1
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Brodie CN, Goodfellow AS, Andrews MJ, Owen AE, Bühl M, Kumar A. Direct synthesis of partially ethoxylated branched polyethylenimine from ethanolamine. Nat Commun 2024; 15:6253. [PMID: 39048574 PMCID: PMC11269587 DOI: 10.1038/s41467-024-50403-z] [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: 01/03/2024] [Accepted: 07/09/2024] [Indexed: 07/27/2024] Open
Abstract
We report here a method to make a branched and partially ethoxylated polyethyleneimine derivative directly from ethanolamine. The polymerization reaction is catalysed by a pincer complex of Earth-abundant metal, manganese, and produces water as the only byproduct. Industrial processes to produce polyethyleneimines involve the transformation of ethanolamine to a highly toxic chemical, aziridine, by an energy-intensive/waste-generating process followed by the ring-opening polymerization of aziridine. The reported method bypasses the need to produce a highly toxic intermediate and presents advantages over the current state-of-the-art. We propose that the polymerization process follows a hydrogen borrowing pathway that involves (a) dehydrogenation of ethanolamine to form 2-aminoacetaldehyde, (b) dehydrative coupling of 2-aminoacetaldehyde with ethanolamine to form an imine derivative, and (c) subsequent hydrogenation of imine derivative to form alkylated amines.
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Affiliation(s)
- Claire N Brodie
- EaStCHEM, School of Chemistry, University of St Andrews, North Haugh, St Andrews, KY16 9ST, UK
| | - Alister S Goodfellow
- EaStCHEM, School of Chemistry, University of St Andrews, North Haugh, St Andrews, KY16 9ST, UK
| | - Matthew J Andrews
- EaStCHEM, School of Chemistry, University of St Andrews, North Haugh, St Andrews, KY16 9ST, UK
| | - Aniekan E Owen
- EaStCHEM, School of Chemistry, University of St Andrews, North Haugh, St Andrews, KY16 9ST, UK
| | - Michael Bühl
- EaStCHEM, School of Chemistry, University of St Andrews, North Haugh, St Andrews, KY16 9ST, UK.
| | - Amit Kumar
- EaStCHEM, School of Chemistry, University of St Andrews, North Haugh, St Andrews, KY16 9ST, UK.
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2
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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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3
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Mondal T, Leitner W, Hölscher M. Computational design of cooperatively acting molecular catalyst systems: carbene based tungsten- or molybdenum-catalysts with rhodium- or iridium-complexes for the ionic hydrogenation of N 2 to NH 3. Dalton Trans 2024; 53:7890-7898. [PMID: 38634911 DOI: 10.1039/d4dt00563e] [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
This density functional theory (DFT) study explores the efficacy of cooperative catalytic systems in enabling the ionic hydrogenation of N2 with H2, leading to NH3 formation. A set of N-heterocyclic carbene-based pincer tungsten/molybdenum metal complexes of the form [(PCP)M1(H)2] (M1 = W/Mo) were chosen to bind N2 at the respective metal centres. Simultaneously, cationic rhodium/iridium complexes of type [Cp*M2{2-(2-pyridyl)phenyl}(CH3CN)]+ (Cp* = C5(CH3)5 and M2 = Rh/Ir), are employed as cooperative coordination partners for heterolytic H2 splitting. The stepwise transfer of protons and hydrides to the bound N2 and intermediate NxHy units results in the formation of NH3. Interestingly, the calculated results reveal an encouraging low range of energy spans ranging from ∼30 to 42 kcal mol-1 depending on different combinations of ligands and metal complexes. The optimal combination of pincer ligand and metal center allowed for an energy span of unprecedented 29.7 kcal mol-1 demonstrating significant potential for molecular catalysts for the N2/H2 reaction system. While exploring obvious potential off-cycle reactions leading to catalyst deactivation, the computed results indicate that no increase in energy span would need to be expected.
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Affiliation(s)
- Totan Mondal
- Institut für Technische und Makromolekulare Chemie, RWTH Aachen University, Worringerweg 2, 52074 Aachen, Germany.
| | - Walter Leitner
- Institut für Technische und Makromolekulare Chemie, RWTH Aachen University, Worringerweg 2, 52074 Aachen, Germany.
- Max-Planck-Institut für Chemische Energiekonversion, Stiftstr. 34-36, 45470 Mülheim an der Ruhr, Germany
| | - Markus Hölscher
- Institut für Technische und Makromolekulare Chemie, RWTH Aachen University, Worringerweg 2, 52074 Aachen, Germany.
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4
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Mohite MA, Sheokand S, Mondal D, Balakrishna MS. Catalytic utility of PNN-based Mn I pincer complexes in the synthesis of quinolines and transfer hydrogenation of carbonyl derivatives. Dalton Trans 2024; 53:5580-5591. [PMID: 38433558 DOI: 10.1039/d4dt00001c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2024]
Abstract
This manuscript describes the synthesis of a triazolyl-pyridine-based phosphine, N-((diphenylphosphaneyl)methyl)-N-methyl-6-(1-phenyl-1H-1,2,3-triazol-4-yl)pyridin-2-amine, [2,6-{(PPh2)CH2N(Me)(C5H3N)(C2HN3C6H5)}] (1) (here onwards referred to as PNN) and its cationic and neutral MnI complexes and catalytic applications. The reaction of 1 with Mn(CO)5Br afforded a cationic complex [Mn(CO)3(PNN)]Br (2), which is highly stable in solid state, but in solution it gradually loses one of the CO groups to form a neutral complex [Mn(CO)2(PNN)Br] (3). Complex 2 on treatment with AgBF4 also yielded a cationic complex [Mn(CO)3(PNN)]BF4 (4). These complexes efficiently promoted the synthesis of quinoline derivatives via acceptor-less dehydrogenative coupling of 2-aminobenzyl alcohol and ketones, with complex 3 showing the highest activity with a very low catalyst loading (0.03 mol%) at 110 °C. Complex 3 (0.5 mol%) also showed excellent catalytic activity in the transfer hydrogenation of ketones and aldehydes to form respective secondary and primary alcohols.
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Affiliation(s)
- Manali A Mohite
- Phosphorus Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
| | - Sonu Sheokand
- Phosphorus Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
| | - Dipanjan Mondal
- Phosphorus Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
| | - Maravanji S Balakrishna
- Phosphorus Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
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5
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Jalwal S, Regina A, Atreya V, Paranjothy M, Chakraborty S. NNN manganese complex-catalyzed α-alkylation of methyl ketones using alcohols: an experimental and computational study. Dalton Trans 2024. [PMID: 38251673 DOI: 10.1039/d3dt04321e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2024]
Abstract
We present here a phosphine-free, quinoline-based pincer Mn catalyst for α-alkylation of methyl ketones using primary alcohols as alkyl surrogates. The C-C bond formation reaction proceeds via a hydrogen auto-transfer methodology. The sole by-product formed is water, rendering the protocol atom efficient. Electronic structure theory studies corroborated the proposed mechanism.
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Affiliation(s)
- Sachin Jalwal
- Department of Chemistry, Indian Institute of Technology Jodhpur, Karwar, Jodhpur, 342030, Rajasthan, India.
| | - Anitta Regina
- Department of Chemistry, Indian Institute of Technology Jodhpur, Karwar, Jodhpur, 342030, Rajasthan, India.
| | - Vaishnavi Atreya
- Department of Chemistry, Indian Institute of Technology Jodhpur, Karwar, Jodhpur, 342030, Rajasthan, India.
| | - Manikandan Paranjothy
- Department of Chemistry, Indian Institute of Technology Jodhpur, Karwar, Jodhpur, 342030, Rajasthan, India.
| | - Subrata Chakraborty
- Department of Chemistry, Indian Institute of Technology Jodhpur, Karwar, Jodhpur, 342030, Rajasthan, India.
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6
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Chen W, Zuo J, Sang K, Qian G, Zhang J, Chen D, Zhou X, Yuan W, Duan X. Leveraging the Proximity and Distribution of Cu-Cs Sites for Direct Conversion of Methanol to Esters/Aldehydes. Angew Chem Int Ed Engl 2024; 63:e202314288. [PMID: 37988201 DOI: 10.1002/anie.202314288] [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: 09/24/2023] [Revised: 11/17/2023] [Accepted: 11/21/2023] [Indexed: 11/23/2023]
Abstract
Methanol serves as a versatile building-block for various commodity chemicals, and the development of industrially promising strategies for its conversion remains the ultimate goal in methanol chemistry. In this study, we design a dual Cu-Cs catalytic system that enables a one-step direct conversion of methanol and methyl acetate/ethanol into high value-added esters/aldehydes, with customized chain length and saturation by leveraging the proximity and distribution of Cu-Cs sites. Cu-Cs at a millimeter-scale intimacy triggers methanol dehydrogenation and condensation, involving proton transfer, aldol formation, and aldol condensation, to obtain unsaturated esters and aldehydes with selectivities of 76.3 % and 31.1 %, respectively. Cu-Cs at a micrometer-scale intimacy significantly promotes mass transfer of intermediates across catalyst interfaces and their subsequent hydrogenation to saturated esters and aldehydes with selectivities of 67.6 % and 93.1 %, respectively. Conversely, Cu-Cs at a nanometer-scale intimacy alters reaction pathway with a similar energy barrier for the rate-determining step, but blocks the acidic-basic sites and diverts the reaction to byproducts. More importantly, an unprecedented quadruple tandem catalytic production of methyl methacrylate (MMA) is achieved by further tailoring Cu and Cs distribution across the reaction bed in the configuration of Cu-Cs||Cs, outperforming the existing industrial processes and saving at least 15 % of production costs.
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Affiliation(s)
- Wenyao Chen
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Ji Zuo
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Keng Sang
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Gang Qian
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Jing Zhang
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - De Chen
- Department of Chemical Engineering, Norwegian University of Science and Technology, 7491, Trondheim, Norway
| | - Xinggui Zhou
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Weikang Yuan
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Xuezhi Duan
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China
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7
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Yang L, Guo X, Ren Y, Gu R, Chen ZX, Zeng G. Mechanistic Insight into Acceptorless Dehydrogenation of Methanol to Syngas Catalyzed by MACHO-Type Ruthenium and Manganese Complexes: A DFT Study. Inorg Chem 2023; 62:19516-19526. [PMID: 37966423 DOI: 10.1021/acs.inorgchem.3c02619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2023]
Abstract
The acceptorless dehydrogenation of methanol to produce carbon monoxide (CO) and dihydrogen (H2) mediated by MACHO-type 1-Ru and 1-Mn complexes was theoretically investigated via density functional theory calculations. The 1-Ru-catalyzed process involves the formation of active species 4-Ru through a methanol-bridged H2 release pathway. Methanol dehydrogenation by 4-Ru yields formaldehyde and 1-Ru, followed by H2 release to regenerate 4-Ru (rate-determining step, ΔG‡ = 32.5 kcal/mol). Formaldehyde further reacts with methanol via nucleophilic attack of the MeO- ligand in the Ru complex (ΔG‡ = 9.6 kcal/mol), which is more favorable than the traditional methanol-to-formaldehyde nucleophilic attack (ΔG‡ = 33.8 kcal/mol) due to the higher nucleophilicity of MeO-. CO is ultimately produced through the methyl formate decarbonylation reaction. Accelerated H2 release in the early reaction stage compared to CO results from the initial methanol dehydrogenation and condensation of formaldehyde with methanol. In contrast, CO generation occurs later via methyl formate decarbonylation. The 1-Mn-catalyzed reaction has reduced efficiency compared to 1-Ru for the higher Gibbs energy barrier (ΔG‡ = 34.1 kcal/mol) of the rate-determining step. Excess NaOtBu promotes the reaction of CO and methanol, forming methyl formate, significantly reducing the CO/H2 ratio as the catalyst amount decreases. These findings deepen our understanding of the methanol-to-syngas transformation and can drive progress in this field.
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Affiliation(s)
- Linlin Yang
- Kuang Yaming Honors School, Nanjing University, Nanjing 210023, China
- Institute of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Xianming Guo
- Kuang Yaming Honors School, Nanjing University, Nanjing 210023, China
- Institute of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Yingzhi Ren
- Kuang Yaming Honors School, Nanjing University, Nanjing 210023, China
| | - Rong Gu
- Kuang Yaming Honors School, Nanjing University, Nanjing 210023, China
| | - Zhao-Xu Chen
- Institute of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Guixiang Zeng
- Kuang Yaming Honors School, Nanjing University, Nanjing 210023, China
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8
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Sun F, Chen X, Wang S, Sun F, Zhao SY, Liu W. Borrowing Hydrogen β-Phosphinomethylation of Alcohols Using Methanol as C1 Source by Pincer Manganese Complex. J Am Chem Soc 2023; 145:25545-25552. [PMID: 37962982 DOI: 10.1021/jacs.3c10484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2023]
Abstract
Herein, we report a manganese-catalyzed three-component coupling of β-H containing alcohols, methanol, and phosphines for the synthesis of γ-hydroxy phosphines via a borrowing hydrogen strategy. In this development, methanol serves as a sustainable C1 source. A variety of aromatic and aliphatic substituted alcohols and phosphines could undergo the dehydrogenative cross-coupling process efficiently and deliver the corresponding β-phosphinomethylated alcohol products in moderate to good yields. Mechanistic studies suggest that this transformation proceeds in a sequential manner including catalytic dehydrogenation, aldol condensation, Michael addition, and catalytic hydrogenation.
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Affiliation(s)
- Feixiang Sun
- 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
| | - Xin 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
| | - Siyi Wang
- 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
| | - Fan Sun
- 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
| | - Sheng-Yin Zhao
- 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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9
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Zhang X, Zhang Y, Ding J, Wang L, Chen W, Li X, Cui B, Zhao M, Shao Z. Synthesis of Thiophene-Substituted Ketones via Manganese-Catalyzed Dehydrogenative Coupling Reaction. Chem Asian J 2023; 18:e202300725. [PMID: 37789733 DOI: 10.1002/asia.202300725] [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: 08/18/2023] [Revised: 09/26/2023] [Accepted: 09/29/2023] [Indexed: 10/05/2023]
Abstract
This study reports an efficient and green one-step method for synthesizing thiophene-substituted ketones from 2-thiophenemethanol and ketones via dehydrogenative coupling using manganese complexes as catalysts. The manganese complex demonstrated a broad applicability under mild conditions and extended the range of usable substrates. Utilizing this strategy, we carried out an efficient and diverse reaction of ketones with 2-thiophenemethanol, and successfully synthesized a series of thiophene-substituted saturated ketones and α, β-unsaturated ketones in good isolated yields.
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Affiliation(s)
- Xiaoyu Zhang
- Flavors and Fragrance Engineering & Technology Research Center of Henan Province, College of Tobacco Science, Henan Agricultural University, Zhengzhou, 450002, P. R. China
| | - Yujie Zhang
- Technology Center of China Tobacco Hebei Industrial Co., LTD, Shijiazhuang, 050051, P. R. China
| | - Jiaqiao Ding
- Flavors and Fragrance Engineering & Technology Research Center of Henan Province, College of Tobacco Science, Henan Agricultural University, Zhengzhou, 450002, P. R. China
| | - Liusheng Wang
- Technology Center of China Tobacco Hebei Industrial Co., LTD, Shijiazhuang, 050051, P. R. China
| | - Weihua Chen
- Technology Center of China Tobacco Hebei Industrial Co., LTD, Shijiazhuang, 050051, P. R. China
| | - Xinyan Li
- Flavors and Fragrance Engineering & Technology Research Center of Henan Province, College of Tobacco Science, Henan Agricultural University, Zhengzhou, 450002, P. R. China
| | - Bing Cui
- Flavors and Fragrance Engineering & Technology Research Center of Henan Province, College of Tobacco Science, Henan Agricultural University, Zhengzhou, 450002, P. R. China
| | - Mingqin Zhao
- Flavors and Fragrance Engineering & Technology Research Center of Henan Province, College of Tobacco Science, Henan Agricultural University, Zhengzhou, 450002, P. R. China
| | - Zhihui Shao
- Flavors and Fragrance Engineering & Technology Research Center of Henan Province, College of Tobacco Science, Henan Agricultural University, Zhengzhou, 450002, P. R. China
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10
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De S, Ranjan P, Chaurasia V, Pal S, Pal S, Pandey P, Bera JK. Synchronous Proton-Hydride Transfer by a Pyrazole-Functionalized Protic Mn(I) Complex in Catalytic Alcohol Dehydrogenative Coupling. Chemistry 2023; 29:e202301758. [PMID: 37490592 DOI: 10.1002/chem.202301758] [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: 06/01/2023] [Revised: 07/23/2023] [Accepted: 07/25/2023] [Indexed: 07/27/2023]
Abstract
A series of Mn(I) complexes Mn(L1 )(CO)3 Br, Mn(L2 )(CO)3 Br, Mn(L1 )(CO)3 (OAc) and Mn(L3 )(CO)3 Br [L1 =2-(5-tert-butyl-1H-pyrazol-3-yl)-1,8-naphthyridine, L2 =2-(5-tert-butyl-1H-pyrazol-3-yl)pyridine, L3 =2-(5-tert-butyl-1-methyl-1H-pyrazol-3-yl)-1,8-naphthyridine] were synthesized and fully characterized. The acid-base equilibrium between the pyrazole and the pyrazolato forms of Mn(L1 )(CO)3 Br was studied by 1 H NMR and UV-vis spectra. These complexes are screened as catalysts for acceptorless dehydrogenative coupling (ADC) of primary alcohols and aromatic diamines for the synthesis of benzimidazole and quinoline derivatives with the release of H2 and H2 O as byproducts. The protic complex Mn(L1 )(CO)3 Br shows the highest catalytic activity for the synthesis of 2-substituted benzimidazole derivatives with broad substrate scope, whereas a related complex [Mn(L3 )(CO)3 Br], which is devoid of the proton responsive β-NH unit, shows significantly reduced catalytic efficiency validating the crucial role of the β-NH functionality for the alcohol dehydrogenation reactions. Control experiments, kinetic and deuterated studies, and density functional theory (DFT) calculations reveal a synchronous hydride-proton transfer by the metal-ligand construct in the alcohol dehydrogenation step.
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Affiliation(s)
- Subhabrata De
- Department of Chemistry and, Center for Environmental Sciences and Engineering, Indian Institute of Technology Kanpur, Kanpur, 208016, India
| | - Prabodh Ranjan
- Department of Chemistry and, Center for Environmental Sciences and Engineering, Indian Institute of Technology Kanpur, Kanpur, 208016, India
| | - Vishal Chaurasia
- Department of Chemistry and, Center for Environmental Sciences and Engineering, Indian Institute of Technology Kanpur, Kanpur, 208016, India
| | - Sourav Pal
- Department of Chemistry and, Center for Environmental Sciences and Engineering, Indian Institute of Technology Kanpur, Kanpur, 208016, India
| | - Saikat Pal
- Department of Chemistry and, Center for Environmental Sciences and Engineering, Indian Institute of Technology Kanpur, Kanpur, 208016, India
| | - Pragati Pandey
- Department of Chemistry and, Center for Environmental Sciences and Engineering, Indian Institute of Technology Kanpur, Kanpur, 208016, India
| | - Jitendra K Bera
- Department of Chemistry and, Center for Environmental Sciences and Engineering, Indian Institute of Technology Kanpur, Kanpur, 208016, India
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11
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Tang J, He J, Zhao SY, Liu W. Manganese-Catalyzed Chemoselective Coupling of Secondary Alcohols, Primary Alcohols and Methanol. Angew Chem Int Ed Engl 2023; 62:e202215882. [PMID: 36847452 DOI: 10.1002/anie.202215882] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 02/22/2023] [Accepted: 02/27/2023] [Indexed: 03/01/2023]
Abstract
Herein, we report a manganese-catalyzed three-component coupling of secondary alcohols, primary alcohols and methanol for the synthesis of β,β-methylated/alkylated secondary alcohols. Using our method, a series of 1-arylethanol, benzyl alcohol derivatives, and methanol undergo sequential coupling efficiently to construct assembled alcohols with high chemoselectivity in moderate to good yields. Mechanistic studies suggest that the reaction proceeds via methylation of a benzylated secondary alcohol intermediate to generate the final product.
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Affiliation(s)
- Jun Tang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Key Lab of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry and Chemical Engineering, Donghua University, Shanghai, 201620, China
| | - Jingxi He
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Key Lab of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry and Chemical Engineering, Donghua University, Shanghai, 201620, China
| | - Sheng-Yin Zhao
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Key Lab of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry and Chemical Engineering, Donghua University, Shanghai, 201620, China
| | - Weiping Liu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Key Lab of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry and Chemical Engineering, Donghua University, Shanghai, 201620, China
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12
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Zeng G, Wu J, Shen L, Zheng Q, Chen ZN, Xu X, Tu T. Modular Access to Quaternary α-Hydroxyl Acetates by Catalytic Cross-Coupling of Alcohols. ACS Catal 2023. [DOI: 10.1021/acscatal.2c05820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Guangkuo Zeng
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, China
| | - Jiajie Wu
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, China
| | - Lingyun Shen
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, China
| | - Qingshu Zheng
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, China
| | - Zhe-Ning Chen
- Collaborative Innovation Center of Chemistry for Energy Materials, MOE Laboratory for Computational Physical Science, Fudan University, 2005 Songhu Road, Shanghai 200438, China
| | - Xin Xu
- Collaborative Innovation Center of Chemistry for Energy Materials, MOE Laboratory for Computational Physical Science, Fudan University, 2005 Songhu Road, Shanghai 200438, China
| | - Tao Tu
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
- Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
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13
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Jana A, Chakraborty S, Sarkar K, Maji B. Ruthenium-Catalyzed Reductive Coupling of Epoxides with Primary Alcohols via Hydrogen Transfer Catalysis. J Org Chem 2023; 88:310-318. [PMID: 36546672 DOI: 10.1021/acs.joc.2c02354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Herein, we report the ruthenium-catalyzed synthesis of β-alkylated secondary alcohols via the regioselective ring-opening of epoxides with feedstock primary alcohols. The reaction utilized alcohol as the carbon source and the terminal reductant. Kinetic and labeling experiments elucidate the hydrogen transfer catalysis that operates via tandem Markovnikov selective transfer hydrogenation of terminal epoxides and hydrogen transfer-mediated cross-coupling of the resulting alcohol with primary alcohol substrates. A broad scope (40 examples including drugs/natural product derivatives) and excellent regioselectivity for a variety of substrates were shown.
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Affiliation(s)
- Akash Jana
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, India
| | - Sayandip Chakraborty
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, India
| | - Koushik Sarkar
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, India
| | - Biplab Maji
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, India
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14
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Sheetal, Mehara P, Das P. Methanol as a greener C1 synthon under non-noble transition metal-catalyzed conditions. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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15
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Thenarukandiyil R, Kamte R, Garhwal S, Effnert P, Fridman N, de Ruiter G. α-Methylation of Ketones and Indoles Catalyzed by a Manganese(I) PC NHCP Pincer Complex with Methanol as a C 1 Source. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Ranjeesh Thenarukandiyil
- Schulich Faculty of Chemistry, Technion − Israel Institute of Technology, Technion City, Haifa 3200008, Israel
| | - Rohit Kamte
- Schulich Faculty of Chemistry, Technion − Israel Institute of Technology, Technion City, Haifa 3200008, Israel
| | - Subhash Garhwal
- Schulich Faculty of Chemistry, Technion − Israel Institute of Technology, Technion City, Haifa 3200008, Israel
| | - Philipp Effnert
- Department of Organic Chemistry, Westfälische Wilhelms-Universität Münster, Busso-Peus-Str. 10, Münster 48149, Germany
| | - Natalia Fridman
- Schulich Faculty of Chemistry, Technion − Israel Institute of Technology, Technion City, Haifa 3200008, Israel
| | - Graham de Ruiter
- Schulich Faculty of Chemistry, Technion − Israel Institute of Technology, Technion City, Haifa 3200008, Israel
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16
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Sau A, Panja D, Dey S, Kundu R, Kundu S. Selective reductive α-methylation of chalcone derivatives using methanol. J Catal 2022. [DOI: 10.1016/j.jcat.2022.08.035] [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]
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17
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Ganguli K, Mandal A, Kundu S. Well-Defined Bis(NHC)Mn(I) Complex Catalyzed Tandem Transformation of α,β-Unsaturated Ketones to α-Methylated Ketones Using Methanol. ACS Catal 2022. [DOI: 10.1021/acscatal.2c04131] [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)
- Kasturi Ganguli
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur208016, India
| | - Adarsha Mandal
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur208016, India
| | - Sabuj Kundu
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur208016, India
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18
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Jafarzadeh M, Sobhani SH, Gajewski K, Kianmehr E. Recent advances in C/ N-alkylation with alcohols through hydride transfer strategies. Org Biomol Chem 2022; 20:7713-7745. [PMID: 36169049 DOI: 10.1039/d2ob00706a] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review highlights the most recent reports in three powerful and ever-growing fields of borrowing hydrogen, acceptorless dehydrogenative coupling, and base-mediated hydride transfer strategies; which pave the way for generating reactive intermediates via shuttling hydrogen (or hydride) between starting materials without any need for an external hydrogen source to easily construct more complex structures. There is a thorough focus on diversifying the utility of alcohols for C/N-alkylation leading to the synthesis of branched ketones, alcohols, amines, indols, and 6-membered nitrogen-containing heterocycles such as pyridines and pyrimidines, various transformations with the focus on C-C and C-N bond-forming reactions via metal-based catalysis or metal-free approaches in this context to give a global overview in this area.
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Affiliation(s)
- Mahdi Jafarzadeh
- School of Chemistry, College of Science, University of Tehran, Tehran 1417614411, Iran.
| | - Seyed Hasan Sobhani
- School of Chemistry, College of Science, University of Tehran, Tehran 1417614411, Iran.
| | | | - Ebrahim Kianmehr
- School of Chemistry, College of Science, University of Tehran, Tehran 1417614411, Iran.
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19
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Emayavaramban B, Chakraborty P, Dahiya P, Sundararaju B. Iron-Catalyzed α-Methylation of Ketones Using Methanol as the C1 Source under Photoirradiation. Org Lett 2022; 24:6219-6223. [PMID: 35960264 DOI: 10.1021/acs.orglett.2c02545] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A mild, environmentally benign approach for α-methylation of ketones utilizing methanol as the C1 source under visible light has been developed. The reaction conditions were favorable for a wide range of ketones with both aromatic and aliphatic backbones, allowing for good-to-excellent yields of the respective products. The tentative mechanism is postulated after preliminary mechanistic and kinetic experiments.
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Affiliation(s)
| | - Priyanka Chakraborty
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Pardeep Dahiya
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Basker Sundararaju
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
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20
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Guo J, Tang J, Xi H, Zhao SY, Liu W. Manganese catalyzed urea and polyurea synthesis using methanol as C1 source. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.08.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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21
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Samsonowicz-Górski J, Brodzka A, Ostaszewski R, Koszelewski D. Intensification of Double Kinetic Resolution of Chiral Amines and Alcohols via Chemoselective Formation of a Carbonate-Enzyme Intermediate. Molecules 2022; 27:molecules27144346. [PMID: 35889218 PMCID: PMC9319036 DOI: 10.3390/molecules27144346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 06/30/2022] [Accepted: 07/05/2022] [Indexed: 11/16/2022] Open
Abstract
Chiral amines and alcohols are synthons of numerous pharmaceutically-relevant compounds. The previously developed enzymatic kinetic resolution approaches utilize a chiral racemic molecule and achiral acyl donor (or acyl acceptor). Thus, only one enantiodivergent step of the catalytic cycle is engaged, which does not fully exploit the enzyme’s abilities. The first carbonate-mediated example of simultaneous double chemoselective kinetic resolution of chiral amines and alcohols is described. Herein, we established a biocatalytic approach towards four optically-pure compounds (>99% ee, Enantioselectivity: E > 200) via double enzymatic kinetic resolution, engaging chiral organic carbonates as acyl donors. High enantioselectivity was ensured by extraordinary chemoselectivity in lipase-catalyzed formation of unsymmetrical organic carbonates and engaged in a process applicable for the synthesis of enantiopure organic precursors of valuable compounds. This study focused not only on preparative synthesis, but additionally the catalytic mechanism was discussed and the clear impact of this rarely observed carbonate-derived acyl enzyme was shown. The presented protocol is characterized by atom efficiency, acyl donor sustainability, easy acyl group removal, mild reaction conditions, and biocatalyst recyclability, which significantly decreases the cost of the reported process.
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22
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Owen AE, Preiss A, McLuskie A, Gao C, Peters G, Bühl M, Kumar A. Manganese-Catalyzed Dehydrogenative Synthesis of Urea Derivatives and Polyureas. ACS Catal 2022. [DOI: 10.1021/acscatal.2c00850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Annika Preiss
- School of Chemistry, University of St. Andrews, North Haugh, St. Andrews KY169ST, U.K
| | - Angus McLuskie
- School of Chemistry, University of St. Andrews, North Haugh, St. Andrews KY169ST, U.K
| | - Chang Gao
- School of Chemistry, University of St. Andrews, North Haugh, St. Andrews KY169ST, U.K
| | - Gavin Peters
- School of Chemistry, University of St. Andrews, North Haugh, St. Andrews KY169ST, U.K
| | - Michael Bühl
- School of Chemistry, University of St. Andrews, North Haugh, St. Andrews KY169ST, U.K
| | - Amit Kumar
- School of Chemistry, University of St. Andrews, North Haugh, St. Andrews KY169ST, U.K
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23
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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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24
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Das K, Waiba S, Jana A, Maji B. Manganese-catalyzed hydrogenation, dehydrogenation, and hydroelementation reactions. Chem Soc Rev 2022; 51:4386-4464. [PMID: 35583150 DOI: 10.1039/d2cs00093h] [Citation(s) in RCA: 53] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The emerging field of organometallic catalysis has shifted towards research on Earth-abundant transition metals due to their ready availability, economic advantage, and novel properties. In this case, manganese, the third most abundant transition-metal in the Earth's crust, has emerged as one of the leading competitors. Accordingly, a large number of molecularly-defined Mn-complexes has been synthesized and employed for hydrogenation, dehydrogenation, and hydroelementation reactions. In this regard, catalyst design is based on three pillars, namely, metal-ligand bifunctionality, ligand hemilability, and redox activity. Indeed, the developed catalysts not only differ in the number of chelating atoms they possess but also their working principles, thereby leading to different turnover numbers for product molecules. Hence, the critical assessment of molecularly defined manganese catalysts in terms of chelating atoms, reaction conditions, mechanistic pathway, and product turnover number is significant. Herein, we analyze manganese complexes for their catalytic activity, versatility to allow multiple transformations and their routes to convert substrates to target molecules. This article will also be helpful to get significant insight into ligand design, thereby aiding catalysis design.
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Affiliation(s)
- Kuhali Das
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, India.
| | - Satyadeep Waiba
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, India.
| | - Akash Jana
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, India.
| | - Biplab Maji
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, India.
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25
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Patra K, Laskar RA, Nath A, Bera JK. A Protic Mn(I) Complex Based on a Naphthyridine- N-oxide Scaffold: Protonation/Deprotonation Studies and Catalytic Applications for Alkylation of Ketones. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00085] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Kamaless Patra
- Department of Chemistry and Centre for Environmental Science and Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Roshayed Ali Laskar
- Department of Chemistry and Centre for Environmental Science and Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Anubhav Nath
- Department of Chemistry and Centre for Environmental Science and Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Jitendra K. Bera
- Department of Chemistry and Centre for Environmental Science and Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India
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26
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Song A, Liu S, Wang M, Lu Y, Wang R, Xing LB. Iridium-catalyzed synthesis of β-methylated secondary alcohols using methanol. J Catal 2022. [DOI: 10.1016/j.jcat.2022.01.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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27
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Shao Z, Yuan S, Li Y, Liu Q. Using Methanol as a Formaldehyde Surrogate for Sustainable Synthesis of
N
‐Heterocycles
via
Manganese‐Catalyzed
Dehydrogenative Cyclization. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202100886] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Zhihui Shao
- Center of Basic Molecular Science (CBMS), Department of Chemistry Tsinghua University Beijing 100084 China
- Flavors and Fragrance Engineering & Technology Research Center of Henan Province, College of Tobacco Science Henan Agricultural University Zhengzhou 450002 China
| | - Shanshan Yuan
- Center of Basic Molecular Science (CBMS), Department of Chemistry Tsinghua University Beijing 100084 China
| | - Yibiao Li
- School of Biotechnology and Health Sciences Wuyi University Jiangmen Guangdong Province 529090 China
| | - Qiang Liu
- Center of Basic Molecular Science (CBMS), Department of Chemistry Tsinghua University Beijing 100084 China
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28
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Construction of a (NNN)Ru-Incorporated Porous Organic Polymer with High Catalytic Activity for β-Alkylation of Secondary Alcohols with Primary Alcohols. Polymers (Basel) 2022; 14:polym14020231. [PMID: 35054638 PMCID: PMC8780954 DOI: 10.3390/polym14020231] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 12/29/2021] [Accepted: 01/04/2022] [Indexed: 12/12/2022] Open
Abstract
Solid supports functionalized with molecular metal catalysts combine many of the advantages of heterogeneous and homogeneous catalysis. A (NNN)Ru-incorporated porous organic polymer (POP-bp/bbpRuCl3) exhibited high catalytic efficiency and broad functional group tolerance in the C–C cross-coupling of secondary and primary alcohols to give β-alkylated secondary alcohols. This catalyst demonstrated excellent durability during successive recycling without leaching of Ru which is ascribed to the strong binding of the pincer ligands to the metal ions.
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29
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Paterova I, Reitmaierova L, Cerveny L. Rosaphen synthesis: homogeneously catalyzed aldol condensation of cinnamaldehyde or hydrocinnamaldehyde with propanal followed by hydrogenation over ruthenium and nickel supported catalysts. REACTION KINETICS MECHANISMS AND CATALYSIS 2022. [DOI: 10.1007/s11144-021-02123-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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30
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Ganguli K, Belkova N, Kundu S. Cyclometalated (NNC)Ru(II) complex catalyzed β-methylation of alcohols using methanol. Dalton Trans 2022; 51:4354-4365. [DOI: 10.1039/d1dt03967a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Indolyl fragment containing phenanthroline based new ligands and their corresponding Ru(II) complexes were synthesized and fully characterized by various spectroscopic techniques. Catalytic activity of these newly synthesized cyclometalated (NNC)Ru(II) complexes...
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31
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Kaithal A, Chatterjee B, Werlé C, Leitner W. Acceptorless Dehydrogenation of Methanol to Carbon Monoxide and Hydrogen using Molecular Catalysts. Angew Chem Int Ed Engl 2021; 60:26500-26505. [PMID: 34596302 PMCID: PMC9299216 DOI: 10.1002/anie.202110910] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 09/23/2021] [Indexed: 12/16/2022]
Abstract
The acceptorless dehydrogenation of methanol to carbon monoxide and hydrogen was investigated using homogeneous molecular complexes. Complexes of ruthenium and manganese comprising the MACHO ligand framework showed promising activities for this reaction. The molecular ruthenium complex [RuH(CO)(BH4 )(HN(C2 H4 PPh2 )2 )] (Ru-MACHO-BH) achieved up to 3150 turnovers for carbon monoxide and 9230 turnovers for hydrogen formation at 150 °C reaching pressures up to 12 bar when the decomposition was carried out in a closed vessel. Control experiments affirmed that the metal complex mediates the initial fast dehydrogenation of methanol to formaldehyde and methyl formate followed by subsequent slow decarbonylation. Depending on the catalyst and reaction conditions, the CO/H2 ratio in the gas mixture thus varies over a broad range from almost pure hydrogen to the stoichiometric limit of 1:2.
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Affiliation(s)
- Akash Kaithal
- Max Planck Institute for Chemical Energy ConversionStiftstraße 34–3645470Mülheim a.d. RuhrGermany
| | - Basujit Chatterjee
- Max Planck Institute for Chemical Energy ConversionStiftstraße 34–3645470Mülheim a.d. RuhrGermany
| | - Christophe Werlé
- Max Planck Institute for Chemical Energy ConversionStiftstraße 34–3645470Mülheim a.d. RuhrGermany
- Ruhr University BochumUniversitätsstr. 15044801BochumGermany
| | - Walter Leitner
- Max Planck Institute for Chemical Energy ConversionStiftstraße 34–3645470Mülheim a.d. RuhrGermany
- Institut für Technische und Makromolekulare ChemieRWTH Aachen UniversityWorringer Weg 252074AachenGermany
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32
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Kaithal A, Chatterjee B, Werlé C, Leitner W. Acceptorless Dehydrogenation of Methanol to Carbon Monoxide and Hydrogen using Molecular Catalysts. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202110910] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Akash Kaithal
- Max Planck Institute for Chemical Energy Conversion Stiftstraße 34–36 45470 Mülheim a.d. Ruhr Germany
| | - Basujit Chatterjee
- Max Planck Institute for Chemical Energy Conversion Stiftstraße 34–36 45470 Mülheim a.d. Ruhr Germany
| | - Christophe Werlé
- Max Planck Institute for Chemical Energy Conversion Stiftstraße 34–36 45470 Mülheim a.d. Ruhr Germany
- Ruhr University Bochum Universitätsstr. 150 44801 Bochum Germany
| | - Walter Leitner
- Max Planck Institute for Chemical Energy Conversion Stiftstraße 34–36 45470 Mülheim a.d. Ruhr Germany
- Institut für Technische und Makromolekulare Chemie RWTH Aachen University Worringer Weg 2 52074 Aachen Germany
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33
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Biswal P, Samser S, Meher SK, Chandrasekhar V, Venkatasubbaiah K. Palladium‐Catalyzed Synthesis of α‐Methyl Ketones from Allylic Alcohols and Methanol. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202101101] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Priyabrata Biswal
- 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
| | - Sushanta Kumar Meher
- School of Chemical Sciences National Institute of Science Education and Research (NISER) Bhubaneswar, HBNI Bhubaneswar 752050 Odisha India
| | - Vadapalli Chandrasekhar
- Tata Institute of Fundamental Research Hyderabad Gopanpally Hyderabad 500 046 India
- Department of Chemistry Indian Institute of Technology Kanpur Kanpur 208016 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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34
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Liu J, Li W, Li Y, Liu Y, Ke Z. Selective C-alkylation Between Alcohols Catalyzed by N-Heterocyclic Carbene Molybdenum. Chem Asian J 2021; 16:3124-3128. [PMID: 34529352 DOI: 10.1002/asia.202100959] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Indexed: 01/26/2023]
Abstract
The first implementation of a molybdenum complex with an easily accessible bis-N-heterocyclic carbene ligand to catalyze β-alkylation of secondary alcohols via borrowing-hydrogen (BH) strategy using alcohols as alkylating agents is reported. Remarkably high activity, excellent selectivity, and broad substrate scope compatibility with advantages of catalyst usage low to 0.5 mol%, a catalytic amount of NaOH as the base, and H2 O as the by-product are demonstrated in this green and step-economical protocol. Mechanistic studies indicate a plausible outer-sphere mechanism in which the alcohol dehydrogenation is the rate-determining step.
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Affiliation(s)
- Jiahao Liu
- School of Materials Science and Engineering, PCFM Lab, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Weikang Li
- School of Materials Science and Engineering, PCFM Lab, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Yinwu Li
- School of Materials Science and Engineering, PCFM Lab, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, 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 and Engineering, PCFM Lab, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, P. R. China
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35
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Sarki N, Goyal V, Natte K, Jagadeesh RV. Base Metal‐Catalyzed C‐Methylation Reactions Using Methanol. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100762] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Naina Sarki
- Chemical and Material Science Division CSIR – Indian Institute of Petroleum Haridwar road, Mohkampur Dehradun 248005 India
| | - Vishakha Goyal
- Chemical and Material Science Division CSIR – Indian Institute of Petroleum Haridwar road, Mohkampur Dehradun 248005 India
| | - Kishore Natte
- Chemical and Material Science Division CSIR – Indian Institute of Petroleum Haridwar road, Mohkampur Dehradun 248005 India
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36
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Base metal catalyzed (De)hydrogenative formylation and methylation reactions utilizing carbon dioxide and methanol as C1 sources. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153362] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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37
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Steverlynck J, Sitdikov R, Rueping M. The Deuterated "Magic Methyl" Group: A Guide to Site-Selective Trideuteromethyl Incorporation and Labeling by Using CD 3 Reagents. Chemistry 2021; 27:11751-11772. [PMID: 34076925 PMCID: PMC8457246 DOI: 10.1002/chem.202101179] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Indexed: 12/12/2022]
Abstract
In the field of medicinal chemistry, the precise installation of a trideuteromethyl group is gaining ever-increasing attention. Site-selective incorporation of the deuterated "magic methyl" group can provide profound pharmacological benefits and can be considered an important tool for drug optimization and development. This review provides a structured overview, according to trideuteromethylation reagent, of currently established methods for site-selective trideuteromethylation of carbon atoms. In addition to CD3 , the selective introduction of CD2 H and CDH2 groups is also considered. For all methods, the corresponding mechanism and scope are discussed whenever reported. As such, this review can be a starting point for synthetic chemists to further advance trideuteromethylation methodologies. At the same time, this review aims to be a guide for medicinal chemists, offering them the available C-CD3 formation strategies for the preparation of new or modified drugs.
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Affiliation(s)
- Joost Steverlynck
- Kaust Catalysis Center (KCC)King Abdullah University Science and Technology (KAUST)Thuwal23955-6900Saudi Arabia
| | - Ruzal Sitdikov
- Kaust Catalysis Center (KCC)King Abdullah University Science and Technology (KAUST)Thuwal23955-6900Saudi Arabia
| | - Magnus Rueping
- Kaust Catalysis Center (KCC)King Abdullah University Science and Technology (KAUST)Thuwal23955-6900Saudi Arabia
- Institute for Experimental Molecular ImagingRWTH Aachen UniversityForckenbeckstrasse 5552074Aachen
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Das K, Barman MK, Maji B. Advancements in multifunctional manganese complexes for catalytic hydrogen transfer reactions. Chem Commun (Camb) 2021; 57:8534-8549. [PMID: 34369488 DOI: 10.1039/d1cc02512k] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Catalytic hydrogen transfer reactions have enormous academic and industrial applications for the production of diverse molecular scaffolds. Over the past few decades, precious late transition-metal catalysts were employed for these reactions. The early transition metals have recently gained much attention due to their lower cost, less toxicity, and overall sustainability. In this regard, manganese, which is the third most abundant transition metal in the Earth's crust, has emerged as a viable alternative. However, the key to the success of such manganese-based complexes lies in the multifunctional ligand design and choice of appropriate ancillary ligands, which helps them mimic and, even in some cases, supersede noble metals' activities. The metal-ligand bifunctionality, achieved via deprotonation of the acidic C-H or N-H bonds, is one of the powerful strategies employed for this purpose. Alongside, the ligand hemilability in which a weakly chelating group tunes in between the coordinated and uncoordinated stages could effectively stabilize the reactive intermediates, thereby facilitating substrate activation and catalysis. Redox non-innocent ligands acting as an electron sink, thereby helping the metal center in steps gaining or losing electrons, and non-classical metal-ligand cooperativity has also played a significant role in the ligand design for manganese catalysis. The strategies were not only employed for the chemoselective hydrogenation of different reducible functionalities but also for the C-X (X = C/N) coupling reactions via HT and downstream cascade processes. This article features multifunctional ligand-based manganese complexes, highlighting the importance of ligand design and choice of ancillary ligands for achieving the desired catalytic activity and selectivity for HT reactions. We have also discussed the detailed reaction pathways for metal complexes involving bifunctionality, hemilability, redox activity, and indirect metal-ligand cooperativity. The synthetic utilization of those complexes in different organic transformations has also been detailed.
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Affiliation(s)
- Kuhali Das
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, India.
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39
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Biswas N, Srimani D. Ru-Catalyzed Selective Catalytic Methylation and Methylenation Reaction Employing Methanol as the C1 Source. J Org Chem 2021; 86:10544-10554. [PMID: 34263597 DOI: 10.1021/acs.joc.1c01185] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Methanol can be employed as a green and sustainable methylating agent to form C-C and C-N bonds via borrowing hydrogen (BH) methodology. Herein we explored the activity of the acridine-derived SNS-Ru pincer for the activation of methanol to apply it as a C1 building block in different reactions. Our catalytic system shows great success toward the β-C(sp3)-methylation reaction of 2-phenylethanols to provide good to excellent yields of the methylated products. We investigated the mechanistic details, kinetic progress, and temperature-dependent product distribution, which revealed the slow and steady generation of in situ formed aldehyde, is the key factor to get the higher yield of the β-methylated product. To establish the environmental benefit of this reaction, green chemistry metrics are calculated. Furthermore, dimerization of 2-naphthol via methylene linkage and formation of N-methylation of amine are also described in this study, which offers a wide range of substrate scope with a good to excellent yield.
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Affiliation(s)
- Nandita Biswas
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam 781039, India
| | - Dipankar Srimani
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam 781039, India
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40
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Kaur M, U Din Reshi N, Patra K, Bhattacherya A, Kunnikuruvan S, Bera JK. A Proton-Responsive Pyridyl(benzamide)-Functionalized NHC Ligand on Ir Complex for Alkylation of Ketones and Secondary Alcohols. Chemistry 2021; 27:10737-10748. [PMID: 33998720 DOI: 10.1002/chem.202101360] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Indexed: 12/22/2022]
Abstract
A Cp*Ir(III) complex (1) of a newly designed ligand L1 featuring a proton-responsive pyridyl(benzamide) appended on N-heterocyclic carbene (NHC) has been synthesized. The molecular structure of 1 reveals a dearomatized form of the ligand. The protonation of 1 with HBF4 in tetrahydrofuran gives the corresponding aromatized complex [Cp*Ir(L1 H)Cl]BF4 (2). Both compounds are characterized spectroscopically and by X-ray crystallography. The protonation of 1 with acid is examined by 1 H NMR and UV-vis spectra. The proton-responsive character of 1 is exploited for catalyzing α-alkylation of ketones and β-alkylation of secondary alcohols using primary alcohols as alkylating agents through hydrogen-borrowing methodology. Compound 1 is an effective catalyst for these reactions and exhibits a superior activity in comparison to a structurally similar iridium complex [Cp*Ir(L2 )Cl]PF6 (3) lacking a proton-responsive pendant amide moiety. The catalytic alkylation is characterized by a wide substrate scope, low catalyst and base loadings, and a short reaction time. The catalytic efficacy of 1 is also demonstrated for the syntheses of quinoline and lactone derivatives via acceptorless dehydrogenation, and selective alkylation of two steroids, pregnenolone and testosterone. Detailed mechanistic investigations and DFT calculations substantiate the role of the proton-responsive ligand in the hydrogen-borrowing process.
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Affiliation(s)
- Mandeep Kaur
- Department of Chemistry and Center for Environmental Sciences and Engineering, Indian Institute of Technology Kanpur, Kanpur, 208016, India
| | - Noor U Din Reshi
- Department of Chemistry and Center for Environmental Sciences and Engineering, Indian Institute of Technology Kanpur, Kanpur, 208016, India
| | - Kamaless Patra
- Department of Chemistry and Center for Environmental Sciences and Engineering, Indian Institute of Technology Kanpur, Kanpur, 208016, India
| | - Arindom Bhattacherya
- Department of Chemistry and Center for Environmental Sciences and Engineering, Indian Institute of Technology Kanpur, Kanpur, 208016, India
| | - Sooraj Kunnikuruvan
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Vithura, Thiruvananthapuram, 695551, India
| | - Jitendra K Bera
- Department of Chemistry and Center for Environmental Sciences and Engineering, Indian Institute of Technology Kanpur, Kanpur, 208016, India
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41
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Pandia BK, Gunanathan C. Manganese(I) Catalyzed α-Alkenylation of Amides Using Alcohols with Liberation of Hydrogen and Water. J Org Chem 2021; 86:9994-10005. [PMID: 34254806 DOI: 10.1021/acs.joc.1c00685] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Herein, unprecedented manganese-catalyzed direct α-alkenylation of amides using alcohols is reported. Aryl amides are reacted with diverse primary alcohols, which provided the α,β-unsaturated amides in moderate to good yields with excellent selectivity. Mechanistic studies indicate that Mn(I) catalyst oxidizes the alcohols to their corresponding aldehydes and also plays an important role in efficient C═C bond formation through aldol condensation. This selective olefination is facilitated by metal-ligand cooperation by the aromatization-dearomatization process operating in the catalytic system. Biorenewable alcohols are used as alkenylation reagents for the challenging α-alkenylation of amides with the highly abundant base metal manganese as a catalyst, which results in water and dihydrogen as the only byproduct, making this catalytic transformation attractive, sustainable, and environmentally benign.
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Affiliation(s)
- Biplab Keshari Pandia
- School of Chemical Sciences, National Institute of Science Education and Research, Homi Bhabha National Institute, Bhubaneswar-752050, India
| | - Chidambaram Gunanathan
- School of Chemical Sciences, National Institute of Science Education and Research, Homi Bhabha National Institute, Bhubaneswar-752050, India
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42
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Nakayama T, Hikawa H, Kikkawa S, Azumaya I. Water-promoted dehydrative coupling of 2-aminopyridines in heptane via a borrowing hydrogen strategy. RSC Adv 2021; 11:23144-23150. [PMID: 35480450 PMCID: PMC9034306 DOI: 10.1039/d1ra04118e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 06/23/2021] [Indexed: 11/23/2022] Open
Abstract
A synthetic method for dehydrative N-benzylation promoted by water molecules in heptane using a π-benzylpalladium system has been developed. The presence of water significantly accelerates carbon–nitrogen bond formation, which is accomplished in an atom-economical process to afford the corresponding N-monobenzylated products. A crossover experiment afforded H/D scrambled products, which is consistent with a borrowing hydrogen mechanism. Kinetic isotope effect measurements revealed that benzylic carbon–hydrogen bond cleavage was the rate-determining step. We describe a novel strategy for the water-promoted dehydrative coupling reaction in heptane, which offers a sustainable direct amination of alcohols.![]()
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Affiliation(s)
- Taku Nakayama
- Faculty of Pharmaceutical Sciences, Toho University 2-2-1 Miyama, Funabashi Chiba 274-8510 Japan
| | - Hidemasa Hikawa
- Faculty of Pharmaceutical Sciences, Toho University 2-2-1 Miyama, Funabashi Chiba 274-8510 Japan
| | - Shoko Kikkawa
- Faculty of Pharmaceutical Sciences, Toho University 2-2-1 Miyama, Funabashi Chiba 274-8510 Japan
| | - Isao Azumaya
- Faculty of Pharmaceutical Sciences, Toho University 2-2-1 Miyama, Funabashi Chiba 274-8510 Japan
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43
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Lu Z, Zheng Q, Zeng G, Kuang Y, Clark JH, Tu T. Highly efficient NHC-iridium-catalyzed β-methylation of alcohols with methanol at low catalyst loadings. Sci China Chem 2021. [DOI: 10.1007/s11426-021-1017-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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44
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Nad P, Mukherjee A. Acceptorless Dehydrogenative Coupling Reactions by Manganese Pincer Complexes. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100249] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Pinaki Nad
- Department of Chemistry Indian Institute of Technology Bhilai GEC Campus Sejbahar Raipur, Chhattisgarh 492015 India
| | - Arup Mukherjee
- Department of Chemistry Indian Institute of Technology Bhilai GEC Campus Sejbahar Raipur, Chhattisgarh 492015 India
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45
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Biswal P, Samser S, Nayak P, Chandrasekhar V, Venkatasubbaiah K. Cobalt(II)porphyrin-Mediated Selective Synthesis of 1,5-Diketones via an Interrupted-Borrowing Hydrogen Strategy Using Methanol as a C1 Source. J Org Chem 2021; 86:6744-6754. [PMID: 33902283 DOI: 10.1021/acs.joc.1c00476] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
A novel cobalt(II)porphyrin-mediated acceptorless dehydrogenation of methanol is reported for the first time. This methodology has been applied for the coupling of a variety of ketones with methanol to produce 1,5-diketones along with H2 and H2O as the environment friendly byproducts. This paradigm was also demonstrated for a one-pot synthesis of substituted pyridines using a sequential addition protocol where the 1,5-diketones were generated in situ. From many experiments including those involving deuterium labeling, it is proposed that protonated cobalt(II)porphyrin methoxide complex acts as an intermediate to generate formaldehyde along with a metal hydride.
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Affiliation(s)
- Priyabrata Biswal
- 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
| | - Prakash Nayak
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Bhubaneswar, HBNI, Bhubaneswar-752050, Odisha, India
| | - Vadapalli Chandrasekhar
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad-500046, Telangana, India.,Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, Uttar Pradesh, 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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46
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Babu R, Subaramanian M, Midya SP, Balaraman E. Nickel-Catalyzed Guerbet Type Reaction: C-Alkylation of Secondary Alcohols via Double (de)Hydrogenation. Org Lett 2021; 23:3320-3325. [PMID: 33881325 DOI: 10.1021/acs.orglett.1c00782] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Acceptorless double dehydrogenative cross-coupling of secondary and primary alcohols under nickel catalysis is reported. This Guerbet type reaction provides an atom- and a step-economical method for the C-alkylation of secondary alcohols under mild, benign conditions. A broad range of substrates including aromatic, cyclic, acyclic, and aliphatic alcohols was well tolerated. Interestingly, the C-alkylation of cholesterol derivatives and the double C-alkylation of cyclopentanol with various alcohols were also demonstrated.
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Affiliation(s)
- Reshma Babu
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati 517507, India
| | - Murugan Subaramanian
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati 517507, India
| | - Siba P Midya
- 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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48
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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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49
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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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50
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Sarki N, Goyal V, Tyagi NK, Puttaswamy, Narani A, Ray A, Natte K. Simple RuCl
3
‐catalyzed
N
‐Methylation of Amines and Transfer Hydrogenation of Nitroarenes using Methanol. ChemCatChem 2021. [DOI: 10.1002/cctc.202001937] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Naina Sarki
- Chemical and Material Sciences Division CSIR-Indian Institute of Petroleum Haridwar road Mohkampur Dehradun 248 005 India
- Academy of Scientific and Innovative Research (AcSIR) CSIR-HRDC Campus Joggers Road, Kamla Nehru Nagar Ghaziabad Uttar Pradesh 201 002 India
| | - Vishakha Goyal
- Chemical and Material Sciences Division CSIR-Indian Institute of Petroleum Haridwar road Mohkampur Dehradun 248 005 India
- Academy of Scientific and Innovative Research (AcSIR) CSIR-HRDC Campus Joggers Road, Kamla Nehru Nagar Ghaziabad Uttar Pradesh 201 002 India
| | - Nitin Kumar Tyagi
- Chemical and Material Sciences Division CSIR-Indian Institute of Petroleum Haridwar road Mohkampur Dehradun 248 005 India
| | - Puttaswamy
- Department of Chemistry Bangalore University Jnana Bharathi Campus Bangalore 560056 India
| | - Anand Narani
- Chemical and Material Sciences Division CSIR-Indian Institute of Petroleum Haridwar road Mohkampur Dehradun 248 005 India
- BioFuels Division CSIR-Indian Institute of Petroleum (CSIR-IIP) Haridwar Road Mohkampur Dehradun 248 005 India
| | - Anjan Ray
- Chemical and Material Sciences Division CSIR-Indian Institute of Petroleum Haridwar road Mohkampur Dehradun 248 005 India
- Analytical Sciences Division CSIR-Indian Institute of Petroleum (CSIR-IIP) Haridwar Road Mohkampur Dehradun 248 005 India
| | - Kishore Natte
- Chemical and Material Sciences Division CSIR-Indian Institute of Petroleum Haridwar road Mohkampur Dehradun 248 005 India
- Academy of Scientific and Innovative Research (AcSIR) CSIR-HRDC Campus Joggers Road, Kamla Nehru Nagar Ghaziabad Uttar Pradesh 201 002 India
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