1
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Resende LF, Pliego JR. Modeling the alkylation of amines with alkyl bromides: explaining the low selectivity due to multiple alkylation. J Mol Model 2024; 30:107. [PMID: 38492112 DOI: 10.1007/s00894-024-05902-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Accepted: 03/12/2024] [Indexed: 03/18/2024]
Abstract
CONTEXT Nucleophilic substitution reactions of aliphatic amines with alkyl halides represent a simple and direct mechanism for obtaining higher-order aliphatic amines. However, it is well known that these reactions suffer from low selectivity due to multiple alkylations, which is attributed to the higher reactivity of the newly formed amine. In order to provide a detailed explanation for this kind of system, we have investigated the reactivity of primary and secondary amines with 1-bromopropane and 2-bromopropane. The free energy profile in acetonitrile solution was obtained and a detailed microkinetic analysis was needed to analyze this complex reaction system. We have found that the product of the first alkylation is an ion pair corresponding to the protonated secondary amine and the bromide ion, which can transfer the proton to the reactant primary amine. Then, the newly formed secondary amine can also react, leading to a second alkylation to produce a tertiary protonated amine. Our modeling points out that both the proton transfer equilibria and the similar reactivity of the primary and secondary amines produce reduced selectivity. The proton transfer equilibria also contribute to slowing down the kinetics of the first alkylation. METHODS The exploration of the mechanism was done by geometry optimization using the CPCM/X3LYP/ma-def2-SVP method, followed by harmonic frequency calculation at this same level of theory. A composite approach was used to obtain the free energy profile, using the more accurate ωB97X-D3/ma-def2-TZVPP level of theory for electronic energy and the SMD model for the solvation free energy. These calculations were performed with the ORCA 4 program. The detailed microkinetic analysis was done using the Kintecus program.
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Affiliation(s)
- Luis F Resende
- Departamento de Ciências Naturais, Universidade Federal de São João del Rei, São João del Rei, MG, 36301-160, Brazil
| | - Josefredo R Pliego
- Departamento de Ciências Naturais, Universidade Federal de São João del Rei, São João del Rei, MG, 36301-160, Brazil.
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2
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González-Lainez M, Jiménez MV, Passarelli V, Pérez-Torrente JJ. β-( Z)-Selective alkyne hydrosilylation by a N,O-functionalized NHC-based rhodium(I) catalyst. Dalton Trans 2023; 52:11503-11517. [PMID: 37534827 DOI: 10.1039/d3dt01911j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/04/2023]
Abstract
Neutral and cationic cyclooctadiene rhodium(I) complexes with a lutidine-derived polydentate ligand having NHC and methoxy side-donor functions, [RhBr(cod)(κC-tBuImCH2PyCH2OMe)] and [Rh(cod)(κ2C,N-tBuImCH2PyCH2OMe)]PF6, have been prepared. Carbonylation of the cationic compound yields the dicarbonyl complex [Rh(CO)2(κ2C,N-tBuImCH2PyCH2OMe)]PF6 whereas carbonylation of the neutral compound affords a mixture of di- and monocarbonyl neutral complexes [RhBr(CO)2(κC-tBuImCH2PyCH2OMe)] and [RhBr(CO)(κ2C,N-tBuImCH2PyCH2OMe)]. These complexes efficiently catalyze the hydrosilylation of 1-hexyne with HSiMe2Ph with a marked selectivity towards the β-(Z)-vinylsilane product. Catalyst [RhBr(CO)(κ2C,N-tBuImCH2PyCH2OMe)] showed a superior catalytic performance, in terms of both activity and selectivity, and has been applied to the hydrosilylation of a range of 1-alkynes and phenylacetylene derivatives with diverse hydrosilanes, including HSiMe2Ph, HSiMePh2, HSiPh3 and HSiEt3, showing excellent β-(Z) selectivity for the hydrosilylation of linear aliphatic 1-alkynes. Hydrosilylation of internal alkynes, such as diphenylacetylene and 1-phenyl-1-propyne, selectively affords the syn-addition vinylsilane products. The β-(Z) selectivity of these catalysts contrasts with that of related rhodium(I) catalysts based on 2-picolyl-functionalised NHC ligands, which were reported to be β-(E) selective. An energy barrier ΔG‡ of 19.8 ± 2.0 kcal mol-1 (298 K) has been determined from kinetic studies on the hydrosilylation of 1-hexyne with HSiMe2Ph. DFT studies suggest that the methoxy-methyl group is unlikely to be involved in the activation of hydrosilane, and then hydrosilane activation is likely to proceed via a classical Si-H oxidative addition.
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Affiliation(s)
- Miguel González-Lainez
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-C.S.I.C., 50009-Zaragoza, Spain.
| | - M Victoria Jiménez
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-C.S.I.C., 50009-Zaragoza, Spain.
| | - Vincenzo Passarelli
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-C.S.I.C., 50009-Zaragoza, Spain.
| | - Jesús J Pérez-Torrente
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-C.S.I.C., 50009-Zaragoza, Spain.
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3
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González-Lainez M, Jiménez MV, Azpiroz R, Passarelli V, Modrego FJ, Pérez-Torrente JJ. N-Methylation of Amines with Methanol Catalyzed by Iridium(I) Complexes Bearing an N,O-Functionalized NHC Ligand. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Miguel González-Lainez
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-C.S.I.C., 50009 Zaragoza, Spain
| | - M. Victoria Jiménez
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-C.S.I.C., 50009 Zaragoza, Spain
| | - Ramón Azpiroz
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-C.S.I.C., 50009 Zaragoza, Spain
| | - Vincenzo Passarelli
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-C.S.I.C., 50009 Zaragoza, Spain
| | - F. Javier Modrego
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-C.S.I.C., 50009 Zaragoza, Spain
| | - Jesús J. Pérez-Torrente
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-C.S.I.C., 50009 Zaragoza, Spain
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4
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Kumar KY, Kumar CBP, Prasad KNN, Jeon BH, Alsalme A, Prashanth MK. Microwave-assisted N-alkylation of amines with alcohols catalyzed by MnCl 2 : Anticancer, docking, and DFT studies. Arch Pharm (Weinheim) 2022; 355:e2100443. [PMID: 35137966 DOI: 10.1002/ardp.202100443] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 01/18/2022] [Accepted: 01/20/2022] [Indexed: 11/09/2022]
Abstract
A new protocol for the N-alkylation of amines with alcohols for the synthesis of tertiary amines in the presence of MnCl2 as a catalyst, under microwave conditions, is described. The advantages of this protocol include stable reaction profiles, a wide substrate variety, excellent yields, low cost, high yields, and easy workup conditions. The anticancer efficacy of all the synthesized compounds was tested in vitro against various cancer cell lines, such as MCF-7, MDA-MB-231 (human breast), HT-29, HCT 116 (colon cancer), A549 (human lung carcinoma), and Vero cells. Among the screened compounds, 3e, 3h, and 3i demonstrated potent anticancer activity, with compound 3h surpassing the reference drug cisplatin against A549, MCF7, MDA-MB-231, and HCT116 cancer cells. The introduction of an electron-withdrawing group on the phenyl ring resulted in increased anticancer activity. The most potent compounds, 3e, 3h, and 3i, were tested against VEGFR-2, HER2, and EGFR in multikinase inhibition assays, with compounds 3h and 3i showing improved potency against the HER2 kinase. The compounds formed two H-bonds with amino acids, indicating that they had a high affinity for the target HER2 kinase (PDB ID: 3RCD), according to the docking analysis. The absorption, distribution, metabolism, excretion, and toxicity properties of the optimized analogs were also assessed in vitro, enabling the discovery of promising anticancer agents. Finally, the B3LYP level was used to measure density functional theory geometry optimization and the related quantum parameters for the active compounds.
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Affiliation(s)
- K Yogesh Kumar
- Department of Chemistry, Faculty of Engineering and Technology, Jain University, Ramanagara, India
| | - C B Pradeep Kumar
- Department of Chemistry, Malnad College of Engineering, Hassan, India
| | - K N N Prasad
- Department of Physics, BNM Institute of Technology, Bengaluru, India
| | - Byong-Hun Jeon
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul, Republic of Korea
| | - Ali Alsalme
- Department of Chemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - M K Prashanth
- Department of Chemistry, BNM Institute of Technology, Bengaluru, India
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5
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Moutaoukil Z, Serrano-Díez E, Collado IG, Jiménez-Tenorio M, Botubol-Ares JM. N-Alkylation of organonitrogen compounds catalyzed by methylene-linked bis-NHC half-sandwich ruthenium complexes. Org Biomol Chem 2022; 20:831-839. [PMID: 35018948 DOI: 10.1039/d1ob02214h] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
An efficient ruthenium-catalyzed N-alkylation of amines, amides and sulfonamides has been developed employing novel pentamethylcyclopentadienylruthenium(II) complexes bearing the methylene linked bis(NHC) ligand bis(3-methylimidazol-2-ylidene)methane. The acetonitrile complex 2 has proven particularly effective with a broad range of substrates with low catalyst loading (0.1-2.5 mol%) and high functional group tolerance under mild conditions. A total of 52 N-alkylated organonitrogen compounds including biologically relevant scaffolds were synthesized from (hetero)aromatic and aliphatic amines, amides and sulfonamides using alcohols or diols as alkylating agents in up to 99% isolated yield, even on gram-scale reactions. In the case of sulfonamides, it is the first example of N-alkylation employing a transition-metal complex bearing NHC ligands.
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Affiliation(s)
- Zakaria Moutaoukil
- University of Cadiz, Departamento de Química Orgánica-INBIO, Facultad de Ciencias, Torre Sur, 4° planta, 11510, Puerto Real, Cádiz.
| | - Emmanuel Serrano-Díez
- University of Cadiz, Departamento de Química Orgánica-INBIO, Facultad de Ciencias, Torre Sur, 4° planta, 11510, Puerto Real, Cádiz.
| | - Isidro G Collado
- University of Cadiz, Departamento de Química Orgánica-INBIO, Facultad de Ciencias, Torre Sur, 4° planta, 11510, Puerto Real, Cádiz.
| | - Manuel Jiménez-Tenorio
- University of Cadiz, Departamento de Ciencias de los Materiales e Ingeniería Metalúrgica y Química Inorgánica-INBIO, Facultad de Ciencias, Torre Norte, 1° planta, 11510, Puerto Real, Cádiz, Spain
| | - José Manuel Botubol-Ares
- University of Cadiz, Departamento de Química Orgánica-INBIO, Facultad de Ciencias, Torre Sur, 4° planta, 11510, Puerto Real, Cádiz.
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6
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Jeong J, Fujita K. Selective Synthesis of Bisdimethylamine Derivatives from Diols and an Aqueous Solution of Dimethylamine through Iridium‐Catalyzed Borrowing Hydrogen Pathway. ChemCatChem 2021. [DOI: 10.1002/cctc.202101499] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jaeyoung Jeong
- Graduate School of Human and Environmental Studies Kyoto University Sakyo-ku Kyoto 606-8501 Japan
| | - Ken‐ichi Fujita
- Graduate School of Human and Environmental Studies Kyoto University Sakyo-ku Kyoto 606-8501 Japan
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7
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Panigrahi UK, Bhat VT, Ramakrishnan VKM. Magnetically Recyclable Heterogeneous Cobalt Ferrite Catalyst for the Direct N‐Alkylation of (Hetero)aryl Amines with Alcohols. ChemistrySelect 2021. [DOI: 10.1002/slct.202100510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Uttam Kumar Panigrahi
- Department of chemistry College of Engineering and Technology Faculty of Engineering and Technology SRM Institute of Science and Technology SRM Nagar, Kattankulathur 603203, Kanchipuram Chennai Tamil Nadu India
| | - Venugopal T. Bhat
- Department of chemistry College of Engineering and Technology Faculty of Engineering and Technology SRM Institute of Science and Technology SRM Nagar, Kattankulathur 603203, Kanchipuram Chennai Tamil Nadu India
| | - Vengadesh Kumara Mangalam Ramakrishnan
- Department of chemistry College of Engineering and Technology Faculty of Engineering and Technology SRM Institute of Science and Technology SRM Nagar, Kattankulathur 603203, Kanchipuram Chennai Tamil Nadu India
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8
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Singh A, Maji A, Joshi M, Choudhury AR, Ghosh K. Designed pincer ligand supported Co(II)-based catalysts for dehydrogenative activation of alcohols: Studies on N-alkylation of amines, α-alkylation of ketones and synthesis of quinolines. Dalton Trans 2021; 50:8567-8587. [PMID: 34075925 DOI: 10.1039/d0dt03748f] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Base-metal catalysts Co1, Co2 and Co3 were synthesized from designed pincer ligands L1, L2 and L3 having NNN donor atoms respectively. Co1, Co2 and Co3 were characterized by IR, UV-Vis. and ESI-MS spectroscopic studies. Single crystal X-ray diffraction studies were investigated to authenticate the molecular structures of Co1 and Co3. Catalysts Co1, Co2 and Co3 were utilized to study the dehydrogenative activation of alcohols for N-alkylation of amines, α-alkylation of ketones and synthesis of quinolines. Under optimized reaction conditions, a broad range of substrates including alcohols, anilines and ketones were exploited. A series of control experiments for N-alkylation of amines, α-alkylation of ketones and synthesis of quinolines were examined to understand the reaction pathway. ESI-MS spectral studies were investigated to characterize cobalt-alkoxide and cobalt-hydride intermediates. Reduction of styrene by evolved hydrogen gas during the reaction was investigated to authenticate the dehydrogenative nature of the catalysts. Probable reaction pathways were proposed for N-alkylation of amines, α-alkylation of ketones and synthesis of quinolines on the basis of control experiments and detection of reaction intermediates.
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Affiliation(s)
- Anshu Singh
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee-247667, Uttarakhand, India.
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9
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Wu D, Bu Q, Guo C, Dai B, Liu N. Cooperative catalysis of molybdenum with organocatalysts for distribution of products between amines and imines. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111415] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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10
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11
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Iuliano M, Sarno M, Cirillo C, Ponticorvo E, De Pasquale S. Easy and One‐Step Synthesis of Ir Single Atom Doped PPy Nanoparticles for Highly Active N‐Alkylation Reaction. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202000971] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Mariagrazia Iuliano
- Department of Industrial Engineering University of Salerno Via Giovanni Paolo II, 132 84084 Fisciano SA Italy
| | - Maria Sarno
- Department of Physics “E.R. Caianiello” University of Salerno Via Giovanni Paolo II, 132 84084 Fisciano SA Italy
- NANO_MATES Research Centre University of Salerno Via Giovanni Paolo II, 132 84084 Fisciano SA Italy
| | - Claudia Cirillo
- Department of Industrial Engineering University of Salerno Via Giovanni Paolo II, 132 84084 Fisciano SA Italy
| | - Eleonora Ponticorvo
- Department of Industrial Engineering University of Salerno Via Giovanni Paolo II, 132 84084 Fisciano SA Italy
- NANO_MATES Research Centre University of Salerno Via Giovanni Paolo II, 132 84084 Fisciano SA Italy
| | - Salvatore De Pasquale
- Department of Physics “E.R. Caianiello” University of Salerno Via Giovanni Paolo II, 132 84084 Fisciano SA Italy
- NANO_MATES Research Centre University of Salerno Via Giovanni Paolo II, 132 84084 Fisciano SA Italy
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12
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Ruiz‐Castañeda M, Rodríguez AM, Aboo AH, Manzano BR, Espino G, Xiao J, Jalón FA. Iridium complexes with a new type of
N
^
N
′‐donor anionic ligand catalyze the
N
‐benzylation of amines via borrowing hydrogen. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.6003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Margarita Ruiz‐Castañeda
- Departamento de Química Inorgánica, Orgánica y Bioquímica, Facultad de Químicas‐IRICA Universidad de Castilla‐La Mancha Avda. Camilo J. Cela 10 Ciudad Real 13071 Spain
| | - Ana M. Rodríguez
- Departamento de Química Inorgánica, Orgánica y Bioquímica, Facultad de Químicas‐IRICA Universidad de Castilla‐La Mancha Avda. Camilo J. Cela 10 Ciudad Real 13071 Spain
| | - Ahmed H. Aboo
- Department of Chemistry University of Liverpool Liverpool L69 7ZD UK
| | - Blanca R. Manzano
- Departamento de Química Inorgánica, Orgánica y Bioquímica, Facultad de Químicas‐IRICA Universidad de Castilla‐La Mancha Avda. Camilo J. Cela 10 Ciudad Real 13071 Spain
| | - Gustavo Espino
- Departamento de Química, Facultad de Ciencias Universidad de Burgos Plaza Misael Bañuelos s/n Burgos 09001 Spain
| | - Jianliang Xiao
- Department of Chemistry University of Liverpool Liverpool L69 7ZD UK
| | - Félix A. Jalón
- Departamento de Química Inorgánica, Orgánica y Bioquímica, Facultad de Químicas‐IRICA Universidad de Castilla‐La Mancha Avda. Camilo J. Cela 10 Ciudad Real 13071 Spain
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13
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Denizaltı S, Dayan S, Günnaz S, Şahin E. Thiazoline‐Iridium (III) Complexes and Immobilized Nanomaterials as Selective Catalysts in
N
‐Alkylation of Amines with Alcohols. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5970] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Serpil Denizaltı
- Department of Chemistry Ege University Bornova‐İzmir 35100 Turkey
| | - Serkan Dayan
- Drug Application and Research Center Erciyes University Kayseri 38280 Turkey
| | - Salih Günnaz
- Department of Chemistry Ege University Bornova‐İzmir 35100 Turkey
| | - Ertan Şahin
- Department of Chemistry Atatürk University Erzurum 25400 Turkey
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14
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Kobayashi M, Itoh S, Yoshimura K, Tsukamoto Y, Obora Y. Iridium Complex-Catalyzed C2-Extension of Primary Alcohols with Ethanol via a Hydrogen Autotransfer Reaction. J Org Chem 2020; 85:11952-11958. [PMID: 32786619 DOI: 10.1021/acs.joc.0c01540] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The development of a C2-extension of primary alcohols with ethanol as the C2 source and catalysis by [Cp*IrCl2]2 (where Cp* = pentamethylcyclopentadiene) is described. This new extension system was used for a range of benzylic alcohol substrates and for aliphatic alcohols with ethanol as an alkyl reagent to generate the corresponding C2-extended linear alcohols. Mechanistic studies of the reaction by means of intermediates and deuterium labeling experiments suggest the reaction is based on hydrogen autotransfer.
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Affiliation(s)
- Masaki Kobayashi
- Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, Suita, Osaka 564-8680, Japan
| | - Satoshi Itoh
- Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, Suita, Osaka 564-8680, Japan
| | - Keisuke Yoshimura
- Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, Suita, Osaka 564-8680, Japan
| | - Yuya Tsukamoto
- Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, Suita, Osaka 564-8680, Japan
| | - Yasushi Obora
- Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, Suita, Osaka 564-8680, Japan
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15
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Liu TT, Tang SY, Hu B, Liu P, Bi S, Jiang YY. Mechanism and Origin of Chemoselectivity of Ru-Catalyzed Cross-Coupling of Secondary Alcohols to β-Disubstituted Ketones. J Org Chem 2020; 85:12444-12455. [DOI: 10.1021/acs.joc.0c01671] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Tian-Tian Liu
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, People’s Republic of China
| | - Shi-Ya Tang
- SINOPEC Research Institute of Safety Engineering, Qingdao 266000, People’s Republic of China
| | - Bing Hu
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, People’s Republic of China
| | - Peng Liu
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, People’s Republic of China
| | - Siwei Bi
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, People’s Republic of China
| | - Yuan-Ye Jiang
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, People’s Republic of China
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16
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Sankar V, Kathiresan M, Sivakumar B, Mannathan S. Zinc‐Catalyzed N‐Alkylation of Aromatic Amines with Alcohols: A Ligand‐Free Approach. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000499] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Velayudham Sankar
- Department of Chemistry SRM Institute of Science and Technology Kattankulathur Chennai 603203 India
| | - Murugavel Kathiresan
- Electro Organic Division CSIR – Central Electrochemical Research Institute Karaikudi 630003 Tamilnadu India
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17
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González-Lainez M, Jiménez MV, Passarelli V, Pérez-Torrente JJ. Effective N-methylation of nitroarenes with methanol catalyzed by a functionalized NHC-based iridium catalyst: a green approach to N-methyl amines. Catal Sci Technol 2020. [DOI: 10.1039/d0cy00707b] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
An Ir–NHC compound catalyzes the borrowing-hydrogen reduction of nitroarenes into N-methyl amines with methanol through a direct mechanism.
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Affiliation(s)
- Miguel González-Lainez
- Departamento de Química Inorgánica – Instituto de Síntesis Química y Catálisis Homogénea-ISQCH
- Universidad de Zaragoza – CSIC
- 50009 Zaragoza
- Spain
| | - M. Victoria Jiménez
- Departamento de Química Inorgánica – Instituto de Síntesis Química y Catálisis Homogénea-ISQCH
- Universidad de Zaragoza – CSIC
- 50009 Zaragoza
- Spain
| | - Vincenzo Passarelli
- Departamento de Química Inorgánica – Instituto de Síntesis Química y Catálisis Homogénea-ISQCH
- Universidad de Zaragoza – CSIC
- 50009 Zaragoza
- Spain
- Centro Universitario de la Defensa
| | - Jesús J. Pérez-Torrente
- Departamento de Química Inorgánica – Instituto de Síntesis Química y Catálisis Homogénea-ISQCH
- Universidad de Zaragoza – CSIC
- 50009 Zaragoza
- Spain
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18
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Selective N-Alkylation of 2-Amino-4H-chromene-3-carbonitrile Derivatives with Alcohols Catalyzed by AlCl3 Under the Assistance of CH3COOH. Chem Res Chin Univ 2019. [DOI: 10.1007/s40242-019-9248-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Sarno M, Cirillo C, Iuliano M. Self-Suspended Nanoparticles for N-Alkylation Reactions: A New Concept for Catalysis. ChemistryOpen 2019; 8:520-531. [PMID: 31061777 PMCID: PMC6488208 DOI: 10.1002/open.201900104] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Indexed: 11/23/2022] Open
Abstract
The catalytic activity of snowman-like and core-shell Fe3O4/Au nanoparticles (NPs), obtained through a "wet chemistry" approach which directly restitutes nanocatalysts stable and highly active in the reaction medium, was tested towards N-alkylation reactions. The nanocatalysts were tested for the synthesis of secondary amines. The core-shell NPs, thanks to the surface properties, homogeneous dispersion and intimate connection with reagents in the catalyst medium, exhibited an excellent catalytic activity (e. g. >99 % yield and conversion of aniline in very short time and mild conditions). Owing to the magnetic part, the nanoparticles can be easily separated and reused, showing an almost stable activity after 10 cycles.
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Affiliation(s)
- Maria Sarno
- Department of Industrial Engineering and Centre NANO_MATESUniversity of SalernoVia Giovanni Paolo II132-84084Fisciano (SA)Italy
| | - Claudia Cirillo
- Department of Industrial Engineering and Centre NANO_MATESUniversity of SalernoVia Giovanni Paolo II132-84084Fisciano (SA)Italy
| | - Mariagrazia Iuliano
- Department of Industrial Engineering and Centre NANO_MATESUniversity of SalernoVia Giovanni Paolo II132-84084Fisciano (SA)Italy
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