1
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Saha R, Hembram BC, Panda S, Ghosh R, Bagh B. Iron-Catalyzed sp 3 C-H Alkylation of Fluorene with Primary and Secondary Alcohols: A Borrowing Hydrogen Approach. J Org Chem 2024. [PMID: 39175426 DOI: 10.1021/acs.joc.4c00819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/24/2024]
Abstract
The utilization of earth-abundant, cheap, and nontoxic transition metals in important catalytic transformations is essential for sustainable development, and iron has gained significant attention as the most abundant transition metal. A mixture of FeCl2 (3 mol %), phenanthroline (6 mol %), and KOtBu (0.4 eqivalent) was used as an effective catalyst for the sp3 C-H alkylation of fluorene using alcohol as a nonhazardous alkylating partner, and eco-friendly water was formed as the only byproduct. The substrate scope includes a wide range of substituted fluorenes and substituted benzyl alcohols. The reaction is equally effective with challenging secondary alcohols and unactivated aliphatic alcohols. Selective mono-C9-alkylation of fluorenes with alcohols yielded the corresponding products in good isolated yields. Various postfunctionalizations of C-9 alkylated fluorene products were performed to establish the practical utility of this catalytic alkylation. Control experiments suggested a homogeneous reaction path involving borrowing hydrogen mechanism with the formation and subsequent reduction of 9-alkylidene fluorene intermediate.
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Affiliation(s)
- Ratnakar Saha
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhabha National Institute, Bhubaneswar, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Odisha, PIN 752050, India
| | - Bhairab Chand Hembram
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhabha National Institute, Bhubaneswar, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Odisha, PIN 752050, India
| | - Surajit Panda
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhabha National Institute, Bhubaneswar, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Odisha, PIN 752050, India
| | - Rahul Ghosh
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhabha National Institute, Bhubaneswar, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Odisha, PIN 752050, India
| | - Bidraha Bagh
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhabha National Institute, Bhubaneswar, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Odisha, PIN 752050, India
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2
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Liu X, Huang L, Ma Y, She G, Zhou P, Zhu L, Zhang Z. Enable biomass-derived alcohols mediated alkylation and transfer hydrogenation. Nat Commun 2024; 15:7012. [PMID: 39147765 PMCID: PMC11327299 DOI: 10.1038/s41467-024-51307-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Accepted: 07/31/2024] [Indexed: 08/17/2024] Open
Abstract
A single-atom catalyst with generally regarded inert Zn-N4 motifs derived from ZIF-8 is unexpectedly efficient for the activation of alcohols, enabling alcohol-mediated alkylation and transfer hydrogenation. C-alkylation of nitriles, ketones, alcohols, N-heterocycles, amides, keto acids, and esters, and N-alkylation of amines and amides all go smoothly with the developed method. Taking the α-alkylation of nitriles with alcohols as an example, the α-alkylation starts from the (1) nitrogen-doped carbon support catalyzed dehydrogenation of alcohols into aldehydes, which further condensed with nitriles to give vinyl nitriles, followed by (2) transfer hydrogenation of C=C bonds in vinyl nitriles on Zn-N4 sites. The experimental results and DFT calculations reveal that the Lewis acidic Zn-N4 sites promote step (2) by activating the alcohols. This is the first example of highly efficient single-atom catalysts for various organic transformations with biomass-derived alcohols as the alkylating reagents and hydrogen donors.
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Affiliation(s)
- Xixi Liu
- Key Laboratory of Catalysis and Materials Sciences of the Ministry of Education, South-Central Minzu University, Wuhan, China
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan, China
| | - Liang Huang
- The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, China
| | - Yuandie Ma
- Key Laboratory of Catalysis and Materials Sciences of the Ministry of Education, South-Central Minzu University, Wuhan, China
| | - Guoqiang She
- Key Laboratory of Catalysis and Materials Sciences of the Ministry of Education, South-Central Minzu University, Wuhan, China
| | - Peng Zhou
- Key Laboratory of Catalysis and Materials Sciences of the Ministry of Education, South-Central Minzu University, Wuhan, China
| | - Liangfang Zhu
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan, China
| | - Zehui Zhang
- Key Laboratory of Catalysis and Materials Sciences of the Ministry of Education, South-Central Minzu University, Wuhan, China.
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3
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Saha R, Hembram BC, Panda S, Jana NC, Bagh B. Iron- and base-catalyzed C(α)-alkylation and one-pot sequential alkylation-hydroxylation of oxindoles with secondary alcohols. Org Biomol Chem 2024; 22:6321-6330. [PMID: 39039931 DOI: 10.1039/d4ob00957f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/24/2024]
Abstract
The utilization of economical and environmentally benign transition metals in crucial catalytic processes is pivotal for sustainable advancement in synthetic organic chemistry. Iron, as the most abundant transition metal in the Earth's crust, has gained significant attention for this purpose. A combination of FeCl2 (5 mol%) in the presence of phenanthroline (10 mol%) and NaOtBu (1.5 equivalent) proved effective for the C(α)-alkylation of oxindole, employing challenging secondary alcohol as a non-hazardous alkylating agent. The C(α)-alkylation of oxindole was optimized in green solvent or under neat conditions. The substrate scope encompasses a broad array of substituted oxindoles with various secondary alcohols. Further post-functionalization of the C(α)-alkylated oxindole products demonstrated the practical utility of this catalytic alkylation. One-pot C-H hydroxylation of alkylated oxindoles yielded 3-alkyl-3-hydroxy-2-oxindoles using air as the most sustainable oxidant. Low E-factors (3.61 to 4.19) and good Eco-scale scores (74 to 76) of these sustainable catalytic protocols for the alkylation and one-pot sequential alkylation-hydroxylation of oxindoles demonstrated minimum waste generation. Plausible catalytic paths are proposed on the basis of past reports and control experiments, which suggested that a borrowing hydrogen pathway is involved in this alkylation.
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Affiliation(s)
- Ratnakar Saha
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhabha National Institute, Bhubaneswar, Jatni, Khurda, Odisha, PIN 752050, India.
| | - Bhairab Chand Hembram
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhabha National Institute, Bhubaneswar, Jatni, Khurda, Odisha, PIN 752050, India.
| | - Surajit Panda
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhabha National Institute, Bhubaneswar, Jatni, Khurda, Odisha, PIN 752050, India.
| | - Narayan Ch Jana
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhabha National Institute, Bhubaneswar, Jatni, Khurda, Odisha, PIN 752050, India.
| | - Bidraha Bagh
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhabha National Institute, Bhubaneswar, Jatni, Khurda, Odisha, PIN 752050, India.
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4
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Song P, Rong H, Meng T, Cui Z, Mao M, Yang C. Quinoline-derived NNP-manganese complex catalyzed α-alkylation of ketones with primary alcohols. Org Biomol Chem 2024; 22:5112-5116. [PMID: 38864433 DOI: 10.1039/d4ob00827h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2024]
Abstract
An air-stable quinoline-derived NNP ligand chelated Mn catalyst was developed for the efficient α-alkylation of ketones with primary alcohols via a hydrogen auto-transfer methodology. The sole by-product formed is water, rendering the protocol atom efficient. A wide range of ketone and alcohol substrates were employed, providing the α-alkylated ketones with isolated yields up to 94%. This system was also efficient for the green synthesis of quinoline derivatives while using (2-aminophenyl)methanol as an alkylating reagent.
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Affiliation(s)
- Peidong Song
- Xi'an Modern Chemistry Research Institute, Xi'an 710065, China.
| | - Haojie Rong
- Xi'an Modern Chemistry Research Institute, Xi'an 710065, China.
| | - Tingting Meng
- Xi'an Modern Chemistry Research Institute, Xi'an 710065, China.
| | - Zhe Cui
- Xi'an Modern Chemistry Research Institute, Xi'an 710065, China.
| | - Mingzhen Mao
- Xi'an Modern Chemistry Research Institute, Xi'an 710065, China.
| | - Cuifeng Yang
- Xi'an Modern Chemistry Research Institute, Xi'an 710065, China.
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5
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Saha R, Panda S, Nanda A, Bagh B. Nickel-Catalyzed α-Alkylation of Arylacetonitriles with Challenging Secondary Alcohols. J Org Chem 2024; 89:6664-6676. [PMID: 36595479 DOI: 10.1021/acs.joc.2c02026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Nickel(II) complex 1 was utilized as a sustainable catalyst for α-alkylation of arylacetonitriles with challenging secondary alcohols. Arylacetonitriles with a wide range of functional groups were tolerated, and various cyclic and acyclic secondary alcohols were utilized to yield a large number of α-alkylated products. The plausible mechanism involves the base-promoted activation of precatalyst 1 to an active catalyst 2 (dehydrochlorinated product) which activates the O-H and C-H bonds of the secondary alcohol in a dehydrogenative pathway.
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Affiliation(s)
- Ratnakar Saha
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhabha National Institute, Bhimpur-Padanpur, Via Jatni, District Khurda, Bhubaneswar, Odisha 752050, India
| | - Surajit Panda
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhabha National Institute, Bhimpur-Padanpur, Via Jatni, District Khurda, Bhubaneswar, Odisha 752050, India
| | - Amareshwar Nanda
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhabha National Institute, Bhimpur-Padanpur, Via Jatni, District Khurda, Bhubaneswar, Odisha 752050, India
| | - Bidraha Bagh
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhabha National Institute, Bhimpur-Padanpur, Via Jatni, District Khurda, Bhubaneswar, Odisha 752050, India
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6
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Cook A, Newman SG. Alcohols as Substrates in Transition-Metal-Catalyzed Arylation, Alkylation, and Related Reactions. Chem Rev 2024; 124:6078-6144. [PMID: 38630862 DOI: 10.1021/acs.chemrev.4c00094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/19/2024]
Abstract
Alcohols are abundant and attractive feedstock molecules for organic synthesis. Many methods for their functionalization require them to first be converted into a more activated derivative, while recent years have seen a vast increase in the number of complexity-building transformations that directly harness unprotected alcohols. This Review discusses how transition metal catalysis can be used toward this goal. These transformations are broadly classified into three categories. Deoxygenative functionalizations, representing derivatization of the C-O bond, enable the alcohol to act as a leaving group toward the formation of new C-C bonds. Etherifications, characterized by derivatization of the O-H bond, represent classical reactivity that has been modernized to include mild reaction conditions, diverse reaction partners, and high selectivities. Lastly, chain functionalization reactions are described, wherein the alcohol group acts as a mediator in formal C-H functionalization reactions of the alkyl backbone. Each of these three classes of transformation will be discussed in context of intermolecular arylation, alkylation, and related reactions, illustrating how catalysis can enable alcohols to be directly harnessed for organic synthesis.
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Affiliation(s)
- Adam Cook
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Stephen G Newman
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
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7
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Tang Q, Song D, Zhang K, Mao W, Zhao X, Du D, Ling F, Zhong W. Development of an imidazole-based N, N-bidentate ligand for the manganese catalyzed direct coupling of nitriles with alcohols. RSC Adv 2024; 14:12978-12982. [PMID: 38655477 PMCID: PMC11033977 DOI: 10.1039/d4ra00817k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Accepted: 04/15/2024] [Indexed: 04/26/2024] Open
Abstract
3d-Metal catalyzed borrowing hydrogen (BH) reactions represent powerful and environmentally friendly approaches for the direct coupling of alcohols with nitriles to assemble various important branched nitriles. The development of simple and efficient ligands is a crucial issue in this field. In this study, we designed a series of readily available N,N-bidentate ligands that demonstrated good efficiency in the Mn-catalyzed BH reaction of alcohols and nitrile derivatives, yielding the targeted nitriles in moderate to good yields. Remarkably, the mildness and practicality of this protocol were further demonstrated by the successful synthesis of anipamil via a two-cascade borrowing hydrogen procedure.
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Affiliation(s)
- Qian Tang
- Department of Chemistry, State Key Laboratory of Natural Medicines, China Pharmaceutical University Nan Jing 210009 P. R. China
- Zhejiang Center for Drug &Cosmetic Evaluation Hangzhou 310012 P. R. China
| | - Dingguo Song
- College of Pharmaceutical Sciences, Zhejiang University of Technology Hangzhou 310014 P. R. China
| | - Kali Zhang
- College of Pharmaceutical Sciences, Zhejiang University of Technology Hangzhou 310014 P. R. China
| | - Wenhao Mao
- College of Pharmaceutical Sciences, Zhejiang University of Technology Hangzhou 310014 P. R. China
| | - Xianghua Zhao
- College of Pharmaceutical Sciences, Zhejiang University of Technology Hangzhou 310014 P. R. China
| | - Ding Du
- Department of Chemistry, State Key Laboratory of Natural Medicines, China Pharmaceutical University Nan Jing 210009 P. R. China
| | - Fei Ling
- College of Pharmaceutical Sciences, Zhejiang University of Technology Hangzhou 310014 P. R. China
| | - Weihui Zhong
- College of Pharmaceutical Sciences, Zhejiang University of Technology Hangzhou 310014 P. R. China
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8
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Guin AK, Chakraborty S, Khanra S, Chakraborty S, Paul ND. Oxygen-Dependent Ligand-Controlled Iron-Catalyzed Chemoselective Synthesis of Olefins and Vinyl Nitriles. Org Lett 2024; 26:2540-2545. [PMID: 38546405 DOI: 10.1021/acs.orglett.4c00455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2024]
Abstract
An oxygen-dependent ligand-controlled chemoselective synthesis of vinyl nitriles and E-olefins by coupling a variety of alcohols and benzyl cyanides, catalyzed by a well-characterized, air-stable, easy-to-prepare Fe(II) catalyst (1a) bearing a redox-active arylazo pincer (L1a) is reported. The azo-moiety of the ligand backbone acts as an electron and hydrogen reservoir, enabling catalyst 1a to efficiently produce a broad spectrum of vinyl nitriles and E-olefins in moderate to good yields selectively under an oxygen and argon atmosphere, respectively.
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Affiliation(s)
- Amit Kumar Guin
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Botanic Garden, Howrah 711103, India
| | - Subhajit Chakraborty
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Botanic Garden, Howrah 711103, India
| | - Subhankar Khanra
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Botanic Garden, Howrah 711103, India
| | - Santana Chakraborty
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Botanic Garden, Howrah 711103, India
| | - Nanda D Paul
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Botanic Garden, Howrah 711103, India
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9
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Donthireddy SNR, Rit A. Heteroditopic NHC Ligand Supported Manganese(I) Complexes: Synthesis, Characterization, and Activity as Non-bifunctional Phosphine-Free Catalyst for the α-Alkylation of Nitriles. Chemistry 2024; 30:e202302504. [PMID: 37807667 DOI: 10.1002/chem.202302504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 10/01/2023] [Accepted: 10/02/2023] [Indexed: 10/10/2023]
Abstract
In the present work, several manganese(I) complexes of chelating heteroditopic ligands Mn1-3, featuring ImNHC (imidazol-2-ylidene) connected to a 1,2,3-triazole-N or tzNHC (1,2,3-triazol-5-ylidene) donors via a methylene spacer, with possible modifications at the triazole backbone have been synthesized and completely characterized. Notably, the CO stretching frequencies, electrochemical analysis, and frontier orbital analysis certainly suggest that the chelating ImNHC-tzNHC ligands have stronger donation capabilities than the related ImNHC-Ntz ligand in the synthesized complexes. Moreover, these well-defined phosphine-free Mn(I)-NHC complexes have been found to be effective non-bifunctional catalysts for the α-alkylation of nitriles using alcohols and importantly, the catalyst Mn1 containing ImNHC connected to a weaker triazole-N donor displayed higher activity compared to Mn2/Mn3 containing an unsymmetrical bis-carbene donors (ImNHC and tzNHC). A wide range of aryl nitriles were coupled with diverse (hetero)aromatic as well as aliphatic alcohols to get the corresponding products in good to excellent yields (32 examples, up to 95 % yield). The detailed mechanistic studies including deuterium labelling experiments reveal that the reaction follows a Borrowing Hydrogen pathway.
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Affiliation(s)
| | - Arnab Rit
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India
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10
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Izquierdo-Aranda L, Adam R, Cabrero-Antonino JR. Silver Supported Nanoparticles on [Mg 4 Al-LDH] as an Efficient Catalyst for the α-Alkylation of Nitriles, Oxindoles and Other Carboxylic Acid Derivatives with Alcohols. CHEMSUSCHEM 2023:e202300818. [PMID: 37486295 DOI: 10.1002/cssc.202300818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 07/24/2023] [Accepted: 07/24/2023] [Indexed: 07/25/2023]
Abstract
An efficient heterogeneous silver-catalyzed α-alkylation of nitriles and oxindoles using alcohols via borrowing hydrogen strategy has been developed for the first time. The active nanostructured material, namely [Ag/Mg4 Al-LDH], composed by silver nanoparticles (3-4 nm average particle size) homogeneously stabilized onto a [Mg4 Al-LDH] support with suitable Brønsted basic properties, constitutes a stable catalyst for the sustainable building of novel C-C bonds from alcohols and C-nucleophiles. By applying this catalyst, a broad range of α-functionalized nitriles and oxindoles has been accessed with good to excellent isolated yields and without the addition of external bases. Moreover, the novel silver nanocatalyst has also demonstrated its successful application to the cyclization of N-[2-(hydroxymethyl)phenyl]-2-phenylacetamides to afford 3-arylquinolin-2(1H)-ones, through a one-pot dehydrogenation and intramolecular α-alkylation. Control experiments, kinetic studies, and characterization data of a variety of [Ag/LDH]-type materials confirmed the silver role in the dehydrogenation and hydrogenation steps, while [Mg4 Al-LDH] matrix is able to catalyze condensation. Interestingly, these studies suggest as key point for the successful activity of [Ag/Mg4 Al-LDH], in comparison with other [Ag/LDH]-type nanocatalysts, the suitable acid-base properties of this material.
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Affiliation(s)
- Luis Izquierdo-Aranda
- Instituto de Tecnología Química, Universitat Politécnica de València-Consejo Superior Investigaciones Científicas (UPV-CSIC), Avda. de los Naranjos s/n, 46022, València, Spain
| | - Rosa Adam
- Instituto de Tecnología Química, Universitat Politécnica de València-Consejo Superior Investigaciones Científicas (UPV-CSIC), Avda. de los Naranjos s/n, 46022, València, Spain
- Departament de Química Orgànica, Facultat de Farmàcia, Universitat de València, Av. Vicent Andrés Estellés s/n, 46100, Burjassot, València, Spain
| | - Jose R Cabrero-Antonino
- Instituto de Tecnología Química, Universitat Politécnica de València-Consejo Superior Investigaciones Científicas (UPV-CSIC), Avda. de los Naranjos s/n, 46022, València, Spain
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11
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Bera K, Mukherjee A. Chemoselective α-Alkylation of Nitriles with Primary Alcohols by Manganese(I)-Catalysis. Chem Asian J 2023:e202300157. [PMID: 37156742 DOI: 10.1002/asia.202300157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 04/12/2023] [Indexed: 05/10/2023]
Abstract
A sustainable and easy-to-use protocol for the alkylation of aryl nitriles with the earth-abundant manganese(I) catalyst is presented. The alkylation reaction employs readily available nitriles and naturally abundant alcohols as the coupling partners. The reaction proceeds chemoselectively and encompasses a broad substrate scope with good to excellent yields. The catalytic reaction yields selectively α-branched nitriles and water as the sole byproduct. Experimental studies were executed to understand the mechanism of the catalytic reaction.
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Affiliation(s)
- Krishanu Bera
- Department of Chemistry, Indian Institute of Technology Bhilai, GEC Campus, Sejbahar, Raipur, 492015, Chhattisgarh, India
| | - Arup Mukherjee
- Department of Chemistry, Indian Institute of Technology Bhilai, GEC Campus, Sejbahar, Raipur, 492015, Chhattisgarh, India
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12
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Putta RR, Chun S, Lee SB, Hong J, Choi SH, Oh DC, Hong S. Chemoselective α-Alkylation and α-Olefination of Arylacetonitriles with Alcohols via Iron-Catalyzed Borrowing Hydrogen and Dehydrogenative Coupling. J Org Chem 2022; 87:16378-16389. [PMID: 36417466 DOI: 10.1021/acs.joc.2c02050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
α-Alkyl and α-olefin nitriles are very important for organic synthesis and medicinal chemistry. However, different types of catalysts are employed to achieve either α-alkylation of nitriles by borrowing hydrogen or α-olefination by dehydrogenative coupling methods. Designing and developing high-performance earth-abundant catalysts that can procure different products from the same starting materials remain a great challenge. Herein, we report an iron(0) catalyst system that achieves chemoselectivity between borrowing hydrogen and dehydrogenative coupling protocols by simply changing the base. A broad range of nitriles and alcohols, including benzylic, linear aliphatic, cycloaliphatic, heterocyclic, and allylic alcohols, were selectively and efficiently converted to the corresponding products. Mechanistic studies reveal that the reaction mechanism proceeds through a dehydrogenative pathway. This iron catalytic protocol is environmentally benign and atom-efficient with the liberation of H2 and H2O as green byproducts.
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Affiliation(s)
- Ramachandra Reddy Putta
- BK 21 Plus Project, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Simin Chun
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Seok Beom Lee
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Junhwa Hong
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Seung Hyun Choi
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Dong-Chan Oh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Suckchang Hong
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
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13
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Genç S, Arslan B, Gülcemal D, Gülcemal S, Günnaz S. Nickel-catalyzed alkylation of ketones and nitriles with primary alcohols. Org Biomol Chem 2022; 20:9753-9762. [PMID: 36448637 DOI: 10.1039/d2ob01787c] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Nickel(II)-salen or nickel(II)-salphen catalyzed α-alkylation of ketones and nitriles with primary alcohols is reported. Various α-alkylated ketones and nitriles were obtained in high yields through a borrowing hydrogen strategy by using 1-3 mol% of nickel catalyst and a catalytic amount of NaOH (5-10 mol%) under aerobic conditions.
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Affiliation(s)
- Sertaç Genç
- Ege University, Department of Chemistry, 35100 Bornova, Izmir, Turkey.
| | - Burcu Arslan
- Ege University, Department of Chemistry, 35100 Bornova, Izmir, Turkey.
| | - Derya Gülcemal
- Ege University, Department of Chemistry, 35100 Bornova, Izmir, Turkey.
| | - Süleyman Gülcemal
- Ege University, Department of Chemistry, 35100 Bornova, Izmir, Turkey.
| | - Salih Günnaz
- Ege University, Department of Chemistry, 35100 Bornova, Izmir, Turkey.
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14
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Late stage modifications of phosphine oxide ligands by iron‐catalyzed hydrogen borrowing reactions. J Organomet Chem 2022. [DOI: 10.1016/j.jorganchem.2022.122510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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15
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Wu X, Ma W, Tang W, Xue D, Xiao J, Wang C. Fe‐Catalyzed Amidation of Allylic Alcohols by Borrowing Hydrogen Catalysis. Chemistry 2022; 28:e202201829. [DOI: 10.1002/chem.202201829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Indexed: 11/06/2022]
Affiliation(s)
- Xiaoyun Wu
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical Engineering Shaanxi Normal University 710062 Xi'an P. R. China
| | - Wei Ma
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical Engineering Shaanxi Normal University 710062 Xi'an P. R. China
- School of Basic Medical Science Ningxia Medical University 750004 Yinchuan P. R. China
| | - Weijun Tang
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical Engineering Shaanxi Normal University 710062 Xi'an P. R. China
| | - Dong Xue
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical Engineering Shaanxi Normal University 710062 Xi'an P. R. China
| | - Jianliang Xiao
- Department of Chemistry University of Liverpool L69 7ZD Liverpool UK
| | - Chao Wang
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical Engineering Shaanxi Normal University 710062 Xi'an P. R. China
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16
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Liu X, Sotiropoulos J, Taillefer M. A New Route to
E
‐Stilbenes through the Transition‐Metal‐Free KO
t
Bu/DMF‐Promoted Direct Coupling of Alcohols with Phenyl Acetonitriles. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Xiaoping Liu
- ICGM Université de Montpellier, <orgDiv/CNRS, ENSCM 34296 Montpellier France
| | | | - Marc Taillefer
- ICGM Université de Montpellier, <orgDiv/CNRS, ENSCM 34296 Montpellier France
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17
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Davies AM, Li ZY, Stephenson CRJ, Szymczak NK. Valorization of Ethanol: Ruthenium-Catalyzed Guerbet and Sequential Functionalization Processes. ACS Catal 2022. [DOI: 10.1021/acscatal.2c01570] [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)
- Alex M. Davies
- University of Michigan, 930 N. University, Ann Arbor, Michigan 48109, United States
| | - Zhong-Yuan Li
- University of Michigan, 930 N. University, Ann Arbor, Michigan 48109, United States
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18
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Mondal A, Sharma R, Dutta B, Pal D, Srimani D. Well-Defined NNS-Mn Complex Catalyzed Selective Synthesis of C-3 Alkylated Indoles and Bisindolylmethanes Using Alcohols. J Org Chem 2022; 87:3989-4000. [PMID: 35258302 DOI: 10.1021/acs.joc.1c02702] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Herein, we demonstrated Mn-catalyzed selective C-3 functionalization of indoles with alcohols. The developed catalyst can also furnish bis(indolyl)methanes from the same set of substrates under slightly modified reaction conditions. Mechanistic studies reveal that the C-3 functionalization of indoles is going via a borrowing hydrogen pathway. To highlight the practical utility, a diverse range of substrates including nine structurally important drug molecules are synthesized. Furthermore, we also introduced a one-pot cascade strategy for synthesizing C-3 functionalized indoles directly from 2-aminophenyl ethanol and alcohol.
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Affiliation(s)
- Avijit Mondal
- Department of Chemistry, Indian Institute of Technology-Guwahati, Kamrup, Assam 781039, India
| | - Rahul Sharma
- Department of Chemistry, Indian Institute of Technology-Guwahati, Kamrup, Assam 781039, India
| | - Bishal Dutta
- Department of Chemistry, Indian Institute of Technology-Guwahati, Kamrup, Assam 781039, India
| | - Debjyoti Pal
- Department of Chemistry, Indian Institute of Technology-Guwahati, Kamrup, Assam 781039, India
| | - Dipankar Srimani
- Department of Chemistry, Indian Institute of Technology-Guwahati, Kamrup, Assam 781039, India
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19
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Affiliation(s)
- Arpita Singh
- Department of Chemistry & Biochemistry, Texas Tech University, Lubbock, Texas 79409, United States
- Chemistry & Biochemistry, University of California Merced, Merced, California 95343, United States
| | - Michael Findlater
- Department of Chemistry & Biochemistry, Texas Tech University, Lubbock, Texas 79409, United States
- Chemistry & Biochemistry, University of California Merced, Merced, California 95343, United States
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20
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Yu K, Chen Q, Liu W. Iron-catalysed quinoline synthesis via acceptorless dehydrogenative coupling. Org Chem Front 2022. [DOI: 10.1039/d2qo01386j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
An iron-catalysed atom-economical and straightforward methodology for the synthesis of quinolines from α-2-aminoaryl alcohols and secondary alcohols is presented.
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Affiliation(s)
- Ke Yu
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry and Chemical Engineering, Donghua University, Shanghai 201620, P. R. China
| | - Qianjin Chen
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry and Chemical Engineering, Donghua University, Shanghai 201620, P. R. China
| | - Weiping Liu
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry and Chemical Engineering, Donghua University, Shanghai 201620, P. R. China
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21
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Wang M, Gong H, Fu H, Zheng X, Chen H, Li R. Ruthenium Complex-Catalyzed Tandem Reactions of Alcohols with Acetonitriles for Synthesis of α-Substituted Amides. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202204039] [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]
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22
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Switching between borrowing hydrogen and acceptorless dehydrogenative coupling by base transition-metal catalysts. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132451] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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23
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Cui S, Wu X, Ma W, Tang W, Sun H, Xiao J, Xue D, Wang C. Synthesis of 2H-pyrroles via iron catalyzed dehydrogenative coupling and C–C bond cleavage. GREEN SYNTHESIS AND CATALYSIS 2021. [DOI: 10.1016/j.gresc.2021.04.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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24
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Paudel K, Xu S, Ding K. Switchable Cobalt-Catalyzed α-Olefination and α-Alkylation of Nitriles with Primary Alcohols. Org Lett 2021; 23:5028-5032. [PMID: 34143638 DOI: 10.1021/acs.orglett.1c01553] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The first switchable α-olefination and α-alkylation of nitriles with primary alcohols catalyzed by a well-defined base transition-metal Co complex was presented. A broad variety of nitriles and primary alcohols are selectively and efficiently converted to the corresponding products by this method. It is noteworthy that the transformation is environmentally benign and atom efficient with H2 and H2O being the sole byproducts.
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Affiliation(s)
- Keshav Paudel
- Department of Chemistry, Middle Tennessee State University, Murfreesboro, Tennessee 37132, United States.,Molecular Biosciences Program, Middle Tennessee State University, Murfreesboro, Tennessee 37132, United States
| | - Shi Xu
- Department of Chemistry, Middle Tennessee State University, Murfreesboro, Tennessee 37132, United States
| | - Keying Ding
- Department of Chemistry, Middle Tennessee State University, Murfreesboro, Tennessee 37132, United States.,Molecular Biosciences Program, Middle Tennessee State University, Murfreesboro, Tennessee 37132, United States
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25
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Reed-Berendt B, Latham DE, Dambatta MB, Morrill LC. Borrowing Hydrogen for Organic Synthesis. ACS CENTRAL SCIENCE 2021; 7:570-585. [PMID: 34056087 PMCID: PMC8155478 DOI: 10.1021/acscentsci.1c00125] [Citation(s) in RCA: 136] [Impact Index Per Article: 45.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Indexed: 05/03/2023]
Abstract
Borrowing hydrogen is a process that is used to diversify the synthetic utility of commodity alcohols. A catalyst first oxidizes an alcohol by removing hydrogen to form a reactive carbonyl compound. This intermediate can undergo a diverse range of subsequent transformations before the catalyst returns the "borrowed" hydrogen to liberate the product and regenerate the catalyst. In this way, alcohols may be used as alkylating agents whereby the sole byproduct of this one-pot reaction is water. In recent decades, significant advances have been made in this area, demonstrating many effective methods to access valuable products. This outlook highlights the diversity of metal and biocatalysts that are available for this approach, as well as the various transformations that can be performed, focusing on a selection of the most significant and recent advances. By succinctly describing and conveying the versatility of borrowing hydrogen chemistry, we anticipate its uptake will increase across a wider scientific audience, expanding opportunities for further development.
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26
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Dai H, Li W, Krause JA, Guan H. Experimental Evidence of syn H–N–Fe–H Configurational Requirement for Iron-Based Bifunctional Hydrogenation Catalysts. Inorg Chem 2021; 60:6521-6535. [DOI: 10.1021/acs.inorgchem.1c00328] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Huiguang Dai
- Department of Chemistry, University of Cincinnati, P.O. Box 210172, Cincinnati, Ohio 45221-0172, United States
| | - Weishi Li
- Department of Chemistry, University of Cincinnati, P.O. Box 210172, Cincinnati, Ohio 45221-0172, United States
| | - Jeanette A. Krause
- Department of Chemistry, University of Cincinnati, P.O. Box 210172, Cincinnati, Ohio 45221-0172, United States
| | - Hairong Guan
- Department of Chemistry, University of Cincinnati, P.O. Box 210172, Cincinnati, Ohio 45221-0172, United States
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27
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Li WZ, Wang ZX. Nickel-catalyzed coupling of R 2P(O)Me (R = aryl or alkoxy) with (hetero)arylmethyl alcohols. Org Biomol Chem 2021; 19:2233-2242. [PMID: 33616130 DOI: 10.1039/d1ob00086a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
α-Alkylation of methyldiarylphosphine oxides with (hetero)arylmethyl alcohols was performed under nickel catalysis. Various arylmethyl and heteroarylmethyl alcohols can be used in this transformation. A series of methyldiarylphosphine oxides were alkylated with 30-90% yields. Functional groups on the aromatic rings of methyldiarylphosphine oxides or arylmethyl alcohols including OMe, NMe2, SMe, CF3, Cl, and F groups can be tolerated. The conditions are also suitable for the α-alkylation reaction of dialkyl methylphosphonates.
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Affiliation(s)
- Wei-Ze Li
- CAS Key Laboratory of Soft Matter Chemistry and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China.
| | - Zhong-Xia Wang
- CAS Key Laboratory of Soft Matter Chemistry and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China. and Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, P. R. China
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28
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Arslan B, Gülcemal S. α-Alkylation of arylacetonitriles with primary alcohols catalyzed by backbone modified N-heterocyclic carbene iridium(i) complexes. Dalton Trans 2021; 50:1788-1796. [DOI: 10.1039/d0dt04082g] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
α-Alkylation of arylacetonitriles with primary alcohols was achieved by using backbone-modified NHC–IrI complexes as catalysts with turnover numbers of up to 960.
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Affiliation(s)
- Burcu Arslan
- Department of Chemistry
- Ege University
- 35100 Bornova
- Turkey
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29
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Li C, Bai L, Ge MT, Xia AB, Wang Y, Qiu YR, Xu DQ. Base-controlled chemoselectivity: direct coupling of alcohols and acetonitriles to synthesise α-alkylated arylacetonitriles or acetamides. NEW J CHEM 2021. [DOI: 10.1039/d1nj02243a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
[Cp*IrCl2]2 with a phosphine-free ligand α,α,α-terpyridine shows high catalytic performance in chemodivergent synthesis of α-alkylated arylacetonitriles in the presence of K2CO3 and α-alkylated acetamides in the presence of tBuOK, respectively.
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Affiliation(s)
- Chen Li
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014, China
| | - Liang Bai
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014, China
| | - Min-Tong Ge
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014, China
| | - Ai-Bao Xia
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014, China
| | - Ying Wang
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014, China
| | - Yuan-Rui Qiu
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014, China
| | - Dan-Qian Xu
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014, China
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30
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Nguyen DH, Merel D, Merle N, Trivelli X, Capet F, Gauvin RM. Isonitrile ruthenium and iron PNP complexes: synthesis, characterization and catalytic assessment for base-free dehydrogenative coupling of alcohols. Dalton Trans 2021; 50:10067-10081. [PMID: 34195731 DOI: 10.1039/d1dt01722e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Neutral and ionic ruthenium and iron aliphatic PNHP-type pincer complexes (PNHP = NH(CH2CH2PiPr2)2) bearing benzyl, n-butyl or tert-butyl isocyanide ancillary ligands have been prepared and characterized. Reaction of [RuCl2(PNHP)]2 with one equivalent CN-R per ruthenium center affords complexes [RuCl2(PNHP)(CNR)] (R = benzyl, 1a, R = n-butyl, 1b, R = t-butyl, 1c), with cationic [RuCl(PNHP)(CNR)2]Cl 2a-c as side-products. Dichloride species 1a-c react with excess NaBH4 to afford [RuH(PNHP)(BH4)(CN-R)] 3a-c, analogues to benchmark Takasago catalyst [RuH(PNHP)(BH4)(CO)]. Reaction of 1a-c with a single equivalent of NaBH4 results in formation of [RuHCl(PNHP) (CN-R)] (4a-c), from which 3a-c can be prepared upon reaction with excess NaBH4. Use of one equivalent of NaHBEt3 with 4a and 4c affords bishydrides [Ru(H)2(PNHP)(CN-R)] 5a and 5c. Deprotonation of 4c by KOtBu generates amido derivative [RuH(PNP)(CN-t-Bu)] (6, PNP = -N(CH2CH2PiPr2)2), unstable in solution. Addition of excess benzylisonitrile to 4a provides cationic hydride [RuH(PNHP) (CN-CH2Ph)2]Cl (7). Concerning iron chemistry, [Fe(PNHP)Br2] reacts with one equivalent of benzylisonitrile to afford [FeBr(PNHP)(CNCH2Ph)2]Br (8). The outer-sphere bromide anion can be exchanged by salt metathesis with NaBPh4 to generate [FeBr(PNHP) (CNCH2Ph)2](BPh4) (9). Cationic hydride species [FeH(PNHP) (CN-t-Bu)2](BH4) (10) is prepared from consecutive addition of excess CN-t-Bu and NaBH4 on [Fe(PNPH)Br2]. Ruthenium complexes 3a-c are active in acceptorless alcohol dehydrogenative coupling into ester under base-free conditions. From kinetic follow-up, the trend in initial activity is 3a ≈ 3b > [RuH(PNHP)(BH4)(CO)] ≫ 3c; for robustness, [RuH(BH4)(CO)(PNHP)] > 3a > 3b ≫ 3c. Hypotheses are given to account for the observed deactivation. Complexes 3b, 3c, 4a, 4c, 5c, 7, cis-8 and 9 were characterized by X-ray crystallography.
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Affiliation(s)
- Duc Hanh Nguyen
- Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
| | - Delphine Merel
- Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
| | - Nicolas Merle
- Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
| | - Xavier Trivelli
- Université de Lille, CNRS, INRA, Centrale Lille Institute, Univ. Artois, FR 2638 - IMEC - Institut Michel-Eugène Chevreul, F-59000 Lille, France
| | - Frédéric Capet
- Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
| | - Régis M Gauvin
- Chimie ParisTech, PSL University, CNRS, Institut de Recherche de Chimie Paris, 75005 Paris, France.
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31
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Hu M, Jiang Y, Sun N, Hu B, Shen Z, Hu X, Jin L. Nickel-catalyzed C3-alkylation of indoles with alcohols via a borrowing hydrogen strategy. NEW J CHEM 2021. [DOI: 10.1039/d1nj01581h] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
An efficient Ni-catalyzed C3-alkylation of indoles with alcohols via a borrowing hydrogen pathway was achieved utilizing an N,O-donor coordinated nickel complex as the precatalyst.
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Affiliation(s)
- Miao Hu
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310032
- P. R. China
| | - Yong Jiang
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310032
- P. R. China
| | - Nan Sun
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310032
- P. R. China
| | - Baoxiang Hu
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310032
- P. R. China
| | - Zhenlu Shen
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310032
- P. R. China
| | - Xinquan Hu
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310032
- P. R. China
| | - Liqun Jin
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310032
- P. R. China
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
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32
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Paudel K, Xu S, Ding K. α-Alkylation of Nitriles with Primary Alcohols by a Well-Defined Molecular Cobalt Catalyst. J Org Chem 2020; 85:14980-14988. [PMID: 33136400 DOI: 10.1021/acs.joc.0c01822] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The α-alkylation of nitriles with primary alcohols to selectively synthesize nitriles by a well-defined molecular homogeneous cobalt catalyst is presented. Thirty-two examples with up to 95% yield are reported. Remarkably, this transformation is environmentally friendly and atom economical with water as the only byproduct.
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Affiliation(s)
- Keshav Paudel
- Department of Chemistry, Middle Tennessee State University, Murfreesboro, Tennessee 37132, United States.,Molecular Biosciences Program, Middle Tennessee State University, Murfreesboro, Tennessee 37132, United States
| | - Shi Xu
- Department of Chemistry, Middle Tennessee State University, Murfreesboro, Tennessee 37132, United States
| | - Keying Ding
- Department of Chemistry, Middle Tennessee State University, Murfreesboro, Tennessee 37132, United States.,Molecular Biosciences Program, Middle Tennessee State University, Murfreesboro, Tennessee 37132, United States
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33
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Panda S, Saha R, Sethi S, Ghosh R, Bagh B. Efficient α-Alkylation of Arylacetonitriles with Secondary Alcohols Catalyzed by a Phosphine-Free Air-Stable Iridium(III) Complex. J Org Chem 2020; 85:15610-15621. [PMID: 33197191 DOI: 10.1021/acs.joc.0c02400] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A well-defined and readily available air-stable dimeric iridium(III) complex catalyzed α-alkylation of arylacetonitriles using secondary alcohols with the liberation of water as the only byproduct is reported. The α-alkylations were efficiently performed at 120 °C under solvent-free conditions with very low (0.1-0.01 mol %) catalyst loading. Various secondary alcohols including cyclic and acyclic alcohols and a wide variety of arylacetonitriles bearing different functional groups were converted into the corresponding α-alkylated products in good yields. Mechanistic study revealed that the reaction proceeds via alcohol activation by metal-ligand cooperation with the formation of reactive iridium-hydride species.
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Affiliation(s)
- Surajit Panda
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), HBNI, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Bhubaneswar, Odisha 752050, India
| | - Ratnakar Saha
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), HBNI, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Bhubaneswar, Odisha 752050, India
| | - Subrat Sethi
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), HBNI, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Bhubaneswar, Odisha 752050, India
| | - Rahul Ghosh
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), HBNI, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Bhubaneswar, Odisha 752050, India
| | - Bidraha Bagh
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), HBNI, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Bhubaneswar, Odisha 752050, India
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34
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Ekanayake DA, Chakraborty A, Krause JA, Guan H. Steric Effects of HN(CH2CH2PR2)2 on the Nuclearity of Copper Hydrides. Inorg Chem 2020; 59:12817-12828. [DOI: 10.1021/acs.inorgchem.0c01865] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Dewmi A. Ekanayake
- Department of Chemistry, University of Cincinnati, P.O. Box 210172, Cincinnati, Ohio 45221-0172, United States
| | - Arundhoti Chakraborty
- Department of Chemistry, University of Cincinnati, P.O. Box 210172, Cincinnati, Ohio 45221-0172, United States
| | - Jeanette A. Krause
- Department of Chemistry, University of Cincinnati, P.O. Box 210172, Cincinnati, Ohio 45221-0172, United States
| | - Hairong Guan
- Department of Chemistry, University of Cincinnati, P.O. Box 210172, Cincinnati, Ohio 45221-0172, United States
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35
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Landge VG, Babu R, Yadav V, Subaramanian M, Gupta V, Balaraman E. Iron-Catalyzed Direct Julia-Type Olefination of Alcohols. J Org Chem 2020; 85:9876-9886. [PMID: 32600041 DOI: 10.1021/acs.joc.0c01173] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Herein, we report an iron-catalyzed, convenient, and expedient strategy for the synthesis of styrene and naphthalene derivatives with the liberation of dihydrogen. The use of a catalyst derived from an earth-abundant metal provides a sustainable strategy to olefins. This method exhibits wide substrate scope (primary and secondary alcohols) functional group tolerance (amino, nitro, halo, alkoxy, thiomethoxy, and S- and N-heterocyclic compounds) that can be scaled up. The unprecedented synthesis of 1-methyl naphthalenes proceeds via tandem methenylation/double dehydrogenation. Mechanistic study shows that the cleavage of the C-H bond of alcohol is the rate-determining step.
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Affiliation(s)
- Vinod G Landge
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati 517507, India
| | - Reshma Babu
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati 517507, India
| | - Vinita Yadav
- Organic Chemistry Division, Dr. Homi Bhabha Road, CSIR-National Chemical Laboratory (CSIR-NCL), Pune 411008, India
| | - Murugan Subaramanian
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati 517507, India
| | - Virendrakumar Gupta
- Polymer Synthesis & Catalysis, Reliance Research & Development Centre, Reliance Industries Limited, Ghansoli, Navi Mumbai 400701, India
| | - Ekambaram Balaraman
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati 517507, India
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36
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Chen XJ, Gui QW, Yi R, Yu X, Wu ZL, Huang Y, Cao Z, He WM. Copper(i)-catalyzed intermolecular cyanoarylation of alkenes: convenient access to α-alkylated arylacetonitriles. Org Biomol Chem 2020; 18:5234-5237. [PMID: 32602499 DOI: 10.1039/d0ob01055c] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel Cu(i)-catalyzed intermolecular cyanoarylation of alkenes with diaryliodonium salts as a radical arylating reagent and tetra-butylammonium cyanide as an electrophilic cyanating reagent was established. A broad range of α-alkylated arylacetonitriles were efficiently constructed in good to excellent yields under base- and oxidant-free and mild conditions.
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Affiliation(s)
- Xin-Jie Chen
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecule of Ministry of Education, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China.
| | - Qing-Wen Gui
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Changsha University of Science and Technology, Changsha, 410114, China.
| | - Rongnan Yi
- Department of Chemistry, Hunan University, Changsha 410082, China
| | - Xianyong Yu
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecule of Ministry of Education, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China.
| | - Zhi-Lin Wu
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Ying Huang
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Changsha University of Science and Technology, Changsha, 410114, China.
| | - Zhong Cao
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Changsha University of Science and Technology, Changsha, 410114, China.
| | - Wei-Min He
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Changsha University of Science and Technology, Changsha, 410114, China.
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37
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Kong Y, Wang Z. Iridium‐Catalyzed α‐Alkylation of Arylacetonitriles Using Secondary and Primary Alcohols. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000244] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Ying‐Ying Kong
- CAS Key Laboratory of Soft Matter Chemistry and Department of ChemistryUniversity of Science and Technology of China Hefei Anhui 230026 P. R. China
| | - Zhong‐Xia Wang
- CAS Key Laboratory of Soft Matter Chemistry and Department of ChemistryUniversity of Science and Technology of China Hefei Anhui 230026 P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering Tianjin Tianjin 300072 P. R. China
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38
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Lan XB, Ye Z, Liu J, Huang M, Shao Y, Cai X, Liu Y, Ke Z. Sustainable and Selective Alkylation of Deactivated Secondary Alcohols to Ketones by Non-bifunctional Pincer N-heterocyclic Carbene Manganese. CHEMSUSCHEM 2020; 13:2557-2563. [PMID: 32233008 DOI: 10.1002/cssc.202000576] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Indexed: 06/10/2023]
Abstract
A sustainable and green route to access diverse functionalized ketones via dehydrogenative-dehydrative cross-coupling of primary and secondary alcohols is demonstrated. This borrowing hydrogen approach employing a pincer N-heterocyclic carbene Mn complex displays high activity and selectivity. A variety of primary and secondary alcohols are well tolerant and result in satisfactory isolated yields. Mechanistic studies suggest that this reaction proceeds via a direct outer-sphere mechanism and the dehydrogenation of the secondary alcohol substrates plays a vital role in the rate-limiting step.
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Affiliation(s)
- Xiao-Bing Lan
- School of Materials Science & Engineering, PCFM Lab, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Zongren Ye
- School of Materials Science & Engineering, PCFM Lab, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Jiahao Liu
- School of Materials Science & Engineering, PCFM Lab, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Ming Huang
- School of Materials Science & Engineering, PCFM Lab, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Youxiang Shao
- School of Materials Science & Engineering, PCFM Lab, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Xiang Cai
- Department of Light Chemical Engineering, Guangdong Polytechnic, Foshan, 528041, P. R. China
| | - Yan Liu
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, P. R. China
| | - Zhuofeng Ke
- School of Materials Science & Engineering, PCFM Lab, Sun Yat-sen University, Guangzhou, 510275, P. R. China
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39
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Huang S, Hong X, Sun Y, Cui H, Zhou Q, Lin Y, Hou X. Ru(II)‐
PBT
NN
X
N
complex bearing functional 2‐(pyridin‐2‐yl)benzo[
d
]thiazole ligand catalyzed
α
‐alkylation of nitriles with alcohols. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5451] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Shuang Huang
- Department of ChemistryFudan University Jiangwan campus 2005 Songhu Rd Shanghai 200438 China
| | - Xi Hong
- Department of ChemistryFudan University Jiangwan campus 2005 Songhu Rd Shanghai 200438 China
| | - Yong Sun
- Key laboratory of toxicologyNingde Normal University Ningde 352000 China
| | - He‐Zhen Cui
- Department of ChemistryFudan University Jiangwan campus 2005 Songhu Rd Shanghai 200438 China
| | - Quan Zhou
- Department of ChemistryFudan University Jiangwan campus 2005 Songhu Rd Shanghai 200438 China
| | - Yue‐Jian Lin
- Department of ChemistryFudan University Jiangwan campus 2005 Songhu Rd Shanghai 200438 China
| | - Xiu‐Feng Hou
- Department of ChemistryFudan University Jiangwan campus 2005 Songhu Rd Shanghai 200438 China
- Key laboratory of toxicologyNingde Normal University Ningde 352000 China
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan Shihezi 832003 China
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40
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Tan Z, Ci C, Yang J, Wu Y, Cao L, Jiang H, Zhang M. Catalytic Conversion of N-Heteroaromatics to Functionalized Arylamines by Merging Hydrogen Transfer and Selective Coupling. ACS Catal 2020. [DOI: 10.1021/acscatal.0c00394] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Zhenda Tan
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, People’s Republic of China
| | - Chenggang Ci
- Key Laboratory of Computational Catalytic Chemistry of Guizhou Province, Department of Chemistry and Chemical Engineering, Qiannan Normal University for Nationalities, Duyun 558000, People’s Republic of China
| | - Jian Yang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, People’s Republic of China
| | - Yang Wu
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, People’s Republic of China
| | - Liang Cao
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, People’s Republic of China
| | - Huanfeng Jiang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, People’s Republic of China
| | - Min Zhang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, People’s Republic of China
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41
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Bera S, Bera A, Banerjee D. Nickel-catalyzed hydrogen-borrowing strategy: chemo-selective alkylation of nitriles with alcohols. Chem Commun (Camb) 2020; 56:6850-6853. [PMID: 32432612 DOI: 10.1039/d0cc02261f] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The first nickel-catalyzed hydrogen-borrowing alkylation of a series of aryl acetonitriles with a variety of aryl, heteroaryl, allylic and alkyl alcohols releasing water as the by-product (>33 examples, up to 90% yield) is reported.
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Affiliation(s)
- Sourajit Bera
- Department of Chemistry, Laboratory of Catalysis and Organic Synthesis, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India.
| | - Atanu Bera
- Department of Chemistry, Laboratory of Catalysis and Organic Synthesis, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India.
| | - Debasis Banerjee
- Department of Chemistry, Laboratory of Catalysis and Organic Synthesis, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India.
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42
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Hydrogenation Reactions Catalyzed by PNP-Type Complexes Featuring a HN(CH2CH2PR2)2 Ligand. TOP ORGANOMETAL CHEM 2020. [DOI: 10.1007/3418_2020_63] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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43
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Yadav V, Landge VG, Subaramanian M, Balaraman E. Manganese-Catalyzed α-Olefination of Nitriles with Secondary Alcohols. ACS Catal 2019. [DOI: 10.1021/acscatal.9b02811] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Vinita Yadav
- Organic Chemistry Division, CSIR—National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune − 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad − 201002, India
| | - Vinod G. Landge
- Organic Chemistry Division, CSIR—National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune − 411008, India
| | - Murugan Subaramanian
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati − 517507, India
| | - Ekambaram Balaraman
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati − 517507, India
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44
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Huo RP, Zhang X, Zhang CF, Li XX. Computational Insight into the Mechanism of Ruthenium(II)-Catalyzed α-Alkylation of Arylmethyl Nitriles Using Alcohols. J Phys Chem A 2019; 123:10263-10272. [PMID: 31661954 DOI: 10.1021/acs.jpca.9b07043] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The ruthenium(II)-catalyzed α-alkylation reaction of arylmethyl nitriles (phenylacetonitrile) using alcohols (ethanol) in toluene has been extensively investigated by means of SMD-M06-2X/6-311G(d,p)-LANL2dz (LAnL2dz for Ru, 6-311G(d,p) for other atoms) calculations. Detailed mechanistic schemes have been proposed and discussed. The catalytically active Ru(II) complex was generated by the base-induced KCl elimination from the catalyst precursor [(PNPPh)RuHCl(CO)]. The overall Ru(II) catalytic cycle consists of three basic processes: (1) ethanol-to-aldehyde transformation catalyzed by the 16-electron unsaturated ruthenium pincer catalyst; (2) a 16-electron unsaturated ruthenium pincer catalyst catalyzed condensation reaction of arylmethyl nitrile with aldehyde, which leads to PhC(CN)=CHCH3; (3) hydrogenation of PhC(CN)=CHCH3, which leads to the formation of the α-alkylated arylmethyl nitrile product (PhCH(CH2CH3)CN). The DFT results revealed that the rate-determining barrier of the overall reaction was 23.9 kcal/mol of the H-transfer step in the third process. The reaction of PhC(CN)=CHCH3 with the dihydride Ru complex, which is generated in the ethanol-to-aldehyde transformation process, is the more preferable hydrogenation mechanism than hydrogenation of vinyl nitrile-Ru complex by H2. Using alcohol as the reactant not only fulfills the requirement of the borrowing-H strategy but also lowers the barriers of the H-migration steps.
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Affiliation(s)
- Rui-Ping Huo
- Department of Chemistry , Taiyuan Normal University , Jinzhong 030619 , China.,Humic Acid Engineering and Technology Research Center of Shanxi Province , Jinzhong 030619 , China
| | - Xiang Zhang
- Key Laboratory of Magnetic Molecules & Magnetic Information Materials Ministry of Education, The School of Chemical and Material Science , Shanxi Normal University , Linfen 041004 , China
| | - Cai-Feng Zhang
- Department of Chemistry , Taiyuan Normal University , Jinzhong 030619 , China.,Humic Acid Engineering and Technology Research Center of Shanxi Province , Jinzhong 030619 , China
| | - Xia-Xia Li
- Department of Chemistry , Taiyuan Normal University , Jinzhong 030619 , China
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45
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Ligand-controlled phosphine-free Co(II)-catalysed cross-coupling of secondary and primary alcohols. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.130640] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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46
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Latham DE, Polidano K, Williams JMJ, Morrill LC. One-Pot Conversion of Allylic Alcohols to α-Methyl Ketones via Iron-Catalyzed Isomerization-Methylation. Org Lett 2019; 21:7914-7918. [PMID: 31536370 PMCID: PMC7007281 DOI: 10.1021/acs.orglett.9b02900] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Indexed: 11/28/2022]
Abstract
A one-pot iron-catalyzed conversion of allylic alcohols to α-methyl ketones has been developed. This isomerization-methylation strategy utilized a (cyclopentadienone)iron(0) carbonyl complex as precatalyst and methanol as the C1 source. A diverse range of allylic alcohols undergoes isomerization-methylation to form α-methyl ketones in good isolated yields (up to 84% isolated yield).
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Affiliation(s)
- Daniel E. Latham
- Cardiff Catalysis
Institute, School of Chemistry, Cardiff
University, Main Building,
Park Place, Cardiff, CF10 3AT, U.K.
| | - Kurt Polidano
- Cardiff Catalysis
Institute, School of Chemistry, Cardiff
University, Main Building,
Park Place, Cardiff, CF10 3AT, U.K.
| | | | - Louis C. Morrill
- Cardiff Catalysis
Institute, School of Chemistry, Cardiff
University, Main Building,
Park Place, Cardiff, CF10 3AT, U.K.
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47
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Lan XB, Ye Z, Huang M, Liu J, Liu Y, Ke Z. Nonbifunctional Outer-Sphere Strategy Achieved Highly Active α-Alkylation of Ketones with Alcohols by N-Heterocyclic Carbene Manganese (NHC-Mn). Org Lett 2019; 21:8065-8070. [PMID: 31525058 DOI: 10.1021/acs.orglett.9b03030] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The unusual nonbifunctional outer-sphere strategy was successfully utilized in developing an easily accessible N-heterocyclic carbene manganese (NHC-Mn) system for highly active α-alkylation of ketones with alcohols. This system was efficient for a wide range of ketones and alcohols under mild reaction conditions, and also for the green synthesis of quinoline derivatives. The direct outer-sphere mechanism and the high activity of the present system demonstrate the potential of nonbifunctional outer-sphere strategy in catalyst design for acceptorless dehydrogenative transformations.
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Affiliation(s)
- Xiao-Bing Lan
- School of Materials Science and Engineering, PCFM Lab , Sun Yat-sen University , Guangzhou 510275 , People's Republic of China
| | - Zongren Ye
- School of Materials Science and Engineering, PCFM Lab , Sun Yat-sen University , Guangzhou 510275 , People's Republic of China
| | - Ming Huang
- School of Materials Science and Engineering, PCFM Lab , Sun Yat-sen University , Guangzhou 510275 , People's Republic of China
| | - Jiahao Liu
- School of Materials Science and Engineering, PCFM Lab , Sun Yat-sen University , Guangzhou 510275 , People's Republic of China
| | - Yan Liu
- School of Chemical Engineering and Light Industry , Guangdong University of Technology , Guangzhou 510006 , People's Republic of China
| | - Zhuofeng Ke
- School of Materials Science and Engineering, PCFM Lab , Sun Yat-sen University , Guangzhou 510275 , People's Republic of China
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48
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Polidano K, Williams JMJ, Morrill LC. Iron-Catalyzed Borrowing Hydrogen β- C(sp 3)-Methylation of Alcohols. ACS Catal 2019; 9:8575-8580. [PMID: 32064149 PMCID: PMC7011770 DOI: 10.1021/acscatal.9b02461] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 07/30/2019] [Indexed: 12/26/2022]
Abstract
Herein we report the iron-catalyzed β-C(sp3)-methylation of primary alcohols using methanol as a C1 building block. This borrowing hydrogen approach employs a well-defined bench-stable (cyclopentadienone)iron(0) carbonyl complex as precatalyst (5 mol %) and enables a diverse selection of substituted 2-arylethanols to undergo β-C(sp3)-methylation in good isolated yields (24 examples, 65% average yield).
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Affiliation(s)
- Kurt Polidano
- Cardiff
Catalysis Institute, School of Chemistry,
Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, U.K.
| | | | - Louis C. Morrill
- Cardiff
Catalysis Institute, School of Chemistry,
Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, U.K.
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49
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Ma W, Zhang X, Fan J, Liu Y, Tang W, Xue D, Li C, Xiao J, Wang C. Iron-Catalyzed Anti-Markovnikov Hydroamination and Hydroamidation of Allylic Alcohols. J Am Chem Soc 2019; 141:13506-13515. [DOI: 10.1021/jacs.9b05221] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Wei Ma
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an, 710062, China
| | - Xiaohui Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an, 710062, China
| | - Juan Fan
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an, 710062, China
| | - Yuxuan Liu
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an, 710062, China
| | - Weijun Tang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an, 710062, China
| | - Dong Xue
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an, 710062, China
| | - Chaoqun Li
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an, 710062, China
| | - Jianliang Xiao
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an, 710062, China
- Department of Chemistry, University of Liverpool, Liverpool, L69 7ZD, U.K
| | - Chao Wang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an, 710062, China
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50
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Mamidala R, Biswal P, Subramani MS, Samser S, Venkatasubbaiah K. Palladacycle-Phosphine Catalyzed Methylation of Amines and Ketones Using Methanol. J Org Chem 2019; 84:10472-10480. [DOI: 10.1021/acs.joc.9b00983] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Ramesh Mamidala
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Bhubaneswar, HBNI, Bhubaneswar-752050, Odisha, India
| | - Priyabrata Biswal
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Bhubaneswar, HBNI, Bhubaneswar-752050, Odisha, India
| | - M. Siva Subramani
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Bhubaneswar, HBNI, Bhubaneswar-752050, Odisha, India
| | - Shaikh Samser
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Bhubaneswar, HBNI, Bhubaneswar-752050, Odisha, India
| | - Krishnan Venkatasubbaiah
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Bhubaneswar, HBNI, Bhubaneswar-752050, Odisha, India
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