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Bandopadhyay N, Paramanik K, Sarkar G, Roy S, Panda SJ, Purohit CS, Biswas B, Das HS. Phenalenyl-ruthenium synergism for effectual catalytic transformations of primary amines to amides. Dalton Trans 2024; 53:13795-13804. [PMID: 39105500 DOI: 10.1039/d4dt01760a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/07/2024]
Abstract
The synthesis of amides holds great promise owing to their impeccable contributions as building blocks for highly valued functional derivatives. Herein, we disclose the design, synthesis and crystal structure of a mixed-ligand ruthenium(II) complex, [Ru(η6-Cym)(O,O-PLY)Cl], (1) where Cym = 1-isopropyl-4-methyl-benzene and O,O-PLY = deprotonated form of 9-hydroxy phenalenone (HO,O-PLY). The complex catalyzes the aerobic oxidation of various primary amines (RCH2NH2) to value-added amides (RCONH2) with excellent selectivity and efficiency under relatively mild conditions with common organic functional group tolerance. Structural, electrochemical, spectroscopic, and computational studies substantiate that the synergism between the redox-active ruthenium and π-Lewis acidic PLY moieties facilitate the catalytic oxidation of amines to amides. Additionally, the isolation and characterization of key intermediates during catalysis confirm two successive dehydrogenation steps leading to nitrile, which subsequently transform to the desired amide through hydration. The present synthetic approach is also extended to substitution-dependent tuning at PLY to tune the electronic nature of 1 and to assess substituent-mediated catalytic performance. The effect of substitution at the PLY moiety (5th position) leads to structural isomers, which were further evaluated for the catalytic transformations of amine to amides under similar reaction conditions.
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Affiliation(s)
- Nilaj Bandopadhyay
- Department of Chemistry, University of North Bengal, Darjeeling 734013, India.
| | | | - Gayetri Sarkar
- Department of Chemistry, University of North Bengal, Darjeeling 734013, India.
| | - Suvojit Roy
- Department of Chemistry, University of North Bengal, Darjeeling 734013, India.
| | - Subhra Jyoti Panda
- Department of Chemical Sciences, National Institute of Science Education and Research, Bhubaneswar, Orissa-751005, India
| | - Chandra Shekhar Purohit
- Department of Chemical Sciences, National Institute of Science Education and Research, Bhubaneswar, Orissa-751005, India
| | - Bhaskar Biswas
- Department of Chemistry, University of North Bengal, Darjeeling 734013, India.
| | - Hari Sankar Das
- Department of Chemistry, University of North Bengal, Darjeeling 734013, India.
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A thiomethyl-substituted imidazolyl imine functionalized copper(II) complex: synthesis, structural characterization, phenoxazinone synthase mimics and biological activities. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.115783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Mahato RK, Das S, Joshi M, Choudhury AR, Misra A, Biswas B. Biomimics of phenazine oxidase activity of a cobalt (III)‐dipyridylamine complex: Spectroscopic, structural, and computational studies
†. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6483] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Soumik Das
- Department of Chemistry University of North Bengal Darjeeling India
| | - Mayank Joshi
- Department of Chemical Sciences Indian Institute of Science Education and Research (IISER) Mohali India
| | - Angshuman Roy Choudhury
- Department of Chemical Sciences Indian Institute of Science Education and Research (IISER) Mohali India
| | - Anirban Misra
- Department of Chemistry University of North Bengal Darjeeling India
| | - Bhaskar Biswas
- Department of Chemistry University of North Bengal Darjeeling India
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Mudi PK, Mahato RK, Joshi M, Shit M, Choudhury AR, Das HS, Biswas B. Copper(II) complexes with a benzimidazole functionalized Schiff base: Synthesis, crystal structures, and role of ancillary ions in phenoxazinone synthase activity. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6211] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
| | | | - Mayank Joshi
- Department of Chemical Sciences Indian Institute of Science Education and Research Mohali Punjab India
| | - Madhusudan Shit
- Department of Chemistry Dinobandhu Andrews College Kolkata India
| | - Angshuman Roy Choudhury
- Department of Chemical Sciences Indian Institute of Science Education and Research Mohali Punjab India
| | - Hari Sankar Das
- Department of Chemistry University of North Bengal Darjeeling India
| | - Bhaskar Biswas
- Department of Chemistry University of North Bengal Darjeeling India
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Catalytic oxidative coupling of o-phenylenediamine, in-vitro antibacterial and antitumor activities of a gold(III)-bipyridine complex. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129264] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Sohtun WP, Muthuramalingam S, Sankaralingam M, Velusamy M, Mayilmurugan R. Copper(II) complexes of tripodal ligand scaffold (N 3O) as functional models for phenoxazinone synthase. J Inorg Biochem 2020; 216:111313. [PMID: 33277049 DOI: 10.1016/j.jinorgbio.2020.111313] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 11/12/2020] [Accepted: 11/12/2020] [Indexed: 11/30/2022]
Abstract
The copper(II) complexes [Cu(L)NO3] (1-9) of newer N3O ligands (L1-L9) have been synthesized and characterized. The molecular structure of 1, 4, and 7 exhibited nearly a perfect square pyramidal geometry (τ, 0.04-0.11). The Cu-OPhenolate bonds (~ 1.91 Å) are shorter than the Cu-N bonds (~ 2.06 Å) due to the stronger coordination of anionic phenolate oxygen. The Cu(II)/Cu(I) redox potentials of 1-9 appeared around -0.102 to -0.428 V versus Ag/Ag+ in water. The electronic spectra of the complexes showed the d-d transitions around 643-735 nm and axial EPR parameter (g||, 2.243-2.270; A||, 164-179 × 10-4 cm-1) that corresponds to square pyramidal geometry. The bonding parameters α2, 0.760-0.825; β2, 0.761-0.994; γ2, 0.504-0.856 and K||, 0.698-0.954 and K⊥, 0.383-0.820 calculated from EPR spectra and energies of d-d transitions. The complexes catalyzed the conversion of substrate 2-aminophenol into 2-aminophenoxazine-3-one using molecular oxygen in the water and exhibited the yields of 41-61%. The formation of the product is accomplished by the appearance of a new absorption band at 430 nm and the rates of formation were calculated as 6.98-15.65 × 10-3 s-1 in water. The reaction follows Michaelis-Menten enzymatic reaction kinetics with turnover numbers (kcat) 9.11 × 105 h-1 for 1 and 4.66 × 105 h-1 for 9 in water. The spectral, redox and kinetic studies were performed in water to mimic the enzymatic oxidation reaction conditions.
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Affiliation(s)
- Winaki P Sohtun
- Department of Chemistry, North Eastern Hill University, Shillong 793022, India
| | - Sethuraman Muthuramalingam
- Bioinorganic Chemistry Laboratory/Physical Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625 021, Tamil Nadu, India
| | - Muniyandi Sankaralingam
- Bioinspired & Biomimetic Inorganic Chemistry Lab, Department of Chemistry, National Institute of Technology Calicut, Kozhikode, Kerala 673601, India
| | - Marappan Velusamy
- Department of Chemistry, North Eastern Hill University, Shillong 793022, India.
| | - Ramasamy Mayilmurugan
- Bioinorganic Chemistry Laboratory/Physical Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625 021, Tamil Nadu, India.
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Mahato S, Meheta N, Kotakonda M, Joshi M, Ghosh P, Shit M, Choudhury AR, Biswas B. Ligand directed synthesis of a unprecedented tetragonalbipyramidal copper (II) complex and its antibacterial activity and catalytic role in oxidative dimerisation of 2‐aminophenol. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5935] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Shreya Mahato
- Department of Chemistry University of North Bengal Darjeeling‐734013 India
| | - Nishith Meheta
- Department of Chemistry University of North Bengal Darjeeling‐734013 India
| | | | - Mayank Joshi
- Department of Chemical Sciences Indian Institute of Science Education and Research Mohali, Sector 81, Knowledge City, S. A. S. Nagar, Manauli PO Mohali Punjab 140306 India
| | - Prasanta Ghosh
- Department of Chemistry Narendrapur Ramakrishna Mission Residential College Kolkata 700103 India
| | - Madhusudan Shit
- Department of Chemistry Dinabandhu Andrews College Kolkata 700084 India
| | - Angshuman Roy Choudhury
- Department of Chemical Sciences Indian Institute of Science Education and Research Mohali, Sector 81, Knowledge City, S. A. S. Nagar, Manauli PO Mohali Punjab 140306 India
| | - Bhaskar Biswas
- Department of Chemistry University of North Bengal Darjeeling‐734013 India
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Schiff base triggering synthesis of copper(II) complex and its catalytic fate towards mimics of phenoxazinone synthase activity. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119468] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Sohtun WP, Muthuramalingam S, Velusamy M, Mayilmurugan R. New class of tridentate 3N ligands and copper(II) complexes: A model for type-2 copper site of phenoxazinone synthase. INORG CHEM COMMUN 2019. [DOI: 10.1016/j.inoche.2019.107608] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Salah BA, Kandil AT, Abd El-Nasser MG. Synthesis, characterization, computational and biological activity of novel hydrazone complexes. JOURNAL OF RADIATION RESEARCH AND APPLIED SCIENCES 2019. [DOI: 10.1080/16878507.2019.1678100] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Bahaa A. Salah
- Department of Chemistry, Helwan University, Cairo, Egypt
| | - A. T. Kandil
- Department of Chemistry, Helwan University, Cairo, Egypt
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Qin XH, Hua J, Zou HH. Two cobalt metal-organic frameworks constructed from mixed ligands and their magnetic properties. J CHEM SCI 2019. [DOI: 10.1007/s12039-019-1634-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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12
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Jana NC, Patra M, Brandão P, Panja A. Biomimetic catalytic activity and structural diversity of cobalt complexes with N3O-donor Schiff base ligand. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.03.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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