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Cupioli E, Gaigne FJM, Sachse A, Buday P, Weigand W, Liebing P, Arndt HD. Templated Total Synthesis of Cu(I)-Methanobactin OB3b. Angew Chem Int Ed Engl 2023; 62:e202304901. [PMID: 37403384 DOI: 10.1002/anie.202304901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 07/01/2023] [Accepted: 07/04/2023] [Indexed: 07/06/2023]
Abstract
Methanobactin OB3b (Mbn-OB3b) is a unique natural product with stunning affinity for copper ions (Ka ≈Cu(I) 1034 ). Here, we report the first total synthesis of Cu(I)-bound methanobactin OB3b featuring as key transformations a cyclodehydration-thioacylation sequence, to generate the conjugated heterocyclic systems, and a copper-templated cyclization, to complete the caged structure of the very sensitive target compound.
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Affiliation(s)
- Emilia Cupioli
- Friedrich-Schiller-Universität, Institut für Organische Chemie und Makromolekulare Chemie, Humboldtstr. 10, 07743, Jena, Germany
| | - Frédéric J M Gaigne
- Friedrich-Schiller-Universität, Institut für Organische Chemie und Makromolekulare Chemie, Humboldtstr. 10, 07743, Jena, Germany
| | - Anna Sachse
- Friedrich-Schiller-Universität, Institut für Organische Chemie und Makromolekulare Chemie, Humboldtstr. 10, 07743, Jena, Germany
| | - Philipp Buday
- Friedrich-Schiller-Universität, Institut für Anorganische und Analytische Chemie, Humboldtstr. 8, 07743, Jena, Germany
| | - Wolfgang Weigand
- Friedrich-Schiller-Universität, Institut für Anorganische und Analytische Chemie, Humboldtstr. 8, 07743, Jena, Germany
| | - Phil Liebing
- Friedrich-Schiller-Universität, Institut für Anorganische und Analytische Chemie, Humboldtstr. 8, 07743, Jena, Germany
| | - Hans-Dieter Arndt
- Friedrich-Schiller-Universität, Institut für Organische Chemie und Makromolekulare Chemie, Humboldtstr. 10, 07743, Jena, Germany
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2
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Cativiela C, Ordóñez M, Viveros-Ceballos JL. Stereoselective synthesis of acyclic α,α-disubstituted α-amino acids derivatives from amino acids templates. Tetrahedron 2020. [DOI: 10.1016/j.tet.2019.130875] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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3
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Recent advances in Pd-catalyzed asymmetric addition reactions. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2020. [DOI: 10.1016/bs.adomc.2020.01.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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4
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Marra IFS, de Castro PP, Amarante GW. Recent Advances in Azlactone Transformations. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901076] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Isabella F. S. Marra
- Chemistry Department; Federal University of Juiz de Fora; José Lourenço Kelmer, São Pedro Juiz de Fora Brazil
| | - Pedro P. de Castro
- Chemistry Department; Federal University of Juiz de Fora; José Lourenço Kelmer, São Pedro Juiz de Fora Brazil
| | - Giovanni W. Amarante
- Chemistry Department; Federal University of Juiz de Fora; José Lourenço Kelmer, São Pedro Juiz de Fora Brazil
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5
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Liu MM, Yang XC, Hua YZ, Chang JB, Wang MC. Synthesis of Chiral Bispirotetrahydrofuran Oxindoles by Cooperative Bimetallic-Catalyzed Asymmetric Cascade Reaction. Org Lett 2019; 21:2111-2115. [DOI: 10.1021/acs.orglett.9b00386] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Meng-Meng Liu
- College of Chemistry and Molecular Engineering, Zhengzhou University, 100 Science Avenue, Zhengzhou, Henan 450001, People’s Republic of China
| | - Xiao-Chao Yang
- College of Chemistry and Molecular Engineering, Zhengzhou University, 100 Science Avenue, Zhengzhou, Henan 450001, People’s Republic of China
| | - Yuan-Zhao Hua
- College of Chemistry and Molecular Engineering, Zhengzhou University, 100 Science Avenue, Zhengzhou, Henan 450001, People’s Republic of China
| | - Jun-Biao Chang
- College of Chemistry and Molecular Engineering, Zhengzhou University, 100 Science Avenue, Zhengzhou, Henan 450001, People’s Republic of China
| | - Min-Can Wang
- College of Chemistry and Molecular Engineering, Zhengzhou University, 100 Science Avenue, Zhengzhou, Henan 450001, People’s Republic of China
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6
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Zheng K, Liu X, Feng X. Recent Advances in Metal-Catalyzed Asymmetric 1,4-Conjugate Addition (ACA) of Nonorganometallic Nucleophiles. Chem Rev 2018; 118:7586-7656. [PMID: 30047721 DOI: 10.1021/acs.chemrev.7b00692] [Citation(s) in RCA: 191] [Impact Index Per Article: 31.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The metal-catalyzed asymmetric conjugate addition (ACA) reaction has emerged as a general and powerful approach for the construction of optically active compounds and is among the most significant and useful reactions in synthetic organic chemistry. In recent years, great progress has been made in this area with the use of various chiral metal complexes based on different chiral ligands. This review provides comprehensive and critical information on the enantioselective 1,4-conjugate addition of nonorganometallic (soft) nucleophiles and their importance in synthetic applications. The literature is covered from the last 10 years, and a number of examples from before 2007 are included as background information. The review is divided into multiple parts according to the type of nucleophile involved in the reaction (such as C-, B-, O-, N-, S-, P-, and Si-centered nucleophiles) and metal catalyst systems used.
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Affiliation(s)
- Ke Zheng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , P. R. China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , P. R. China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , P. R. China
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7
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Balázs LB, Tay WS, Li Y, Pullarkat SA, Leung PH. Synthesis of Stereoprojecting, Chiral N-C(sp3)-E Type Pincer Complexes. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00262] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- László B. Balázs
- Division of Chemistry & Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
| | - Wee Shan Tay
- Division of Chemistry & Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
| | - Yongxin Li
- Division of Chemistry & Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
| | - Sumod A. Pullarkat
- Division of Chemistry & Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
| | - Pak-Hing Leung
- Division of Chemistry & Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
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8
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Holz J, Ayerbe García M, Frey W, Krupp F, Peters R. Diastereoselective synthesis, structure and reactivity studies of ferrocenyloxazoline gold(i) and gold(ii) complexes. Dalton Trans 2018; 47:3880-3905. [PMID: 29451574 DOI: 10.1039/c8dt00109j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
In the last few decades, gold complexes have demonstrated huge potential for soft Lewis acid catalysis. Despite the intensive research on Au complexes and planar chiral metallacycles, enantiopure ferrocenylgold complexes have - surprisingly - not been reported until the studies presented in this article. Herein, we report the asymmetric synthesis of planar chiral ferrocenyl Au(i) complexes. These dinuclear species form helically chiral ten-membered (NCCCAu)2 rings stabilized by aurophilic interactions. In supramolecular solid state structures, linear, zigzag or helical Au(i) wires with regular AuAu separations were observed. The dissolved dinuclear entities could be oxidized by Au(i) to unique ferrocenyl Au(ii) complexes featuring short Au(ii)-Au(ii) bonds, while the ferrocene core remained intact. However, our initial studies revealed the issue of configurational lability of the ferrocenyl Au(ii) complexes in terms of the element of planar chirality in the presence of the gold source, (Me2S)AuCl. This was successfully addressed by a systematic study implementing permanent σ-donor ortho-protecting groups such as methyl and trimethylsilyl, which impede an epimerization event. Oxidation of the dinuclear Au(i) complexes was also accomplished by oxidative addition reactions with halogenated solvents, preferably CHCl3. Additional reactivity studies revealed that dinuclear Au(ii) dihalide complexes are also formed with reactive alkylhalides such as iodomethane, benzylbromide and benzyliodide. Interestingly, the whole spectral range of colors (violet, blue, green, yellow, and red) is covered by the title complexes depending on the Au oxidation state and the anionic ligands in the Au(ii) complexes. This appears to be quite unusual for ferrocenes, which typically adopt orange to red colors in a non-oxidized state.
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Affiliation(s)
- Julia Holz
- Universität Stuttgart, Institut für Organische Chemie, Pfaffenwaldring 55, 70569 Stuttgart, Germany.
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9
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de Castro PP, Batista GMF, Dos Santos HF, Amarante GW. Theoretical Study on the Epimerization of Azlactone Rings: Keto-Enol Tautomerism or Base-Mediated Racemization? ACS OMEGA 2018; 3:3507-3512. [PMID: 31458601 PMCID: PMC6641619 DOI: 10.1021/acsomega.8b00060] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Accepted: 03/16/2018] [Indexed: 06/10/2023]
Abstract
Azlactones are versatile heterocycles employed in a diversity of transformations; the main drawback of these cycles consists in the epimerization of the α-carbonyl stereocenter during its preparation. We hereby present a theoretical study to explain how the racemization occurs. Two hypotheses were investigated: the keto-enol tautomerism and the base-mediated racemization, through an enolate intermediate. The results showed that the latter is consistent with the experimental data and can spontaneously occur at room temperature. The same pathway was evaluated for 2-alcoxy azlactone, showing a slower epimerization ratio, consistent with the literature data.
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Affiliation(s)
- Pedro P de Castro
- Chemistry Department, Federal University of Juiz de Fora, Campus Martelos, Juiz de Fora, Minas Gerais 36036-900, Brazil
| | - Gabriel M F Batista
- Chemistry Department, Federal University of Juiz de Fora, Campus Martelos, Juiz de Fora, Minas Gerais 36036-900, Brazil
| | - Hélio F Dos Santos
- Chemistry Department, Federal University of Juiz de Fora, Campus Martelos, Juiz de Fora, Minas Gerais 36036-900, Brazil
| | - Giovanni W Amarante
- Chemistry Department, Federal University of Juiz de Fora, Campus Martelos, Juiz de Fora, Minas Gerais 36036-900, Brazil
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10
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Unique cascade ring-opening/cyclization reaction of azlactones and DBU or DBN: Synthesis of new pyrrolam A analogues. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.01.036] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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11
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Schrapel C, Frey W, Garnier D, Peters R. Highly Enantioselective Ferrocenyl Palladacycle-Acetate Catalysed Arylation of Aldimines and Ketimines with Arylboroxines. Chemistry 2017; 23:2448-2460. [PMID: 27983770 DOI: 10.1002/chem.201605244] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Indexed: 01/02/2023]
Affiliation(s)
- Carmen Schrapel
- Institut für Organische Chemie; Universität Stuttgart; Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Wolfgang Frey
- Institut für Organische Chemie; Universität Stuttgart; Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Delphine Garnier
- Institut für Organische Chemie; Universität Stuttgart; Pfaffenwaldring 55 70569 Stuttgart Germany
| | - René Peters
- Institut für Organische Chemie; Universität Stuttgart; Pfaffenwaldring 55 70569 Stuttgart Germany
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12
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Vignesh A, Kaminsky W, Dharmaraj N. Expeditious Assembly of Fluorenones through Domino Reactions of Benzoyl Chlorides with Arylboronic Acids Catalyzed by ONO Pincer-like Palladium(II) Complexes. ChemCatChem 2016. [DOI: 10.1002/cctc.201600717] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Arumugam Vignesh
- Inorganic & Nanomaterials Research Laboratory; Department of Chemistry; Bharathiar University; Coimbatore 641 046 India
| | - Werner Kaminsky
- Department of Chemistry; University of Washington; Seattle Washington 98195 USA
| | - Nallasamy Dharmaraj
- Inorganic & Nanomaterials Research Laboratory; Department of Chemistry; Bharathiar University; Coimbatore 641 046 India
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13
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Balam-Villarreal J, Sandoval-Chávez C, Ortega-Jiménez F, Toscano R, Carreón-Castro M, López-Cortés J, Ortega-Alfaro M. Infrared irradiation or microwave assisted cross-coupling reactions using sulfur-containing ferrocenyl-palladacycles. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2016.05.017] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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14
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de Castro PP, Carpanez AG, Amarante GW. Azlactone Reaction Developments. Chemistry 2016; 22:10294-318. [PMID: 27245128 DOI: 10.1002/chem.201600071] [Citation(s) in RCA: 102] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Indexed: 11/06/2022]
Abstract
Azlactones (also known as oxazolones) are heterocycles usually employed in the stereoselective synthesis of α,α-amino acids, heterocycles and natural products. The versatility of the azlactone scaffold arises from the numerous reactive sites, allowing its application in a diversity of transformations. This review aims to cover classical and recent applications of oxazolones, especially those involving stereoselective processes. After a short introduction on their structures and intrinsic reactivities, dynamic kinetic resolution (DKR) processes as well as reactions involving stereoselective formation of a new σ C-C bond, such as alkylation/allylation/arylation, aldol, ene, Michael and Mannich reactions will be exposed. Additionally, cycloadditions, Steglich rearrangement and sulfenylation reactions will also be discussed. Recent developments of the well-known Erlenmeyer azlactones will be described. For the most examples, the proposed mechanism, activation modes and/or key reaction intermediates will be exposed to rationalize both the final product and the observed stereochemistry. Finally, this review gives an overview of the synthetic utility of oxazolones.
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Affiliation(s)
- Pedro P de Castro
- Department of Chemistry, Federal University of Juiz de Fora, José Lourenço Kelmer, São Pedro, Juiz de Fora, Brazil
| | - Arthur G Carpanez
- Department of Chemistry, Federal University of Juiz de Fora, José Lourenço Kelmer, São Pedro, Juiz de Fora, Brazil
| | - Giovanni W Amarante
- Department of Chemistry, Federal University of Juiz de Fora, José Lourenço Kelmer, São Pedro, Juiz de Fora, Brazil.
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15
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Weiss M, Holz J, Peters R. Regioselective Asymmetric Allylic Alkylation Reaction ofα-Cyanoacetates Catalyzed by a Heterobimetallic Platina-/Palladacycle. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501290] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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16
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Rieckhoff S, Hellmuth T, Peters R. Regioselective Pd-Catalyzed Synthesis of 2,3,6-Trisubstituted Pyridines from Isoxazolinones. J Org Chem 2015; 80:6822-30. [PMID: 26101943 DOI: 10.1021/acs.joc.5b01065] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Substituted pyridines are prevalent heterocycles of fundamental importance. Their efficient regioselective preparation is often still a challenge despite a large number of reported synthetic methodologies. In this letter we report an operationally simple approach that makes use of readily accessible isoxazolinones. The protocol involves a Pd(II)-catalyzed C-regioselective 1,4-addition to vinylketones, followed by a Pd(0)-catalyzed transformation, which is assumed to proceed via vinylnitrene-Pd intermediates. Both hydrogen and air are necessary for the pyridine formation step and could be employed at ratios above the upper explosive limit thus avoiding a safety issue. This new strategy allows an effective, scalable and practical access to various previously unknown 2,3,6-trisubstituted pyridines.
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Affiliation(s)
- Stefan Rieckhoff
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Tina Hellmuth
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - René Peters
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
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17
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Schrapel C, Peters R. Palladacyclus-katalysierte, hoch enantioselektive Arylierung von Iminen mit Arylboroxinen ohne Verwendung einer exogenen Base. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201501846] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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18
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Schrapel C, Peters R. Exogenous-Base-Free Palladacycle-Catalyzed Highly Enantioselective Arylation of Imines with Arylboroxines. Angew Chem Int Ed Engl 2015; 54:10289-93. [DOI: 10.1002/anie.201501846] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Revised: 04/30/2015] [Indexed: 12/18/2022]
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19
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Moritz Bauer J, Peters R. Catalytic asymmetric [3,3]-rearrangements of allylic acetimidates. Catal Sci Technol 2015. [DOI: 10.1039/c4cy01749h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The rearrangement of non-halogenated acetimidates in combination with an enzymatic amide hydrolysis is attractive to get almost enantiopure allylic amines.
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Affiliation(s)
- J. Moritz Bauer
- Institut für Organische Chemie
- Universität Stuttgart
- D-70569 Stuttgart
- Germany
| | - René Peters
- Institut für Organische Chemie
- Universität Stuttgart
- D-70569 Stuttgart
- Germany
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20
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Chiral Bimetallic Lewis Acids. TOP ORGANOMETAL CHEM 2015. [DOI: 10.1007/3418_2015_153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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21
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Hellmuth T, Frey W, Peters R. Regioselective Catalytic Asymmetric C-Alkylation of Isoxazolinones by a Base-Free Palladacycle-Catalyzed Direct 1,4-Addition. Angew Chem Int Ed Engl 2014; 54:2788-91. [DOI: 10.1002/anie.201410933] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Indexed: 12/16/2022]
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22
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Hellmuth T, Frey W, Peters R. Regioselektive katalytische asymmetrische C-Alkylierung von Isoxazolinonen durch basenfreie Palladacyclus-katalysierte direkte 1,4-Addition. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201410933] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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23
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Weiss M, Peters R. Catalytic Direct Dehydrogenative Cross-Couplings of C–H (Pro)Nucleophiles and Allylic Alcohols without an Additional Oxidant. ACS Catal 2014. [DOI: 10.1021/cs501495g] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Marcel Weiss
- Institut für Organische
Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - René Peters
- Institut für Organische
Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
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24
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Bera K, Namboothiri INN. Asymmetric Synthesis of Quaternary α-Amino Acids and Their Phosphonate Analogues. ASIAN J ORG CHEM 2014. [DOI: 10.1002/ajoc.201402178] [Citation(s) in RCA: 100] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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25
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Hao XQ, Huang JJ, Wang T, Lv J, Gong JF, Song MP. PCN pincer palladium(II) complex catalyzed enantioselective hydrophosphination of enones: synthesis of pyridine-functionalized chiral phosphine oxides as NC(sp(3))O pincer preligands. J Org Chem 2014; 79:9512-30. [PMID: 25233005 DOI: 10.1021/jo5015307] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A series of chiral PCN pincer Pd(II) complexes VI-XIII with aryl-based aminophosphine-imidazoline or phosphinite-imidazoline ligands were synthesized and characterized. They were examined as enantioselective catalysts for the hydrophosphination of enones. Among them, complex IX, which features a Ph2PO donor as well as an imidazoline donor with (4S)-phenyl and N-Tol-p groups, was found to be the optimal catalyst. Thus, in the presence of 2-5 mol % of complex IX a wide variety of enones reacted smoothly with diarylphosphines to give the corresponding chiral phosphine derivatives in high yields with enantioselectivities of up to 98% ee. In particular, heteroaryl species such as 2-thienyl-, 2-furyl-, and 2-pyridinyl-containing enones that have a strong coordination ability to the Pd center were also appropriate substrates for the current catalytic system. For example, hydrophosphination of 2-alkenoylpyridines with diphenylphosphine followed by oxidation with H2O2 afforded the corresponding pyridine-functionalized chiral phosphine oxides in good yields with good to excellent enantioselectivities (10 examples, up to 95% ee). Furthermore, it had been demonstrated that the obtained pyridine-containing phosphine oxide acted as a tridentate ligand in the reaction with PdCl2 to form an intriguing NCsp(3)O pincer Pd(II) complex via Csp(3)-H bond activation, which to our knowledge is the first example of a chiral DCsp(3)D' Pd pincer (D ≠ D'; D and D' denote donor atoms such as P, N, etc.).
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Affiliation(s)
- Xin-Qi Hao
- College of Chemistry and Molecular Engineering, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Zhengzhou University , Zhengzhou 450001, People's Republic of China
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Sudheendran M, Eitel SH, Naumann S, Buchmeiser MR, Peters R. Heterogenization of ferrocene palladacycle catalysts on ROMP-derived monolithic supports and application to a Michael addition. NEW J CHEM 2014. [DOI: 10.1039/c4nj01253d] [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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27
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Mechler M, Frey W, Peters R. Macrocyclic Salen–Bis-NHC Hybrid Ligands and Their Application to the Synthesis of Enantiopure Bi- and Trimetallic Complexes. Organometallics 2014. [DOI: 10.1021/om500762r] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Melanie Mechler
- Institut für Organische
Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Wolfgang Frey
- Institut für Organische
Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - René Peters
- Institut für Organische
Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
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28
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Hellmuth T, Rieckhoff S, Weiss M, Dorst K, Frey W, Peters R. Cooperative Bimetallic Asymmetric Catalysis: Comparison of a Planar Chiral Ruthenocene Bis-Palladacycle to the Corresponding Ferrocene. ACS Catal 2014. [DOI: 10.1021/cs500393x] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Tina Hellmuth
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Stefan Rieckhoff
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Marcel Weiss
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Konstantin Dorst
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Wolfgang Frey
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - René Peters
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
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29
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Pereira AA, de Castro PP, de Mello AC, Ferreira BR, Eberlin MN, Amarante GW. Brønsted acid catalyzed azlactone ring opening by nucleophiles. Tetrahedron 2014. [DOI: 10.1016/j.tet.2013.11.037] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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30
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Finkbeiner P, Weckenmann NM, Nachtsheim BJ. Alkynyliodonium Salt Mediated Alkynylation of Azlactones: Fast Access to Cα-Tetrasubstituted α-Amino Acid Derivatives. Org Lett 2014; 16:1326-9. [DOI: 10.1021/ol500053c] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Peter Finkbeiner
- Institut für Organische
Chemie, Eberhard Karls Universität Tübingen, Auf
der Morgenstelle 18, 72076 Tübingen, Germany
| | - Nicole M. Weckenmann
- Institut für Organische
Chemie, Eberhard Karls Universität Tübingen, Auf
der Morgenstelle 18, 72076 Tübingen, Germany
| | - Boris J. Nachtsheim
- Institut für Organische
Chemie, Eberhard Karls Universität Tübingen, Auf
der Morgenstelle 18, 72076 Tübingen, Germany
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31
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Synthesis of a cyclic isostere of α-methyl homoserine by a stereoselective acylation–alkylation sequence of a chiral γ-lactam. Amino Acids 2014; 46:1097-103. [DOI: 10.1007/s00726-014-1671-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Accepted: 01/09/2014] [Indexed: 10/25/2022]
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32
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Qiao B, Liu X, Duan S, Yan L, Jiang Z. Highly Enantioselective Organocatalytic α-Sulfenylation of Azlactones. Org Lett 2014; 16:672-5. [PMID: 24432722 DOI: 10.1021/ol403303k] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Baokun Qiao
- Institute of Chemical Biology and ‡Key Laboratory of Natural Medicine
and Immuno-Engineering
of Henan Province, Henan University, Kaifeng, Henan, China, 475004
| | - Xinfei Liu
- Institute of Chemical Biology and ‡Key Laboratory of Natural Medicine
and Immuno-Engineering
of Henan Province, Henan University, Kaifeng, Henan, China, 475004
| | - Shaobo Duan
- Institute of Chemical Biology and ‡Key Laboratory of Natural Medicine
and Immuno-Engineering
of Henan Province, Henan University, Kaifeng, Henan, China, 475004
| | - Lin Yan
- Institute of Chemical Biology and ‡Key Laboratory of Natural Medicine
and Immuno-Engineering
of Henan Province, Henan University, Kaifeng, Henan, China, 475004
| | - Zhiyong Jiang
- Institute of Chemical Biology and ‡Key Laboratory of Natural Medicine
and Immuno-Engineering
of Henan Province, Henan University, Kaifeng, Henan, China, 475004
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33
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Drusan M, Šebesta R. Enantioselective C–C and C–heteroatom bond forming reactions using chiral ferrocene catalysts. Tetrahedron 2014. [DOI: 10.1016/j.tet.2013.11.012] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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34
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Cassar DJ, Ilyashenko G, Ismail M, Woods J, Hughes DL, Richards CJ. Enantioselective synthesis and application to the allylic imidate rearrangement of amine-coordinated palladacycle catalysts of cobalt sandwich complexes. Chemistry 2013; 19:17951-62. [PMID: 24264943 PMCID: PMC4517145 DOI: 10.1002/chem.201302922] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2013] [Indexed: 11/30/2022]
Abstract
The reaction of (η(5)-(N,N-dimethylaminomethyl)cyclopentadien-yl)(η(4)-tetraphenylcyclobutadiene)cobalt with sodium tetrachloropalladate and (R)-N-acetylphenylalanine gave planar chiral palladacycle di-μ-chloridebis[(η(5)-(Sp)-2-(N,N-dimethylaminomethyl)cyclopentadienyl,1-C,3'-N)(η(4)-tetraphenylcyclobutadiene)cobalt]dipalladium [(Sp )-Me2 -CAP-Cl] in 92% ee and 64% yield. Enantiopurity (>98% ee) was achieved by purification of the monomeric (R)-proline adducts and conversion back to the chloride dimer. Treatment with AgOAc gave (Sp)-Me2-CAP-OAc which was applied to asymmetric transcyclopalladation (up to 78% ee). The (R)-N-acetylphenylalanine mediated palladation methodology was applicable also to the corresponding N,N-diethyl (82% ee, 39% yield) and pyrrolidinyl (>98% ee, 43% yield) cobalt sandwich complexes. A combination of 5 mol % of the latter [(Sp)-Pyrr-CAP-Cl] and AgNO3 (3.8 equiv) is a catalyst for the allylic imidate rearrangement of an (E)-N-aryltrifluoroacetimidate (up to 83% ee), and this catalyst system is also applicable to the rearrangement of a range of (E)-trichloroacetimidates (up to 99% ee). This asymmetric efficiency combined with the simplicity of catalyst synthesis provides accessible solutions to the generation of non-racemic allylic amine derivatives.
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Affiliation(s)
- Doyle J Cassar
- School of Chemistry, University of East Anglia, Norwich Research Park, Norwich, NR4 7TJ (UK)
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35
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Efficient synthesis of α-aryl serine derivatives via three-component reactions of aryldiazoacetates, anilines and formaldehyde. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.10.046] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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36
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Martín-Rodríguez M, Castelló LM, Nájera C, Sansano JM, Larrañaga O, de Cózar A, Cossío FP. Synthetic scope and DFT analysis of the chiral binap-gold(I) complex-catalyzed 1,3-dipolar cycloaddition of azlactones with alkenes. Beilstein J Org Chem 2013; 9:2422-33. [PMID: 24367409 PMCID: PMC3869218 DOI: 10.3762/bjoc.9.280] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Accepted: 10/18/2013] [Indexed: 11/23/2022] Open
Abstract
The 1,3-dipolar cycloaddition between glycine-derived azlactones with maleimides is efficiently catalyzed by the dimeric chiral complex [(S a)-Binap·AuTFA]2. The alanine-derived oxazolone only reacts with tert-butyl acrylate giving anomalous regiochemistry, which is explained and supported by Natural Resonance Theory and Nucleus Independent Chemical Shifts calculations. The origin of the high enantiodiscrimination observed with maleimides and tert-butyl acrylate is analyzed using DFT computed at M06/Lanl2dz//ONIOM(b3lyp/Lanl2dz:UFF) level. Several applications of these cycloadducts in the synthesis of new proline derivatives with a 2,5-trans-arrangement and in the preparation of complex fused polycyclic molecules are described.
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Affiliation(s)
- María Martín-Rodríguez
- Departamento de Química Orgánica e Instituto de Síntesis Orgánica, Universidad de Alicante, Apdo. 99, 03080-Alicante, Spain
| | - Luis M Castelló
- Departamento de Química Orgánica e Instituto de Síntesis Orgánica, Universidad de Alicante, Apdo. 99, 03080-Alicante, Spain
| | - Carmen Nájera
- Departamento de Química Orgánica e Instituto de Síntesis Orgánica, Universidad de Alicante, Apdo. 99, 03080-Alicante, Spain
| | - José M Sansano
- Departamento de Química Orgánica e Instituto de Síntesis Orgánica, Universidad de Alicante, Apdo. 99, 03080-Alicante, Spain
| | - Olatz Larrañaga
- Departamento de Química Orgánica I, Facultad de Química, Universidad del País Vasco, Apdo. 1072, E-20018 San Sebastián, Spain
| | - Abel de Cózar
- Departamento de Química Orgánica I, Facultad de Química, Universidad del País Vasco, Apdo. 1072, E-20018 San Sebastián, Spain
- IKERBASQUE, Basque Foundation for Science, 48011 Bilbao, Spain
| | - Fernando P Cossío
- Departamento de Química Orgánica I, Facultad de Química, Universidad del País Vasco, Apdo. 1072, E-20018 San Sebastián, Spain
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37
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Weber M, Frey W, Peters R. Asymmetric Palladium(II)-Catalyzed Cascade Reaction Giving Quaternary Amino Succinimides by 1,4-Addition and a Nef-Type Reaction. Angew Chem Int Ed Engl 2013; 52:13223-7. [DOI: 10.1002/anie.201307334] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2013] [Indexed: 01/25/2023]
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38
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Weber M, Frey W, Peters R. Asymmetrische Palladium(II)-katalysierte Kaskadenreaktion zu quartären Aminosuccinimiden über 1,4-Addition und eine Nef-artige Reaktion. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201307334] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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39
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Barakat A, Islam MS, Al Majid AM, Al-Othman ZA. Highly enantioselective Friedel–Crafts alkylation of indoles with α,β-unsaturated ketones with simple Cu(II)–oxazoline–imidazoline catalysts. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.04.063] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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40
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Weber M, Klein JEMN, Miehlich B, Frey W, Peters R. Monomeric Ferrocene Bis-Imidazoline Bis-Palladacycles: Variation of Pd–Pd Distances by an Interplay of Metallophilic, Dispersive, and Coulombic Interactions. Organometallics 2013. [DOI: 10.1021/om400360d] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Manuel Weber
- Institut für
Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569
Stuttgart, Germany
| | - Johannes E. M. N. Klein
- Institut für
Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569
Stuttgart, Germany
| | - Burkhard Miehlich
- Institut für
Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569
Stuttgart, Germany
| | - Wolfgang Frey
- Institut für
Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569
Stuttgart, Germany
| | - René Peters
- Institut für
Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569
Stuttgart, Germany
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41
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Weber M, Frey W, Peters R. Catalytic Asymmetric Synthesis of Spirocyclic Azlactones by a Double Michael-Addition Approach. Chemistry 2013; 19:8342-51. [DOI: 10.1002/chem.201300224] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Indexed: 12/12/2022]
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42
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Ávila EP, de Mello AC, Diniz R, Amarante GW. Brønsted Acid Catalyzed Highly Diastereoselective Michael-Type Addition of Azlactones to Enones. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300076] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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43
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Eitel SH, Jautze S, Frey W, Peters R. Asymmetric Michael additions of α-cyanoacetates by soft Lewis acid/hard Brønsted acid catalysis: stereodivergency with bi- vs. monometallic catalysts. Chem Sci 2013. [DOI: 10.1039/c3sc50419k] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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44
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Mechler M, Latendorf K, Frey W, Peters R. Homo- and Heterobimetallic Pd–, Ag–, and Ni–Hybrid Salen–Bis-NHC Complexes. Organometallics 2012. [DOI: 10.1021/om3008629] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Melanie Mechler
- Institut für
Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Katja Latendorf
- Institut für
Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Wolfgang Frey
- Institut für
Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - René Peters
- Institut für
Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
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45
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Weber M, Peters R. Pd(II)-Catalyzed Regio-, Enantio-, and Diastereoselective 1,4-Addition of Azlactones Formed in Situ From Racemic Unprotected Amino Acids and Acetic Anhydride. J Org Chem 2012. [DOI: 10.1021/jo302177t] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Manuel Weber
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569
Stuttgart, Germany
| | - René Peters
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569
Stuttgart, Germany
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46
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Weber M, Jautze S, Frey W, Peters R. Bispalladacycle-Catalyzed Michael Addition of In Situ Formed Azlactones to Enones. Chemistry 2012; 18:14792-804. [DOI: 10.1002/chem.201202455] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2012] [Indexed: 01/05/2023]
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47
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Hyodo K, Nakamura S, Shibata N. Enantioselective Aza-Morita-Baylis-Hillman Reactions of Acrylonitrile Catalyzed by Palladium(II) Pincer Complexes havingC2-Symmetric Chiral Bis(imidazoline) Ligands. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201204891] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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48
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Hyodo K, Nakamura S, Shibata N. Enantioselective Aza-Morita-Baylis-Hillman Reactions of Acrylonitrile Catalyzed by Palladium(II) Pincer Complexes havingC2-Symmetric Chiral Bis(imidazoline) Ligands. Angew Chem Int Ed Engl 2012; 51:10337-41. [DOI: 10.1002/anie.201204891] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2012] [Indexed: 12/12/2022]
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49
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Weiss M, Frey W, Peters R. Asymmetric Synthesis of Heterobimetallic Planar Chiral Ferrocene Pallada-/Platinacycles and Their Application to Enantioselective Aza-Claisen Rearrangements. Organometallics 2012. [DOI: 10.1021/om300600v] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Marcel Weiss
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring
55, D-70569 Stuttgart, Germany
| | - Wolfgang Frey
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring
55, D-70569 Stuttgart, Germany
| | - René Peters
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring
55, D-70569 Stuttgart, Germany
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