R. China
| | - Huanfeng Jiang
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510641
- P. R. China
| | - Min Zhang
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510641
- P. R. China
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173
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Jia WG, Zhang T, Xie D, Xu QT, Ling S, Zhang Q. Half-sandwich cycloruthenated complexes from aryloxazolines: synthesis, structures, and catalytic activities. Dalton Trans 2016; 45:14230-7. [DOI: 10.1039/c6dt02734b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The half-sandwich cycloruthenated complexes [Ru(p-cymene)LCl] show promising catalytic activity in nitroarene reduction.
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Affiliation(s)
- Wei-Guo Jia
- College of Chemistry and Materials Science
- Center for Nano Science and Technology
- The Key Laboratory of Functional Molecular Solids
- Ministry of Education
- Anhui Laboratory of Molecular-Based Materials
| | - Tai Zhang
- College of Chemistry and Materials Science
- Center for Nano Science and Technology
- The Key Laboratory of Functional Molecular Solids
- Ministry of Education
- Anhui Laboratory of Molecular-Based Materials
| | - Dong Xie
- College of Chemistry and Materials Science
- Center for Nano Science and Technology
- The Key Laboratory of Functional Molecular Solids
- Ministry of Education
- Anhui Laboratory of Molecular-Based Materials
| | - Qiu-Tong Xu
- College of Chemistry and Materials Science
- Center for Nano Science and Technology
- The Key Laboratory of Functional Molecular Solids
- Ministry of Education
- Anhui Laboratory of Molecular-Based Materials
| | - Shuo Ling
- College of Chemistry and Materials Science
- Center for Nano Science and Technology
- The Key Laboratory of Functional Molecular Solids
- Ministry of Education
- Anhui Laboratory of Molecular-Based Materials
| | - Qing Zhang
- College of Chemistry and Materials Science
- Center for Nano Science and Technology
- The Key Laboratory of Functional Molecular Solids
- Ministry of Education
- Anhui Laboratory of Molecular-Based Materials
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174
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Marcé P, Paterson AJ, Mahon MF, Frost CG. Mechanistic insight into ruthenium catalysed meta-sulfonation of 2-phenylpyridine. Catal Sci Technol 2016. [DOI: 10.1039/c6cy01254j] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The mechanism of the ruthenium catalysed meta-sulfonation has been studied and a novel cycloruthenated phenylpyridine complex tosylated at the para position to the metal has been structurally characterised.
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175
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Zhao Y, He Z, Li S, Tang J, Gao G, Lan J, You J. An air-stable half-sandwich RuIIcomplex as an efficient catalyst for [3+2] annulation of 2-arylcyclo-2-enones with alkynes. Chem Commun (Camb) 2016; 52:4613-6. [DOI: 10.1039/c5cc10169g] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An air-stable half-sandwich RuIIcomplex, [Ru(p-cymene)(MeCN)3](SbF6)2, catalyzed a [3+2] annulation reaction of 2-arylcyclo-2-enones with alkynesviaC(sp2)–H/alkene functionalization to construct synthetically challenging spiro carbocyclic indenes bearing a quaternary carbon.
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Affiliation(s)
- Yinsong Zhao
- Key Laboratory of Green Chemistry and Technology of Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
| | - Zhen He
- Key Laboratory of Green Chemistry and Technology of Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
| | - Shiqing Li
- Key Laboratory of Green Chemistry and Technology of Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
| | - Junbin Tang
- Key Laboratory of Green Chemistry and Technology of Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
| | - Ge Gao
- Key Laboratory of Green Chemistry and Technology of Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
| | - Jingbo Lan
- Key Laboratory of Green Chemistry and Technology of Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
| | - Jingsong You
- Key Laboratory of Green Chemistry and Technology of Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
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176
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Manikandan R, Jeganmohan M. Temperature-controlled redox-neutral ruthenium(ii)-catalyzed regioselective allylation of benzamides with allylic acetates. Org Biomol Chem 2016; 14:7691-701. [DOI: 10.1039/c6ob01498d] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Temperature controlled regioselective synthesis of ortho allyl and vinyl benzamides under redox-free conditions was reported. Detailed mechanistic investigation of the C–H bond activation and isomerization reactions was carried out.
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Affiliation(s)
- Rajendran Manikandan
- Department of Chemistry
- Indian Institution of Science Education and Research
- Pune 411021
- India
| | - Masilamani Jeganmohan
- Department of Chemistry
- Indian Institution of Science Education and Research
- Pune 411021
- India
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177
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Ajitha MJ, Huang KW, Kwak J, Kim HJ, Chang S, Jung Y. A potential role of a substrate as a base for the deprotonation pathway in Rh-catalysed C–H amination of heteroarenes: DFT insights. Dalton Trans 2016; 45:7980-5. [DOI: 10.1039/c6dt00686h] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
DFT studies suggest that basic substrates assist the C–H activation step in Rh-catalysed reactions and transport protons towards the protodemetallation step.
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Affiliation(s)
- Manjaly J. Ajitha
- Graduate School of EEWS
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon 305-701
- Korea
- KAUST Catalysis Center and Division of Physical Sciences & Engineering
| | - Kuo-Wei Huang
- KAUST Catalysis Center and Division of Physical Sciences & Engineering
- King Abdullah University of Science and Technology (KAUST)
- Thuwal 23955-6900
- Saudi Arabia
| | - Jaesung Kwak
- Center for Catalytic Hydrocarbon Functionalizations
- Institute for Basic Science (IBS)
- Daejeon 305-701
- Korea
- Department of Chemistry
| | - Hyun Jin Kim
- Center for Catalytic Hydrocarbon Functionalizations
- Institute for Basic Science (IBS)
- Daejeon 305-701
- Korea
- Department of Chemistry
| | - Sukbok Chang
- Center for Catalytic Hydrocarbon Functionalizations
- Institute for Basic Science (IBS)
- Daejeon 305-701
- Korea
- Department of Chemistry
| | - Yousung Jung
- Graduate School of EEWS
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon 305-701
- Korea
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178
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Kaishap PP, Sarma B, Gogoi S. The amide C–N bond of isatins as the directing group and the internal oxidant in Ru-catalyzed C–H activation and annulation reactions: access to 8-amido isocoumarins. Chem Commun (Camb) 2016; 52:9809-12. [DOI: 10.1039/c6cc04461a] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The amide C–N bond of isatins was used as the oxidizing directing group for 4C–H activation and annulation reactions with alkynes.
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Affiliation(s)
- Partha Pratim Kaishap
- Chemical Science & Technology Division
- CSIR-North East Institute of Science and Technology
- Jorhat-785006
- India
| | - Bipul Sarma
- Department of Chemical Sciences
- Tezpur University
- Tezpur–784028
- India
| | - Sanjib Gogoi
- Chemical Science & Technology Division
- CSIR-North East Institute of Science and Technology
- Jorhat-785006
- India
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179
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Zell D, Warratz S, Gelman D, Garden SJ, Ackermann L. Single-Component Phosphinous Acid Ruthenium(II) Catalysts for Versatile C−H Activation by Metal-Ligand Cooperation. Chemistry 2015; 22:1248-52. [DOI: 10.1002/chem.201504851] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Indexed: 11/11/2022]
Affiliation(s)
- Daniel Zell
- Institut für Organische und Biomolekulare Chemie; Georg-August-Universität Göttingen; Tammannstraße 2 37077 Göttingen Germany
| | - Svenja Warratz
- Institut für Organische und Biomolekulare Chemie; Georg-August-Universität Göttingen; Tammannstraße 2 37077 Göttingen Germany
| | - Dmitri Gelman
- Institute of Chemistry; The Hebrew University; Edmond Safra Campus 91904 Jerusalem Israel
| | - Simon J. Garden
- Department of Organic Chemistry; Instituto de Química; Universidade Federal do Rio de Janeiro, Cidade Universitaria; CT Bloco A Ilha do Fundao, RJ 21941-909 Brazil
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie; Georg-August-Universität Göttingen; Tammannstraße 2 37077 Göttingen Germany
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180
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Becker P, Pirwerdjan R, Bolm C. Acylsilanes in Iridium-Catalyzed Directed Amidation Reactions and Formation of Heterocycles via Siloxycarbenes. Angew Chem Int Ed Engl 2015; 54:15493-6. [PMID: 26537526 DOI: 10.1002/anie.201508501] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Indexed: 12/22/2022]
Abstract
Exposing ortho-amido aroylsilanes to visible light or heat leads to cyclization reactions that provide N-heterocyclic compounds via siloxycarbenes as key intermediates. The previously unreported starting materials have been prepared by directed amidations of aromatic acylsilanes in the presence of an iridium catalyst followed by N-alkylation.
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Affiliation(s)
- Peter Becker
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen (Germany)
| | - Ramona Pirwerdjan
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen (Germany)
| | - Carsten Bolm
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen (Germany).
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181
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Manikandan R, Madasamy P, Jeganmohan M. Ruthenium-Catalyzed ortho Alkenylation of Aromatics with Alkenes at Room Temperature with Hydrogen Evolution. ACS Catal 2015. [DOI: 10.1021/acscatal.5b02218] [Citation(s) in RCA: 130] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Rajendran Manikandan
- Department of Chemistry, Indian Institute of Science Education and Research, Pune 411021, India
| | - Padmaja Madasamy
- Department of Chemistry, Indian Institute of Science Education and Research, Pune 411021, India
| | - Masilamani Jeganmohan
- Department of Chemistry, Indian Institute of Science Education and Research, Pune 411021, India
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182
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Becker P, Pirwerdjan R, Bolm C. Acylsilanes in Iridium-Catalyzed Directed Amidation Reactions and Formation of Heterocycles via Siloxycarbenes. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201508501] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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183
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Bechtoldt A, Tirler C, Raghuvanshi K, Warratz S, Kornhaaß C, Ackermann L. Ruthenium Oxidase Catalysis for Site-Selective C-H Alkenylations with Ambient O2
as the Sole Oxidant. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201507801] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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184
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Paymode DJ, Ramana CV. Ruthenium(II)-Catalyzed C3 Arylation of 2-Aroylbenzofurans with Arylboronic Acids/Aryltrifluoroborates via Carbonyl-Directed C–H Bond Activation. J Org Chem 2015; 80:11551-8. [DOI: 10.1021/acs.joc.5b01932] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Dinesh J. Paymode
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, Maharashtra 411008, India
| | - Chepuri V. Ramana
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, Maharashtra 411008, India
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185
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Bechtoldt A, Tirler C, Raghuvanshi K, Warratz S, Kornhaaß C, Ackermann L. Ruthenium Oxidase Catalysis for Site-Selective C-H Alkenylations with Ambient O2
as the Sole Oxidant. Angew Chem Int Ed Engl 2015; 55:264-7. [DOI: 10.1002/anie.201507801] [Citation(s) in RCA: 146] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Revised: 09/27/2015] [Indexed: 01/23/2023]
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186
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Sollert C, Orthaber A, Pilarski LT. Crystal structure of aceto-nitrile-[η(6)-1-methyl-4-(1-methyl-eth-yl)benzene][1-(pyrimidin-2-yl)-3H-indol-1-ium-2-yl-κ(2) N,C]ruthenium(II) bis-(hexa-fluorido-anti-monate). Acta Crystallogr E Crystallogr Commun 2015; 71:1190-2. [PMID: 26594403 PMCID: PMC4647386 DOI: 10.1107/s2056989015016710] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Accepted: 09/07/2015] [Indexed: 11/10/2022]
Abstract
In the title compound, [Ru(C10H14)(C12H9N3)(CH3CN)][SbF6]2, the ruthenium(II) cation is η (6)-coordinated by the para-cymene ligand with a Ru-centroid(η (6)-benzene) distance of 1.746 (2) Å. Furthermore, ruthenium coordinations to the C and N atoms of the pyrimidyl indole ligand are found to be 1.986 (4) and 2.082 (3) Å, respectively. The typical piano-stool coordination environment is saturated with an aceto-nitrile solvent mol-ecule with a Ru-N distance of 2.044 (3) Å. The indolyl ligand is protonated at the C3 position with the N=C imine bond length appropriate to that of related 3H-indole-based complexes. In the crystal, the complex cation is linked to the SbF6 (-) ions through weak C-H⋯F hydrogen bonds.
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Affiliation(s)
- Carina Sollert
- Uppsala University, Department of Chemistry – BMC, Box 576, 75123 Uppsala, Sweden
| | - Andreas Orthaber
- Uppsala University, Department of Chemistry – Ångström Laboratories, Box 523, 75120 Uppsala, Sweden
| | - Lukasz T. Pilarski
- Uppsala University, Department of Chemistry – BMC, Box 576, 75123 Uppsala, Sweden
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187
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Li B, Darcel C, Roisnel T, Dixneuf PH. Cycloruthenation of aryl imines and N-heteroaryl benzenes via C–H bond activation with Ru(II) and acetate partners. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2015.02.050] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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188
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Nobushige K, Hirano K, Satoh T, Miura M. Rhodium-catalyzed direct ortho-alkenylation of phenyl sulfones with alkynes utilizing sulfonyl function as modifiable directing group. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.03.046] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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189
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Manikandan R, Madasamy P, Jeganmohan M. Ruthenium-Catalyzed Oxidant-Free Allylation of Aromatic Ketoximes with Allylic Acetates at Room Temperature. Chemistry 2015; 21:13934-8. [PMID: 26291748 DOI: 10.1002/chem.201502284] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Indexed: 01/12/2023]
Abstract
Substituted aromatic ketoximes reacted efficiently with allylic acetates in the presence of {[RuCl2(p-cymene)]2} and AgSbF6 in 1,2-dichloroethane at ambient temperature, providing ortho-allyl aromatic ketoximes in a highly regioselective manner without an oxidant. In the reaction, the acetate group of allyl acetate acts as a base to activate the C-H bond of aromatics. Later, ortho-allyl aromatic ketoximes were converted into ortho-allyl aromatic ketones in the presence of HCl.
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Affiliation(s)
- Rajendran Manikandan
- Department of Chemistry, Indian Institute of Science Education and Research, Pune 411021 (India)
| | - Padmaja Madasamy
- Department of Chemistry, Indian Institute of Science Education and Research, Pune 411021 (India)
| | - Masilamani Jeganmohan
- Department of Chemistry, Indian Institute of Science Education and Research, Pune 411021 (India).
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190
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Dastbaravardeh N, Toba T, Farmer ME, Yu JQ. Monoselective o-C-H Functionalizations of Mandelic Acid and α-Phenylglycine. J Am Chem Soc 2015; 137:9877-84. [PMID: 26162456 PMCID: PMC4538457 DOI: 10.1021/jacs.5b04324] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2015] [Indexed: 01/31/2023]
Abstract
Pd-catalyzed C-H functionalization of mandelic acid and α-phenylglycine is reported. We have developed different protocols for the arylation, iodination, acetoxylation, and olefination of these substrates based on two different (Pd(II)/Pd(IV) and Pd(II)/Pd(0)) catalytic cycles. Four crucial features of these protocols are advantageous for practical applications. First, the α-hydroxyl and amino groups are protected with simple protecting groups such as acetates (Ac, Piv) and carbamates (Boc, Fmoc), respectively. Second, these protocols do not involve installation and removal of a directing group. Third, monoselectivity is accomplished. Fourth, no epimerization occurs at the vulnerable α-chiral centers.
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Affiliation(s)
- Navid Dastbaravardeh
- Department of Chemistry, The
Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, California 92037, United States
| | - Tetsuya Toba
- Department of Chemistry, The
Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, California 92037, United States
| | - Marcus E. Farmer
- Department of Chemistry, The
Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, California 92037, United States
| | - Jin-Quan Yu
- Department of Chemistry, The
Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, California 92037, United States
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191
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Shome S, Singh SP. Solvent-Free Ruthenium(II)-Catalyzed C-H Activation: Synthesis of Alkenylarylpyrazole Derivatives. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500634] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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192
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Kumar R, Arigela RK, Kundu B. Unprecedented Transformation of a Directing Group Generated In Situ and Its Application in the One-Pot Synthesis of 2-Alkenyl Benzonitriles. Chemistry 2015; 21:11807-12. [DOI: 10.1002/chem.201501449] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Indexed: 01/26/2023]
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193
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Gray A, Tsybizova A, Roithova J. Carboxylate-assisted C-H activation of phenylpyridines with copper, palladium and ruthenium: a mass spectrometry and DFT study. Chem Sci 2015; 6:5544-5553. [PMID: 29861892 PMCID: PMC5949854 DOI: 10.1039/c5sc01729g] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Accepted: 06/30/2015] [Indexed: 11/21/2022] Open
Abstract
The transition state of metal carboxylate mediated C–H activation is associated with carbon–metal bond formation supported by electron-poor carboxylates.
The C–H activation of 2-phenylpyridine, catalyzed by copper(ii), palladium(ii) and ruthenium(ii) carboxylates, was studied in the gas phase. ESI-MS, infrared multiphoton dissociation spectroscopy and quantum chemical calculations were combined to investigate the intermediate species in the reaction. Collision induced dissociation (CID) experiments and DFT calculations allowed estimation of the energy required for this C–H activation step and the subsequent acetic acid loss. Hammett plots constructed from the CID experiments using different copper carboxylates as catalysts revealed that the use of stronger acids accelerates the C–H activation step. The reasoning can be traced from the associated transition structures that suggest a concerted mechanism and the key effect of the carbon–metal bond pre-formation. Carboxylates derived from stronger acids make the metal atom more electrophilic and therefore shift the reaction towards the formation of C–H activated products.
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Affiliation(s)
- A Gray
- Department of Organic Chemistry , Faculty of Science , Charles University in Prague , Hlavova 2030/8 , 12843 Prague 2 , Czech Republic .
| | - A Tsybizova
- Department of Organic Chemistry , Faculty of Science , Charles University in Prague , Hlavova 2030/8 , 12843 Prague 2 , Czech Republic .
| | - J Roithova
- Department of Organic Chemistry , Faculty of Science , Charles University in Prague , Hlavova 2030/8 , 12843 Prague 2 , Czech Republic .
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194
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Hubrich J, Himmler T, Rodefeld L, Ackermann L. Ruthenium(II)-Catalyzed C–H Arylation of Azoarenes by Carboxylate Assistance. ACS Catal 2015. [DOI: 10.1021/acscatal.5b00939] [Citation(s) in RCA: 82] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jonathan Hubrich
- Institut
für Organische und Biomolekulare Chemie, Georg-August-Universität, Tammannstraße 2, 37077 Göttingen, Germany
| | - Thomas Himmler
- Bayer CropScience AG, BCS AG-R&D, Alfred-Nobel-Straße 50, 40789 Monheim, Germany
| | - Lars Rodefeld
- Bayer CropScience AG, BCS AG-R&D, Alfred-Nobel-Straße 50, 40789 Monheim, Germany
| | - Lutz Ackermann
- Institut
für Organische und Biomolekulare Chemie, Georg-August-Universität, Tammannstraße 2, 37077 Göttingen, Germany
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195
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Barsu N, Kalsi D, Sundararaju B. Carboxylate Assisted Ni-Catalyzed CH Bond Allylation of Benzamides. Chemistry 2015; 21:9364-8. [DOI: 10.1002/chem.201500639] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2015] [Indexed: 11/06/2022]
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196
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Kim K, Choe H, Jeong Y, Lee JH, Hong S. Ru(II)-Catalyzed Site-Selective Hydroxylation of Flavone and Chromone Derivatives: The Importance of the 5-Hydroxyl Motif for the Inhibition of Aurora Kinases. Org Lett 2015; 17:2550-3. [DOI: 10.1021/acs.orglett.5b01138] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Kiho Kim
- Department
of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, Korea
- Center
for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon, 305-701, Korea
| | - Hyeonjeong Choe
- Department
of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, Korea
- Center
for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon, 305-701, Korea
| | - Yujeong Jeong
- Department
of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, Korea
- Center
for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon, 305-701, Korea
| | - Jun Hee Lee
- Center
for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon, 305-701, Korea
| | - Sungwoo Hong
- Department
of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, Korea
- Center
for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon, 305-701, Korea
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197
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Ruiz S, Villuendas P, Ortuño MA, Lledós A, Urriolabeitia EP. Ruthenium-Catalyzed Oxidative Coupling of Primary Amines with Internal Alkynes through CH Bond Activation: Scope and Mechanistic Studies. Chemistry 2015; 21:8626-36. [DOI: 10.1002/chem.201500338] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Indexed: 12/11/2022]
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198
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Shin K, Kim H, Chang S. Transition-metal-catalyzed C-N bond forming reactions using organic azides as the nitrogen source: a journey for the mild and versatile C-H amination. Acc Chem Res 2015; 48:1040-52. [PMID: 25821998 DOI: 10.1021/acs.accounts.5b00020] [Citation(s) in RCA: 759] [Impact Index Per Article: 84.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Owing to the prevalence of nitrogen-containing compounds in functional materials, natural products and important pharmaceutical agents, chemists have actively searched for the development of efficient and selective methodologies allowing for the facile construction of carbon-nitrogen bonds. While metal-catalyzed C-N cross-coupling reactions have been established as one of the most general protocols for C-N bond formation, these methods require starting materials equipped with functional groups such as (hetero)aryl halides or their equivalents, thus generating stoichiometric amounts of halide salts as byproducts. To address this aspect, a transition-metal-catalyzed direct C-H amination approach has emerged as a step- and atom-economical alternative to the conventional C-N cross-coupling reactions. However, despite the significant recent advances in metal-mediated direct C-H amination reactions, most available procedures need harsh conditions requiring stoichiometric external oxidants. In this context, we were curious to see whether a transition-metal-catalyzed mild C-H amination protocol could be achieved using organic azides as the amino source. We envisaged that a dual role of organic azides as an environmentally benign amino source and also as an internal oxidant via N-N2 bond cleavage would be key to develop efficient C-H amination reactions employing azides. An additional advantage of this approach was anticipated: that a sole byproduct is molecular nitrogen (N2) under the perspective catalytic conditions. This Account mainly describes our research efforts on the development of rhodium- and iridium-catalyzed direct C-H amination reactions with organic azides. Under our initially optimized Rh(III)-catalyzed amination conditions, not only sulfonyl azides but also aryl- and alkyl azides could be utilized as facile amino sources in reaction with various types of C(sp(2))-H bonds bearing such directing groups as pyridine, amide, or ketoxime. More recently, a new catalyst system using Ir(III) species was developed for the direct C-H amidation of arenes and alkenes with acyl azides under exceptionally mild conditions. As a natural extension, amidation of primary C(sp(3))-H bonds could also be realized on the basis of the superior activity of the Cp*Ir(III) catalyst. Mechanistic investigations revealed that a catalytic cycle is operated mainly in three stages: (i) chelation-assisted metallacycle formation via C-H bond cleavage; (ii) C-N bond formation through the in situ generation of a metal-nitrenoid intermediate followed by the insertion of an imido moiety to the metal carbon bond; (iii) product release via protodemetalation with the concomitant catalyst regeneration. In addition, this Account also summarizes the recent advances in the ruthenium- and cobalt-catalyzed amination reactions using organic azides, developed by our own and other groups. Comparative studies on the relative performance of those catalytic systems are briefly described.
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Affiliation(s)
- Kwangmin Shin
- Department of Chemistry, Korea Advanced Institute of Science & Technology (KAIST), Daejeon 305-338, Republic of Korea
- Center
for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 305-338, Republic of Korea
| | - Hyunwoo Kim
- Department of Chemistry, Korea Advanced Institute of Science & Technology (KAIST), Daejeon 305-338, Republic of Korea
- Center
for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 305-338, Republic of Korea
| | - Sukbok Chang
- Department of Chemistry, Korea Advanced Institute of Science & Technology (KAIST), Daejeon 305-338, Republic of Korea
- Center
for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 305-338, Republic of Korea
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199
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Rajkumar S, Karthik S, Gandhi T. Ru(II)-Catalyzed β-Carboline Directed C–H Arylation and Isolation of Its Cycloruthenated Intermediates. J Org Chem 2015; 80:5532-45. [DOI: 10.1021/acs.joc.5b00411] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Subramani Rajkumar
- Materials
Chemistry Division, School of Advanced Sciences, VIT University, Vellore 632014, Tamil Nadu, India
| | - Shanmugam Karthik
- Materials
Chemistry Division, School of Advanced Sciences, VIT University, Vellore 632014, Tamil Nadu, India
| | - Thirumanavelan Gandhi
- Materials
Chemistry Division, School of Advanced Sciences, VIT University, Vellore 632014, Tamil Nadu, India
- Centre
for Nanomaterials, VIT University, Vellore 632014, Tamil Nadu, India
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200
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Cheng H, Dong W, Dannenberg CA, Dong S, Guo Q, Bolm C. Ruthenium-Catalyzed Hydroarylations of Oxa- and Azabicyclic Alkenes. ACS Catal 2015. [DOI: 10.1021/acscatal.5b00258] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hanchao Cheng
- Institute of Organic Chemistry and ‡Institute of Inorganic
Chemistry, RWTH Aachen University, Landoltweg 1, 52056 Aachen, Germany
| | - Wanrong Dong
- Institute of Organic Chemistry and ‡Institute of Inorganic
Chemistry, RWTH Aachen University, Landoltweg 1, 52056 Aachen, Germany
| | - Carl Albrecht Dannenberg
- Institute of Organic Chemistry and ‡Institute of Inorganic
Chemistry, RWTH Aachen University, Landoltweg 1, 52056 Aachen, Germany
| | - Shunxi Dong
- Institute of Organic Chemistry and ‡Institute of Inorganic
Chemistry, RWTH Aachen University, Landoltweg 1, 52056 Aachen, Germany
| | - Qianqian Guo
- Institute of Organic Chemistry and ‡Institute of Inorganic
Chemistry, RWTH Aachen University, Landoltweg 1, 52056 Aachen, Germany
| | - Carsten Bolm
- Institute of Organic Chemistry and ‡Institute of Inorganic
Chemistry, RWTH Aachen University, Landoltweg 1, 52056 Aachen, Germany
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