101
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Reid S, Barrett AGM, Hill MS, Procopiou PA. Heavier Alkaline Earth Catalyzed Ene-yne Cyclizations: Atom-Efficient Access to Tetrahydroisoquinoline Frameworks. Org Lett 2014; 16:6016-9. [DOI: 10.1021/ol502600g] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Stephanie Reid
- Department
of Chemistry, Imperial College London, Exhibition Road, South Kensington, London SW7 2AZ, U.K
| | - Anthony G. M. Barrett
- Department
of Chemistry, Imperial College London, Exhibition Road, South Kensington, London SW7 2AZ, U.K
| | - Michael S. Hill
- Department
of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K
| | - Panayiotis A. Procopiou
- GlaxoSmithKline Medicines Research Center, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, U.K
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102
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Erickson KA, Dixon LS, Wright DS, Waterman R. Exploration of tin-catalyzed phosphine dehydrocoupling: Catalyst effects and observation of tin-catalyzed hydrophosphination. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2014.07.002] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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103
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104
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Yim JCH, Schafer LL. Efficient Anti-Markovnikov-Selective Catalysts for Intermolecular Alkyne Hydroamination: Recent Advances and Synthetic Applications. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402300] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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105
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Tobisch S. Intermolecular hydroamination of vinylarenes by iminoanilide alkaline-earth catalysts: a computational scrutiny of mechanistic pathways. Chemistry 2014; 20:8988-9001. [PMID: 24958273 DOI: 10.1002/chem.201402557] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Indexed: 11/10/2022]
Abstract
A thorough computational exploration of the mechanistic intricacies of the intermolecular hydroamination (HA) of vinylarenes by a recently reported class of kinetically stabilised iminoanilide [{N^N}Ae{N(SiMe3)2}⋅(THF)n] alkaline-earth amido compounds (Ae = Ca, Sr, Ba) is presented. Two distinct mechanistic pathways for catalytic HA mediated by alkaline-earth and rare-earth compounds have emerged over the years that account equally well for the specific features of the process. On one hand, a concerted proton-assisted pathway to deliver the amine product in a single step can be invoked and, on the other, a stepwise σ-insertive pathway that comprises a rapid, reversible migratory olefin insertion step linked to a less facile, irreversible Ae-C alkyl bond aminolysis. The results of the study presented herein, which employed a heavily benchmarked and reliable DFT methodology, supports a stepwise σ-insertive pathway that involves fast and reversible migratory C=C bond insertion into the polar Ae-N pyrrolido σ bond. This proceeds with strict 2,1 regioselectivity via a highly polarised four-centre transition state (TS) structure, linked to irreversible intramolecular Ae-C bond aminolysis of the alkaline-earth alkyl intermediate as the energetically favourable mechanism. Turnover-limiting aminolysis is consistent with the significant KIE measured; the DFT-derived effective barrier matches the Eyring parameter empirically determined for the best-performing {N^N}Ba(NR2) catalyst gratifyingly well. It also predicts the observed trend in reactivity (Ca<Sr<Ba) correctly and the computationally estimated primary KIE is close to the observed values. Non-competitive kinetic demands militate against the operation of the alternative concerted proton-assisted pathway, which describes N-C bond formation triggered by concomitant amino proton transfer at the C=C linkage via a multi-centre TS structure. A detailed comparison of {N^N}Ae(NR2) catalysts revealed that the variation in the Ae-pyrrolido bond strength together with the degree of protection of the alkaline earth by a sterically encumbering iminoanilide ligand scaffold not only profoundly influences the performance in HA catalysis, but also the likelihood of traversing rival mechanistic pathways.
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Affiliation(s)
- Sven Tobisch
- University of St Andrews, School of Chemistry, Purdie Building, North Haugh, St Andrews, Fife KY16 9ST (UK), Fax: (+44) 1797-383-652.
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106
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Abadie MA, Trivelli X, Medina F, Capet F, Roussel P, Agbossou-Niedercorn F, Michon C. Asymmetric Intramolecular Hydroamination of Alkenes in Mild and Wet Conditions-Structure and Reactivity of Cationic Binuclear Gold(I) Catalysts. ChemCatChem 2014. [DOI: 10.1002/cctc.201402350] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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107
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Germain S, Schulz E, Hannedouche J. Anti-Markovnikov Hydroamination of Aromatic Alkenes with Secondary Amines Catalyzed by Easily Accessible Yttrium Complexes. ChemCatChem 2014. [DOI: 10.1002/cctc.201402012] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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108
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Hut’ka M, Tsubogo T, Kobayashi S. Calcium-Catalyzed Bis-hydrothiolation of Unactivated Alkynes Providing Dithioacetals. Organometallics 2014. [DOI: 10.1021/om500442u] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Martin Hut’ka
- Department of Chemistry,
School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Tetsu Tsubogo
- Department of Chemistry,
School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Shu̅ Kobayashi
- Department of Chemistry,
School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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109
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Lee J, Muthaiah S, Hong SH. Tandem Synthesis of Amides and Secondary Amines from Esters with Primary Amines under Solvent-Free Conditions. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400319] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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110
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Nguyen TM, Manohar N, Nicewicz DA. anti-Markovnikov hydroamination of alkenes catalyzed by a two-component organic photoredox system: direct access to phenethylamine derivatives. Angew Chem Int Ed Engl 2014; 53:6198-201. [PMID: 24764195 PMCID: PMC4073672 DOI: 10.1002/anie.201402443] [Citation(s) in RCA: 199] [Impact Index Per Article: 19.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Revised: 03/25/2014] [Indexed: 11/09/2022]
Abstract
Disclosed herein is a general catalytic system for the intermolecular anti-Markovnikov hydroamination of alkenes. By using an organocatalytic photoredox system, α- and β-substituted styrenes as well as aliphatic alkenes undergo anti-Markovnikov hydroamination. Heterocyclic amines were also successfully employed as nitrogen nucleophiles, thus providing a direct route to heterocyclic motifs common in medicinal agents.
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Affiliation(s)
- Tien M. Nguyen
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3290 (USA)
| | - Namita Manohar
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3290 (USA)
| | - David A. Nicewicz
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3290 (USA)
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111
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Olejník R, Padělková Z, Fridrichová A, Horáček M, Merna J, Růžička A. Structure and potential applications of amido lanthanide complexes chelated by bifunctional β-diketiminate ligand. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2014.02.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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112
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Roşca SC, Roisnel T, Dorcet V, Carpentier JF, Sarazin Y. Potassium and Well-Defined Neutral and Cationic Calcium Fluoroalkoxide Complexes: Structural Features and Reactivity. Organometallics 2014. [DOI: 10.1021/om500343w] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Sorin-Claudiu Roşca
- Institut
des Sciences Chimiques de Rennes, UMR 6226 CNRS, Université de Rennes 1, Campus de Beaulieu, 35042 Rennes Cedex, France
| | - Thierry Roisnel
- Institut
des Sciences Chimiques de Rennes, UMR 6226 CNRS, Université de Rennes 1, Campus de Beaulieu, 35042 Rennes Cedex, France
| | - Vincent Dorcet
- Institut
des Sciences Chimiques de Rennes, UMR 6226 CNRS, Université de Rennes 1, Campus de Beaulieu, 35042 Rennes Cedex, France
| | - Jean-François Carpentier
- Institut
des Sciences Chimiques de Rennes, UMR 6226 CNRS, Université de Rennes 1, Campus de Beaulieu, 35042 Rennes Cedex, France
| | - Yann Sarazin
- Institut
des Sciences Chimiques de Rennes, UMR 6226 CNRS, Université de Rennes 1, Campus de Beaulieu, 35042 Rennes Cedex, France
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113
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Liptrot DJ, Hill PMS, Mahon MF. Accessing the Single-Electron Manifold: Magnesium-mediated Hydrogen Release from Silanes. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201403208] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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114
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Liptrot DJ, Hill PMS, Mahon MF. Accessing the Single-Electron Manifold: Magnesium-mediated Hydrogen Release from Silanes. Angew Chem Int Ed Engl 2014; 53:6224-7. [DOI: 10.1002/anie.201403208] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Indexed: 11/09/2022]
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115
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Nguyen TM, Manohar N, Nicewicz DA. anti-Markovnikov Hydroamination of Alkenes Catalyzed by a Two-Component Organic Photoredox System: Direct Access to Phenethylamine Derivatives. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201402443] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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116
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Goldfogel MJ, Roberts CC, Meek SJ. Intermolecular hydroamination of 1,3-dienes catalyzed by bis(phosphine)carbodicarbene-rhodium complexes. J Am Chem Soc 2014; 136:6227-30. [PMID: 24742315 DOI: 10.1021/ja502275w] [Citation(s) in RCA: 118] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A carbodicarbene (CDC)-based pincer ligand scaffold is reported, along with its application to site-selective Rh(I)-catalyzed intermolecular hydroamination of 1,3-dienes with aryl and alkyl amines. To the best of our knowledge, this is the first example of the use of a well-defined CDC complex as an efficient catalyst. Transformations proceed in the presence of 1.0-5.0 mol % Rh complex at 35-120 °C; allylic amines are obtained in up to 97% yield and with >98:2 site selectivity.
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Affiliation(s)
- Matthew J Goldfogel
- Department of Chemistry, The University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599-3290, United States
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117
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Yim JCH, Bexrud JA, Ayinla RO, Leitch DC, Schafer LL. Bis(amidate)bis(amido) Titanium Complex: A Regioselective Intermolecular Alkyne Hydroamination Catalyst. J Org Chem 2014; 79:2015-28. [DOI: 10.1021/jo402668q] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Jacky C.-H. Yim
- Department of Chemistry, University of British Columbia, 2036
Main Mall, Vancouver, British
Columbia V6T 1Z1, Canada
| | - Jason A. Bexrud
- Department of Chemistry, University of British Columbia, 2036
Main Mall, Vancouver, British
Columbia V6T 1Z1, Canada
| | - Rashidat O. Ayinla
- Department of Chemistry, University of British Columbia, 2036
Main Mall, Vancouver, British
Columbia V6T 1Z1, Canada
| | - David C. Leitch
- Department of Chemistry, University of British Columbia, 2036
Main Mall, Vancouver, British
Columbia V6T 1Z1, Canada
| | - Laurel L. Schafer
- Department of Chemistry, University of British Columbia, 2036
Main Mall, Vancouver, British
Columbia V6T 1Z1, Canada
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118
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Nagata H, Sugimoto Y, Ito Y, Tanaka M, Yoshimatsu M. Nickel–palladium-catalyzed hydroamination/cyclization of sulfur-substituted 1,6-diynes with secondary amines. Tetrahedron 2014. [DOI: 10.1016/j.tet.2013.12.049] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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119
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Hesp KD. Kupferkatalysierte regio- und enantioselektive Hydroaminierung von Alkenen mit Hydroxylaminen. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201309262] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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120
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Hesp KD. Copper-Catalyzed Regio- and Enantioselective Hydroamination of Alkenes with Hydroxylamines. Angew Chem Int Ed Engl 2014; 53:2034-6. [DOI: 10.1002/anie.201309262] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2013] [Indexed: 11/06/2022]
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121
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Banerjee D, Junge K, Beller M. A General Catalytic Hydroamidation of 1,3-Dienes: Atom-Efficient Synthesis ofN-Allyl Heterocycles, Amides, and Sulfonamides. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201308874] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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122
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Banerjee D, Junge K, Beller M. A General Catalytic Hydroamidation of 1,3-Dienes: Atom-Efficient Synthesis ofN-Allyl Heterocycles, Amides, and Sulfonamides. Angew Chem Int Ed Engl 2014; 53:1630-5. [DOI: 10.1002/anie.201308874] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2013] [Indexed: 11/10/2022]
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123
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Abstract
A new strategy to access linear amines from terminal olefin precursors is reported. This two-step, one-pot hydroamination methodology employs sequential oxidation and reduction catalytic cycles. The formal hydroamination transformation proceeds with excellent regioselectivity, and only the anti-Markovnikov product is observed. Up to 70% yield can be obtained from styrenes or aliphatic olefins and either primary or secondary aromatic amines. Additionally, the scope is broad with respect to the olefin and accommodates a variety of functionalities; we demonstrate that amines with removable aryl protecting groups may be utilized to allow access to a more diverse array of hydroamination adducts.
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Affiliation(s)
- Sarah M Bronner
- Arnold and Mabel Beckman Laboratories of Chemical Synthesis, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California, 91125, USA
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124
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Burgess KMN, Xu Y, Leclerc MC, Bryce DL. Alkaline-Earth Metal Carboxylates Characterized by 43Ca and 87Sr Solid-State NMR: Impact of Metal-Amine Bonding. Inorg Chem 2013; 53:552-61. [DOI: 10.1021/ic402658d] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Kevin M. N. Burgess
- Department
of Chemistry and Centre for Catalysis Research and Innovation, University of Ottawa, 10 Marie Curie Private, Ottawa, Ontario, Canada K1N
6N5
| | - Yang Xu
- Department
of Chemistry and Centre for Catalysis Research and Innovation, University of Ottawa, 10 Marie Curie Private, Ottawa, Ontario, Canada K1N
6N5
| | - Matthew C. Leclerc
- Department
of Chemistry and Centre for Catalysis Research and Innovation, University of Ottawa, 10 Marie Curie Private, Ottawa, Ontario, Canada K1N
6N5
| | - David L. Bryce
- Department
of Chemistry and Centre for Catalysis Research and Innovation, University of Ottawa, 10 Marie Curie Private, Ottawa, Ontario, Canada K1N
6N5
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125
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Mukherjee A, Sen TK, Ghorai PK, Mandal SK. Organozinc Catalyst on a Phenalenyl Scaffold for Intramolecular Hydroamination of Aminoalkenes. Organometallics 2013. [DOI: 10.1021/om400906u] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Arup Mukherjee
- Department of Chemical Sciences, Indian Institute of Science Education and Research-Kolkata, Mohanpur 741252, Nadia, West Bengal, India
| | - Tamal K. Sen
- Department of Chemical Sciences, Indian Institute of Science Education and Research-Kolkata, Mohanpur 741252, Nadia, West Bengal, India
| | - Pradip Kr. Ghorai
- Department of Chemical Sciences, Indian Institute of Science Education and Research-Kolkata, Mohanpur 741252, Nadia, West Bengal, India
| | - Swadhin K. Mandal
- Department of Chemical Sciences, Indian Institute of Science Education and Research-Kolkata, Mohanpur 741252, Nadia, West Bengal, India
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126
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Pierson JM, Ingalls EL, Vo RD, Michael FE. Palladium(II)-Catalyzed Intramolecular Hydroamination of 1,3-Dienes to Give Homoallylic Amines. Angew Chem Int Ed Engl 2013; 52:13311-3. [DOI: 10.1002/anie.201305766] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2013] [Revised: 08/27/2013] [Indexed: 11/11/2022]
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127
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Pierson JM, Ingalls EL, Vo RD, Michael FE. Palladium(II)-Catalyzed Intramolecular Hydroamination of 1,3-Dienes to Give Homoallylic Amines. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201305766] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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128
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The non-innocent phenalenyl unit: an electronic nest to modulate the catalytic activity in hydroamination reaction. Sci Rep 2013; 3:2821. [PMID: 24084653 PMCID: PMC3788371 DOI: 10.1038/srep02821] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2013] [Accepted: 09/09/2013] [Indexed: 01/15/2023] Open
Abstract
The phenalenyl unit has played intriguing role in different fields of research spanning from chemistry, material chemistry to device physics acting as key electronic reservoir which has not only led to the best organic single component conductor but also created the spin memory device of next generation. Now we show the non-innocent behaviour of phenalenyl unit in modulating the catalytic behaviour in a homogeneous organic transformation. The present study establishes that the cationic state of phenalenyl unit can act as an organic Lewis acceptor unit to influence the catalytic outcome of intermolecular hydroamination reaction of carbodiimides. For the present study, we utilized organoaluminum complexes of phenalenyl ligands in which the phenalenyl unit maintains the closed shell electronic state. The DFT calculation reveals that the energy of LUMO of the catalyst is mainly controlled by phenalenyl ligands which in turn determines the outcome of the catalysis.
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129
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Michon C, Medina F, Abadie MA, Agbossou-Niedercorn F. Asymmetric Intramolecular Hydroamination of Allenes using Mononuclear Gold Catalysts. Organometallics 2013. [DOI: 10.1021/om4009058] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Christophe Michon
- Université Lille Nord de France, 59000 Lille, France
- CNRS, UCCS UMR
8181, 59655 Villeneuve
d’Ascq, France
- ENSCL, CCCF, (Chimie-C7), CS 90108, 59652 Villeneuve d’Ascq Cedex, France
| | - Florian Medina
- Université Lille Nord de France, 59000 Lille, France
- ENSCL, CCCF, (Chimie-C7), CS 90108, 59652 Villeneuve d’Ascq Cedex, France
| | - Marc-Antoine Abadie
- Université Lille Nord de France, 59000 Lille, France
- ENSCL, CCCF, (Chimie-C7), CS 90108, 59652 Villeneuve d’Ascq Cedex, France
| | - Francine Agbossou-Niedercorn
- Université Lille Nord de France, 59000 Lille, France
- CNRS, UCCS UMR
8181, 59655 Villeneuve
d’Ascq, France
- ENSCL, CCCF, (Chimie-C7), CS 90108, 59652 Villeneuve d’Ascq Cedex, France
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130
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Arrowsmith M, Crimmin MR, Hill MS, Lomas SL, MacDougall DJ, Mahon MF. Catalytic and Stoichiometric Cumulene Formation within Dimeric Group 2 Acetylides. Organometallics 2013. [DOI: 10.1021/om400678d] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Merle Arrowsmith
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K
| | - Mark R. Crimmin
- Department of Chemistry, Imperial College London, Exhibition Road, South Kensington, London SW7
2AZ, U.K
| | - Michael S. Hill
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K
| | - Sarah L. Lomas
- 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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131
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Liu B, Roisnel T, Carpentier JF, Sarazin Y. Heteroleptic alkyl and amide iminoanilide alkaline earth and divalent rare earth complexes for the catalysis of hydrophosphination and (cyclo)hydroamination reactions. Chemistry 2013; 19:13445-62. [PMID: 23955798 DOI: 10.1002/chem.201301464] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Indexed: 11/10/2022]
Abstract
[{N^N}M(X)(thf)n] alkyl (X=CH(SiMe3)2) and amide (X=N(SiMe3)2) complexes of alkaline earths (M=Ca, Sr, Ba) and divalent rare earths (Yb(II) and Eu(II) ) bearing an iminoanilide ligand ({N^N}(-)) are presented. Remarkably, these complexes proved to be kinetically stable in solution. X-ray diffraction studies allowed us to establish size-structure trends. Except for one case of oxidation with [{N^N}Yb(II){N(SiMe3)2}(thf)], all these complexes are stable under the catalytic conditions and constitute effective precatalysts for the cyclohydroamination of terminal aminoalkenes and the intermolecular hydroamination and intermolecular hydrophosphination of activated alkenes. Metals with equal sizes across alkaline earth and rare earth families display almost identical apparent catalytic activity and selectivity. Hydrocarbyl complexes are much better catalyst precursors than their amido analogues. In the case of cyclohydroamination, the apparent activity decreases with metal size: Ca>Sr>Ba, and the kinetic rate law agrees with R(CHA) =k[precatalyst](1)[aminoalkene](1). The intermolecular hydroamination and hydrophosphination of styrene are anti-Markovnikov regiospecific. In both cases, the apparent activity increases with the ionic radius (Ca<Sr<Ba) but the rate laws are different, and obey R(HA) =k[styrene](1)[amine](1)[precatalyst](1) and R(HP) =k[styrene](1)[HPPh2 ](0)[precatalyst](1), respectively. Mechanisms compatible with the rate laws and kinetic isotopic effects are proposed. [{N^N}Ba{N(SiMe3)2}(thf)2] (3) and [{N^N}Ba{CH(SiMe3)2}(thf)2] (10) are the first efficient Ba-based precatalysts for intermolecular hydroamination and hydrophosphination, and display activity values that are above those reported so far. The potential of the precatalysts for C-N and C-P bond formation is detailed and a rare cyclohydroamination-intermolecular hydroamination "domino" sequence is presented.
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Affiliation(s)
- Bo Liu
- Organometallics: Materials and Catalysis, Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes 1, Campus de Beaulieu, 35042 Rennes Cedex (France), Fax: (+33) 223-236-939
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132
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Saha D, Maity T, Das S, Koner S. A magnesium-based multifunctional metal-organic framework: synthesis, thermally induced structural variation, selective gas adsorption, photoluminescence and heterogeneous catalytic study. Dalton Trans 2013; 42:13912-22. [PMID: 23925708 DOI: 10.1039/c3dt51509e] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Three magnesium based carboxylate framework systems were prepared through a temperature-dependent synthesis. The compounds were synthesized by a hydrothermal method and characterized by single crystal X-ray diffraction analysis. A stepwise increase in the temperature of the medium resulted a stepwise increase in the dimensionality of the network, ultimately leading to the formation of a new 2D layered alkaline earth metal-organic framework (MOF) compound, {[Mg2(HL)2(H2O)4]·H2O}n (1) (H3L = pyrazole-3,5-dicarboxylate). Compound 1 selectively adsorbs hydrogen (H2) (ca. 0.56 wt% at 77 K) over nitrogen at 1 atm and demonstrates a strong blue fluorescent emission band at 480 nm (λ(max)) upon excitation at 270 nm. Notably, the 2D framework compound efficiently catalyzes the aldol condensation reactions of various aromatic aldehydes with ketones in a heterogeneous medium under environmentally friendly conditions. The catalyst can be recycled and reused several times without any significant loss of activity.
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Affiliation(s)
- Debraj Saha
- Department of Chemistry, Jadavpur University, Kolkata 700 032, India.
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133
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Meyer VJ, Fu L, Marquardt F, Niggemann M. Calcium-Catalyzed Cycloisomerization of Enynes. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300253] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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134
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Nguyen TM, Nicewicz DA. Anti-Markovnikov hydroamination of alkenes catalyzed by an organic photoredox system. J Am Chem Soc 2013; 135:9588-91. [PMID: 23768239 DOI: 10.1021/ja4031616] [Citation(s) in RCA: 236] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Herein we report a metal-free method for the direct anti-Markovnikov hydroamination of unsaturated amines. Irradiation of the amine substrates with visible light in the presence of catalytic quantities of easily synthesized 9-mesityl-10-methylacridinium tetrafluoroborate and thiophenol as a hydrogen-atom donor furnished the nitrogen-containing heterocycles with complete regiocontrol. Two examples of intermolecular anti-Markovnikov alkene hydroamination are also disclosed.
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Affiliation(s)
- Tien M Nguyen
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, USA
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135
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Manna K, Everett WC, Schoendorff G, Ellern A, Windus TL, Sadow AD. Highly enantioselective zirconium-catalyzed cyclization of aminoalkenes. J Am Chem Soc 2013; 135:7235-50. [PMID: 23631736 DOI: 10.1021/ja4000189] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Aminoalkenes are catalytically cyclized in the presence of cyclopentadienylbis(oxazolinyl)borato group 4 complexes {PhB(C5H4)(Ox(R))2}M(NMe2)2 (M = Ti, Zr, Hf; Ox(R) = 4,4-dimethyl-2-oxazoline, 4S-isopropyl-5,5-dimethyl-2-oxazoline, 4S-tert-butyl-2-oxazoline) at room temperature and below, affording five-, six-, and seven-membered N-heterocyclic amines with enantiomeric excesses of >90% in many cases and up to 99%. Mechanistic investigations of this highly selective system employed synthetic tests, kinetics, and stereochemistry. Secondary aminopentene cyclizations require a primary amine (1-2 equiv vs catalyst). Aminoalkenes are unchanged in the presence of a zirconium monoamido complex {PhB(C5H4)(Ox(4S-iPr,Me2))2}Zr(NMe2)Cl or a cyclopentadienylmono(oxazolinyl)borato zirconium diamide {Ph2B(C5H4)(Ox(4S-iPr,Me2))}Zr(NMe2)2. Plots of initial rate versus [substrate] show a rate dependence that evolves from first-order at low concentration to zero-order at high concentration, and this is consistent with a reversible substrate-catalyst interaction preceding an irreversible step. Primary kinetic isotope effects from substrate conversion measurements (k'obs((H))/k'obs((D)) = 3.3 ± 0.3) and from initial rate analysis (k2((H))/k2((D)) = 2.3 ± 0.4) indicate that a N-H bond is broken in the turnover-limiting and irreversible step of the catalytic cycle. Asymmetric hydroamination/cyclization of N-deutero-aminoalkenes provides products with higher optical purities than obtained with N-proteo-aminoalkenes. Transition state theory, applied to the rate constant k2 that characterizes the irreversible step, provides activation parameters consistent with a highly organized transition state (ΔS(++) = -43(7) cal·mol(-1) K(-1)) and a remarkably low enthalpic barrier (ΔH(++) = 6.7(2) kcal·mol(-1)). A six-centered, concerted transition state for C-N and C-H bond formation and N-H bond cleavage involving two amidoalkene ligands is proposed as most consistent with the current data.
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Affiliation(s)
- Kuntal Manna
- Department of Chemistry and U.S. Department of Energy Ames Laboratory, Iowa State University, Ames, Iowa 50011, USA
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136
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Glock C, Younis FM, Ziemann S, Görls H, Imhof W, Krieck S, Westerhausen M. 2,6-Diisopropylphenylamides of Potassium and Calcium: A Primary Amido Ligand in s-Block Metal Chemistry with an Unprecedented Catalytic Reactivity. Organometallics 2013. [DOI: 10.1021/om4001007] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Carsten Glock
- Institut für Anorganische
und Analytische Chemie, Friedrich-Schiller-Universität Jena, Humboldtstrasse 8, D-07743 Jena, Germany
| | - Fadi M. Younis
- Institut für Anorganische
und Analytische Chemie, Friedrich-Schiller-Universität Jena, Humboldtstrasse 8, D-07743 Jena, Germany
| | - Steffen Ziemann
- Institut für Anorganische
und Analytische Chemie, Friedrich-Schiller-Universität Jena, Humboldtstrasse 8, D-07743 Jena, Germany
| | - Helmar Görls
- Institut für Anorganische
und Analytische Chemie, Friedrich-Schiller-Universität Jena, Humboldtstrasse 8, D-07743 Jena, Germany
| | - Wolfgang Imhof
- Institut für Integrierte Naturwissenschaften,
Abteilung Chemie, Universität Koblenz-Landau, Universitätsstrasse 1, D-56070 Koblenz, Germany
| | - Sven Krieck
- Institut für Anorganische
und Analytische Chemie, Friedrich-Schiller-Universität Jena, Humboldtstrasse 8, D-07743 Jena, Germany
| | - Matthias Westerhausen
- Institut für Anorganische
und Analytische Chemie, Friedrich-Schiller-Universität Jena, Humboldtstrasse 8, D-07743 Jena, Germany
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137
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Wu L, Fleischer I, Jackstell R, Beller M. Efficient and Regioselective Ruthenium-catalyzed Hydro-aminomethylation of Olefins. J Am Chem Soc 2013; 135:3989-96. [DOI: 10.1021/ja312271c] [Citation(s) in RCA: 82] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lipeng Wu
- Leibniz-Institut für Katalyse
e.V., an der Universität Rostock, Albert-Einstein-Str. 29a,
18059 Rostock, Germany
| | - Ivana Fleischer
- Leibniz-Institut für Katalyse
e.V., an der Universität Rostock, Albert-Einstein-Str. 29a,
18059 Rostock, Germany
| | - Ralf Jackstell
- Leibniz-Institut für Katalyse
e.V., an der Universität Rostock, Albert-Einstein-Str. 29a,
18059 Rostock, Germany
| | - Matthias Beller
- Leibniz-Institut für Katalyse
e.V., an der Universität Rostock, Albert-Einstein-Str. 29a,
18059 Rostock, Germany
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138
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Reznichenko AL, Hultzsch KC. C1-Symmetric Rare-Earth-Metal Aminodiolate Complexes for Intra- and Intermolecular Asymmetric Hydroamination of Alkenes. Organometallics 2013. [DOI: 10.1021/om3010614] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Alexander L. Reznichenko
- Department of Chemistry & Chemical Biology, Rutgers, The State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854-8087, United States
| | - Kai C. Hultzsch
- Department of Chemistry & Chemical Biology, Rutgers, The State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854-8087, United States
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139
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Arrowsmith M, Hill MS, Kociok-Köhn G. Magnesium catalysis of imine hydroboration. Chemistry 2013; 19:2776-83. [PMID: 23307492 DOI: 10.1002/chem.201203190] [Citation(s) in RCA: 119] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2012] [Indexed: 11/11/2022]
Abstract
The β-diketiminato magnesium alkyl complex [LMgnBu] (L=CH{CMe(NDipp)}(2), Dipp=diisopropylphenyl) is shown to be a highly effective precatalyst for the hydroboration of alkyl and aryl substituted aldimines and ketimines with pinacol borane (HBpin). Catalysis is proposed to occur through a sequence of Mg-N/B-H metathesis and rate-determining Mg-H/N=C insertion steps, a proposal strongly supported by stoichiometric studies and kinetic analysis. The reactions are observed to proceed through the intermediacy of well-defined magnesium amides, two examples of which have been isolated and structurally characterized. Mechanistic investigations suggest that the catalytic rate-determining process occurs at an isolated magnesium center and requires the presence of two molecules of the imine substrate for effective turnover. This latter observation is rationalized as a requirement for the secondary substrate molecule to displace HBpin from the coordination sphere of the catalytic magnesium center.
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Affiliation(s)
- Merle Arrowsmith
- Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, UK
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140
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Liu B, Roisnel T, Carpentier JF, Sarazin Y. Cyclohydroamination of Aminoalkenes Catalyzed by Disilazide Alkaline-Earth Metal Complexes: Reactivity Patterns and Deactivation Pathways. Chemistry 2013; 19:2784-802. [DOI: 10.1002/chem.201203562] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2012] [Indexed: 11/07/2022]
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141
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Hill MS, Liptrot DJ, MacDougall DJ, Mahon MF, Robinson TP. Hetero-dehydrocoupling of silanes and amines by heavier alkaline earth catalysis. Chem Sci 2013. [DOI: 10.1039/c3sc51797g] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
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142
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Baillie SE, Blair VL, Bradley TD, Clegg W, Cowan J, Harrington RW, Hernán-Gómez A, Kennedy AR, Livingstone Z, Hevia E. Isomeric and chemical consequences of the direct magnesiation of 1,3-benzoazoles using β-diketiminate-stabilized magnesium bases. Chem Sci 2013. [DOI: 10.1039/c3sc22326d] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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143
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144
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Liang Y, Erichsen ES, Anwander R. Functionalization of large-pore periodic mesoporous silicas: metal silylamide and isopropoxide molecular grafting and secondary surface ligand exchange. Dalton Trans 2013; 42:6922-35. [DOI: 10.1039/c3dt33041a] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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145
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Bellham P, Hill MS, Kociok-Köhn G, Liptrot DJ. Alkaline earth alkyl insertion chemistry of in situ generated aminoboranes. Dalton Trans 2013; 42:737-45. [DOI: 10.1039/c2dt31849k] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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146
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Mukherjee A, Sen TK, Mandal SK, Maity B, Koley D. Construction of oxygen-bridged multimetallic assembly: dual catalysts for hydroamination reactions. RSC Adv 2013. [DOI: 10.1039/c2ra21778c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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147
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Liu B, Carpentier JF, Sarazin Y. Highly effective alkaline earth catalysts for the sterically governed hydrophosphonylation of aldehydes and nonactivated ketones. Chemistry 2012; 18:13259-64. [PMID: 22976437 DOI: 10.1002/chem.201201489] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2012] [Revised: 07/17/2012] [Indexed: 11/10/2022]
Affiliation(s)
- Bo Liu
- Organometallics: Materials and Catalysis, Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS, Université de Rennes 1, Campus de Beaulieu, 35042 Rennes Cedex, France
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148
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Brinkmann C, Barrett AGM, Hill MS, Procopiou PA, Reid S. Alkaline Earth Catalysis of Alkynyl Alcohol Hydroalkoxylation/Cyclization. Organometallics 2012. [DOI: 10.1021/om3008663] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Christine Brinkmann
- Department of Chemistry, Imperial College London, Exhibition Road, South Kensington,
London, SW7 2AZ U.K
| | - Anthony G. M. Barrett
- Department of Chemistry, Imperial College London, Exhibition Road, South Kensington,
London, SW7 2AZ U.K
| | - Michael S. Hill
- Department
of Chemistry, University of Bath, Claverton
Down, Bath, BA2 7AY U.K
| | - Panayiotis A. Procopiou
- GlaxoSmithKline Medicines Research Center, Gunnels Wood Road, Stevenage, Hertfordshire,
SG1 2NY U.K
| | - Stephanie Reid
- Department of Chemistry, Imperial College London, Exhibition Road, South Kensington,
London, SW7 2AZ U.K
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149
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Maity T, Saha D, Das S, Koner S. Barium Carboxylate Metal-Organic Framework - Synthesis, X-ray Crystal Structure, Photoluminescence and Catalytic Study. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201200417] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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150
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Mukherjee A, Sen TK, Ghorai PK, Samuel PP, Schulzke C, Mandal SK. Phenalenyl-based organozinc catalysts for intramolecular hydroamination reactions: a combined catalytic, kinetic, and mechanistic investigation of the catalytic cycle. Chemistry 2012; 18:10530-45. [PMID: 22807308 DOI: 10.1002/chem.201200868] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2012] [Indexed: 11/10/2022]
Abstract
Herein, we report the synthesis and characterization of two organozinc complexes that contain symmetrical phenalenyl (PLY)-based N,N-ligands. The reactions of phenalenyl-based ligands with ZnMe(2) led to the formation of organozinc complexes [N(Me),N(Me)-PLY]ZnMe (1) and [N(iPr),N(iPr)-PLY]ZnMe (2) under the evolution of methane. Both complexes (1 and 2) were characterized by NMR spectroscopy and elemental analysis. The solid-state structures of complexes 1 and 2 were determined by single-crystal X-ray crystallography. Complexes 1 and 2 were used as catalysts for the intramolecular hydroamination of unactivated primary and secondary aminoalkenes. A combined approach of NMR spectroscopy and DFT calculations was utilized to obtain better insight into the mechanistic features of the zinc-catalyzed hydroamination reactions. The progress of the catalysis for primary and secondary aminoalkene substrates with catalyst 2 was investigated by detailed kinetic studies, including kinetic isotope effect measurements. These results suggested pseudo-first-order kinetics for both primary and secondary aminoalkene activation processes. Eyring and Arrhenius analyses for the cyclization of a model secondary aminoalkene substrate afforded ΔH(≠) =11.3 kcal mol(-1) , ΔS(≠) =-35.75 cal K(-1) mol(-1) , and E(a) =11.68 kcal mol(-1) . Complex 2 exhibited much-higher catalytic activity than complex 1 under identical reaction conditions. The in situ NMR experiments supported the formation of a catalytically active zinc cation and the DFT calculations showed that more active catalyst 2 generated a more stable cation. The stability of the catalytically active zinc cation was further supported by an in situ recycling procedure, thereby confirming the retention of catalytic activity of compound 2 for successive catalytic cycles. The DFT calculations showed that the preferred pathway for the zinc-catalyzed hydroamination reactions is alkene activation rather than the alternative amine-activation pathway. A detailed investigation with DFT methods emphasized that the remarkably higher catalytic efficiency of catalyst 2 originated from its superior stability and the facile formation of its cation compared to that derived from catalyst 1.
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Affiliation(s)
- Arup Mukherjee
- Department of Chemical Sciences, Indian Institute of Science Education and Research-Kolkata, Mohanpur-741252, India
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