1
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Marlier EE. Kappa what? Insights into the coordination modes of N 2P 2 ligands. Dalton Trans 2024; 53:1410-1420. [PMID: 38086708 DOI: 10.1039/d3dt02831c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
While first synthesized more than three decades ago, complexes supported by N2P2 ligands have seen renewed interest due to the synthesis of new ligands, expansion of their reactivity, and catalytic applications. Possessing both soft phosphines and hard nitrogen donors, N2P2 ligands can accommodate various metal geometries and coordination modes thanks to their capability to act as bidentate, tridentate or tetradentate ligands. This short review will explore how metals bind to these ligands and also highlight the complexes' reactivity and catalytic abilities.
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Affiliation(s)
- Elodie E Marlier
- Department of Chemistry, Saint Olaf College, 1520 St Olaf Avenue, Northfield, Minnesota, 55057, USA.
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2
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Ruan SH, Fan ZW, Zhang WJ, Xu H, An DL, Wei ZB, Yuan RM, Gao JX, Li YY. Asymmetric Transfer Hydrogenation of Ketones Catalyzed by Chiral Macrocyclic Cobalt(II) Complexes. J Catal 2023. [DOI: 10.1016/j.jcat.2023.01.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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3
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Hafeez J, Bilal M, Rasool N, Hafeez U, Adnan Ali Shah S, Imran S, Amiruddin Zakaria Z. Synthesis of Ruthenium complexes and their catalytic applications: A review. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104165] [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] Open
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4
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Li ZW, An DL, Wei ZB, Li YY, Gao JX. Hydrosilylation of ketones catalyzed by novel four-coordinate copper(I) complexes under mild conditions. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.153798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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5
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Lee K, Thomas CM. Nickel-Templated Replacement of Phosphine Substituents in a Tetradentate Bis(amido)bis(phosphine) Ligand. Inorg Chem 2021; 60:17348-17356. [PMID: 34709799 DOI: 10.1021/acs.inorgchem.1c02750] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The replacement of phosphine substituents in nickel-bound PNNP ligands is reported as an alternative method for preparing multidentate phosphine ligands with alkyl substituents. Treatment of the previously reported bis(phosphide) complex {K(THF)x}22Ph[PNNP]Ni (2) with 2 equiv of MeI, iPrI, and 1,3-dibromoethane formed alkyl-substituted complexes 2Ph,2Me[PNNP]Ni (3), 2Ph,2iPr[PNNP]Ni (4), and 2Ph,propylene[PNNP]Ni (5), respectively. The stereoselectivity (racemic vs meso) of these reactions can be controlled by varying the reaction temperature. The racemic mixtures of products with the new alkyl substituents in an anti configuration were favored at lower temperatures, whereas a larger proportion of meso compounds was acquired at higher temperatures. Further treatment of 3 with KH resulted in selective elimination of the remaining phenyl groups rather than the methyl substituents, affording bis(methylphosphide) complex {K(THF)x}22Me[PNNP]Ni (6). Subsequent treatment of 6 with additional MeI formed 4Me[PNNP]Ni (7), in which all four phenyl groups were replaced with methyl substituents. As a proof of concept, demetalation of the ligand from 7 was achieved using aqueous KCN to form a free dimethylphosphine-substituted ligand H24Me[PNNP] (8), and 8 was subsequently coordinated to a different metal, using PdCl2 to form 4Me[PNNP]Pd (9). Unlike the clean elimination of phenyl substituents from 3, the reactions of KH with 4 and 5 exhibited competitive elimination of both alkyl and phenyl substituents and/or attenuated reactivity.
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Affiliation(s)
- Kyounghoon Lee
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States
| | - Christine M Thomas
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States
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6
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Marlier EE, Seong CM, Brunclik SA, Nevins MH, Nolan EL, Olson AK, Osnaya M, Reuter A, Swanson ME, Wood OG, Janzen DE. Synthesis and structures of a family of hybrid donor N2P2 beta-diketiminate zinc complexes. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115150] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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7
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Doerksen RS, Hodík T, Hu G, Huynh NO, Shuler WG, Krische MJ. Ruthenium-Catalyzed Cycloadditions to Form Five-, Six-, and Seven-Membered Rings. Chem Rev 2021; 121:4045-4083. [PMID: 33576620 DOI: 10.1021/acs.chemrev.0c01133] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Ruthenium-catalyzed cycloadditions to form five-, six-, and seven-membered rings are summarized, including applications in natural product total synthesis. Content is organized by ring size and reaction type. Coverage is limited to processes that involve formation of at least one C-C bond. Processes that are stoichiometric in ruthenium or exploit ruthenium as a Lewis acid (without intervention of organometallic intermediates), ring formations that occur through dehydrogenative condensation-reduction, σ-bond activation-initiated annulations that do not result in net reduction of bond multiplicity, and photochemically promoted ruthenium-catalyzed cycloadditions are not covered.
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Affiliation(s)
- Rosalie S Doerksen
- Department of Chemistry, University of Texas at Austin,, Welch Hall (A5300), 105 East 24th Street, Austin, Texas 78712, United States
| | - Tomáš Hodík
- Department of Chemistry, University of Texas at Austin,, Welch Hall (A5300), 105 East 24th Street, Austin, Texas 78712, United States
| | - Guanyu Hu
- Department of Chemistry, University of Texas at Austin,, Welch Hall (A5300), 105 East 24th Street, Austin, Texas 78712, United States
| | - Nancy O Huynh
- Department of Chemistry, University of Texas at Austin,, Welch Hall (A5300), 105 East 24th Street, Austin, Texas 78712, United States
| | - William G Shuler
- Department of Chemistry, University of Texas at Austin,, Welch Hall (A5300), 105 East 24th Street, Austin, Texas 78712, United States
| | - Michael J Krische
- Department of Chemistry, University of Texas at Austin,, Welch Hall (A5300), 105 East 24th Street, Austin, Texas 78712, United States
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8
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Kirst C, Karaghiosoff K. Copper(I) and silver(I) complexes of bridging bis(quinaldinyl)phenylphosphine oxide ligand. PHOSPHORUS SULFUR 2020. [DOI: 10.1080/10426507.2020.1804162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Christin Kirst
- Department of Chemistry, Ludwig-Maximilian University, Munich, Germany
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9
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Azpeitia S, Barquín M, Mendicute-Fierro C, Huertos MA, Rodríguez-Diéguez A, Seco JM, San Sebastian E, Ibarlucea L, Garralda MA. (Diphenylphosphino)alkylaldehyde affords hydride- or alkyl-[(diphenylphosphino)alkylacyl]rhodium(iii) or (diphenylphosphino)alkylester complexes: theoretical and experimental diastereoselectivity. Dalton Trans 2019; 48:3300-3313. [PMID: 30778458 DOI: 10.1039/c8dt04929g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The reaction of [RhCl(COD)]2 (COD = 1,5-cyclooctadiene) with racemic PPh2(CH(Ph)CH2CHO) and pyridine (py) led to the oxidative addition of the aldehyde, and a single geometric isomer of [RhHCl(PPh2(CH(Ph)CH2CO))(py)2] (1), with hydride trans to chloride, was obtained as a mixture of two diastereomers in a 95 : 5 ratio; this was in agreement with density functional theory (DFT) calculations. In a chloroform solution, the exchange of hydride by chloride yielded [RhCl2(PPh2(CH(Ph)CH2CO))(py)2] (2) as a mixture of a kinetically preferred species, trans-py-2a, and two diastereomers, cis-Cl-2b' and cis-Cl-2b, with cis pyridines and a chloride trans to acyl; as predicted by the DFT calculations, the latter was the major species. Complex 1 reacted with racemic PPh2(CH(Ph)CH2CHO) or PPh2(o-C6H4CHO) to afford [RhHCl(PPh2(CH(Ph)CH2CO))(κ1-PPh2(CH(Ph)CH2CHO))(py)] (3) or [RhHCl(PPh2(o-C6H4CO))(κ1-PPh2(CH(Ph)CH2CHO))(py)] (4), respectively, both with a dangling alkylaldehyde. Diastereomeric mixtures with the ratios 3a/3a' = 80 : 20 and 4a/4a' = 50 : 50 were obtained. Complex 4 reacted with N-donors to afford cationic [RhH(NN)(PPh2(o-C6H4CO))(κ1-PPh2(CH(Ph)CH2CHO))]BPh4 (NN = 1,10-phenanthroline, 5; 2,2'-bipyridine, 6) or with 8-aminoquinoline (aqui) or 2-(aminomethyl)pyridine to yield imination products with terdentate ligands: [RhH(PPh2(o-C6H4CO))(κ3-PNN)]BF4 (PNN = PPh2(CH(Ph)CH2CNC9H6N), 7 and PPh2(CH(Ph)CH2CNCH2C5H4N), 8, respectively. Compounds 5-8 were obtained as equimolar a/a' mixtures of diastereomers. Moreover, 5a and 5a' could be separated. [RhCl(NBD)]2 reacted with racemic PPh2(CH(Ph)CH2CHO) and N-donors to provide nortricyclyl (Ntyl) derivatives [RhCl(NN)(Ntyl)(PPh2CH(Ph)CH2CO)] (NN = phen, 9 and bipy, 10) as an a/a' = 75 : 25 mixture of diastereomers. By reacting [RhCl(NBD)]2 with PPh2(CH(Ph)CH2CHO) and quinoline-8-carbaldehyde in methanol, the phosphino-ester complex [RhCl(Ntyl)(C9H6NCO)(κ2-PPh2CH(Ph)CH2CO(OCH3)] 11 was obtained. The initial equimolar mixture of two diastereomers readily transformed into a single diastereomer, which was found to be thermodynamically most stable by the DFT calculations. Furthermore, single crystal X-ray diffraction analysis of cis-Cl-2b, 5a, 7a, 10a and 11 is reported.
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Affiliation(s)
- Susan Azpeitia
- Facultad de Química de San Sebastián, Universidad del País Vasco (UPV/EHU), Apdo. 1072, 20080 San Sebastián, Spain.
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10
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Carmona M, Rodríguez R, Passarelli V, Lahoz FJ, García-Orduña P, Carmona D. Metal as Source of Chirality in Octahedral Complexes with Tripodal Tetradentate Ligands. J Am Chem Soc 2018; 140:912-915. [DOI: 10.1021/jacs.7b12731] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- María Carmona
- Departamento
de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC - Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Ricardo Rodríguez
- Departamento
de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC - Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Vincenzo Passarelli
- Departamento
de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC - Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
- Centro Universitario de la Defensa, Ctra. Huesca s/n, 50090 Zaragoza, Spain
| | - Fernando J. Lahoz
- Departamento
de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC - Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Pilar García-Orduña
- Departamento
de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC - Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Daniel Carmona
- Departamento
de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC - Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
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11
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Carmona M, Tejedor L, Rodríguez R, Passarelli V, Lahoz FJ, García-Orduña P, Carmona D. The Stepwise Reaction of Rhodium and Iridium Complexes of Formula [MCl 2 (κ 4 C,N,N',P-L)] with Silver Cations: A Case of trans-Influence and Chiral Self-Recognition. Chemistry 2017; 23:14532-14546. [PMID: 28749064 DOI: 10.1002/chem.201702711] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Indexed: 11/10/2022]
Abstract
Acetonitrile suspensions of the dichlorido complexes [MCl2 (κ4 C,N,N',P-L)] [M=Rh (1), Ir (2)] react with AgSbF6 in a 1:2 molar ratio affording the bis-acetonitrile complexes [M(κ4 C,N,N',P-L)(NCMe)2 ][SbF6 ]2 (3 and 4). The reaction takes place in a sequential manner and the intermediates can be isolated varying the M:Ag molar ratio. In a 2:1 molar ratio, it affords the dimetallic monochlorido-bridged compounds [{MCl(κ4 C,N,N',P-L)}2 (μ-Cl)][SbF6 ] (5 and 6). In a 1:1 molar ratio, the monosubstituted solvato-complexes [MCl(κ4 C,N,N',P-L)(Solv)][SbF6 ] (Solv=H2 O, MeCN, 7-10) were obtained. Finally, in a 2:3 molar ratio, it gives complexes 11 and 12 of formula [{M(κ4 C,N,N',P-L)(NCMe)(μ-Cl)}2 Ag][SbF6 ]3 in which a silver cation joints two cationic monosubstituted acetonitrile-complexes [MCl(κ4 C,N,N',P-L)(NCMe)]+ through the remaining chlorido ligands and two Ag⋅⋅⋅C interactions with one of the phenyl rings of each PPh2 group. In all the complexes, the aminic nitrogen and the central metal atom are stereogenic centers. In the trimetallic complexes 11 and 12, the silver atom is also a stereogenic center. The formation of the cation of the dimetallic complexes 5 and 6, as well as that of the trimetallic complexes 11 and 12, takes place with chiral molecular self-recognition. Experimental data and DFT calculations provide plausible explanations for the observed molecular recognition. The new complexes have been characterized by analytical, spectroscopic means and by X-ray diffraction methods.
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Affiliation(s)
- María Carmona
- Departamento de CatálisisyProcesos Catalíticos, Instituto de Síntesis QuímicayCatálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Departamento de Química Inorgánica, Pedro Cerbuna 12, 50009, Zaragoza, Spain
| | - Leyre Tejedor
- Departamento de CatálisisyProcesos Catalíticos, Instituto de Síntesis QuímicayCatálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Departamento de Química Inorgánica, Pedro Cerbuna 12, 50009, Zaragoza, Spain
| | - Ricardo Rodríguez
- Departamento de CatálisisyProcesos Catalíticos, Instituto de Síntesis QuímicayCatálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Departamento de Química Inorgánica, Pedro Cerbuna 12, 50009, Zaragoza, Spain
| | - Vincenzo Passarelli
- Departamento de CatálisisyProcesos Catalíticos, Instituto de Síntesis QuímicayCatálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Departamento de Química Inorgánica, Pedro Cerbuna 12, 50009, Zaragoza, Spain.,Centro Universitario de la Defensa, Ctra. Huesca s/n, 50090, Zaragoza, Spain
| | - Fernando J Lahoz
- Departamento de CatálisisyProcesos Catalíticos, Instituto de Síntesis QuímicayCatálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Departamento de Química Inorgánica, Pedro Cerbuna 12, 50009, Zaragoza, Spain
| | - Pilar García-Orduña
- Departamento de CatálisisyProcesos Catalíticos, Instituto de Síntesis QuímicayCatálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Departamento de Química Inorgánica, Pedro Cerbuna 12, 50009, Zaragoza, Spain
| | - Daniel Carmona
- Departamento de CatálisisyProcesos Catalíticos, Instituto de Síntesis QuímicayCatálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Departamento de Química Inorgánica, Pedro Cerbuna 12, 50009, Zaragoza, Spain
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12
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Durgaprasad G, Luna JA, Spielvogel KD, Haas C, Shaw SK, Daly SR. Ru(II) Complexes with a Chemical and Redox-Active S2N2 Ligand: Structures, Electrochemistry, and Metal–Ligand Cooperativity. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00623] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Gummadi Durgaprasad
- Department of Chemistry, The University of Iowa, E331
Chemistry Building, Iowa City, Iowa 52242-1294, United States
| | - Javier A. Luna
- Department of Chemistry, The University of Iowa, E331
Chemistry Building, Iowa City, Iowa 52242-1294, United States
| | - Kyle D. Spielvogel
- Department of Chemistry, The University of Iowa, E331
Chemistry Building, Iowa City, Iowa 52242-1294, United States
| | - Christian Haas
- Department of Chemistry, The University of Iowa, E331
Chemistry Building, Iowa City, Iowa 52242-1294, United States
| | - Scott K. Shaw
- Department of Chemistry, The University of Iowa, E331
Chemistry Building, Iowa City, Iowa 52242-1294, United States
| | - Scott R. Daly
- Department of Chemistry, The University of Iowa, E331
Chemistry Building, Iowa City, Iowa 52242-1294, United States
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13
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Ito T, Matsumoto T, Wakizaka M, Chang H. Coordination Behavior of
N
,
N′
‐Bis(diisopropylphosphinoacetyl)‐
o
‐phenylenediamide with Ni
II
and Cu
I
Ions. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700433] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Takahiro Ito
- Department of Applied Chemistry Faculty of Science and Engineering Chuo University 1‐13‐27 Kasuga, Bunkyo‐ku 112‐8551 Tokyo Japan
| | - Takeshi Matsumoto
- Department of Applied Chemistry Faculty of Science and Engineering Chuo University 1‐13‐27 Kasuga, Bunkyo‐ku 112‐8551 Tokyo Japan
- Precursory Research for Embryonic Science and Technology (PRESTO) Japan Science and Technology Agency (JST) 4‐1‐8 Honcho 332‐0012 Kawaguchi Saitama Japan
| | - Masanori Wakizaka
- Department of Applied Chemistry Faculty of Science and Engineering Chuo University 1‐13‐27 Kasuga, Bunkyo‐ku 112‐8551 Tokyo Japan
| | - Ho‐Chol Chang
- Department of Applied Chemistry Faculty of Science and Engineering Chuo University 1‐13‐27 Kasuga, Bunkyo‐ku 112‐8551 Tokyo Japan
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14
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Tao M, Wu F, Li T, Li YY, Gao JX. Novel chiral multidentate P 3 N 4 -type ligand for asymmetric transfer hydrogenation of aromatic ketones. CHINESE CHEM LETT 2017. [DOI: 10.1016/j.cclet.2016.05.028] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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15
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Carmona M, Rodríguez R, Méndez I, Passarelli V, Lahoz FJ, García-Orduña P, Carmona D. Stereospecific control of the metal-centred chirality of rhodium(iii) and iridium(iii) complexes bearing tetradentate CNN′P ligands. Dalton Trans 2017; 46:7332-7350. [DOI: 10.1039/c7dt01446e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Complexes of formula [MCl2(κ4C,N,N′,P-L)] (M = Rh, Ir) were diastereoselectively obtained with predetermined absolute configuration from MCl3·xH2O and tripodal tetradentate ligands.
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Affiliation(s)
- María Carmona
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH)
- CSIC – Universidad de Zaragoza
- Departamento de Química Inorgánica
- 50009 Zaragoza
- Spain
| | - Ricardo Rodríguez
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH)
- CSIC – Universidad de Zaragoza
- Departamento de Química Inorgánica
- 50009 Zaragoza
- Spain
| | - Isabel Méndez
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH)
- CSIC – Universidad de Zaragoza
- Departamento de Química Inorgánica
- 50009 Zaragoza
- Spain
| | - Vincenzo Passarelli
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH)
- CSIC – Universidad de Zaragoza
- Departamento de Química Inorgánica
- 50009 Zaragoza
- Spain
| | - Fernando J. Lahoz
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH)
- CSIC – Universidad de Zaragoza
- Departamento de Química Inorgánica
- 50009 Zaragoza
- Spain
| | - Pilar García-Orduña
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH)
- CSIC – Universidad de Zaragoza
- Departamento de Química Inorgánica
- 50009 Zaragoza
- Spain
| | - Daniel Carmona
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH)
- CSIC – Universidad de Zaragoza
- Departamento de Química Inorgánica
- 50009 Zaragoza
- Spain
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16
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Zhang D, Zhu EZ, Lin ZW, Wei ZB, Li YY, Gao JX. Enantioselective Hydrogenation of Ketones Catalyzed by Chiral Cobalt Complexes Containing PNNP Ligand. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201600358] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Dong Zhang
- State Key Laboratory of Physical Chemistry of Solid Surfaces; National Engineering Laboratory for Green Chemical Productions of Alcohols, Ethers, and Esters; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen Fujian 361005 P.R. China
| | - En-Ze Zhu
- State Key Laboratory of Physical Chemistry of Solid Surfaces; National Engineering Laboratory for Green Chemical Productions of Alcohols, Ethers, and Esters; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen Fujian 361005 P.R. China
| | - Zhi-Wei Lin
- State Key Laboratory of Physical Chemistry of Solid Surfaces; National Engineering Laboratory for Green Chemical Productions of Alcohols, Ethers, and Esters; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen Fujian 361005 P.R. China
| | - Zan-Bin Wei
- State Key Laboratory of Physical Chemistry of Solid Surfaces; National Engineering Laboratory for Green Chemical Productions of Alcohols, Ethers, and Esters; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen Fujian 361005 P.R. China
| | - Yan-Yun Li
- State Key Laboratory of Physical Chemistry of Solid Surfaces; National Engineering Laboratory for Green Chemical Productions of Alcohols, Ethers, and Esters; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen Fujian 361005 P.R. China
| | - Jing-Xing Gao
- State Key Laboratory of Physical Chemistry of Solid Surfaces; National Engineering Laboratory for Green Chemical Productions of Alcohols, Ethers, and Esters; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen Fujian 361005 P.R. China
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17
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Stark MJ, Shaw MJ, Rath NP, Bauer EB. Synthesis, Structural Characterization, and Catalytic Activity of Indenyl Tris(
N
‐pyrrolyl)phosphine Complexes of Ruthenium. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201501381] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Matthew J. Stark
- Department of Chemistry and Biochemistry, University of Missouri – St. Louis, One University Boulevard, St. Louis, MO 63121, USA, http://www.eike‐bauer.net
| | - Michael J. Shaw
- Department of Chemistry, Southern Illinois University Edwardsville, Edwardsville, IL 62025, USA
| | - Nigam P. Rath
- Department of Chemistry and Biochemistry, University of Missouri – St. Louis, One University Boulevard, St. Louis, MO 63121, USA, http://www.eike‐bauer.net
- Center for Nanoscience, University of Missouri, St. Louis, MO, USA
| | - Eike B. Bauer
- Department of Chemistry and Biochemistry, University of Missouri – St. Louis, One University Boulevard, St. Louis, MO 63121, USA, http://www.eike‐bauer.net
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18
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Li YY, Yu SL, Shen WY, Gao JX. Iron-, Cobalt-, and Nickel-Catalyzed Asymmetric Transfer Hydrogenation and Asymmetric Hydrogenation of Ketones. Acc Chem Res 2015; 48:2587-98. [PMID: 26301426 DOI: 10.1021/acs.accounts.5b00043] [Citation(s) in RCA: 313] [Impact Index Per Article: 34.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Chiral alcohols are important building blocks in the pharmaceutical and fine chemical industries. The enantioselective reduction of prochiral ketones catalyzed by transition metal complexes, especially asymmetric transfer hydrogenation (ATH) and asymmetric hydrogenation (AH), is one of the most efficient and practical methods for producing chiral alcohols. In both academic laboratories and industrial operations, catalysts based on noble metals such as ruthenium, rhodium, and iridium dominated the asymmetric reduction of ketones. However, the limited availability, high price, and toxicity of these critical metals demand their replacement with abundant, nonprecious, and biocommon metals. In this respect, the reactions catalyzed by first-row transition metals, which are more abundant and benign, have attracted more and more attention. As one of the most abundant metals on earth, iron is inexpensive, environmentally benign, and of low toxicity, and as such it is a fascinating alternative to the precious metals for catalysis and sustainable chemical manufacturing. However, iron catalysts have been undeveloped compared to other transition metals. Compared with the examples of iron-catalyzed asymmetric reduction, cobalt- and nickel-catalyzed ATH and AH of ketones are even seldom reported. In early 2004, we reported the first ATH of ketones with catalysts generated in situ from iron cluster complex and chiral PNNP ligand. Since then, we have devoted ourselves to the development of ATH and AH of ketones with iron, cobalt, and nickel catalysts containing novel chiral aminophosphine ligands. In our study, the iron catalyst containing chiral aminophosphine ligands, which are expected to control the stereochemistry at the metal atom, restrict the number of possible diastereoisomers, and effectively transfer chiral information, are successful catalysts for enantioselective reduction of ketones. Among these novel chiral aminophosphine ligands, 22-membered macrocycle P2N4 exhibited extraordinary enantioselectivities when combined with iron(0) cluster Fe3(CO)12. A broad scope of ketones including aromatic, heteroaromatic, and β-ketoesters can be reduced smoothly with excellent enantioselectivities (up to 99% ee) approaching or exceeding those achievable with the noble metal catalysts. Notably, the chiral iron-based catalyst proved to be highly efficient for both ATH as well as AH of various ketones. Until now, such "universal" catalyst is very rare. Preliminary studies suggest that the AH reaction most likely involved iron particles as the active catalytic species. These research results point to a new direction in developing viable effective nonprecious metal catalysts for asymmetric reduction and probably for other asymmetric catalytic reactions as well.
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Affiliation(s)
- Yan-Yun Li
- State Key
Laboratory of Physical
Chemistry of Solid Surfaces, National Engineering Laboratory for Green
Chemical Productions of Alcohols, Ethers, and Esters, College of Chemistry
and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China
| | - Shen-Luan Yu
- State Key
Laboratory of Physical
Chemistry of Solid Surfaces, National Engineering Laboratory for Green
Chemical Productions of Alcohols, Ethers, and Esters, College of Chemistry
and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China
| | - Wei-Yi Shen
- State Key
Laboratory of Physical
Chemistry of Solid Surfaces, National Engineering Laboratory for Green
Chemical Productions of Alcohols, Ethers, and Esters, College of Chemistry
and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China
| | - Jing-Xing Gao
- State Key
Laboratory of Physical
Chemistry of Solid Surfaces, National Engineering Laboratory for Green
Chemical Productions of Alcohols, Ethers, and Esters, College of Chemistry
and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China
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19
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Huber R, Bigler R, Mezzetti A. Chiral Iron(II) NPPN Complexes: Synthesis and Application in the Asymmetric Strecker Reaction of Azomethine Imines. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00357] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Raffael Huber
- Department
of Chemistry and
Applied Biosciences, ETH Zürich, CH-8093 Zürich, Switzerland
| | - Raphael Bigler
- Department
of Chemistry and
Applied Biosciences, ETH Zürich, CH-8093 Zürich, Switzerland
| | - Antonio Mezzetti
- Department
of Chemistry and
Applied Biosciences, ETH Zürich, CH-8093 Zürich, Switzerland
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20
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Li ZZ, Wen AH, Yao SY, Ye BH. Enantioselective Syntheses of Sulfoxides in Octahedral Ruthenium(II) Complexes via a Chiral-at-Metal Strategy. Inorg Chem 2015; 54:2726-33. [DOI: 10.1021/ic502898e] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Zheng-Zheng Li
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry,
School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | - A-Hao Wen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry,
School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | - Su-Yang Yao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry,
School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | - Bao-Hui Ye
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry,
School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China
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21
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Li Z, Yao S, Ye B. Enantioselective Oxidation of Thioethers to Sulfoxides by Means of a Structural Template with Chiral‐at‐Metal Ruthenium Complexes. Chempluschem 2014. [DOI: 10.1002/cplu.201402243] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Zheng‐Zheng Li
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat‐Sen University, Guangzhou 510275 (P. R. China), Fax: (+86) 20 84112245
| | - Su‐Yang Yao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat‐Sen University, Guangzhou 510275 (P. R. China), Fax: (+86) 20 84112245
| | - Bao‐Hui Ye
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat‐Sen University, Guangzhou 510275 (P. R. China), Fax: (+86) 20 84112245
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22
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Hsu SF, Plietker B. Selective transfer hydrogenation and hydrogenation of ketones using a defined monofunctional (P^N(Bn)^N(Bn)^P)-Ru(II) complex. Chemistry 2014; 20:4242-5. [PMID: 24623666 DOI: 10.1002/chem.201304770] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Indexed: 11/11/2022]
Abstract
A defined (P^N^N^P)-Ru complex possessing tertiary amines within the ligand backbone proved to be highly active both in transfer hydrogenations and hydrogenations of a variety of ketones. As compared to the existing catalytic systems, no bifunctional activation of H2 or of the substrate by the metal center and a secondary amine within the ligand backbone is required to obtain high activities at catalyst loadings of down to 10 ppm.
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Affiliation(s)
- Shih-Fan Hsu
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart (Germany), Fax: (+49) 711-68564285
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23
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Li ZZ, Yao SY, Wu JJ, Ye BH. In situ generation of sulfoxides with predetermined chirality via a structural template with a chiral-at-metal ruthenium complex. Chem Commun (Camb) 2014; 50:5644-7. [DOI: 10.1039/c4cc01907e] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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24
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Ruzziconi R, Bellachioma G, Ciancaleoni G, Lepri S, Superchi S, Zanasi R, Monaco G. Cationic half-sandwich quinolinophaneoxazoline-based (η6-p-cymene)ruthenium(ii) complexes exhibiting different chirality types: synthesis and structural determination by complementary spectroscopic methods. Dalton Trans 2014; 43:1636-50. [DOI: 10.1039/c3dt52291a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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25
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Egloff J, Ranocchiari M, Schira A, Schotes C, Mezzetti A. Highly Enantioselective Ruthenium/PNNP-Catalyzed Imine Aziridination: Evidence of Carbene Transfer from a Diazoester Complex. Organometallics 2013. [DOI: 10.1021/om400735p] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Joël Egloff
- Department of Chemistry and Applied
Biosciences, ETH Zürich, CH-8093 Zürich, Switzerland
| | - Marco Ranocchiari
- Department of Chemistry and Applied
Biosciences, ETH Zürich, CH-8093 Zürich, Switzerland
| | - Amata Schira
- Department of Chemistry and Applied
Biosciences, ETH Zürich, CH-8093 Zürich, Switzerland
| | - Christoph Schotes
- Department of Chemistry and Applied
Biosciences, ETH Zürich, CH-8093 Zürich, Switzerland
| | - Antonio Mezzetti
- Department of Chemistry and Applied
Biosciences, ETH Zürich, CH-8093 Zürich, Switzerland
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26
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Pradeep CP, Das SK. Coordination and supramolecular aspects of the metal complexes of chiral N-salicyl-β-amino alcohol Schiff base ligands: Towards understanding the roles of weak interactions in their catalytic reactions. Coord Chem Rev 2013. [DOI: 10.1016/j.ccr.2013.01.028] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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27
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Hsu SF, Plietker B. PNNP-Ligated RuIIComplexes as Efficient Catalysts for Mild Benzylic CH Oxidation. ChemCatChem 2012. [DOI: 10.1002/cctc.201200590] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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28
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Li J, Liao SH, Xiong H, Zhou YY, Sun XL, Zhang Y, Zhou XG, Tang Y. Highly Diastereo- and Enantioselective Cyclopropanation of 1,2-Disubstituted Alkenes. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201203218] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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29
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Li J, Liao SH, Xiong H, Zhou YY, Sun XL, Zhang Y, Zhou XG, Tang Y. Highly diastereo- and enantioselective cyclopropanation of 1,2-disubstituted alkenes. Angew Chem Int Ed Engl 2012; 51:8838-41. [PMID: 22829540 DOI: 10.1002/anie.201203218] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2012] [Revised: 07/02/2012] [Indexed: 11/08/2022]
Affiliation(s)
- Jun Li
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, P.R. China
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30
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Mikhailine AA, Maishan MI, Lough AJ, Morris RH. The mechanism of efficient asymmetric transfer hydrogenation of acetophenone using an iron(II) complex containing an (S,S)-Ph2PCH2CH═NCHPhCHPhN═CHCH2PPh2 ligand: partial ligand reduction is the key. J Am Chem Soc 2012; 134:12266-80. [PMID: 22793266 DOI: 10.1021/ja304814s] [Citation(s) in RCA: 151] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
On the basis of a kinetic study and other evidence, we propose a mechanism of activation and operation of a highly active system generated from the precatalyst trans-[Fe(CO)(Br)(Ph(2)PCH(2)CH═N-((S,S)-C(Ph)H-C(Ph)H)-N═CHCH(2)PPh(2))][BPh(4)] (2) for the asymmetric transfer hydrogenation of acetophenone in basic isopropanol. An induction period for catalyst activation is observed before the catalytic production of 1-phenethanol. The activation step is proposed to involve a rapid reaction of 2 with excess base to give an ene-amido complex [Fe(CO)(Ph(2)PCH(2)CH═N-((S,S)-C(Ph)H-C(Ph)H)-NCH═CHPPh(2))](+) (Fe(p)) and a bis(enamido) complex Fe(CO)(Ph(2)PCH═CH-N-(S,S-CH(Ph)CH(Ph))-N-CH═CHPPh(2)) (5); 5 was partially characterized. The slow step in the catalyst activation is thought to be the reaction of Fe(p) with isopropoxide to give the catalytically active amido-(ene-amido) complex Fe(a) with a half-reduced, deprotonated PNNP ligand. This can be trapped by reaction with HCl in ether to give, after isolation with NaBPh(4), [Fe(CO)(Cl)(Ph(2)PCH(2)CH(2)N(H)-((S,S)-CH(Ph)CH(Ph))-N═CHCH(2)PPh(2))][BPh(4)] (7) which was characterized using multinuclear NMR and high-resolution mass spectrometry. When compound 7 is treated with base, it directly enters the catalytic cycle with no induction period. A precatalyst with the fully reduced P-NH-NH-P ligand was prepared and characterized by single crystal X-ray diffraction. It was found to be much less active than 2 or 7. Reaction profiles obtained by varying the initial concentrations of acetophenone, precatalyst, base, and acetone and by varying the temperature were fit to the kinetic model corresponding to the proposed mechanism by numerical simulation to obtain a unique set of rate constants and thermodynamic parameters.
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Affiliation(s)
- Alexandre A Mikhailine
- Davenport Laboratory, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
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31
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Herndon JW. The chemistry of the carbon–transition metal double and triple bond: Annual survey covering the year 2010. Coord Chem Rev 2012. [DOI: 10.1016/j.ccr.2012.02.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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32
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Lall MS, Hoge G, Tran TP, Kissel W, Murphy ST, Taylor C, Hutchings K, Samas B, Ellsworth EL, Curran T, Showalter HDH. Stereoselective Synthesis of (S)-3-(Methylamino)-3-((R)-pyrrolidin-3-yl)propanenitrile. J Org Chem 2012; 77:4732-9. [DOI: 10.1021/jo3004716] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Manjinder S. Lall
- Pfizer Worldwide Research and Development, Eastern Point Road, Groton,
Connecticut 06340, United States
| | - Garrett Hoge
- Dr. Reddy’s, Cambridge, Cambridgeshire
CB40PE, U.K
| | - Tuan P. Tran
- Pfizer Worldwide Research and Development, Eastern Point Road, Groton,
Connecticut 06340, United States
| | - William Kissel
- Ironwood Pharmaceuticals, Cambridge, Massachusetts
02142, United States
| | - Sean T. Murphy
- Takeda California, San Diego, California 92121, United
States
| | - Clarke Taylor
- Lycera Corp., Ann Arbor, Michigan 48109, United States
| | - Kim Hutchings
- AstraZeneca,
Waltham, Massachusetts 02451, United States
| | - Brian Samas
- Pfizer Worldwide Research and Development, Eastern Point Road, Groton,
Connecticut 06340, United States
| | - Edmund L. Ellsworth
- Pfizer Worldwide Research and Development, Portage Street, Kalamazoo,
Michigan 49007, United States
| | - Timothy Curran
- Vertex Pharmaceuticals, Cambridge, Massachusetts
02139, United States
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33
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Prokopchuk DE, Sonnenberg JF, Meyer N, Zimmer-De Iuliis M, Lough AJ, Morris RH. Spectroscopic and DFT Study of Ferraaziridine Complexes Formed in the Transfer Hydrogenation of Acetophenone Catalyzed Using trans-[Fe(CO)(NCMe)(PPh2C6H4CH═NCH2−)2-κ4P,N,N,P](BF4)2. Organometallics 2012. [DOI: 10.1021/om201170f] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Demyan E. Prokopchuk
- Department of Chemistry, University of Toronto, 80 St George
Street, Toronto, Ontario M5S 3H6, Canada
| | - Jessica F. Sonnenberg
- Department of Chemistry, University of Toronto, 80 St George
Street, Toronto, Ontario M5S 3H6, Canada
| | - Nils Meyer
- Department of Chemistry, University of Toronto, 80 St George
Street, Toronto, Ontario M5S 3H6, Canada
| | - Marco Zimmer-De Iuliis
- Department of Chemistry, University of Toronto, 80 St George
Street, Toronto, Ontario M5S 3H6, Canada
| | - Alan J. Lough
- Department of Chemistry, University of Toronto, 80 St George
Street, Toronto, Ontario M5S 3H6, Canada
| | - Robert H. Morris
- Department of Chemistry, University of Toronto, 80 St George
Street, Toronto, Ontario M5S 3H6, Canada
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34
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Yu S, Shen W, Li Y, Dong Z, Xu Y, Li Q, Zhang J, Gao J. Iron-Catalyzed Highly Enantioselective Reduction of Aromatic Ketones with Chiral P2N4-Type Macrocycles. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201100733] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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35
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Bauer EB. Chiral-at-metal complexes and their catalytic applications in organic synthesis. Chem Soc Rev 2012; 41:3153-67. [PMID: 22306968 DOI: 10.1039/c2cs15234g] [Citation(s) in RCA: 204] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
This tutorial review provides an introduction to the synthesis and characterization of chiral-at-metal complexes and their catalytic application in organic transformations. The synthetic access to these architectures either via chiral resolution or by employment of chiral ligands is described, characterization techniques for the complexes are referenced and the application of the R/S nomenclature is explained. Racemization and epimerization processes are often observed for the title compounds; the article gives mechanistic insights to these processes and describes how to recognize and document them. Finally, key catalytic applications in organic synthesis are presented and how the molecular architectures of the chiral-at-metal complexes lead to stereodifferentiation and, thus to enantiomeric excesses in the products.
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Affiliation(s)
- Eike B Bauer
- University of Missouri-St. Louis, Department of Chemistry and Biochemistry, One University Boulevard, St. Louis, MO 63121, USA.
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36
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Schotes C, Althaus M, Aardoom R, Mezzetti A. Asymmetric Diels-Alder and Ficini reactions with alkylidene β-ketoesters catalyzed by chiral ruthenium PNNP complexes: mechanistic insight. J Am Chem Soc 2012; 134:1331-43. [PMID: 22191539 DOI: 10.1021/ja210372u] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Hydride abstraction from the β-position of the enolato ligand of the previously reported complex [Ru(3a-H)(PNNP)]PF(6) (5a; 3a-H is the enolate of 2-tert-butoxycarbonylcyclopentanone) with (Ph(3)C)PF(6) gives the dicationic complex [Ru(6a)(PNNP)](2+) (7a) as a single diastereoisomer, which contains the unsaturated β-ketoester 2-tert-butoxycarbonyl-2-cyclopenten-1-one (6a) as a chelating ligand. The methyl analogue 2-methoxycarbonylcyclopentanone (3b) gives [Ru(3b-H)(PNNP)]PF(6) as a mixture of noninterconverting diastereoisomers (ester group of 3b trans to P, 5b; or to N, 5c), which were separated by column chromatography. Hydride abstraction from 5b (or 5c) yields diastereomerically pure [Ru(6b)(PNNP)](2+) (7b or 7c). Complexes 7b and 7c do not interconvert at room temperature in CD(2)Cl(2) and form opposite enantiomers of the Diels-Alder adduct upon reaction with Dane's diene (1 equiv). X-ray studies of 7a, 5b, and 5c give insight into the origin of enantioselection and the sense of asymmetric induction in the previously reported asymmetric Diels-Alder and Ficini cycloaddition reactions with 2,3-disubstituted butadienes and ynamides, respectively. Stoichiometric reactions (substrate coordination, cycloaddition, and product displacement) between [Ru(OEt(2))(2)(PNNP)](2+) (2), 6b (or 6a), and Dane's diene (15, to give estrone derivatives) or N-benzyl-N-(cyclohexylethynyl)-4-methylbenzenesulfonamide (17, to give cyclobutenamides) suggest that product displacement from the catalyst is turnover limiting.
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Affiliation(s)
- Christoph Schotes
- Department of Chemistry and Applied Biosciences, ETH Zürich, CH-8093 Zürich, Switzerland
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37
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Grabulosa A, Mannu A, Mezzetti A, Muller G. Neutral p-cymene ruthenium complexes with P-stereogenic monophosphines. New catalytic precursors in enantioselective transfer hydrogenation and cyclopropanation. J Organomet Chem 2012. [DOI: 10.1016/j.jorganchem.2011.09.015] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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38
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Abstract
A simple approach to generating in situ metal-templated tris-(2-picolyl)amine-like multicomponent assemblies with potential applications in molecular recognition and sensing is reported. The assembly is based on the reversible covalent association between di-(2-picolyl)amine and aldehydes. Zinc ion is best for inducing assembly among the metal salts investigated, whereas 2-picolinaldehyde is the best among the heterocyclic aldehydes studied. Although an equilibrium constant of 6.6×10(3) M(-1) was measured for the assembly formed by 2-picolinaldehdye, di-(2-picolyl)amine, and zinc triflate, the equilibrium constants for other systems are in the 10(2) M(-1) range. X-ray structural analysis revealed that zinc adopts trigonal-bipyramidal geometry within the assembled ligand. The diversity and equilibrium of the assemblies are readily altered by simply changing concentrations, varying components, or adding counteranions.
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Affiliation(s)
- Lei You
- Department of Chemistry and Biochemistry, The University of Texas at Austin, Austin, TX 78712, USA
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39
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Blacquiere JM, Higman CS, McDonald R, Fogg DE. A Reactive Ru–Binaphtholate Building Block with Self-Tuning Hapticity. J Am Chem Soc 2011; 133:14054-62. [DOI: 10.1021/ja204767a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Johanna M. Blacquiere
- Center for Catalysis Research & Innovation and Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Carolyn S. Higman
- Center for Catalysis Research & Innovation and Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Robert McDonald
- Center for Catalysis Research & Innovation and Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Deryn E. Fogg
- Center for Catalysis Research & Innovation and Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
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40
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Schotes C, Ranocchiari M, Mezzetti A. Aqua and Diethyl Ether PNNP Complexes of Ruthenium(II): Structure and Solution Behavior. Organometallics 2011. [DOI: 10.1021/om200289x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Christoph Schotes
- Department of Chemistry and Applied Biosciences, ETH Zürich, CH-8093 Zürich, Switzerland
| | - Marco Ranocchiari
- Department of Chemistry and Applied Biosciences, ETH Zürich, CH-8093 Zürich, Switzerland
| | - Antonio Mezzetti
- Department of Chemistry and Applied Biosciences, ETH Zürich, CH-8093 Zürich, Switzerland
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41
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Dyer H, Picot A, Vendier L, Auffrant A, Le Floch P, Sabo-Etienne S. Tridentate and Tetradentate Iminophosphorane-Based Ruthenium Complexes in Catalytic Transfer Hydrogenation of Ketones. Organometallics 2011. [DOI: 10.1021/om101058m] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hellen Dyer
- CNRS, LCC (Laboratoire de Chimie de Coordination), Université de Toulouse, UPS, INPT, 205 Route de Narbonne, F-31077 Toulouse, France
| | - Alexandre Picot
- CNRS, LCC (Laboratoire de Chimie de Coordination), Université de Toulouse, UPS, INPT, 205 Route de Narbonne, F-31077 Toulouse, France
| | - Laure Vendier
- CNRS, LCC (Laboratoire de Chimie de Coordination), Université de Toulouse, UPS, INPT, 205 Route de Narbonne, F-31077 Toulouse, France
| | - Audrey Auffrant
- Laboratoire Hétéroélements et Coordination, Ecole Polytechnique, CNRS, 91128 Palaiseau Cedex, France
| | - Pascal Le Floch
- Laboratoire Hétéroélements et Coordination, Ecole Polytechnique, CNRS, 91128 Palaiseau Cedex, France
| | - Sylviane Sabo-Etienne
- CNRS, LCC (Laboratoire de Chimie de Coordination), Université de Toulouse, UPS, INPT, 205 Route de Narbonne, F-31077 Toulouse, France
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