1
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Pathania V, Roy VJ, Roy SR. Transforming Non-innocent Phenalenyl to a Potent Photoreductant: Captivating Reductive Functionalization of Aryl Halides through Visible-Light-Induced Electron Transfer Processes. J Org Chem 2022; 87:16550-16566. [DOI: 10.1021/acs.joc.2c02241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- Vishali Pathania
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Vishal Jyoti Roy
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Sudipta Raha Roy
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
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2
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Allen MA, Ly HM, O'Keefe GF, Beauchemin AM. A redox-enabled strategy for intramolecular hydroamination. Chem Sci 2022; 13:7264-7268. [PMID: 35799811 PMCID: PMC9214914 DOI: 10.1039/d2sc00481j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 05/27/2022] [Indexed: 12/18/2022] Open
Abstract
Metal- or acid-catalyzed intramolecular hydroamination and Cope-type intramolecular hydroamination, a distinct concerted approach using hydroxylamines, typically suffer from significant synthetic limitations. Herein we report a process for intramolecular hydroamination that uses a redox-enabled strategy relying on efficient in situ generation of hydroxylamines by oxidation, followed by Cope-type hydroamination, then reduction of the resulting pyrrolidine N-oxide. The steps are performed sequentially in a single pot, no catalyst is required, the conditions are mild, the process is highly functional group tolerant, and no chromatography is generally required for isolation. A robustness screen and a gram-scale example further support the practicality of this approach. A redox strategy enables hydroaminations: mild conditions allows efficient hydroxylamine formation & cyclization, then B2(OH)4 as reductant also facilitates isolation!![]()
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Affiliation(s)
- Meredith A Allen
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa 10 Marie-Curie Ottawa ON K1N 6N5 Canada
| | - Huy M Ly
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa 10 Marie-Curie Ottawa ON K1N 6N5 Canada
| | - Geneviève F O'Keefe
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa 10 Marie-Curie Ottawa ON K1N 6N5 Canada
| | - André M Beauchemin
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa 10 Marie-Curie Ottawa ON K1N 6N5 Canada
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3
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Ahmed J, Mandal SK. Phenalenyl Radical: Smallest Polycyclic Odd Alternant Hydrocarbon Present in the Graphene Sheet. Chem Rev 2022; 122:11369-11431. [PMID: 35561295 DOI: 10.1021/acs.chemrev.1c00963] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Phenalenyl, a zigzag-edged odd alternant hydrocarbon unit can be found in the graphene nanosheet. Hückel molecular orbital calculations indicate the presence of a nonbonding molecular orbital (NBMO), which originates from the linear combination of atomic orbitals (LCAO) arising from 13 carbon atoms of the phenalenyl molecule. Three redox states (cationic, neutral radical, and anionic) of the phenalenyl-based molecules were attributed to the presence of this NBMO. The cationic state can undergo two consecutive reductions to result in neutral radical and anionic states, stepwise, respectively. The phenalenyl-based radicals were found as crucial building blocks and attracted the attention of various research fields such as organic synthesis, material science, computation, and device physics. From 2012 onward, a strategy was devised using the cationic state of phenalenyl-based molecules and in situ generated phenalenyl radicals, which created a new domain of catalysis. The in situ generated phenalenyl radicals were utilized for the single electron transfer (SET) process resulting in redox catalysis. This emerging range of applications rejuvenates the more than six decades-old phenalenyl chemistry. This review captures such developments ranging from fundamental understanding to multidirectional applications of phenalenyl-based radicals.
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Affiliation(s)
- Jasimuddin Ahmed
- Department of Chemical Sciences, Indian Institute of Science Education and Research-Kolkata, Mohanpur 741246, India
| | - Swadhin K Mandal
- Department of Chemical Sciences, Indian Institute of Science Education and Research-Kolkata, Mohanpur 741246, India
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4
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Kamboj N, Mali G, Lama P, Erande RD, Metre RK. Designing a Redox Noninnocent Phenalenyl-Based Copper(II) Complex: An Autotandem Catalyst for the Selective Oxidation of Polycyclic Aromatic Hydrocarbons (PAHs). ACS OMEGA 2022; 7:8789-8797. [PMID: 35309439 PMCID: PMC8928492 DOI: 10.1021/acsomega.1c07051] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 02/18/2022] [Indexed: 05/25/2023]
Abstract
A square-planar [CuIIL] complex 1, based on the redox-active phenalenyl unit LH2 = 9,9'-(ethane-1,2-diylbis(azanediyl))bis(1H-phenalen-1-one), is prepared and structurally characterized by single-crystal X-ray diffraction analysis. Complex 1 crystallizes at room temperature with the P1 space group. The molecular structure of 1 reveals the presence of intriguing C-H···Cu intermolecular anagostic interactions of the order ∼2.7715 Å. Utilizing the presence of anagostic interactions and the free nonbonding molecular orbitals (NBMOs) of the closed-shell phenalenyl unit in 1, the oxidation reactions of some industrially important polycyclic aromatic hydrocarbons (PAHs) in the presence of the [CuIIL] complex under very mild conditions have been reported. The direct conversion of anthracene-9-carbaldehyde to 9,10-anthraquinone in one step concludes that the catalyst shows dual activity in the chemical transformations. This also includes the first report of a "single-step" catalytic transformation of pyrene-1-carbaldehyde to the synthetically difficult pyren-4-ol, a precursor for the synthesis of several novel fluorescent probes for cell imaging.
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Affiliation(s)
- Nisha Kamboj
- Department
of Chemistry, Indian Institute of Technology
Jodhpur, Jodhpur 342037, Rajasthan, India
| | - Ghanshyam Mali
- Department
of Chemistry, Indian Institute of Technology
Jodhpur, Jodhpur 342037, Rajasthan, India
| | - Prem Lama
- CSIR-Indian
Institute of Petroleum, Haridwar Road, Mokhampur, Dehradun 248005, India
| | - Rohan D. Erande
- Department
of Chemistry, Indian Institute of Technology
Jodhpur, Jodhpur 342037, Rajasthan, India
| | - Ramesh K. Metre
- Department
of Chemistry, Indian Institute of Technology
Jodhpur, Jodhpur 342037, Rajasthan, India
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5
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Earth-Abundant 3d Transition Metal Catalysts for Hydroalkoxylation and Hydroamination of Unactivated Alkenes. Catalysts 2021. [DOI: 10.3390/catal11060674] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
This review summarizes the most noteworthy achievements in the field of C–O and C–N bond formation by hydroalkoxylation and hydroamination reactions on unactivated alkenes (including 1,2- and 1,3-dienes) promoted by earth-abundant 3d transition metal catalysts based on manganese, iron, cobalt, nickel, copper and zinc. The relevant literature from 2012 until early 2021 has been covered.
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6
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Dutta P, Kumari S, Paulraj J, Sharma R, Vijaykumar G, Sankar Das H, P S, Sil S, Mandal SK, Sengupta A, Sarkar A. Phenalenyl based platinum anticancer compounds with superior efficacy: design, synthesis, characterization, and interaction with nuclear DNA. NEW J CHEM 2021. [DOI: 10.1039/d0nj06229d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
New and efficacious phenalenyl based Pt(ii) compounds have been used to design an “easy to use tool” for mechanistic understanding.
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Affiliation(s)
- Pradip Dutta
- India Innovation Research Center
- Delhi 110092
- India
| | - Smita Kumari
- India Innovation Research Center
- Delhi 110092
- India
| | | | | | - Gonela Vijaykumar
- Department of Chemical Sciences
- Indian Institute of Science Education and Research (IISER)-Kolkata
- Mohanpur-741252
- India
| | - Hari Sankar Das
- Department of Chemical Sciences
- Indian Institute of Science Education and Research (IISER)-Kolkata
- Mohanpur-741252
- India
| | - Sreejyothi P
- Department of Chemical Sciences
- Indian Institute of Science Education and Research (IISER)-Kolkata
- Mohanpur-741252
- India
| | - Swagata Sil
- Department of Chemical Sciences
- Indian Institute of Science Education and Research (IISER)-Kolkata
- Mohanpur-741252
- India
| | - Swadhin K. Mandal
- Department of Chemical Sciences
- Indian Institute of Science Education and Research (IISER)-Kolkata
- Mohanpur-741252
- India
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7
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Colonna P, Bezzenine S, Gil R, Hannedouche J. Alkene Hydroamination
via
Earth‐Abundant Transition Metal (Iron, Cobalt, Copper and Zinc) Catalysis: A Mechanistic Overview. Adv Synth Catal 2020. [DOI: 10.1002/adsc.201901157] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Pierre Colonna
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO)CNRS UMR 8182Université Paris-Sud Université Paris-Saclay 91405 Orsay cedex France
| | - Sophie Bezzenine
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO)CNRS UMR 8182Université Paris-Sud Université Paris-Saclay 91405 Orsay cedex France
| | - Richard Gil
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO)CNRS UMR 8182Université Paris-Sud Université Paris-Saclay 91405 Orsay cedex France
| | - Jérôme Hannedouche
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO)CNRS UMR 8182Université Paris-Sud Université Paris-Saclay 91405 Orsay cedex France
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8
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Bulky guanidinate calcium and zinc complexes as catalysts for the intramolecular hydroamination. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.02.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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9
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Mitra A, Bose S, Biswas S, Bandyopadhyay P, Sarkar A. Design, Synthesis and Photochemical Properties of a Phenalenone-Based pH Sensor: Switchable pH Sensing in Four Detectable Channels. Chempluschem 2018; 83:832-837. [PMID: 31950683 DOI: 10.1002/cplu.201800420] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Indexed: 11/10/2022]
Abstract
The synthesis and pH-sensing property of a novel phenalenone-based compound, 9-(4-hydroxyphenylamino)-1-oxo-phenalenone (HPAP), is reported. The newly synthesized compound is capable of functioning as a pH sensor in the region of pH 7 to 12. The sensor can be used as a colorimetric indicator in the transition from pH 10 to pH 11. The sensor is able to function in four detectable channels. All four channels (UV, emission, colorimetric/visible and photoluminescence) have been shown to be reversible, thus implying the reuse of this single-molecule sensor and indicator for several experiments. Mechanistic investigations have been performed by UV, NMR and DFT studies which indicate that a photoinduced electron transfer (PET) based mechanism could be operative. Straightforward and cost-effective application of the sensor in thin-layer chromatography has also been established.
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Affiliation(s)
- Amritaa Mitra
- Department of Chemistry, University of North Bengal, Raja Rammohunpur, Siliguri 734013, West Bengal, India
| | - Suranjana Bose
- Department of Chemistry, University of North Bengal, Raja Rammohunpur, Siliguri 734013, West Bengal, India
| | - Sachidulal Biswas
- Department of Chemistry, University of North Bengal, Raja Rammohunpur, Siliguri 734013, West Bengal, India
| | - Pinaki Bandyopadhyay
- Department of Chemistry, University of North Bengal, Raja Rammohunpur, Siliguri 734013, West Bengal, India
| | - Arindam Sarkar
- India Innovation Research Centre, 465 Patparganj Industrial Area, Delhi, 110092, India
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10
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Banik A, Paira R, Shaw BK, Vijaykumar G, Mandal SK. Accessing Heterobiaryls through Transition-Metal-Free C-H Functionalization. J Org Chem 2018; 83:3236-3244. [PMID: 29436824 DOI: 10.1021/acs.joc.8b00140] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Herein we report a transition-metal-free synthetic protocol for heterobiaryls, one of the most important pharmacophores in the modern drug industry, employing a new multidonor phenalenyl (PLY)-based ligand. The current procedure offers a wide substrate scope (24 examples) with a low catalyst loading resulting in an excellent product yield (up to 95%). The reaction mechanism involves a single electron transfer (SET) from a phenalenyl-based radical to generate a reactive heteroaryl radical. To establish the mechanism, we have isolated the catalytically active SET initiator, characterizing by a magnetic study.
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Affiliation(s)
- Ananya Banik
- Department of Chemical Sciences , Indian Institute of Science Education and Research , Kolkata , Mohanpur 741246 , India
| | - Rupankar Paira
- Department of Chemistry , Maharaja Manindra Chandra College , 20 Ramkanto Bose Street , Kolkata 700003 , India
| | - Bikash Kumar Shaw
- Department of Chemical Sciences , Indian Institute of Science Education and Research , Kolkata , Mohanpur 741246 , India
| | - Gonela Vijaykumar
- Department of Chemical Sciences , Indian Institute of Science Education and Research , Kolkata , Mohanpur 741246 , India
| | - Swadhin K Mandal
- Department of Chemical Sciences , Indian Institute of Science Education and Research , Kolkata , Mohanpur 741246 , India
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11
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Chen J, Goforth SK, McKeown BA, Gunnoe TB. Brønsted acid-catalysed intramolecular hydroamination of unactivated alkenes: metal triflates as an in situ source of triflic acid. Dalton Trans 2018; 46:2884-2891. [PMID: 28194456 DOI: 10.1039/c6dt04710f] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hydroamination of alkenes or alkynes is one of the most straightforward methods to form C-N bonds and nitrogen-containing heterocycles. A simple Lewis acid Al(OTf)3 was found to be an effective precatalyst for the hydroamination of unactivated primary and secondary alkenylamines between 110 and 150 °C. Subsequent studies show that other metal triflates are also effective precatalysts for the hydroamination reactions. For metal triflate salts, mechanistic studies, including kinetics, are consistent with the in situ generation of triflic acid, which likely serves as the active catalyst.
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Affiliation(s)
- Junqi Chen
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, USA.
| | - Sarah K Goforth
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, USA.
| | - Bradley A McKeown
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, USA.
| | - T Brent Gunnoe
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, USA.
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12
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Bezzenine-Lafollée S, Gil R, Prim D, Hannedouche J. First-Row Late Transition Metals for Catalytic Alkene Hydrofunctionalisation: Recent Advances in C-N, C-O and C-P Bond Formation. Molecules 2017; 22:E1901. [PMID: 29113059 PMCID: PMC6150243 DOI: 10.3390/molecules22111901] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Revised: 10/12/2017] [Accepted: 10/12/2017] [Indexed: 12/31/2022] Open
Abstract
This review provides an outline of the most noteworthy achievements in the area of C-N, C-O and C-P bond formation by hydroamination, hydroalkoxylation, hydrophosphination, hydrophosphonylation or hydrophosphinylation reaction on unactivated alkenes (including 1,2- and 1,3-dienes) promoted by first-row late transition metal catalytic systems based on manganese, iron, cobalt, nickel, copper and zinc. The relevant literature from 2009 until mid-2017 has been covered.
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Affiliation(s)
- Sophie Bezzenine-Lafollée
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), UMR 8182, University of Paris-Sud, F-91405 Orsay, France.
| | - Richard Gil
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), UMR 8182, University of Paris-Sud, F-91405 Orsay, France.
| | - Damien Prim
- Institut Lavoisier de Versailles (ILV), UMR 8180, Université Versailles Saint-Quentin, F-78035 Versailles, France.
| | - Jérôme Hannedouche
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), UMR 8182, University of Paris-Sud, F-91405 Orsay, France.
- Centre National de la Recherche Scientifique (CNRS), UMR8000, Laboratoire de Chimie Physique, F-91405 Orsay, France.
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13
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Mukherjee A, Sau SC, Mandal SK. Exploring Closed-Shell Cationic Phenalenyl: From Catalysis to Spin Electronics. Acc Chem Res 2017; 50:1679-1691. [PMID: 28665582 DOI: 10.1021/acs.accounts.7b00141] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The odd alternant hydrocarbon phenalenyl (PLY) can exist in three different forms, a closed-shell cation, an open-shell radical, and a closed-shell anion, using its nonbonding molecular orbital (NBMO). The chemistry of PLY-based molecules began more than five decades ago, and so far, the progress has mainly involved the open-shell neutral radical state. Over the last two decades, we have witnessed the evolution of a range of PLY-based radicals generating an array of multifunctional materials. However, it has been admitted that the practical applications of PLY radicals are greatly challenged by the low stability of the open-shell (radical) state. Recently, we took a different route to establish the utility of these PLY molecules using the closed-shell cationic state. In such a design, the closed-shell unit of PLY can readily accept free electrons, stabilizing in its NBMO upon generation of the open-shell state of the molecule. Thus, one can synthetically avoid the unstable open-shell state but still take advantage of this state by in situ generating the radical through external electron transfer or spin injection into the empty NBMO. It is worth noting that such approaches using closed-shell phenalenyl have been missing in the literature. This Account focuses on our recent developments using the closed-shell cationic state of the PLY molecule and its application in broad multidisciplinary areas spanning from catalysis to spin electronics. We describe how this concept has been utilized to develop a variety of homogeneous catalysts. For example, this concept was used in designing an iron(III) PLY-based electrocatalyst for a single-compartment H2O2 fuel cell, which delivered the best electrocatalytic activity among previously reported iron complexes, organometallic catalysts for various homogeneous organic transformations (hydroamination and polymerization), an organic Lewis acid catalyst for the ring opening of epoxides, and transition-metal-free C-H functionalization catalysts. Moreover, this concept of using the empty NBMO present in the closed-shell cationic state of the PLY moiety to capture electron(s) was further extended to an entirely different area of spin electronics to design a PLY-based spin-memory device, which worked by a spin-filtration mechanism using an organozinc compound based on a PLY backbone deposited over a ferromagnetic substrate. In this Account, we summarize our recent efforts to understand how this unexplored closed-shell state of the phenalenyl molecule, which has been known for over five decades, can be utilized in devising an array of materials that not only are important from an organometallic chemistry or organic chemistry point of view but also provide new understanding for device physics.
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Affiliation(s)
- Arup Mukherjee
- Department
of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts
Avenue, Cambridge, Massachusetts 02139, United States
| | - Samaresh Chandra Sau
- Department
of Chemical Sciences, Indian Institute of Science Education and Research, Kolkata, Mohanpur 741246, India
| | - Swadhin K. Mandal
- Department
of Chemical Sciences, Indian Institute of Science Education and Research, Kolkata, Mohanpur 741246, India
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14
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Rodriguez-Ruiz V, Carlino R, Bezzenine-Lafollée S, Gil R, Prim D, Schulz E, Hannedouche J. Recent developments in alkene hydro-functionalisation promoted by homogeneous catalysts based on earth abundant elements: formation of C-N, C-O and C-P bond. Dalton Trans 2016; 44:12029-59. [PMID: 25803322 DOI: 10.1039/c5dt00280j] [Citation(s) in RCA: 106] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
This Perspective article provides an overview of the recent advancements in the field of intra- and inter-molecular C-N, C-O and C-P bond formation by hydroamination, hydroalkoxylation, hydrophosphination, hydrophosphonylation or hydrophosphinylation of unactivated alkenes, including allenes, 1,3-dienes and strained alkenes, promoted by (chiral) homogeneous catalysts based on earth abundant elements of the s and p blocks, the first row transition metals and the rare-earth metals. The relevant literature from 2009 until late 2014 has been covered.
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15
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Paira R, Singh B, Hota PK, Ahmed J, Sau SC, Johnpeter JP, Mandal SK. Open-Shell Phenalenyl in Transition Metal-Free Catalytic C–H Functionalization. J Org Chem 2016; 81:2432-41. [DOI: 10.1021/acs.joc.6b00002] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Rupankar Paira
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Kolkata, Mohanpur-741246, India
| | - Bhagat Singh
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Kolkata, Mohanpur-741246, India
| | - Pradip Kumar Hota
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Kolkata, Mohanpur-741246, India
| | - Jasimuddin Ahmed
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Kolkata, Mohanpur-741246, India
| | - Samaresh Chandra Sau
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Kolkata, Mohanpur-741246, India
| | - Justin P. Johnpeter
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Kolkata, Mohanpur-741246, India
| | - Swadhin K. Mandal
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Kolkata, Mohanpur-741246, India
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16
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Gallegos C, Camacho R, Valiente M, Cuenca T, Cano J. Cyclopentadienyl-based Mg complexes in the intramolecular hydroamination of aminoalkenes: mechanistic evidence for cationic versus neutral magnesium derivatives. Catal Sci Technol 2016. [DOI: 10.1039/c5cy01040c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Mechanistic evidence in the catalytic hydroamination of aminoalkenes for a cationic magnesium derivative.
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Affiliation(s)
- Carlos Gallegos
- Dpto de Química Inorgánica
- Universidad de Alcalá
- 28871 Alcalá de Henares
- Spain
| | - Ruth Camacho
- Dpto de Química Inorgánica
- Universidad de Alcalá
- 28871 Alcalá de Henares
- Spain
| | - Mercedes Valiente
- Dpto de Química Física
- Universidad de Alcalá
- 28871 Alcalá de Henares
- Spain
| | - Tomás Cuenca
- Dpto de Química Inorgánica
- Universidad de Alcalá
- 28871 Alcalá de Henares
- Spain
| | - Jesús Cano
- Dpto de Química Inorgánica
- Universidad de Alcalá
- 28871 Alcalá de Henares
- Spain
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17
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18
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Zinc complexes chelated by bifunctional ketiminate ligands: Structure, reactivity and possible applications in initiation of ROP and copolymerization of epoxides with carbon dioxide. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2015.07.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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19
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Tobisch S. Aluminium-catalysed intramolecular hydroamination of aminoalkenes: computational perusal of alternative pathways for aminoalkene activation. Dalton Trans 2015; 44:12169-79. [PMID: 25801632 DOI: 10.1039/c5dt00121h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A comprehensive computational examination of alternatively plausible mechanistic pathways for the intramolecular hydroamination (HA) of aminoalkenes utilising a recently reported novel phenylene-diamine aluminium amido compound is presented. On the one hand, a proton-assisted concerted N-C/C-H bond-forming pathway to afford the cycloamine in a single step can be invoked, and, on the other, a stepwise σ-insertive pathway that involves a relatively fast, reversible migratory olefin 1,2-insertion step linked to a less rapid, irreversible Al-C alkyl bond protonolysis. The present study, which employs a sophisticated and reliable computational methodology, supports the prevailing mechanism to be a stepwise σ-insertive pathway. The predicted effective barrier for turnover-limiting aminolysis compares favourably with reported catalytic performance data. Non-competitive kinetic demands militates against the operation of the concerted proton-assisted pathway, which describes N-C bond-forming ring closure triggered by concomitant amino proton delivery at the C[double bond, length as m-dash]C linkage evolving through a six-centre transition state structure. The valuable insights into mechanistic intricacies of aluminium-mediated intramolecular HA reported herein will help guide the rational design of group 13 metal-based HA catalysts.
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Affiliation(s)
- Sven Tobisch
- School of Chemistry, University of St Andrews, Purdie Building, North Haugh, St Andrews, UK KY16 9ST.
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20
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Coman SM, Parvulescu VI. Nonprecious Metals Catalyzing Hydroamination and C–N Coupling Reactions. Org Process Res Dev 2015. [DOI: 10.1021/acs.oprd.5b00010] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Simona M. Coman
- Department of Organic Chemistry,
Biochemistry and Catalysis, Faculty of Chemistry, University of Bucharest, Bdul Regina Elisabeta 4-12, Bucharest 030016, Romania
| | - Vasile I. Parvulescu
- Department of Organic Chemistry,
Biochemistry and Catalysis, Faculty of Chemistry, University of Bucharest, Bdul Regina Elisabeta 4-12, Bucharest 030016, Romania
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21
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Tobisch S. Computational Mechanistic Elucidation of the Intramolecular Aminoalkene Hydroamination Catalysed by Iminoanilide Alkaline-Earth Compounds. Chemistry 2015; 21:6765-79. [DOI: 10.1002/chem.201500233] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Indexed: 11/06/2022]
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22
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Bernoud E, Lepori C, Mellah M, Schulz E, Hannedouche J. Recent advances in metal free- and late transition metal-catalysed hydroamination of unactivated alkenes. Catal Sci Technol 2015. [DOI: 10.1039/c4cy01716a] [Citation(s) in RCA: 140] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This Perspective article outlines some of the recent advancements in the development of (chiral) metal-free and late transition metal catalysts for hydroamination of unactivated alkenes.
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23
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Chilleck MA, Hartenstein L, Braun T, Roesky PW, Braun B. Cationic Zinc Organyls as Precatalysts for Hydroamination Reactions. Chemistry 2014; 21:2594-602. [DOI: 10.1002/chem.201405662] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Indexed: 11/08/2022]
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24
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Roy SR, Nijamudheen A, Pariyar A, Ghosh A, Vardhanapu PK, Mandal PK, Datta A, Mandal SK. Phenalenyl in a Different Role: Catalytic Activation through the Nonbonding Molecular Orbital. ACS Catal 2014. [DOI: 10.1021/cs5010695] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Sudipta Raha Roy
- Department
of Chemical Sciences, Indian Institute of Science Education and Research, 741252 Kolkata, Mohanpur-741246, India
| | - A. Nijamudheen
- Department
of Spectroscopy, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Jadavpur, 700032 Kolkata, West Bengal, India
| | - Anand Pariyar
- Department
of Chemical Sciences, Indian Institute of Science Education and Research, 741252 Kolkata, Mohanpur-741246, India
| | - Anup Ghosh
- Department
of Chemical Sciences, Indian Institute of Science Education and Research, 741252 Kolkata, Mohanpur-741246, India
| | - Pavan K. Vardhanapu
- Department
of Chemical Sciences, Indian Institute of Science Education and Research, 741252 Kolkata, Mohanpur-741246, India
| | - Prasun K. Mandal
- Department
of Chemical Sciences, Indian Institute of Science Education and Research, 741252 Kolkata, Mohanpur-741246, India
| | - Ayan Datta
- Department
of Spectroscopy, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Jadavpur, 700032 Kolkata, West Bengal, India
| | - Swadhin K. Mandal
- Department
of Chemical Sciences, Indian Institute of Science Education and Research, 741252 Kolkata, Mohanpur-741246, India
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