1
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Borden O, Joseph BT, Head MC, Ammons OA, Kim DE, Bonino AC, Keith JM, Chianese AR. Highly Enantiomerically Enriched Secondary Alcohols via Epoxide Hydrogenolysis. Organometallics 2024; 43:1490-1501. [PMID: 38993820 PMCID: PMC11234370 DOI: 10.1021/acs.organomet.4c00214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2024] [Revised: 06/04/2024] [Accepted: 06/07/2024] [Indexed: 07/13/2024]
Abstract
In this article, we report the development of ruthenium-catalyzed hydrogenolysis of epoxides to selectively give the branched (Markovnikov) alcohol products. In contrast to previously reported catalysts, the use of Milstein's PNN-pincer-ruthenium complex at room temperature allows the conversion of enantiomerically enriched epoxides to secondary alcohols without racemization of the product. The catalyst is effective for a range of aryl epoxides, alkyl epoxides, and glycidyl ethers and is the first homogeneous system to selectively promote hydrogenolysis of glycidol to 1,2-propanediol, without loss of enantiomeric purity. A detailed mechanistic study was conducted, including experimental observations of catalyst speciation under catalytically relevant conditions, comprehensive kinetic characterization of the catalytic reaction, and computational analysis via density functional theory. Heterolytic hydrogen cleavage is mediated by the ruthenium center and exogenous alkoxide base. Epoxide ring opening occurs through an opposite-side attack of the ruthenium hydride on the less-hindered epoxide carbon, giving the branched alcohol product selectively.
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Affiliation(s)
- Olivia
J. Borden
- Department of Chemistry, Colgate University, 13 Oak Drive, Hamilton, New York 13346, United States
| | - Benjamin T. Joseph
- Department of Chemistry, Colgate University, 13 Oak Drive, Hamilton, New York 13346, United States
| | - Marianna C. Head
- Department of Chemistry, Colgate University, 13 Oak Drive, Hamilton, New York 13346, United States
| | - Obsidian A. Ammons
- Department of Chemistry, Colgate University, 13 Oak Drive, Hamilton, New York 13346, United States
| | - Diane Eun Kim
- Department of Chemistry, Colgate University, 13 Oak Drive, Hamilton, New York 13346, United States
| | - Abigail C. Bonino
- Department of Chemistry, Colgate University, 13 Oak Drive, Hamilton, New York 13346, United States
| | - Jason M. Keith
- Department of Chemistry, Colgate University, 13 Oak Drive, Hamilton, New York 13346, United States
| | - Anthony R. Chianese
- Department of Chemistry, Colgate University, 13 Oak Drive, Hamilton, New York 13346, United States
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2
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Tang Y, Pu M, Lei M. Cyclopentadienone Diphosphine Ruthenium Complex: A Designed Catalyst for the Hydrogenation of Carbon Dioxide to Methanol. J Org Chem 2024; 89:2431-2439. [PMID: 38306607 DOI: 10.1021/acs.joc.3c02438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2024]
Abstract
The development of homogeneous metal catalysts for the efficient hydrogenation of carbon dioxide (CO2) into methanol (CH3OH) remains a significant challenge. In this study, a new cyclopentadienone diphosphine ligand (CPDDP ligand) was designed, which could coordinate with ruthenium to form a Ru-CPDDP complex to efficiently catalyze the CO2-to-methanol process using dihydrogen (H2) as the hydrogen resource based on density functional theory (DFT) mechanistic investigation. This process consists of three catalytic cycles, stage I (the hydrogenation of CO2 to HCOOH), stage II (the hydrogenation of HCOOH to HCHO), and stage III (the hydrogenation of HCHO to CH3OH). The calculated free energy barriers for the hydrogen transfer (HT) steps of stage I, stage II, and stage III are 7.5, 14.5, and 3.5 kcal/mol, respectively. The most favorable pathway of the dihydrogen activation (DA) steps of three stages to regenerate catalytic species is proposed to be the formate-assisted DA step with a free energy barrier of 10.4 kcal/mol. The calculated results indicate that the designed Ru-CPDDP and Ru-CPDDPEt complexes could catalyze hydrogenation of CO2 to CH3OH (HCM) under mild conditions and that the transition-metal owning designed CPDDP ligand framework be one kind of promising potential efficient catalysts for HCM.
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Affiliation(s)
- Yanhui Tang
- State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P.R. China
- School of Materials Design and Engineering, Beijing Institute of Fashion Technology, Beijing 100029, P.R. China
| | - Min Pu
- State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P.R. China
| | - Ming Lei
- State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P.R. China
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3
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Sustainable amidation through acceptorless dehydrogenative coupling by pincer-type catalysts: recent advances. PURE APPL CHEM 2023. [DOI: 10.1515/pac-2022-1101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Abstract
The amide functional group is ubiquitous in living organisms, and is of particular importance in bioactive compounds and pharmaceuticals. Because of the prevalence and significance of the amide bond, considerable efforts have been invested throughout the years in developing new synthetic methodologies for its formation. Nevertheless, amide synthesis still largely relies on variants of the traditional condensation of carboxylic acids and amines, mediated by stoichiometric coupling reagents. This poses a sustainability challenge, since such reactions suffer from unfavorable atom and step economies, involve harmful chemicals and produce chemical waste. Hence, establishing sustainable approaches to amide synthesis is of great importance. Over the last two decades, we have developed homogeneous catalytic reactions for sustainable synthetic transformations, primarily based on transition metal complexes of pincer ligands. A considerable portion of these efforts has been devoted to acceptorless dehydrogenative coupling, including that of alcohols and amines through ruthenium-catalyzed reactions. These latter processes generate amides without resorting to coupling reagents and typically produce no waste, with their only byproduct being H2 gas, which is itself a valuable resource. In the present review, we chronicle our progress in this area of research since 2014. This includes the use of water and ammonia as amidation reagents, expanding the scope of amidation substrates and target amides, achieving milder reaction conditions, development of amidation-based liquid organic hydrogen carrier systems, and introduction of manganese-based catalysts.
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4
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Liu X, Shi F, Jin C, Liu B, Lei M, Tan J. Stereospecific synthesis of monofluoroalkenes and their deuterated analogues via Ag-catalyzed decarboxylation. J Catal 2022. [DOI: 10.1016/j.jcat.2022.08.008] [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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5
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Zhou Y, Zhao Y, Shi X, Tang Y, Yang Z, Pu M, Lei M. A theoretical study on the hydrogenation of CO 2 to methanol catalyzed by ruthenium pincer complexes. Dalton Trans 2022; 51:10020-10028. [PMID: 35703402 DOI: 10.1039/d2dt01352e] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Herein, a density functional theory (DFT) study was performed to investigate thoroughly the cascade reaction mechanism for the hydrogenation of carbon dioxide to methanol catalyzed by ruthenium pincer complex [RuH2(Me2PCH2SiMe2)2NH(CO)]. Three catalytic stages involving the hydrogenation of carbon dioxide (stage I), formic acid (stage II) and formaldehyde (stage III) were studied. The calculated results show that the dominant H2 activation strategy in the hydrogenation of CO2 to methanol may not be the methanol-assisted H2 activation, but the formate-assisted H2 activation. In this cascade reaction, all energy spans of stage I, II and III are 20.2 kcal mol-1 of the formate-assisted H2 activation. This implies that it could occur under mild conditions. Meanwhile, the catalyst is proposed to be efficient for the transfer hydrogenation using isopropanol as the hydrogen resource, and the ruthenium pincer complexes [RuH2(Me2PCH2SiMe2)2NH(CO)], [RuH2(Ph2PCH2SiMe2)2NH(CO)] and [RuH2(Me2PCH2SiMe2)2NH(CO)] exhibit similar catalytic activities for the hydrogenation of CO2 to methanol.
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Affiliation(s)
- Ying Zhou
- State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, China.
| | - Yaqi Zhao
- State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, China.
| | - Xiaofan Shi
- State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, China.
| | - Yanhui Tang
- State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, China. .,School of Materials Design and Engineering, Beijing Institute of Fashion Technology, Beijing, 100029, China
| | - Zuoyin Yang
- State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, China.
| | - Min Pu
- State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, China.
| | - Ming Lei
- State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, China.
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6
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Zhao Y, Zhang L, Tang Y, Pu M, Lei M. A theoretical study of asymmetric ketone hydrogenation catalyzed by Mn complexes: from the catalytic mechanism to the catalyst design. Phys Chem Chem Phys 2022; 24:13365-13375. [PMID: 35608221 DOI: 10.1039/d2cp00818a] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, a density functional theory (DFT) study was performed to investigate asymmetric ketone hydrogenation (AKH) catalyzed by Mn complexes, from the catalytic mechanism to the catalyst design. The calculated results indicated that the Mn(CO)2-PSiNSiP (A1, PSiNSiP = P(Ph)2Si(CH3)2NSi(CH3)2P(Ph)2) pincer complex has potential high catalytic activity for ketone hydrogenation. The Mn(CO)-LYB (B, LYB = P(Ph)2Si(CH3)2NSi(CH3)2P(Me)2) pincer complex was then designed to catalyze AKH with good stereoselectivity. The hydrogen transfer (HT) step is the chirality-determining step. To avoid the enantiomer of Mn(CO)2-LYB, which could eliminate the high stereoselectivity during AKH, novel Mn complexes with quadridentate ligands, such as Mn(CO)-LYC (C, LYC = P(CH3)2CH2Si(CH3)NSi(CH3)(Si(CH3)CH2P(CH3)2)CH2P(Ph)2) and Mn(CO)-LYD (D, LYD = P(CH3)2CH2Si(CH3)NSi(CH3)(Si(CH3)CH2P(CH3)2)CH2P(Cy)2), were designed to drive AKH with medium stereoselectivity. In order to increase the stereoselectivity of AKH, Mn(CO)-LYE (E, LYE = PH2CH2Si(CH3)NSi(CH3)(Si(CH3)CH2P(CH3)2)CH2P(Ph)2) and Mn(CO)-LYF (F, LYF = PH2CH2Si(CH3)NSi(CH3)(Si(CH3)CH2P(CH3)2)CH2P(Cy)2) were further designed and showed very good stereoselectivity, which is due to the lower deformation energy and stronger interactions between the ketone substrates and catalysts. This work may shed light on the design of cheap metal catalysts with a new ligand framework for the asymmetric hydrogenation (AH) of CX bonds (X = O, N).
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Affiliation(s)
- Yaqi Zhao
- State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, China.
| | - Lin Zhang
- State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, China.
| | - Yanhui Tang
- State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, China. .,School of Materials Design and Engineering, Beijing Institute of Fashion Technology, Beijing, 100029, P. R. China
| | - Min Pu
- State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, China.
| | - Ming Lei
- State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, China.
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7
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Luo J, Zhou QQ, Montag M, Ben-David Y, Milstein D. Acceptorless dehydrogenative synthesis of primary amides from alcohols and ammonia. Chem Sci 2022; 13:3894-3901. [PMID: 35432908 PMCID: PMC8966752 DOI: 10.1039/d1sc07102e] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 02/16/2022] [Indexed: 12/22/2022] Open
Abstract
The highly desirable synthesis of the widely-used primary amides directly from alcohols and ammonia via acceptorless dehydrogenative coupling represents a clean, atom-economical, sustainable process. Nevertheless, such a reaction has not been previously reported, and the existing catalytic systems instead generate other N-containing products, e.g., amines, imines and nitriles. Herein, we demonstrate an efficient and selective ruthenium-catalyzed synthesis of primary amides from alcohols and ammonia gas, accompanied by H2 liberation. Various aliphatic and aromatic primary amides were synthesized in high yields, with no observable N-containing byproducts. The selectivity of this system toward primary amide formation is rationalized through density functional theory (DFT) calculations, which show that dehydrogenation of the hemiaminal intermediate into primary amide is energetically favored over its dehydration into imine.
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Affiliation(s)
- Jie Luo
- Department of Molecular Chemistry and Materials Science, Weizmann Institute of Science Rehovot 76100 Israel
| | - Quan-Quan Zhou
- Department of Molecular Chemistry and Materials Science, Weizmann Institute of Science Rehovot 76100 Israel
| | - Michael Montag
- Department of Molecular Chemistry and Materials Science, Weizmann Institute of Science Rehovot 76100 Israel
| | - Yehoshoa Ben-David
- Department of Molecular Chemistry and Materials Science, Weizmann Institute of Science Rehovot 76100 Israel
| | - David Milstein
- Department of Molecular Chemistry and Materials Science, Weizmann Institute of Science Rehovot 76100 Israel
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8
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Liang Y, Luo J, Milstein D. Facile synthesis of amides via acceptorless dehydrogenative coupling of aryl epoxides and amines. Chem Sci 2022; 13:5913-5919. [PMID: 35685791 PMCID: PMC9132053 DOI: 10.1039/d2sc01959k] [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: 04/05/2022] [Accepted: 04/25/2022] [Indexed: 11/22/2022] Open
Abstract
The synthesis of amides is significant in a wide variety of academic and industrial fields. We report here a new reaction, namely acceptorless dehydrogenative coupling of epoxides and amines to form amides catalyzed by ruthenium pincer complexes. Various aryl epoxides and amines smoothly convert into the desired amides in high yields with the generation of H2 gas as the only byproduct. Control experiments indicate that amides are generated kinetically faster than side products, possibly because of the facile activation of epoxides by metal–ligand cooperation, as supported by the observation of a ruthenium-enolate species. No alcohol or free aldehyde are involved. A mechanism is proposed involving a dual role of the catalyst, which is responsible for the high yield and selectivity of the new reaction. We report the ruthenium pincer complex catalyzed acceptorless dehydrogenative coupling of epoxides and amines to form amides. The reaction offers a facile and atom economical two-step strategy for transforming alkenes into amides.![]()
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Affiliation(s)
- Yaoyu Liang
- Department of Molecular Chemistry and Materials Science, Weizmann Institute of Science Rehovot 76100 Israel
| | - Jie Luo
- Department of Molecular Chemistry and Materials Science, Weizmann Institute of Science Rehovot 76100 Israel
| | - David Milstein
- Department of Molecular Chemistry and Materials Science, Weizmann Institute of Science Rehovot 76100 Israel
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9
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Yan Z, Liu F, Wang X, Qiang Q, Li Y, Zhang Y, Rong Z. Redox-Neutral Dehydrogenative Cross-Coupling of Alcohols and Amines Enabled by Nickel Catalysis. Org Chem Front 2022. [DOI: 10.1039/d2qo00004k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Presented herein is a facile and straightforward synthetic method for the construction of amides via Ni/NHC-catalyzed amidation of alcohols with amines. The strategy exhibits various advantages over existing methods, including...
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10
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Wu Z, Li L, Li W, Lu X, Xie Y, Schaefer HF. Carbonylic-Carbon-Centered Mechanism for Catalytic α-Methylation. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00150] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zeyu Wu
- College of Pharmacy, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Hebei University, Baoding 071002, Hebei, P. R. China
| | - Longfei Li
- College of Pharmacy, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Hebei University, Baoding 071002, Hebei, P. R. China
| | - Wan Li
- College of Pharmacy, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Hebei University, Baoding 071002, Hebei, P. R. China
| | - Xuena Lu
- College of Pharmacy, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Hebei University, Baoding 071002, Hebei, P. R. China
| | - Yaoming Xie
- Center for Computational Quantum Chemistry, University of Georgia, Athens, Georgia 30602, United States
| | - Henry F. Schaefer
- Center for Computational Quantum Chemistry, University of Georgia, Athens, Georgia 30602, United States
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11
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Pham J, Jarczyk CE, Reynolds EF, Kelly SE, Kim T, He T, Keith JM, Chianese AR. The key role of the latent N-H group in Milstein's catalyst for ester hydrogenation. Chem Sci 2021; 12:8477-8492. [PMID: 35355805 PMCID: PMC8901127 DOI: 10.1039/d1sc00703c] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 05/14/2021] [Indexed: 11/21/2022] Open
Abstract
We previously demonstrated that Milstein's seminal diethylamino-substituted PNN-pincer-ruthenium catalyst for ester hydrogenation is activated by dehydroalkylation of the pincer ligand, releasing ethane and eventually forming an NHEt-substituted derivative that we proposed is the active catalyst. In this paper, we present a computational and experimental mechanistic study supporting this hypothesis. Our DFT analysis shows that the minimum-energy pathways for hydrogen activation, ester hydrogenolysis, and aldehyde hydrogenation rely on the key involvement of the nascent N-H group. We have isolated and crystallographically characterized two catalytic intermediates, a ruthenium dihydride and a ruthenium hydridoalkoxide, the latter of which is the catalyst resting state. A detailed kinetic study shows that catalytic ester hydrogenation is first-order in ruthenium and hydrogen, shows saturation behavior in ester, and is inhibited by the product alcohol. A global fit of the kinetic data to a simplified model incorporating the hydridoalkoxide and dihydride intermediates and three kinetically relevant transition states showed excellent agreement with the results from DFT.
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Affiliation(s)
- John Pham
- Department of Chemistry, Colgate University 13 Oak Drive, Hamilton New York 13346 USA
| | - Cole E Jarczyk
- Department of Chemistry, Colgate University 13 Oak Drive, Hamilton New York 13346 USA
| | - Eamon F Reynolds
- Department of Chemistry, Colgate University 13 Oak Drive, Hamilton New York 13346 USA
| | - Sophie E Kelly
- Department of Chemistry, Colgate University 13 Oak Drive, Hamilton New York 13346 USA
| | - Thao Kim
- Department of Chemistry, Colgate University 13 Oak Drive, Hamilton New York 13346 USA
| | - Tianyi He
- Department of Chemistry, Colgate University 13 Oak Drive, Hamilton New York 13346 USA
| | - Jason M Keith
- Department of Chemistry, Colgate University 13 Oak Drive, Hamilton New York 13346 USA
| | - Anthony R Chianese
- Department of Chemistry, Colgate University 13 Oak Drive, Hamilton New York 13346 USA
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12
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Kar S, Xie Y, Zhou QQ, Diskin-Posner Y, Ben-David Y, Milstein D. Near-Ambient-Temperature Dehydrogenative Synthesis of the Amide Bond: Mechanistic Insight and Applications. ACS Catal 2021; 11:7383-7393. [PMID: 34168903 PMCID: PMC8218306 DOI: 10.1021/acscatal.1c00728] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 05/10/2021] [Indexed: 01/03/2023]
Abstract
The current existing methods for the amide bond synthesis via acceptorless dehydrogenative coupling of amines and alcohols all require high reaction temperatures for effective catalysis, typically involving reflux in toluene, limiting their potential practical applications. Herein, we report a system for this reaction that proceeds under mild conditions (reflux in diethyl ether, boiling point 34.6 °C) using ruthenium PNNH complexes. The low-temperature activity stems from the ability of Ru-PNNH complexes to activate alcohol and hemiaminals at near-ambient temperatures through the assistance of the terminal N-H proton. Mechanistic studies reveal the presence of an unexpected aldehyde-bound ruthenium species during the reaction, which is also the catalytic resting state. We further utilize the low-temperature activity to synthesize several simple amide bond-containing commercially available pharmaceutical drugs from the corresponding amines and alcohols via the dehydrogenative coupling method.
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Affiliation(s)
- Sayan Kar
- Department
of Molecular Chemistry and Materials Science, The Weizmann Institute of Science, Rehovot 76100, Israel
| | - Yinjun Xie
- Department
of Molecular Chemistry and Materials Science, The Weizmann Institute of Science, Rehovot 76100, Israel
| | - Quan Quan Zhou
- Department
of Molecular Chemistry and Materials Science, The Weizmann Institute of Science, Rehovot 76100, Israel
| | - Yael Diskin-Posner
- Department
of Chemical Research Support, The Weizmann
Institute of Science, Rehovot 76100, Israel
| | - Yehoshoa Ben-David
- Department
of Molecular Chemistry and Materials Science, The Weizmann Institute of Science, Rehovot 76100, Israel
| | - David Milstein
- Department
of Molecular Chemistry and Materials Science, The Weizmann Institute of Science, Rehovot 76100, Israel
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13
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Liu TT, Tang SY, Hu B, Liu P, Bi S, Jiang YY. Mechanism and Origin of Chemoselectivity of Ru-Catalyzed Cross-Coupling of Secondary Alcohols to β-Disubstituted Ketones. J Org Chem 2020; 85:12444-12455. [DOI: 10.1021/acs.joc.0c01671] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Tian-Tian Liu
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, People’s Republic of China
| | - Shi-Ya Tang
- SINOPEC Research Institute of Safety Engineering, Qingdao 266000, People’s Republic of China
| | - Bing Hu
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, People’s Republic of China
| | - Peng Liu
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, People’s Republic of China
| | - Siwei Bi
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, People’s Republic of China
| | - Yuan-Ye Jiang
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, People’s Republic of China
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14
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Liu Y, Yue X, Li L, Li Z, Zhang L, Pu M, Yang Z, Wang C, Xiao J, Lei M. Asymmetric Induction with a Chiral Amine Catalyzed by a Ru-PNP Pincer Complex: Insight from Theoretical Investigation. Inorg Chem 2020; 59:8404-8411. [PMID: 32491852 DOI: 10.1021/acs.inorgchem.0c00823] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
In this paper, the mechanism of asymmetric amination of a racemic alcohol with Ellman's sulfinamide and the origin of diastereoselectivity catalyzed by a Ru-PNP pincer complex were studied using density functional theory (DFT). The mechanism involves dehydrogenation of the racemic alcohol, C-N coupling, and hydrogen transfer from the catalyst to the in situ formed imine. The calculated results indicate that both the alcohol dehydrogenation and imine hydrogenation are stepwise. The hydride transfer from a Ru hydride complex to the imine is shown to be the chirality-determining step in the whole catalytic cycle. It was found that the diastereoselectivity mainly stems from the hydrogen bonding interactions between the oxygen atom of the sulfinyl moiety and the hydrogen atom of the NH group of the ligand.
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Affiliation(s)
- Yangqiu Liu
- State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xin Yue
- State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, China
| | - Longfei Li
- College of Pharmaceutical Science, Hebei University, Baoding 071002, China
| | - Zhewei Li
- State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, China
| | - Lin Zhang
- State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, China
| | - Min Pu
- State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, China
| | - Zuoyin Yang
- State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, China
| | - Chao Wang
- Key Laboratory of Surface and Colloid Chemistry, Ministry of Education, and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, China
| | - Jianliang Xiao
- Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, U.K
| | - Ming Lei
- State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, China
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15
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He T, Buttner JC, Reynolds EF, Pham J, Malek JC, Keith JM, Chianese AR. Dehydroalkylative Activation of CNN- and PNN-Pincer Ruthenium Catalysts for Ester Hydrogenation. J Am Chem Soc 2019; 141:17404-17413. [PMID: 31589441 DOI: 10.1021/jacs.9b09326] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Ruthenium-pincer complexes bearing CNN- and PNN-pincer ligands with diethyl- or diisopropylamino side groups, which have previously been reported to be active precatalysts for ester hydrogenation, undergo dehydroalkylation on heating in the presence of tricyclohexylphosphine to release ethane or propane, giving five-coordinate ruthenium(0) complexes containing a nascent imine functional group. Ethane or propane is also released under the conditions of catalytic ester hydrogenation, and time-course studies show that this release is concomitant with the onset of catalysis. A new PNN-pincer ruthenium(0)-imine complex is a highly active catalyst for ester hydrogenation at room temperature, giving up to 15 500 turnovers with no added base. This complex was shown to react reversibly at room temperature with two equivalents of hydrogen to give a ruthenium(II)-dihydride complex, where the imine functionality has been hydrogenated to give a protic amine side group. These observations have potentially broad implications for the identities of catalytic intermediates in ester hydrogenation and related transformations.
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Affiliation(s)
- Tianyi He
- Department of Chemistry , Colgate University , 13 Oak Drive , Hamilton , New York 13346 , United States
| | - John C Buttner
- Department of Chemistry , Colgate University , 13 Oak Drive , Hamilton , New York 13346 , United States
| | - Eamon F Reynolds
- Department of Chemistry , Colgate University , 13 Oak Drive , Hamilton , New York 13346 , United States
| | - John Pham
- Department of Chemistry , Colgate University , 13 Oak Drive , Hamilton , New York 13346 , United States
| | - Jack C Malek
- Department of Chemistry , Colgate University , 13 Oak Drive , Hamilton , New York 13346 , United States
| | - Jason M Keith
- Department of Chemistry , Colgate University , 13 Oak Drive , Hamilton , New York 13346 , United States
| | - Anthony R Chianese
- Department of Chemistry , Colgate University , 13 Oak Drive , Hamilton , New York 13346 , United States
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16
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Dagnaw WM, Lu Y, Zhao R, Wang ZX. DFT Study of PNP-Mn-Catalyzed Acceptorless Dehydrogenative Coupling of Primary Alcohols with Hydrazine to Give Alkene or Azine. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00429] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Wasihun Menberu Dagnaw
- School of Chemical Sciences, University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Yu Lu
- School of Chemical Sciences, University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Ruihua Zhao
- School of Chemical Sciences, University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Zhi-Xiang Wang
- School of Chemical Sciences, University of the Chinese Academy of Sciences, Beijing 100049, China
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17
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Sung MMH, Prokopchuk DE, Morris RH. Phosphine-free ruthenium NCN-ligand complexes and their use in catalytic CO 2 hydrogenation. Dalton Trans 2019; 48:16569-16577. [PMID: 31560363 DOI: 10.1039/c9dt03143j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
This work investigates the hydrogenation of carbon dioxide to formate catalysed by the phosphine-free Ru complexes Ru(OtBu)(κ3-NCN)(tBubpy) and RuH(OtBu)(κ2-NCN)(tBubpy) (OtBu = tert-butoxide, κ2-NCN = 1,3-di(2-methylpyridyl)-4,5-diphenyl-1H-imidazol-2-ylidene, where one pyridyl moiety is not coordinated to Ru, tBubpy = 4,4'-di-tert-butyl-2,2'-dipyridyl). A catalytic cycle is proposed for this reaction, supported by computational studies and the characterization of the hydride and the formate intermediates proposed to be involved. Modest catalytic turnovers are demonstrated at relatively low pressures and temperatures. The proposed rate determining step is heterolytic H2 splitting to regenerate the Ru-H complex, which has an estimated hydricity of approx. 27 kcal mol-1. The κ2-NCN ligand in the hydride complex undergoes a variety of dynamic processes as detected by EXSY spectroscopy including a pyridyl "roll-over" carbon-hydrogen - ruthenium hydride exchange, possibly occuring via a Perutz-Sabo-Etienne CAM mechanism.
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Affiliation(s)
- Molly M H Sung
- Department of Chemistry, University of Toronto, 80 Saint George St., Toronto. Ont. M5S3H6, Canada.
| | - Demyan E Prokopchuk
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, NJ 07102, USA
| | - Robert H Morris
- Department of Chemistry, University of Toronto, 80 Saint George St., Toronto. Ont. M5S3H6, Canada.
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18
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Yue X, Li L, Li P, Luo C, Pu M, Yang Z, Lei M. A Computational Study on Iridium‐Catalyzed Production of Acetic Acid from Ethanol and Water Solution. CHINESE J CHEM 2019. [DOI: 10.1002/cjoc.201900150] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Xin Yue
- State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of ChemistryBeijing University of Chemical Technology Beijing 100029 China
| | - Longfei Li
- College of Pharmaceutical ScienceHebei University Baoding Hebei 071002 China
| | - Pengjie Li
- State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of ChemistryBeijing University of Chemical Technology Beijing 100029 China
| | - Chenguang Luo
- State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of ChemistryBeijing University of Chemical Technology Beijing 100029 China
| | - Min Pu
- State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of ChemistryBeijing University of Chemical Technology Beijing 100029 China
| | - Zuoyin Yang
- State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of ChemistryBeijing University of Chemical Technology Beijing 100029 China
| | - Ming Lei
- State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of ChemistryBeijing University of Chemical Technology Beijing 100029 China
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19
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Devillard M, Ehlers A, Siegler MA, van der Vlugt JI. Selective Carbanion-Pyridine Coordination of a Reactive P,N Ligand to Rh I. Chemistry 2019; 25:3875-3883. [PMID: 30600857 PMCID: PMC6519283 DOI: 10.1002/chem.201805504] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Revised: 12/12/2018] [Indexed: 01/12/2023]
Abstract
Ligands with reactive carbon sites in the periphery of a metal center have emerged as a powerful approach for metal-ligand bond activation. These reactive carbon sites are commonly generated by deprotonation strategies. Carbon-silicon bond cleavage is a potential alternative to access such constructs. Herein, the monodesilylation of bis-silyl-substituted P,N scaffold PNSi2 in the coordination sphere of [RhI (Cl)(CO)(PNSi2 )] (1) with sodium azide is disclosed. This affords a unique dinucleating anionic κ2 -C,N-κ1 -P ligand with a carbanionic methine carbon atom directly bound to rhodium as part of a four-membered Rh-N-C-C rhodacycle. This dimer undergoes meta-pyridine C-H activation facilitated by weak bases, which leads to a desymmetrization of the system and provides a σ,π-bridging 3-pyridyl fragment bound to RhI . The facile Si-C cleavage strategy may pave the way to studying the reactivity and functionalization of a variety of κ2 -C,N-coordinated pyridine scaffolds for selective transformations.
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Affiliation(s)
- Marc Devillard
- van ‘t Hoff Institute for Molecular SciencesUniversity of AmsterdamScience Park 9041098 XHAmsterdamThe Netherlands
| | - Andreas Ehlers
- van ‘t Hoff Institute for Molecular SciencesUniversity of AmsterdamScience Park 9041098 XHAmsterdamThe Netherlands
- Department of ChemistryUniversity of Johannesburg, P.O. Box 254Auckland ParkJohannesburgSouth Africa
| | - Maxime A. Siegler
- Department of ChemistryJohns Hopkins University3400 N Charles StreetBaltimoreMD21218USA
| | - Jarl Ivar van der Vlugt
- van ‘t Hoff Institute for Molecular SciencesUniversity of AmsterdamScience Park 9041098 XHAmsterdamThe Netherlands
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20
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Lu Y, Zhao R, Guo J, Liu Z, Menberu W, Wang Z. A Unified Mechanism to Account for Manganese‐ or Ruthenium‐Catalyzed Nitrile α‐Olefinations by Primary or Secondary Alcohols: A DFT Mechanistic Study. Chemistry 2019; 25:3939-3949. [DOI: 10.1002/chem.201806016] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 01/02/2019] [Indexed: 12/16/2022]
Affiliation(s)
- Yu Lu
- School of Chemical SciencesUniversity of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Ruihua Zhao
- School of Chemical SciencesUniversity of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Jiandong Guo
- School of Chemical SciencesUniversity of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Zheyuan Liu
- School of Chemical SciencesUniversity of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Wasihun Menberu
- School of Chemical SciencesUniversity of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Zhi‐Xiang Wang
- School of Chemical SciencesUniversity of Chinese Academy of Sciences Beijing 100049 P. R. China
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21
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Li H, Gonçalves TP, Lupp D, Huang KW. PN3(P)-Pincer Complexes: Cooperative Catalysis and Beyond. ACS Catal 2019. [DOI: 10.1021/acscatal.8b04495] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Huaifeng Li
- KAUST Catalysis Center and Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Théo P. Gonçalves
- KAUST Catalysis Center and Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Daniel Lupp
- KAUST Catalysis Center and Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Kuo-Wei Huang
- KAUST Catalysis Center and Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
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