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Lu B, Wu X, Li C, Ding G, Li W, Xie X, Zhang Z. Highly Diastereo- and Enantioselective Access to syn-α-Amido β-Hydroxy Esters via Ruthenium-Catalyzed Dynamic Kinetic Resolution-Asymmetric Hydrogenation. J Org Chem 2019; 84:3201-3213. [PMID: 30776889 DOI: 10.1021/acs.joc.8b03106] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Dynamic kinetic resolution (DKR) of racemic aryl α-amino β-ketoesters via Ru-diphosphine-catalyzed asymmetric hydrogenation was realized at 70 °C under 50 atm of hydrogen, affording syn α-amido β-hydroxy esters in high yields (up to 96%) with high reactivity (TON up to 940) and diastereo- and enantioselectivities (up to 99:1 dr, 98% ee). These hydrogenation products provide valuable chiral synthons in many natural products and pharmaceuticals. Gram-scale DKR asymmetric hydrogenation (DKR-AH) was also performed with retained reactivity and stereoselectivity, revealing the synthetic utility of this method.
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Affiliation(s)
- Bin Lu
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , China
| | - Xiaoyu Wu
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , China
| | - Chengyang Li
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , China
| | - Guangni Ding
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , China
| | - Wanfang Li
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , China
| | - Xiaomin Xie
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , China
| | - Zhaoguo Zhang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , China.,Shanghai Institute of Organic Chemistry , Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , China
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2
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Theuerkauf J, Franciò G, Leitner W. Continuous-Flow Asymmetric Hydrogenation of the β-Keto Ester Methyl Propionylacetate in Ionic Liquid-Supercritical Carbon Dioxide Biphasic Systems. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201200724] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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3
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Li W, Tao X, Ma X, Fan W, Li X, Zhao M, Xie X, Zhang Z. Ruthenium-Catalyzed Asymmetric Hydrogenation of 3-Oxoglutaric Acid Derivatives: A Study of Unconventional Solvent and Substituent Effects. Chemistry 2012; 18:16531-9. [DOI: 10.1002/chem.201202614] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2012] [Revised: 08/30/2012] [Indexed: 11/11/2022]
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4
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Chen Y, Park SH, Lee CW, Lee C. Ruthenium-Catalyzed Three-Component Coupling via Hydrative Conjugate Addition of Alkynes to Alkenes: One-Pot Synthesis of 1,4-Dicarbonyl Compounds. Chem Asian J 2011; 6:2000-4. [DOI: 10.1002/asia.201100266] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2011] [Indexed: 11/11/2022]
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5
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Tang YY, Li RX, Li XJ, Wong NB, Tin KC, Zhang ZY, Mak TCW. Preparation and characterization of a new dinuclear ruthenium complex with BDPX ligand and its catalytic hydrogenation reactions for cinnamaldehyde. CHINESE J CHEM 2010. [DOI: 10.1002/cjoc.20040220724] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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6
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7
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Meng Q, Sun Y, Ratovelomanana-Vidal V, Genêt JP, Zhang Z. CeCl3·7H2O: An Effective Additive in Ru-Catalyzed Enantioselective Hydrogenation of Aromatic α-Ketoesters. J Org Chem 2008; 73:3842-7. [DOI: 10.1021/jo800228e] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Qinghua Meng
- School of Chemistry and Chemical Technology, Shanghai Jiaotong University, 800 Dongchuan Road, Shanghai 200240, China, Shanghai Institute of Organic Chemistry, 354 Fenglin Road, Shanghai 200032, China, and Laboratoire de Synthèse Sélective Organique et Produits Naturels, Ecole Nationale Supérieure de Chimie de Paris, 11 Rue P. et M. Curie, 75231 Paris Cedex 05, France
| | - Yanhui Sun
- School of Chemistry and Chemical Technology, Shanghai Jiaotong University, 800 Dongchuan Road, Shanghai 200240, China, Shanghai Institute of Organic Chemistry, 354 Fenglin Road, Shanghai 200032, China, and Laboratoire de Synthèse Sélective Organique et Produits Naturels, Ecole Nationale Supérieure de Chimie de Paris, 11 Rue P. et M. Curie, 75231 Paris Cedex 05, France
| | - Virginie Ratovelomanana-Vidal
- School of Chemistry and Chemical Technology, Shanghai Jiaotong University, 800 Dongchuan Road, Shanghai 200240, China, Shanghai Institute of Organic Chemistry, 354 Fenglin Road, Shanghai 200032, China, and Laboratoire de Synthèse Sélective Organique et Produits Naturels, Ecole Nationale Supérieure de Chimie de Paris, 11 Rue P. et M. Curie, 75231 Paris Cedex 05, France
| | - Jean Pierre Genêt
- School of Chemistry and Chemical Technology, Shanghai Jiaotong University, 800 Dongchuan Road, Shanghai 200240, China, Shanghai Institute of Organic Chemistry, 354 Fenglin Road, Shanghai 200032, China, and Laboratoire de Synthèse Sélective Organique et Produits Naturels, Ecole Nationale Supérieure de Chimie de Paris, 11 Rue P. et M. Curie, 75231 Paris Cedex 05, France
| | - Zhaoguo Zhang
- School of Chemistry and Chemical Technology, Shanghai Jiaotong University, 800 Dongchuan Road, Shanghai 200240, China, Shanghai Institute of Organic Chemistry, 354 Fenglin Road, Shanghai 200032, China, and Laboratoire de Synthèse Sélective Organique et Produits Naturels, Ecole Nationale Supérieure de Chimie de Paris, 11 Rue P. et M. Curie, 75231 Paris Cedex 05, France
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Howard JA, Ilyashenko G, Sparkes H, Whiting A, Wright A. Mechanistic Insights into Transition Metal-Catalysed Oxidation of a Hydroxamic Acid within situ Diels–Alder Trapping of the Acyl Nitroso Derivative. Adv Synth Catal 2008. [DOI: 10.1002/adsc.200700568] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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9
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Mothes E, Sentets S, Luquin MA, Mathieu R, Lugan N, Lavigne G. New Insight into the Reactivity of Pyridine-Functionalized Phosphine Complexes of Ruthenium(II) with Respect to Olefin Metathesis and Transfer Hydrogenation. Organometallics 2008. [DOI: 10.1021/om7012106] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Emmanuelle Mothes
- Laboratoire de Chimie de Coordination du CNRS, 205 Route de Narbonne, 31077 Toulouse Cedex, France
| | - Stephane Sentets
- Laboratoire de Chimie de Coordination du CNRS, 205 Route de Narbonne, 31077 Toulouse Cedex, France
| | - Maria Asuncion Luquin
- Laboratoire de Chimie de Coordination du CNRS, 205 Route de Narbonne, 31077 Toulouse Cedex, France
| | - René Mathieu
- Laboratoire de Chimie de Coordination du CNRS, 205 Route de Narbonne, 31077 Toulouse Cedex, France
| | - Noël Lugan
- Laboratoire de Chimie de Coordination du CNRS, 205 Route de Narbonne, 31077 Toulouse Cedex, France
| | - Guy Lavigne
- Laboratoire de Chimie de Coordination du CNRS, 205 Route de Narbonne, 31077 Toulouse Cedex, France
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Becker C, Kieltsch I, Broggini D, Mezzetti A. Bridging Fluorides and Hard/Soft Mismatch in d6 and d8 Complexes: The Case of [Tl(μ-F)3Ru(PPh3)3]. Inorg Chem 2003; 42:8417-29. [PMID: 14658895 DOI: 10.1021/ic034888e] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[RuCl2(PPh3)3] reacts with thallium(I) fluoride to give either [Tl(mu-F)3Ru(PPh3)3] (1) or [Tl(mu3-F)(mu2-Cl)2Ru2(mu2-Cl)(mu2-F)(PPh3)4] (2) depending on the excess of TlF used. Both 1 and 2 were fully characterized, including X-ray structure determinations. Complex 1 reacts with dihydrogen to form the known ruthenium hydride complex [Ru(H)2(H2)(PPh3)3] upon hydrogenolysis of the Ru-F bond. The reaction of 1 with activated alkyl bromides (R-Br) gives the corresponding alkyl fluorides and the trinuclear complex [Tl(mu3-F)(mu2-F)(mu2-X)Ru2(mu2-Br)(mu2-F)(PPh3)4] (X=Br, F) (3), whose structure closely resembles that of 2. However, 1 is not active as catalyst for the nucleophilic fluorination of R-Br in the presence of thallium fluoride. The effect of the bridging coordination mode of fluoride on the Ru-F bond is discussed in terms of the HSAB principle, which suggests a more general model for predicting the stability of d6 and d8 complexes containing hard ligands (such as fluoro, oxo, and amido).
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Affiliation(s)
- Claus Becker
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology, ETH Hönggerberg, CH-8093 Zürich, Switzerland
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11
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Cyr PW, Rettig SJ, Patrick BO, James BR. Formation of Ruthenium(II)−Bis(phosphine) Monoxide Complexes from the Bis(phosphine) Precursors: BINAP-Monoxide (BINAPO) as a Six-Electron (P,O,η2- Naphthyl) Donor. Organometallics 2002. [DOI: 10.1021/om0205344] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Paul W. Cyr
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, V6T 1Z1
| | - Steven J. Rettig
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, V6T 1Z1
| | - Brian O. Patrick
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, V6T 1Z1
| | - Brian R. James
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, V6T 1Z1
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12
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Daley CJA, Bergens SH. The first complete identification of a diastereomeric catalyst-substrate (alkoxide) species in an enantioselective ketone hydrogenation. Mechanistic investigations. J Am Chem Soc 2002; 124:3680-91. [PMID: 11929258 DOI: 10.1021/ja0102991] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The enantioselective hydrogenations of the dialkyl 3,3-dimethyloxaloacetate ketone substrates (2, 3, and 4; alkyl = Me, (i)Pr, and (t)Bu, respectively) were catalyzed by [Ru((R)-BINAP)(H)(MeCN)(n)(sol)(3-n)](BF(4)) (1, n = 0-3, sol = THF or MeOH, (R)-BINAP = (R)-2,2'-bis(diphenylphosphino)-1,1'-binaphthyl) in up to 82% ee (R). Reaction of the active catalyst 1 with 1 equiv of substrate (2, 3, or 4) in THF or MeOH solution formed the diastereomeric catalyst-alkoxide complexes [Ru((R)-BINAP)(MeCN)(OCH(CO(2)R)-(C(CH(3))(2)CO(2)R))](BF(4)) (5/6 R = Me, 8/9 R = (i)Pr, and 10 R = (t)Bu, respectively) via hydride addition to the ketone carbonyl carbon and ruthenium addition to oxygen. The absolute configurations at the alkoxide groups ((R)- for the major diastereomers 5, 8, and 10) were determined via cleavage of the ruthenium-alkoxide bond with 1 equiv of HBF(4).OEt(2). The solution structures of the major diastereomer catalyst-alkoxide complexes (5, 8, and 10) were unambiguously determined by variable-temperature NMR spectroscopy. The major diastereomers (5, 8, and 10) had the same absolute configuration as the major product enantiomers from the catalytic hydrogenation of 2, 3, and 4 with 1 as catalyst. The ratio of major to minor alkoxide diastereomers was similar to the ee of the catalytic hydrogenation. The catalyst-alkoxide complexes are formed at temperatures as low as -30 degrees C with no other precursors or intermediates observed by NMR showing that ketone-hydride insertion is likely not the turnover limiting step of the catalytic hydrogenation. Results from the stoichiometric hydrogenolysis of 5/6, 8/9, or 10 indicate that their formation is rapid and only partially reversible prior to the irreversible hydrogenolysis of the ruthenium-oxygen bond. The stereoselectivities of the formation and hydrogenolysis of 5/6, 8/9, and 10 sum up to equal the stereoselectivities of the respective catalytic hydrogenations of 2, 3, and 4. The rates of the hydrogenolysis were consistent with these diastereomers being true catalytic intermediates.
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13
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Liu SH, Yang SY, Lo ST, Xu Z, Ng WS, Wen TB, Zhou ZY, Lin Z, Lau CP, Jia G. Protonation Reactions of [MH(Cl)(PPh3)2(norbornadiene)] (M = Ru, Os). Organometallics 2001. [DOI: 10.1021/om010029r] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sheng Hua Liu
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, and Department of Applied Biology & Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Sheng-Yong Yang
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, and Department of Applied Biology & Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Shu Tak Lo
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, and Department of Applied Biology & Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Zhitao Xu
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, and Department of Applied Biology & Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Weng Sang Ng
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, and Department of Applied Biology & Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Ting Bin Wen
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, and Department of Applied Biology & Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Zhong Yuan Zhou
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, and Department of Applied Biology & Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Zhenyang Lin
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, and Department of Applied Biology & Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Chak Po Lau
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, and Department of Applied Biology & Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Guochen Jia
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, and Department of Applied Biology & Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
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Wiles JA, Bergens SH, Vanhessche KPM, Dobbs DA, Rautenstrauch V. Ein flexibler und effizienter Zugang zu aktiven und wohldefinierten Katalysatoren des Typs [Ru(bisphosphan)(H)(solvens)3](BF4). Angew Chem Int Ed Engl 2001. [DOI: 10.1002/1521-3757(20010302)113:5<937::aid-ange937>3.0.co;2-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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15
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Wiles JA, Bergens SH, Vanhessche KPM, Dobbs DA, Rautenstrauch V. A Versatile and High‐Yield Route to Active and Well‐Defined Catalysts [Ru(bisphosphane)(H)(solvent)
3
](BF
4
). Angew Chem Int Ed Engl 2001; 40:914-919. [DOI: 10.1002/1521-3773(20010302)40:5<914::aid-anie914>3.0.co;2-#] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2000] [Indexed: 11/06/2022]
Affiliation(s)
- Jason A. Wiles
- Department of Chemistry, University of Alberta Edmonton, AB, T6G 2G2 (Canada) Fax: (+1) 780‐492‐82‐31
| | - Steven H. Bergens
- Department of Chemistry, University of Alberta Edmonton, AB, T6G 2G2 (Canada) Fax: (+1) 780‐492‐82‐31
| | | | - Daniel A. Dobbs
- Firmenich SA, Corporate R&D Division 1211 Geneva 8 (Switzerland) Fax: (+41) 22‐780‐33‐34
| | - Valentin Rautenstrauch
- Firmenich SA, Corporate R&D Division 1211 Geneva 8 (Switzerland) Fax: (+41) 22‐780‐33‐34
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3,3'-Bis(diphenylphosphino)-1,1'-disubstituted-2,2'-biindoles: easily accessible, electron-rich, chiral diphosphine ligands for homogeneous enantioselective hydrogenation of oxoesters. J Org Chem 2000; 65:8340-7. [PMID: 11101394 DOI: 10.1021/jo001207d] [Citation(s) in RCA: 67] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Racemic (+/-)-3,3'-bis(diphenylphosphinyl)-1,1'-dimethyl-2, 2'-biindole (1c) (N-Me-2-BINPO) and (+/-)-3, 3'-bis(diphenylphosphinyl)-1,1'-bis(methoxymethyl)-2,2'-biindole (1d) (N-MOM-2-BINPO) were synthesized in satisfactory yields following a three-step reaction sequence, starting from indole. Resolution of racemic 1c and 1d was achieved through fractional crystallization of their diastereomeric adducts with optically active dibenzoyl tartaric acids, followed by alkaline decomplexation of the diastereomerically pure salts. Their trichlorosilane reduction gave enantiopure phosphines (+)- and (-)-(1a) (N-Me-2-BINP) and (+)- and (-)-(1b) (N-MOM-2-BINP). The electrochemical oxidative potential of 1a and 1b was found to be 0. 52 and 0.60 V, respectively. Both the enantiomers of (1a) were tested as ligands of Ru(II) in asymmetric hydrogenation reactions of alpha- and beta-oxoesters. Reactions were found to be outstandingly fast and enantioselection quite good. Comparative kinetic experiments on the hydrogenation reaction of methyl acetoacetate carried out with 1a, 1c, BINAP, and other biheteroaromatic diphosphines as ligands of Ru(II) demonstrated that all the reactions follow a first-order kinetic. A linear relationship was found between the kinetic constant log and the electrochemical oxidative potential of the diphosphine ligand.
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Akotsi OM, Metera K, Reid RD, McDonald R, Bergens SH. Versatile precursor to ruthenium-bis(phosphine) hydrogenation catalysts. Chirality 2000; 12:514-22. [PMID: 10824180 DOI: 10.1002/(sici)1520-636x(2000)12:5/6<514::aid-chir38>3.0.co;2-#] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The known complex trans-RuCl2(NBD)Py2 (1, NBD is norbornadiene, Py is pyridine) reacts with either (R)-BINAP ((R)-2, 2'-bis(diphenylphosphino)-1,1'-binaphthyl), (S;S)-Chiraphos ((2S;3S-(-)-2,3-bis(diphenylphosphino)butane), (S;S)-Skewphos ((2S;4S)-(-)-2,4-bis(diphenylphosphino)pentane), (R)-(S)-Josiphos ((R)-(-)-1-[(S)-2-(diphenylphosphino)ferrocenyl]ethyl-dicyclohexylpho sphine), (R;R)-Norphos ((2R;3R)-(-)-2, 3-bis(diphenylphosphino)bicyclo[2.2.1]hept-5-ene), or (R;R)-Me-DUPHOS ((-)-1,2-bis((2R;5R)-2, 5-dimethylphospholano)benzene) to generate in high yields the crystalline complexes trans-RuCl2(P-P*)Py2 (P-P* is the corresponding chiral bis(phosphine)). The complexes trans-RuCl2(P-P*)Py2 are active enantioselective hydrogenation catalysts for ketoesters and noncarboxylic olefins in the presence of small amounts of HBF4 (aq.). They are active for hydrogenation of carboxylic substrates in the presence of Et3N. Reaction of trans-RuCl2(P-P*)Py2 with (rac)-1,2-diphenylethylene-diamine (N-N*, either enantiomer) forms in good yields the corresponding compounds trans-RuCl2(P-P*)(N-N*). Representative hydrogenations with these catalysts are presented.
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Affiliation(s)
- O M Akotsi
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada
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19
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Li RX, Wong NB, Li XJ, Mak TC, Yang QC, Tin KC. Synthesis and characterization of ruthenium complexes of 1,8-bis(diphenylphosphinomethyl)naphthalene (BDNA) and their catalytic hydrogenation reactions to α,β-unsaturated aldehydes. J Organomet Chem 1998. [DOI: 10.1016/s0022-328x(98)00889-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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21
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Triply-bridged diruthenium(II) 1,4-bis(diphenylphosphino)butane (dppb) and (R)-2,2′-bis(diphenylphosphino)-1,1′-binaphthyl (binap) complexes, including structural characterisation of [(dppb) ClRu(μ-D2O)-(μ-Cl)2RuCl(dppb)], [(η2-H2) (dppb)Ru(μ-Cl)3RuCl(dppb)] and the [(dppb)ClRu(μ-Cl)3RuCl(dppb)]− anion. Inorganica Chim Acta 1998. [DOI: 10.1016/s0020-1693(97)05833-7] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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22
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MacFarlane KS, Rettig SJ, Liu Z, James BR. The co-crystallization of Ru((R)-binap)(η3-Me-allyl)2 and binap dioxide, and synthesis of Ru(Ph2P(CH2)4PPh2)(η3-Me-allyl)2. J Organomet Chem 1998. [DOI: 10.1016/s0022-328x(97)00758-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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23
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Deeming AJ, Speel DM, Stchedroff M. Trinuclear Clusters of Ruthenium-Containing Bridging and Ortho-Metalated 2,2‘-Bis(diphenylphosphino)-1,1‘-binaphthyl (BINAP): X-ray Structures of (R)-BINAP and [Ru3(μ-OH)2(CO)8{μ-(R)-BINAP}]. Organometallics 1997. [DOI: 10.1021/om970587z] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Antony J. Deeming
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K
| | - Despo M. Speel
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K
| | - Marc Stchedroff
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K
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Mashima K, Komura N, Yamagata T, Tani K, Haga Ma MA. Synthesis and Crystal Structure of a Cationic Trinuclear Ruthenium(II) Complex, [Ru(3)(&mgr;(2)-Cl)(3)(&mgr;(3)-Cl)(2){1,2-bis(diphenylphosphino)benzene}(3)]PF(6). Inorg Chem 1997; 36:2908-2912. [PMID: 11669932 DOI: 10.1021/ic961278o] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kazushi Mashima
- Coordination Chemistry Laboratories, Institute for Molecular Science, Okazaki National Institutes, Myodaiji, Okazaki 444, Japan
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Fogg DE, James BR. Chiral and Achiral Diphosphine Complexes of Ruthenium(II) Incorporating Labile Nitrile Ligands: Synthesis and Solution Chemistry of Mono- and Dinuclear Derivatives of Ru(2)Cl(4)(PP)(2) (PP = Chelating Diphosphine). Inorg Chem 1997; 36:1961-1966. [PMID: 11669804 DOI: 10.1021/ic960735y] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A family of nitrile complexes has been prepared by reaction of Ru(2)Cl(4)(PP)(2) or RuCl(2)(PP)(PPh(3)) (PP = Ph(2)P(CH(2))(4)PPh(2) (dppb), Ph(2)PCH(2)CHOCMe(2)OCHCH(2)PPh(2) (diop), 2,2'-bis(diphenylphosphino)-1,1'-binaphthyl (binap)) with MeCN or PhCN, the product formed depending strongly on the reaction conditions. At high nitrile concentrations, the principal species present is RuCl(PP)(RCN)(3)(+)X(-) (X = Cl); the cation can generally be isolated (as the PF(6) salt) by abstraction of the chloride counterion with NH(4)PF(6). Use of 2 equiv of NH(4)PF(6) generates Ru(PP)(RCN)(4)(2+)(PF(6)(-))(2) (PP = dppb). In the absence of a halide-abstracting agent, addition of hexanes or diethyl ether precipitates neutral RuCl(2)(PP)(RCN)(2) species, which undergo further loss of nitrile in the solid state (R = Me) or in solution (R = Me, Ph). Redissolution of the neutral species in chlorocarbon solvents gives Ru(2)Cl(3)(PP)(2)(RCN)(2)(+)X(-) (X = Cl) and, in benzene, Ru(2)Cl(4)(PP)(2)(RCN). The dinuclear cation (X = PF(6)) is also accessible by reaction of RuCl(PP)(RCN)(3)(+)PF(6)(-) with CH(2)Cl(2) or CDCl(3), while the mononitrile can be obtained directly by reaction of Ru(2)Cl(4)(PP)(2) or RuCl(2)(PP)(PPh(3)) with small amounts of nitrile in benzene.
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Affiliation(s)
- Deryn E. Fogg
- Department of Chemistry, The University of British Columbia, Vancouver, BC V6T 1Z1, Canada
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Benincori T, Brenna E, Sannicolò F, Trimarco L, Antognazza P, Cesarotti E, Demartin F, Pilati T. New Class of Chiral Diphosphine Ligands for Highly Efficient Transition Metal-Catalyzed Stereoselective Reactions: The Bis(diphenylphosphino) Five-membered Biheteroaryls. J Org Chem 1996; 61:6244-6251. [PMID: 11667462 DOI: 10.1021/jo960211f] [Citation(s) in RCA: 122] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The synthesis and application of three examples of a new class of chiral (C(2)) atropisomeric diphosphines characterized by two interconnected five-membered heteroaromatic rings, with hindered rotation around the interanular bond, are described. Optically pure (+)- and (-)-2,2'-bis(diphenylphosphino)-4,4',6,6'-tetramethyl-3,3'-bibenzo[b]thiophene (tetraMe-bitianp) (1a) and the parent unsubstituted system (+)- and (-)-bitianp (1b) were synthesized. They were found to be optically stable at 100 degrees C and were successfully employed as ligands in the Ru(II)-catalyzed hydrogenation of alpha- and beta-oxo esters to the corresponding alpha- and beta-hydroxy esters and in the hydrogenation of olefinic substrates. The optical and chemical yields were comparable with those reported for the same Ru(II)-binap-catalyzed reactions carried out under the same experimental conditions. The 2,2'-bis(diphenylphosphino)-3,3'-bibenzo[b]furan (1c), the oxygenated analogue of bitianp, was found to be configurationally unstable at room temperature. Complete structural X-ray elucidation of the Pd complexes of 1a-c is reported. The advantages of these biheteroaromatic ligands over the classical biaryl systems are discussed.
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Affiliation(s)
- Tiziana Benincori
- Dipartimento di Chimica Organica e Industriale, Università di Milano, e Centro CNR Sintesi Stereochimica Speciali Sistemi Organici, Via Golgi 19, I-20133 Milano, Italy, Dipartimento di Chimica Inorganica, Metallorganica e Analitica Università di Milano, e Centro CNR Sintesi e Struttura dei Composti dei Metalli di Transizione nei Bassi Stati di Ossidazione, Via Venezian 21, I-20133 Milano, Italy, Dipartimento di Chimica Strutturale e Stereochimica Inorganica, Università di Milano, Via Venezian 21, I-20133 Milano, Italy, and Centro CNR per lo Studio delle Relazioni fra Struttura e Reattività Chimica, Via Golgi 19, I-20133 Milano, Italy
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Ohta T, Tonomura Y, Nozaki K, Takaya H, Mashima K. An Anionic Dinuclear BINAP−Ruthenium(II) Complex: Crystal Structure of [NH2Et2][{RuCl((R)-p-MeO-BINAP)}2(μ-Cl)3] and Its Use in Asymmetric Hydrogenation. Organometallics 1996. [DOI: 10.1021/om9508905] [Citation(s) in RCA: 69] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tetsuo Ohta
- Department of Material Chemistry, Faculty of Engineering, Kyoto University, Yoshida, Kyoto 606-01, Japan
| | - Yoichi Tonomura
- Department of Material Chemistry, Faculty of Engineering, Kyoto University, Yoshida, Kyoto 606-01, Japan
| | - Kyoko Nozaki
- Department of Material Chemistry, Faculty of Engineering, Kyoto University, Yoshida, Kyoto 606-01, Japan
| | - Hidemasa Takaya
- Department of Material Chemistry, Faculty of Engineering, Kyoto University, Yoshida, Kyoto 606-01, Japan
| | - Kazushi Mashima
- Department of Chemistry, Faculty of Engineering Science, Osaka University, Toyonaka, Osaka 560, Japan
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Braga D, Matteoli U, Sabatino P, Scrivanti A. Synthesis and structural characterization of the tetraruthenium cluster complexes [Ru4(µ-H)4(CO)10(L–L)](L–L = diphosphine). ACTA ACUST UNITED AC 1995. [DOI: 10.1039/dt9950000419] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Mezzetti A, Tschumper A, Consiglio G. Ruthenium(II) complexes with the atropisomeric diphosphine 2,2′-bis(diphenylphosphino)-6,6′-dimethylbiphenyl in the enantioselective hydrogenation of pentane-2,4-dione. ACTA ACUST UNITED AC 1995. [DOI: 10.1039/dt9950000049] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Ungváry F. Transition metals in organic synthesis: Hydroformylation, reduction, and oxidation. Annual survey covering the year 1992. J Organomet Chem 1994. [DOI: 10.1016/0022-328x(94)88095-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Nozaki K, Yoshida M, Takaya H. Reaction rate enhancement by addition of anionic surfactant SDS in the ruthenium catalyzed hydrogen transfer from a 1,4-diol to 4-phenyl-3-buten-2-one. J Organomet Chem 1994. [DOI: 10.1016/0022-328x(94)80125-8] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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