1
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Zhao S, Peters BBC, Zhang H, Xue R, Yang Y, Wu L, Huang T, He L, Andersson PG, Zhou T. Asymmetric and Chemoselective Iridium Catalyzed Hydrogenation of Conjugated Unsaturated Oxime Ethers. Chemistry 2024; 30:e202401333. [PMID: 38779790 DOI: 10.1002/chem.202401333] [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: 04/03/2024] [Revised: 05/19/2024] [Accepted: 05/21/2024] [Indexed: 05/25/2024]
Abstract
Research on the chemoselective metal-catalyzed hydrogenation of conjugated π-systems has mostly been focussed on enones. Herein, we communicate the understudied asymmetric hydrogenation of enimines catalyzed by N,P-iridium complexes and chemoselective toward the alkene. A number of enoxime ethers underwent hydrogenation smoothly to yield the desired products in high yield and stereopurity (up to 99 % yield, up to 99 % ee). No hydrogenation of the C=N π-bond was observed under the applied reaction conditions (20 bar H2, rt, DCM). It was demonstrated that the chiral oxime ether could be hydrolyzed into the ketone with complete preservation of the installed stereogenity at the α-carbon. At last, a binding mode of the substrate to the active iridium catalyst and the consequence for the stereoselective outcome was proposed.
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Affiliation(s)
- Shaohu Zhao
- College of Chemistry and Chemical Engineering, & Institute for Carbon Neutrality, Southwest Petroleum University, Chengdu, Sichuan, 610500, China
| | - Bram B C Peters
- Department of Organic Chemistry, Stockholm University, Svante Arrhenius väg 16 C, Stockholm, SE-10691, Sweden
| | - Haili Zhang
- College of Chemistry and Chemical Engineering, & Institute for Carbon Neutrality, Southwest Petroleum University, Chengdu, Sichuan, 610500, China
| | - Ruize Xue
- College of Chemistry and Chemical Engineering, & Institute for Carbon Neutrality, Southwest Petroleum University, Chengdu, Sichuan, 610500, China
| | - Yixin Yang
- College of Chemistry and Chemical Engineering, & Institute for Carbon Neutrality, Southwest Petroleum University, Chengdu, Sichuan, 610500, China
| | - Liuying Wu
- College of Chemistry and Chemical Engineering, & Institute for Carbon Neutrality, Southwest Petroleum University, Chengdu, Sichuan, 610500, China
| | - Tianrui Huang
- College of Chemistry and Chemical Engineering, & Institute for Carbon Neutrality, Southwest Petroleum University, Chengdu, Sichuan, 610500, China
| | - Lei He
- Tianfu Yongxing Laboratory, Chengdu, Sichuan, 610000, China
| | - Pher G Andersson
- Department of Organic Chemistry, Stockholm University, Svante Arrhenius väg 16 C, Stockholm, SE-10691, Sweden
- School of Chemistry and Physics, University of Kwazulu-Natal, Private Bag X54001, Durban, 4000, South Africa
| | - Taigang Zhou
- College of Chemistry and Chemical Engineering, & Institute for Carbon Neutrality, Southwest Petroleum University, Chengdu, Sichuan, 610500, China
- Tianfu Yongxing Laboratory, Chengdu, Sichuan, 610000, China
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2
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Faiges J, Biosca M, Pericàs MA, Besora M, Pàmies O, Diéguez M. Unlocking the Asymmetric Hydrogenation of Tetrasubstituted Acyclic Enones. Angew Chem Int Ed Engl 2024; 63:e202315872. [PMID: 38093613 DOI: 10.1002/anie.202315872] [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: 10/20/2023] [Indexed: 12/30/2023]
Abstract
Asymmetric hydrogenation (AH) of tetrasubstituted olefins generating two stereocenters is still an open topic. There are only a few reports on the AH of tetrasubstituted olefins with conjugated functional groups, while this process can create useful intermediates for the subsequent elaboration of relevant end products. Most of the tetrasubstituted olefins successfully submitted to AH belong to a small number of functional classes; remarkably, the AH of tetrasubstituted acyclic enones still represents an unsolved challenge. Herein, we disclose a class of air-stable Ir-P,N catalysts, prepared in three steps from commercially available amino alcohols, that can hydrogenate, in minutes, a wide range of electronically and sterically diverse acyclic tetrasubstituted enones (including exocyclic ones) with high yields and high enantioselectivities. The factors responsible for the excellent selectivities were elucidated by combining deuterogenation experiments and theoretical calculations. The calculations indicated that the reduction follows an IrI /IrIII mechanism, in which enantioselectivity is controlled in the first migratory insertion of the hydride to the most electrophilic olefinic Cβ and the formation of the hydrogenated product via reductive elimination takes place prior to the coordination of dihydrogen and the subsequent oxidative addition. The potential of the new catalytic systems is demonstrated by the derivatization of hydrogenation products.
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Affiliation(s)
- Jorge Faiges
- Universitat Rovira i Virgili, Departament de Química Física i Inorgànica, C/Marcel⋅lí Domingo, 1, 43007, Tarragona, Spain
| | - Maria Biosca
- Universitat Rovira i Virgili, Departament de Química Física i Inorgànica, C/Marcel⋅lí Domingo, 1, 43007, Tarragona, Spain
| | - Miquel A Pericàs
- Universitat Rovira i Virgili, Departament de Química Física i Inorgànica, C/Marcel⋅lí Domingo, 1, 43007, Tarragona, Spain
| | - Maria Besora
- Universitat Rovira i Virgili, Departament de Química Física i Inorgànica, C/Marcel⋅lí Domingo, 1, 43007, Tarragona, Spain
| | - Oscar Pàmies
- Universitat Rovira i Virgili, Departament de Química Física i Inorgànica, C/Marcel⋅lí Domingo, 1, 43007, Tarragona, Spain
| | - Montserrat Diéguez
- Universitat Rovira i Virgili, Departament de Química Física i Inorgànica, C/Marcel⋅lí Domingo, 1, 43007, Tarragona, Spain
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3
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Liu Y, Ma T, Guo Z, Zhou L, Liu G, He Y, Ma L, Gao J, Bai J, Hollmann F, Jiang Y. Asymmetric α-benzylation of cyclic ketones enabled by concurrent chemical aldol condensation and biocatalytic reduction. Nat Commun 2024; 15:71. [PMID: 38167391 PMCID: PMC10761851 DOI: 10.1038/s41467-023-44452-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 12/13/2023] [Indexed: 01/05/2024] Open
Abstract
Chemoenzymatic cascade catalysis has emerged as a revolutionary tool for streamlining traditional retrosynthetic disconnections, creating new possibilities for the asymmetric synthesis of valuable chiral compounds. Here we construct a one-pot concurrent chemoenzymatic cascade by integrating organobismuth-catalyzed aldol condensation with ene-reductase (ER)-catalyzed enantioselective reduction, enabling the formal asymmetric α-benzylation of cyclic ketones. To achieve this, we develop a pair of enantiocomplementary ERs capable of reducing α-arylidene cyclic ketones, lactams, and lactones. Our engineered mutants exhibit significantly higher activity, up to 37-fold, and broader substrate specificity compared to the parent enzyme. The key to success is due to the well-tuned hydride attack distance/angle and, more importantly, to the synergistic proton-delivery triade of Tyr28-Tyr69-Tyr169. Molecular docking and density functional theory (DFT) studies provide important insights into the bioreduction mechanisms. Furthermore, we demonstrate the synthetic utility of the best mutants in the asymmetric synthesis of several key chiral synthons.
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Affiliation(s)
- Yunting Liu
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130, China
| | - Teng Ma
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130, China
| | - Zhongxu Guo
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130, China
| | - Liya Zhou
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130, China
| | - Guanhua Liu
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130, China
| | - Ying He
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130, China
| | - Li Ma
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130, China
| | - Jing Gao
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130, China
| | - Jing Bai
- College of Food Science and Biology, Hebei University of Science & Technology, Shijiazhuang, 050018, China
| | - Frank Hollmann
- Department of Biotechnology, Delft University of Technology, 2629 HZ, Delft, The Netherlands.
| | - Yanjun Jiang
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130, China.
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4
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Zheng J, Peters BBC, Jiang W, Suàrez LA, Ahlquist MSG, Singh T, Andersson PG. The Effect of Conformational Freedom vs Restriction on the Rate in Asymmetric Hydrogenation: Iridium-Catalyzed Regio- and Enantioselective Monohydrogenation of Dienones. Chemistry 2023:e202303406. [PMID: 38109038 DOI: 10.1002/chem.202303406] [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: 10/16/2023] [Revised: 12/14/2023] [Accepted: 12/18/2023] [Indexed: 12/19/2023]
Abstract
Transition metal-catalyzed asymmetric hydrogenation constitutes an efficient strategy for the preparation of chiral molecules. When dienes are subjected to hydrogenation, control over regioselectivity still presents a large challenge and the fully saturated alkane is often yielded. A few successful monohydrogenations of dienes have been reported, but hitherto these are only efficient for dienes comprised of two distinctly different olefins. Herein, the reactivity of a conjugated carbonyl compound as a function of their conformational freedom is studied, based on a combined experimental and theoretical approach. It was found that alkenes in the (s)-cis conformation experience a large rate acceleration while (s)-trans restrained alkenes undergo hydrogenation slowly. Ultimately, this reactivity aspect was exploited in a novel method for the monohydrogenation of dienes based on conformational restriction ((s)-cis vs (s)-trans). This mode of discrimination conceptually differs from existing monohydrogenations and dienones constructed of two olefins similar in nature could efficiently be hydrogenated to the chiral alkene (up to 99 % ee). The extent of regioselection is even powerful enough to overcome the conventional reactivity order of substituted olefins (di>tri>tetra). This high yielding and atom-economical protocol provides an interesting opportunity to instal a stereogenic center on a carbocycle, while leaving a synthetically useful alkene untouched.
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Affiliation(s)
- Jia Zheng
- Department of Organic Chemistry, Stockholm University, 10691, Stockholm, Sweden
| | - Bram B C Peters
- Department of Organic Chemistry, Stockholm University, 10691, Stockholm, Sweden
| | - Wei Jiang
- Department of Organic Chemistry, Stockholm University, 10691, Stockholm, Sweden
| | - Lluís Artús Suàrez
- School of Biotechnology, KTH Royal Institute of Technology, 10691, Stockholm, Sweden
| | - Mårten S G Ahlquist
- School of Biotechnology, KTH Royal Institute of Technology, 10691, Stockholm, Sweden
| | - Thishana Singh
- School of Chemistry and Physics, University of Kwazulu-Natal, Private Bag X54001, 4000, Durban, South Africa
| | - Pher G Andersson
- Department of Organic Chemistry, Stockholm University, 10691, Stockholm, Sweden
- School of Chemistry and Physics, University of Kwazulu-Natal, Private Bag X54001, 4000, Durban, South Africa
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5
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Han Z, Feng X, Du H. Asymmetric Hydrogenations of Acyclic α,β-Unsaturated Ketones with Chiral Frustrated Lewis Pairs (FLPs). J Org Chem 2023; 88:16038-16042. [PMID: 37935680 DOI: 10.1021/acs.joc.3c02031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
Abstract
In this paper, we demonstrate a metal-free asymmetric hydrogenation of acyclic α,β-unsaturated ketones under the catalysis of a frustrated Lewis pair (FLP) comprising chiral oxazoline and achiral borane. A wide range of optically active α-substituted ketones were furnished in high yields with 26-85% ee's.
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Affiliation(s)
- Zaiqi Han
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- College of Pharmacy, Jilin Medical University, Jilin 132013, China
| | - Xiangqing Feng
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Haifeng Du
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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6
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Guan J, Chen J, Luo Y, Guo L, Zhang W. Copper-Catalyzed Chemoselective Asymmetric Hydrogenation of C=O Bonds of Exocyclic α,β-Unsaturated Pentanones. Angew Chem Int Ed Engl 2023; 62:e202306380. [PMID: 37307027 DOI: 10.1002/anie.202306380] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 06/11/2023] [Accepted: 06/12/2023] [Indexed: 06/13/2023]
Abstract
A highly chemoselective earth-abundant transition metal copper catalyzed asymmetric hydrogenation of C=O bonds of exocyclic α,β-unsaturated pentanones was realized using H2 . The desired products were obtained with up to 99 % yield and 96 % ee (enantiomeric excess) (99 % ee, after recrystallization). The corresponding chiral exocyclic allylic pentanol products can be converted into several bioactive molecules. The hydrogenation mechanism was investigated via deuterium-labelling experiments and control experiments, which indicate that the keto-enol isomerization rate of the substrate is faster than that of the hydrogenation and also show that the Cu-H complex can only catalyze chemoselectively the asymmetric reduction of the carbonyl group. Computational results indicate that the multiple attractive dispersion interactions (MADI effect) between the catalyst with bulky substituents and substrate play important roles which stabilize the transition states and reduce the generation of by-products.
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Affiliation(s)
- Jing Guan
- Frontier Science Center for Transformative Molecules, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University 800 Dongchuan Road, Shanghai, 200240, P. R. China
| | - Jianzhong Chen
- Frontier Science Center for Transformative Molecules, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University 800 Dongchuan Road, Shanghai, 200240, P. R. China
| | - Yicong Luo
- Frontier Science Center for Transformative Molecules, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University 800 Dongchuan Road, Shanghai, 200240, P. R. China
| | - Lisen Guo
- Frontier Science Center for Transformative Molecules, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University 800 Dongchuan Road, Shanghai, 200240, P. R. China
| | - Wanbin Zhang
- Frontier Science Center for Transformative Molecules, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University 800 Dongchuan Road, Shanghai, 200240, P. R. China
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7
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Chen XY, Tang Y, Xiang X, Tang Y, Huang M, Zheng S, Yang C. Green One-Pot Syntheses of 2-Sulfoximidoyl-3,6-dibromo Indoles Using N-Br Sulfoximines as Both Brominating and Sulfoximinating Reagents. Molecules 2023; 28:molecules28083380. [PMID: 37110617 PMCID: PMC10146707 DOI: 10.3390/molecules28083380] [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: 03/07/2023] [Revised: 03/27/2023] [Accepted: 03/29/2023] [Indexed: 04/29/2023] Open
Abstract
A green one-pot 2,3,6-trifunctionalization of N-alkyl/aryl indoles was achieved by adding three equivalents of N-Br sulfoximine to the indole solution. A variety of 2-sulfoximidoyl-3,6-dibromo indoles were prepared with 38-94% yields using N-Br sulfoximines as both brominating and sulfoximinating reagents. Based on the results of controlled experiments, we propose that a radical substitution involving 3,6-dibromination and 2-sulfoximination occurs in the reaction process. This is first time that 2,3,6-trifunctionalization of indole in one pot has been achieved.
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Affiliation(s)
- Xiao Yun Chen
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China
| | - Yaonan Tang
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China
| | - Xinran Xiang
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China
| | - Yisong Tang
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China
| | - Mingyang Huang
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China
| | - Shaojun Zheng
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China
| | - Cuifeng Yang
- Modern Chemistry Research Institute of Xi'an, Xi'an 710065, China
- State Key Laboratory of Fluorine & Nitrogen Chemicals, Xi'an 710065, China
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8
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Zhang R, Xu S, Luo Z, Liu Y, Zhang J. Enantiodivergent Hydrogenation of Exocyclic α,β-Unsaturated Lactams Enabled by Switching the N-Chirality of Iridium Catalyst. Angew Chem Int Ed Engl 2023; 62:e202213600. [PMID: 36629743 DOI: 10.1002/anie.202213600] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 01/06/2023] [Accepted: 01/09/2023] [Indexed: 01/12/2023]
Abstract
Central chirality is an important chiral element used in the design of chiral ligands and catalysts. Mostly, the attention of organic chemists is focused on developing of chiral ligands with stable stereogenic centers. However, the N-chirality in chiral ligand design has been rarely explored due to its flexibility. Here we demonstrate the design, synthesis, and application of a class of simple P,N-ligands with flexible N-chirality and their derived iridium complexes with fixed N-chiral stereocenters. Both fixed configurations of the N-stereocenter of the iridium complexes could be selectively formed from the same chiral ligand. This pair of diastereoisomeric iridium complexes showed good performance in the enantiodivergent asymmetric hydrogenation of exocyclic α,β-unsaturated lactams. The N-H group plays an impressive role in catalytic activity. Computational studies emphasized the importance of N-chirality and N-H group.
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Affiliation(s)
- Ronghua Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China
| | - Shan Xu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China
| | - Zhou Luo
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China
| | - Yuanyuan Liu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China
| | - Junliang Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China.,Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200438, China
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9
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Biosca M, de la Cruz-Sánchez P, Faiges J, Margalef J, Salomó E, Riera A, Verdaguer X, Ferré J, Maseras F, Besora M, Pàmies O, Diéguez M. P-Stereogenic Ir-MaxPHOX: A Step toward Privileged Catalysts for Asymmetric Hydrogenation of Nonchelating Olefins. ACS Catal 2023; 13:3020-3035. [PMID: 36910869 PMCID: PMC9990153 DOI: 10.1021/acscatal.2c05579] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 01/17/2023] [Indexed: 02/16/2023]
Abstract
The Ir-MaxPHOX-type catalysts demonstrated high catalytic performance in the hydrogenation of a wide range of nonchelating olefins with different geometries, substitution patterns, and degrees of functionalization. These air-stable and readily available catalysts have been successfully applied in the asymmetric hydrogenation of di-, tri-, and tetrasubstituted olefins (ee's up to 99%). The combination of theoretical calculations and deuterium labeling experiments led to the uncovering of the factors responsible for the enantioselectivity observed in the reaction, allowing the rationalization of the most suitable substrates for these Ir-catalysts.
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Affiliation(s)
- Maria Biosca
- Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, C/Marcel·lí Domingo, 1, 43007 Tarragona, Spain
| | - Pol de la Cruz-Sánchez
- Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, C/Marcel·lí Domingo, 1, 43007 Tarragona, Spain
| | - Jorge Faiges
- Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, C/Marcel·lí Domingo, 1, 43007 Tarragona, Spain
| | - Jèssica Margalef
- Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, C/Marcel·lí Domingo, 1, 43007 Tarragona, Spain
| | - Ernest Salomó
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology (BIST), C/Baldiri Reixac, 10, 08028 Barcelona, Spain
| | - Antoni Riera
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology (BIST), C/Baldiri Reixac, 10, 08028 Barcelona, Spain.,Departament de Química Inorgànica i Orgànica, Secció Química Orgànica, Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain
| | - Xavier Verdaguer
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology (BIST), C/Baldiri Reixac, 10, 08028 Barcelona, Spain.,Departament de Química Inorgànica i Orgànica, Secció Química Orgànica, Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain
| | - Joan Ferré
- Departament de Química Analítica i Química Orgànica, Universitat Rovira i Virgili, C/Marcel·lí Domingo, 1, 43007 Tarragona, Spain
| | - Feliu Maseras
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Avenida Països Catalans 16, 43007 Tarragona, Spain
| | - Maria Besora
- Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, C/Marcel·lí Domingo, 1, 43007 Tarragona, Spain
| | - Oscar Pàmies
- Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, C/Marcel·lí Domingo, 1, 43007 Tarragona, Spain
| | - Montserrat Diéguez
- Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, C/Marcel·lí Domingo, 1, 43007 Tarragona, Spain
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10
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Stereodivergently asymmetric synthesis of chiral phosphorus compounds by synergistic combination of ion-pair catalyst and base. Sci China Chem 2022. [DOI: 10.1007/s11426-022-1337-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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11
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Saudan CM, Berrocosa A, Quintaine J, Spoehrle S, Maggi L, Mosimann H, Saudan L. Highly Selective Rhodium Catalyzed 1,4‐Hydrogenation of Conjugated Dienals. ChemCatChem 2022. [DOI: 10.1002/cctc.202200671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | | | | | | | | | | | - Lionel Saudan
- FIRMENICH Research & Development 7 rue de la Bergère 1242 Satigny SWITZERLAND
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12
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Peters BBC, Zheng J, Krajangsri S, Andersson PG. Stereoselective Iridium-N,P-Catalyzed Double Hydrogenation of Conjugated Enones to Saturated Alcohols. J Am Chem Soc 2022; 144:8734-8740. [PMID: 35511116 PMCID: PMC9121388 DOI: 10.1021/jacs.2c02422] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
![]()
Asymmetric hydrogenation
of prochiral substrates such as ketones
and olefins constitutes an important instrument for the construction
of stereogenic centers, and a multitude of catalytic systems have
been developed for this purpose. However, due to the different nature
of the π-system, the hydrogenation of olefins and ketones is
normally catalyzed by different metal complexes. Herein, a study on
the effect of additives on the Ir-N,P-catalyzed hydrogenation of enones
is described. The combination of benzamide and the development of
a reactive catalyst unlocked a novel reactivity mode of Crabtree-type
complexes toward C=O bond hydrogenation. The role of benzamide
is suggested to extend the lifetime of the dihydridic iridium intermediate,
which is prone to undergo irreversible trimerization, deactivating
the catalyst. This unique reactivity is then coupled with C=C
bond hydrogenation for the facile installation of two contiguous stereogenic
centers in high yield and stereoselectivity (up to 99% ee, 99/1 d.r.) resulting in a highly stereoselective reduction of enones.
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Affiliation(s)
- Bram B C Peters
- Department of Organic Chemistry, Stockholm University, Svante Arrhenius väg 16C, SE-10691Stockholm, Sweden
| | - Jia Zheng
- Department of Organic Chemistry, Stockholm University, Svante Arrhenius väg 16C, SE-10691Stockholm, Sweden
| | - Suppachai Krajangsri
- Department of Organic Chemistry, Stockholm University, Svante Arrhenius väg 16C, SE-10691Stockholm, Sweden
| | - Pher G Andersson
- Department of Organic Chemistry, Stockholm University, Svante Arrhenius väg 16C, SE-10691Stockholm, Sweden.,School of Chemistry and Physics, University of Kwazulu-Natal, Private Bag X54001, 4000Durban, South Africa
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13
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Jian K, Li B, Zhu S, Xuan Q, Song Q. Chemoselective reduction of α,β-unsaturated ketones to allylic alcohols under catalyst-free conditions. Org Chem Front 2022. [DOI: 10.1039/d1qo01754c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A strategy of chemoselective reduction of α, β-unsaturated ketones was developed in our group. H3N·BH3 would prefer to coordinate with CO bond, forming six-membered ring, and ketones were hydrogenated via concerted double-hydrogen-transfer process.
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Affiliation(s)
- Kaixia Jian
- Institute of Next Generation Matter Transformation, College of Material Sciences Engineering at Huaqiao University, 668 Jimei Boulevard, Xiamen, Fujian, 361021, China
| | - Bingnan Li
- Institute of Next Generation Matter Transformation, College of Material Sciences Engineering at Huaqiao University, 668 Jimei Boulevard, Xiamen, Fujian, 361021, China
| | - Shuxian Zhu
- Institute of Next Generation Matter Transformation, College of Material Sciences Engineering at Huaqiao University, 668 Jimei Boulevard, Xiamen, Fujian, 361021, China
| | - Qingqing Xuan
- Institute of Next Generation Matter Transformation, College of Material Sciences Engineering at Huaqiao University, 668 Jimei Boulevard, Xiamen, Fujian, 361021, China
| | - Qiuling Song
- Institute of Next Generation Matter Transformation, College of Material Sciences Engineering at Huaqiao University, 668 Jimei Boulevard, Xiamen, Fujian, 361021, China
- Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, Guangdong, China
- State Key Laboratory of Organometallic Chemistry and Key Laboratory of Organo-fluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007
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14
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Li W, Yang T, Song N, Li R, Long J, He L, Zhang X, Lv H. Ir/f-Ampha complex catalyzed asymmetric sequential hydrogenation of enones: a general access to chiral alcohols with two contiguous chiral centers. Chem Sci 2022; 13:1808-1814. [PMID: 35282638 PMCID: PMC8826950 DOI: 10.1039/d1sc05963g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 01/17/2022] [Indexed: 12/13/2022] Open
Abstract
A general and highly efficient method for asymmetric sequential hydrogenation of α,β-unsaturated ketones has been developed by using an iridium/f-Ampha complex as the catalyst, furnishing corresponding chiral alcohols with two contiguous stereocenters in high yields with excellent diastereo- and enantioselectivities (up to 99% yield, >20 : 1 dr and >99% ee). Control experiments indicated that the C
Created by potrace 1.16, written by Peter Selinger 2001-2019
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C and CO bonds of the enones were hydrogenated sequentially, and the final stereoselectivities were determined by the dynamic kinetic resolution of ketones. Moreover, DFT calculations revealed that an outer sphere pathway was involved in both reduction of CC and CO bonds of enones. The synthetic utility of this method was demonstrated by a gram-scale reaction with very low catalyst loading (S/C = 20 000) and a concise synthetic route to key chiral intermediates of the antiasthmatic drug CP-199,330. A general and efficient method for asymmetric sequential hydrogenation of α,β-unsaturated ketones has been developed. A dynamic kinetic resolution and an outer sphere pathway were involved in this transformation.![]()
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Affiliation(s)
- Wendian Li
- Sauvage Center for Molecular Sciences, Key Laboratory of Biomedical Polymers of Ministry of Education & College of Chemistry and Molecular Sciences, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Hubei Key Lab on Organic and Polymeric Optoelectronic Materials, Wuhan University, Wuhan, Hubei 430072, China
- China Tobacco Sichuan Industrial Company, Ltd., Chengdu, Sichuan, 610065, China
| | - Tilong Yang
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, P. R. China
| | - Nan Song
- Sauvage Center for Molecular Sciences, Key Laboratory of Biomedical Polymers of Ministry of Education & College of Chemistry and Molecular Sciences, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Hubei Key Lab on Organic and Polymeric Optoelectronic Materials, Wuhan University, Wuhan, Hubei 430072, China
| | - Ruihao Li
- Sauvage Center for Molecular Sciences, Key Laboratory of Biomedical Polymers of Ministry of Education & College of Chemistry and Molecular Sciences, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Hubei Key Lab on Organic and Polymeric Optoelectronic Materials, Wuhan University, Wuhan, Hubei 430072, China
| | - Jiao Long
- Sauvage Center for Molecular Sciences, Key Laboratory of Biomedical Polymers of Ministry of Education & College of Chemistry and Molecular Sciences, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Hubei Key Lab on Organic and Polymeric Optoelectronic Materials, Wuhan University, Wuhan, Hubei 430072, China
| | - Lin He
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Xinjiang Uygur Autonomous Region, 832000, China
| | - Xumu Zhang
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, P. R. China
| | - Hui Lv
- Sauvage Center for Molecular Sciences, Key Laboratory of Biomedical Polymers of Ministry of Education & College of Chemistry and Molecular Sciences, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Hubei Key Lab on Organic and Polymeric Optoelectronic Materials, Wuhan University, Wuhan, Hubei 430072, China
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15
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Al‐Rifai NM, Mubarak MS. α‐Substituted Chalcones: A Key Review. ChemistrySelect 2021. [DOI: 10.1002/slct.202103325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Nafisah M. Al‐Rifai
- Pharmaceutical and chemical engineering department School of Medical Sciences German-Jordanian University, P.O. Box 35247 Amman 111800 Jordan
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16
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Boyt SM, Jenek NA, Sanderson HJ, Kociok-Köhn G, Hintermair U. Synthesis of a Tetraphenyl-Substituted Dihydropentalene and Its Alkali Metal Hydropentalenide and Pentalenide Complexes. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00495] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Stuart M. Boyt
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K
| | - Niko A. Jenek
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K
| | - Hugh J. Sanderson
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K
| | - Gabriele Kociok-Köhn
- Material and Chemical Characterisation Facility, University of Bath, Claverton Down, Bath BA2 7AY, U.K
| | - Ulrich Hintermair
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K
- Centre for Sustainable & Circular Technologies, University of Bath, Claverton Down, Bath BA2 7AY, U.K
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17
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Evolution in heterodonor P-N, P-S and P-O chiral ligands for preparing efficient catalysts for asymmetric catalysis. From design to applications. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.214120] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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18
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Faiges J, Borràs C, Pastor IM, Pàmies O, Besora M, Diéguez M. Density Functional Theory-Inspired Design of Ir/P,S-Catalysts for Asymmetric Hydrogenation of Olefins. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jorge Faiges
- Universitat Rovira i Virgili. Departament de Química Física i Inorgànica, C/ Marcel·lí Domingo, 1, Tarragona 43007, Spain
| | - Carlota Borràs
- Universitat Rovira i Virgili. Departament de Química Física i Inorgànica, C/ Marcel·lí Domingo, 1, Tarragona 43007, Spain
| | - Isidro M. Pastor
- Organic Chemistry Department and Instituto de Síntesis Orgánica (ISO), University of Alicante, Apdo. 99, Alicante 03080, Spain
| | - Oscar Pàmies
- Universitat Rovira i Virgili. Departament de Química Física i Inorgànica, C/ Marcel·lí Domingo, 1, Tarragona 43007, Spain
| | - Maria Besora
- Universitat Rovira i Virgili. Departament de Química Física i Inorgànica, C/ Marcel·lí Domingo, 1, Tarragona 43007, Spain
| | - Montserrat Diéguez
- Universitat Rovira i Virgili. Departament de Química Física i Inorgànica, C/ Marcel·lí Domingo, 1, Tarragona 43007, Spain
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19
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Margalef J, Biosca M, Cruz‐Sánchez P, Caldentey X, Rodríguez‐Escrich C, Pàmies O, Pericàs MA, Diéguez M. Indene Derived Phosphorus‐Thioether Ligands for the Ir‐Catalyzed Asymmetric Hydrogenation of Olefins with Diverse Substitution Patterns and Different Functional Groups. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100069] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Jèssica Margalef
- Departament de Química Física i Inorgànica Universitat Rovira i Virgili C/Marcel⋅lí Domingo 1 43007 Tarragona Spain Phone
| | - Maria Biosca
- Departament de Química Física i Inorgànica Universitat Rovira i Virgili C/Marcel⋅lí Domingo 1 43007 Tarragona Spain Phone
| | - Pol Cruz‐Sánchez
- Departament de Química Física i Inorgànica Universitat Rovira i Virgili C/Marcel⋅lí Domingo 1 43007 Tarragona Spain Phone
| | - Xisco Caldentey
- Institute of Chemical Research of Catalonia (ICIQ) The Barcelona Institute of Science and Technology Av Països Catalans 16 43007 Tarragona Spain Phone
| | - Carles Rodríguez‐Escrich
- Institute of Chemical Research of Catalonia (ICIQ) The Barcelona Institute of Science and Technology Av Països Catalans 16 43007 Tarragona Spain Phone
| | - Oscar Pàmies
- Departament de Química Física i Inorgànica Universitat Rovira i Virgili C/Marcel⋅lí Domingo 1 43007 Tarragona Spain Phone
| | - Miquel A. Pericàs
- Institute of Chemical Research of Catalonia (ICIQ) The Barcelona Institute of Science and Technology Av Països Catalans 16 43007 Tarragona Spain Phone
- Departament de Química Inorgànica i Orgànica, Universitat de Barcelona 08028 Barcelona Spain
| | - Montserrat Diéguez
- Departament de Química Física i Inorgànica Universitat Rovira i Virgili C/Marcel⋅lí Domingo 1 43007 Tarragona Spain Phone
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20
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Lu D, Lu P, Lu Z. Cobalt‐Catalyzed Asymmetric 1,4‐Reduction of
β,β‐
Dialkyl
α
,
β
‐Unsaturated Esters with PMHS. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100856] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Dongpo Lu
- Department of Chemistry Zhejiang University Hangzhou 310058 China
| | - Peng Lu
- Department of Chemistry Zhejiang University Hangzhou 310058 China
| | - Zhan Lu
- Department of Chemistry Zhejiang University Hangzhou 310058 China
- College of Chemistry Zhengzhou University Zhengzhou 450001 China
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education Hangzhou Normal University Hangzhou 310058 China
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21
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Mizutani H, Kawanishi R, Shibatomi K. Enantioselective decarboxylative protonation and deuteration of β-ketocarboxylic acids. Chem Commun (Camb) 2021; 57:6676-6679. [PMID: 34132257 DOI: 10.1039/d1cc01610e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Enantioselective decarboxylative protonation of tetralone-derived β-ketocarboxylic acids was achieved with up to 89% enantiomeric excess (ee)-in the presence of a chiral primary amine catalyst. Furthermore, this method was applied to enantioselective deuteration to afford the corresponding α-deuterioketones with up to 88% ee.
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Affiliation(s)
- Haruna Mizutani
- Department of Applied Chemistry and Life Science, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku-cho, Toyohashi 441-8580, Japan.
| | - Ryouta Kawanishi
- Department of Applied Chemistry and Life Science, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku-cho, Toyohashi 441-8580, Japan.
| | - Kazutaka Shibatomi
- Department of Applied Chemistry and Life Science, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku-cho, Toyohashi 441-8580, Japan.
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22
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Connon R, Roche B, Rokade BV, Guiry PJ. Further Developments and Applications of Oxazoline-Containing Ligands in Asymmetric Catalysis. Chem Rev 2021; 121:6373-6521. [PMID: 34019404 PMCID: PMC8277118 DOI: 10.1021/acs.chemrev.0c00844] [Citation(s) in RCA: 63] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Indexed: 12/27/2022]
Abstract
The chiral oxazoline motif is present in many ligands that have been extensively applied in a series of important metal-catalyzed enantioselective reactions. This Review aims to provide a comprehensive overview of the most significant applications of oxazoline-containing ligands reported in the literature starting from 2009 until the end of 2018. The ligands are classified not by the reaction to which their metal complexes have been applied but by the nature of the denticity, chirality, and donor atoms involved. As a result, the continued development of ligand architectural design from mono(oxazolines), to bis(oxazolines), to tris(oxazolines) and tetra(oxazolines) and variations thereof can be more easily monitored by the reader. In addition, the key transition states of selected asymmetric transformations will be given to illustrate the features that give rise to high levels of asymmetric induction. As a further aid to the reader, we summarize the majority of schemes with representative examples that highlight the variation in % yields and % ees for carefully selected substrates. This Review should be of particular interest to the experts in the field but also serve as a useful starting point to new researchers in this area. It is hoped that this Review will stimulate both the development/design of new ligands and their applications in novel metal-catalyzed asymmetric transformations.
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Affiliation(s)
- Robert Connon
- Synthesis
and Solid State Pharmaceutical Centre, Centre for Synthesis and Chemical
Biology, School of Chemistry, University
College Dublin, Dublin
4, Ireland
| | - Brendan Roche
- Synthesis
and Solid State Pharmaceutical Centre, Centre for Synthesis and Chemical
Biology, School of Chemistry, University
College Dublin, Dublin
4, Ireland
| | - Balaji V. Rokade
- BiOrbic
Research Centre, Centre for Synthesis and Chemical Biology, School
of Chemistry, University College Dublin, Dublin 4, Ireland
| | - Patrick J. Guiry
- Synthesis
and Solid State Pharmaceutical Centre, Centre for Synthesis and Chemical
Biology, School of Chemistry, University
College Dublin, Dublin
4, Ireland
- BiOrbic
Research Centre, Centre for Synthesis and Chemical Biology, School
of Chemistry, University College Dublin, Dublin 4, Ireland
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23
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Wang X, Han Z, Wang Z, Ding K. A Type of Structurally Adaptable Aromatic Spiroketal Based Chiral Diphosphine Ligands in Asymmetric Catalysis. Acc Chem Res 2021; 54:668-684. [PMID: 33444016 DOI: 10.1021/acs.accounts.0c00697] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
ConspectusWhile spectacular successes have been achieved in homogeneous catalysis with the use of achiral diphosphine ligands featuring a wide natural bite angle, such as XantPhos, chiral diphosphines that can induce a large P-M-P bite angle in their transition metal complexes are conspicuously less explored in asymmetric catalysis, probably due to the challenges in the identification and efficient construction of a suitable chiral backbone. In the past decade, a highly efficient synthesis of chiral aromatic spiroketals and the corresponding diphosphine ligands (SKPs) has been developed in this group.Based on a one-pot catalytic tandem double asymmetric hydrogenation-spiroketalization ring-closure reaction sequence, these SKP ligands featuring an extraordinarily long P···P distance and a flexible backbone have been readily prepared in large scale. Remarkably versatile coordination modes have been found in the complexes of SKP with some catalysis-relevant transition metals, for example, Pd, Cu, Au, and Rh. Whereas SKP enforces an unusually large bite angle in [Pd(SKP)Cl2] and [Cu(SKP)Cl] complexes (160.1° and 132.8°, respectively), it also allows for a bimetallic Au-Au interaction (3.254 Å) in the complex of [Au2(SKP)Cl2] or a square-planar coordination geometry for the [Rh(SKP)(cod)]SbF6 complex. Such an adaptable nature of SKP ligands for transition metal coordination has profound consequences in homogeneous asymmetric catalysis, as demonstrated by their unique performance in several types of catalytic asymmetric reactions. One of the most exciting examples is SKP/Pd-catalyzed asymmetric allylic amination of Morita-Baylis-Hillman (MBH) adducts, in which SKP/Pd complexes demonstrated excellent control of regio- and enantioselectivities and exhibited exceptionally high efficiency (with a TON up to 4750) in the catalysis. SKP ligands have also found a diversity of successful applications in Cu-, Au-, or Rh-catalyzed asymmetric reactions, further attesting their wide utilities in asymmetric catalysis. Overall, this class of readily accessible SKP ligands featuring a chiral aromatic spiroketal skeleton have demonstrated unique adaptable structures in a variety of transition metal complexes and provided outstanding performance in some difficult asymmetric transformations. The works delineated herein would be expected to stimulate further research efforts on the application of this type of chiral ligand and to provide useful clues in the design of new chiral diphosphine ligands with adaptable bite angles for transition metal catalyzed asymmetric reactions.
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Affiliation(s)
- Xiaoming Wang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Zhaobin Han
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Zheng Wang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Kuiling Ding
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
- Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
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24
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Asymmetric hydrogenation of unfunctionalized olefins or with poorly coordinative groups. ADVANCES IN CATALYSIS 2021. [DOI: 10.1016/bs.acat.2021.08.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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25
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Bin H, Cheng L, Yang X, Xie J, Zhou Q. Enantioselective Construction of the Pyridine-Fused Chiral Bicyclo- [3.3.1]nonane Skeleton of Huperzine A and Its Analogues. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202105059] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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26
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Peters BBC, Jongcharoenkamol J, Krajangsri S, Andersson PG. Highly Enantioselective Iridium-Catalyzed Hydrogenation of Conjugated Trisubstituted Enones. Org Lett 2021; 23:242-246. [PMID: 33351634 PMCID: PMC7884017 DOI: 10.1021/acs.orglett.0c04012] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
Asymmetric hydrogenation of conjugated
enones is one of the most
efficient and straightforward methods to prepare optically active
ketones. In this study, chiral bidentate Ir–N,P complexes were
utilized to access these scaffolds for ketones bearing the stereogenic
center at both the α- and β-positions. Excellent enantiomeric
excesses, of up to 99%, were obtained, accompanied with good to high
isolated yields. Challenging dialkyl substituted substrates, which
are difficult to hydrogenate with satisfactory chiral induction, were
hydrogenated in a highly enantioselective fashion.
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Affiliation(s)
- Bram B C Peters
- Department of Organic Chemistry, Stockholm University, Arrhenius Laboratory, 106 91, Stockholm, Sweden
| | - Jira Jongcharoenkamol
- Department of Organic Chemistry, Stockholm University, Arrhenius Laboratory, 106 91, Stockholm, Sweden
| | - Suppachai Krajangsri
- Department of Organic Chemistry, Stockholm University, Arrhenius Laboratory, 106 91, Stockholm, Sweden
| | - Pher G Andersson
- Department of Organic Chemistry, Stockholm University, Arrhenius Laboratory, 106 91, Stockholm, Sweden.,School of Chemistry and Physics, University of KwaZulu-Natal, Private Bag X54001, Durban, South Africa
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27
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Allred TK, Dieskau AP, Zhao P, Lackner GL, Overman LE. General Access to Concave-Substituted cis-Dioxabicyclo[3.3.0]octanones: Enantioselective Total Syntheses of Macfarlandin C and Dendrillolide A. J Org Chem 2020; 85:15532-15551. [PMID: 33197184 DOI: 10.1021/acs.joc.0c02273] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The evolution of a strategy to access the family of rearranged spongian diterpenoids harboring a concave-substituted cis-2,8-dioxabicyclo[3.3.0]octan-3-one fragment is described. The approach involves late-stage fragment coupling of a tertiary-carbon radical and an electron-deficient double bond to form vicinal quaternary and tertiary stereocenters with high fidelity. A stereoselective Mukaiyama hydration is the key step in the subsequent elaboration of the cis-2,8-dioxabicyclo[3.3.0]octan-3-one moiety. This strategy was utilized in enantioselective total syntheses of (-)-macfarlandin C and (+)-dendrillolide A. An efficient construction of enantiopure tetramethyloctahydronaphthalenes was developed during the construction of (-)-macfarlandin C.
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Affiliation(s)
- Tyler K Allred
- Department of Chemistry, University of California, Irvine, Irvine, California 92697-2025, United States
| | - André P Dieskau
- Department of Chemistry, University of California, Irvine, Irvine, California 92697-2025, United States
| | - Peng Zhao
- Department of Chemistry, University of California, Irvine, Irvine, California 92697-2025, United States
| | - Gregory L Lackner
- Department of Chemistry, University of California, Irvine, Irvine, California 92697-2025, United States
| | - Larry E Overman
- Department of Chemistry, University of California, Irvine, Irvine, California 92697-2025, United States
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28
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Meyer CC, Ortiz E, Krische MJ. Catalytic Reductive Aldol and Mannich Reactions of Enone, Acrylate, and Vinyl Heteroaromatic Pronucleophiles. Chem Rev 2020; 120:3721-3748. [PMID: 32191438 PMCID: PMC7904107 DOI: 10.1021/acs.chemrev.0c00053] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Catalytic reductive coupling of enone, acrylate, or vinyl heteroaromatic pronucleophiles with carbonyl or imine partners offers an alternative to base-mediated enolization in aldol- and Mannich-type reactions. In this review, direct catalytic reductive aldol and Mannich reactions are exhaustively catalogued on the basis of metal or organocatalyst. Stepwise processes involving enone conjugate reduction to form discrete enol or (metallo)enolate derivatives followed by introduction of carbonyl or imine electrophiles and aldol reactions initiated via enone conjugate addition are not covered.
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Affiliation(s)
- Cole C. Meyer
- University of Texas at Austin, Department of Chemistry, Welch Hall
(A5300), 105 E 24 St., Austin, TX 78712, USA
| | - Eliezer Ortiz
- University of Texas at Austin, Department of Chemistry, Welch Hall
(A5300), 105 E 24 St., Austin, TX 78712, USA
| | - Michael J. Krische
- University of Texas at Austin, Department of Chemistry, Welch Hall
(A5300), 105 E 24 St., Austin, TX 78712, USA
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29
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Gao B, Feng X, Meng W, Du H. Asymmetric Hydrogenation of Ketones and Enones with Chiral Lewis Base Derived Frustrated Lewis Pairs. Angew Chem Int Ed Engl 2020; 59:4498-4504. [PMID: 31863715 DOI: 10.1002/anie.201914568] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Indexed: 01/13/2023]
Abstract
The concept of frustrated Lewis pairs (FLPs) has been widely applied in various research areas, and metal-free hydrogenation undoubtedly belongs to the most significant and successful ones. In the past decade, great efforts have been devoted to the synthesis of chiral boron Lewis acids. In a sharp contrast, chiral Lewis base derived FLPs have rarely been disclosed for the asymmetric hydrogenation. In this work, a novel type of chiral FLP was developed by simple combination of chiral oxazoline Lewis bases with achiral boron Lewis acids, thus providing a promising new direction for the development of chiral FLPs in the future. These chiral FLPs proved to be highly effective for the asymmetric hydrogenation of ketones, enones, and chromones, giving the corresponding products in high yields with up to 95 % ee. Mechanistic studies suggest that the hydrogen transfer to simple ketones likely proceeds in a concerted manner.
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Affiliation(s)
- Bochao Gao
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiangqing Feng
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Wei Meng
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Haifeng Du
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
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30
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Gao B, Feng X, Meng W, Du H. Asymmetric Hydrogenation of Ketones and Enones with Chiral Lewis Base Derived Frustrated Lewis Pairs. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201914568] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Bochao Gao
- Beijing National Laboratory for Molecular SciencesCAS Key Laboratory of Molecular Recognition and FunctionCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of Sciences Beijing 100190 China
- School of Chemical SciencesUniversity of Chinese Academy of Sciences Beijing 100049 China
| | - Xiangqing Feng
- Beijing National Laboratory for Molecular SciencesCAS Key Laboratory of Molecular Recognition and FunctionCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of Sciences Beijing 100190 China
- School of Chemical SciencesUniversity of Chinese Academy of Sciences Beijing 100049 China
| | - Wei Meng
- Beijing National Laboratory for Molecular SciencesCAS Key Laboratory of Molecular Recognition and FunctionCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of Sciences Beijing 100190 China
- School of Chemical SciencesUniversity of Chinese Academy of Sciences Beijing 100049 China
| | - Haifeng Du
- Beijing National Laboratory for Molecular SciencesCAS Key Laboratory of Molecular Recognition and FunctionCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of Sciences Beijing 100190 China
- School of Chemical SciencesUniversity of Chinese Academy of Sciences Beijing 100049 China
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31
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Yang J, Li X, You C, Li S, Guan YQ, Lv H, Zhang X. Rhodium-catalyzed asymmetric hydrogenation of exocyclic α,β-unsaturated carbonyl compounds. Org Biomol Chem 2020; 18:856-859. [PMID: 31939975 DOI: 10.1039/c9ob02536g] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
A highly enantioselective hydrogenation of exocyclic α,β-unsaturated carbonyl compounds catalyzed by Rh/bisphosphine-thiourea (ZhaoPhos) has been developed, giving the corresponding α-chiral cyclic lactones, lactams and ketones with high yields and excellent enantioselectivities (up to 99% yield and 99% ee). Remarkably, the hydrogen bond between the substrate and the catalyst plays a critical role in this transformation. The synthetic utility of this protocol has been demonstrated by efficient synthesis of chiral 3-(4-fluorobenzyl)piperidine, a key chiral fragment of bioactive molecules.
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Affiliation(s)
- Jiaxin Yang
- Key Laboratory of Biomedical Polymers of Ministry of Education & College of Chemistry and Molecular Sciences, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Sauvage Center for Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, People's Republic of China.
| | - Xiuxiu Li
- Key Laboratory of Biomedical Polymers of Ministry of Education & College of Chemistry and Molecular Sciences, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Sauvage Center for Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, People's Republic of China.
| | - Cai You
- Key Laboratory of Biomedical Polymers of Ministry of Education & College of Chemistry and Molecular Sciences, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Sauvage Center for Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, People's Republic of China.
| | - Shuailong Li
- Key Laboratory of Biomedical Polymers of Ministry of Education & College of Chemistry and Molecular Sciences, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Sauvage Center for Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, People's Republic of China.
| | - Yu-Qing Guan
- Key Laboratory of Biomedical Polymers of Ministry of Education & College of Chemistry and Molecular Sciences, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Sauvage Center for Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, People's Republic of China.
| | - Hui Lv
- Key Laboratory of Biomedical Polymers of Ministry of Education & College of Chemistry and Molecular Sciences, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Sauvage Center for Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, People's Republic of China.
| | - Xumu Zhang
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518000, People's Republic of China
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32
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Temperini A, Ballarotto M, Siciliano C. Chemoselective and metal-free reduction of α,β-unsaturated ketones by in situ produced benzeneselenol from O-( tert-butyl) Se-phenyl selenocarbonate. RSC Adv 2020; 10:33706-33717. [PMID: 35519049 PMCID: PMC9056720 DOI: 10.1039/d0ra07128e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 08/28/2020] [Indexed: 12/04/2022] Open
Abstract
The carbon–carbon double bond of arylidene acetones and chalcones can be selectively reduced with benzeneselenol generated in situ by reacting O-(tert-butyl) Se-phenyl selenocarbonate with hydrochloric acid in ethanol. This mild, metal-free and experimentally simple reduction procedure displays considerable functional-group compatibility, products are obtained in good to excellent yields, and the use of toxic Se/CO mixture and NaSeH, or the smelly and air-sensitive benzeneselenol, is avoided. The carbon–carbon double bond of arylidene acetones and chalcones can be selectively reduced with benzeneselenol generated in situ by reacting O-(tert-butyl) Se-phenyl selenocarbonate with hydrochloric acid in ethanol.![]()
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Affiliation(s)
- Andrea Temperini
- Dipartimento di Scienze Farmaceutiche
- Università di Perugia
- Consorzio C.I.N.M.P.I.S
- 06123 Perugia
- Italy
| | - Marco Ballarotto
- Dipartimento di Scienze Farmaceutiche
- Università di Perugia
- Consorzio C.I.N.M.P.I.S
- 06123 Perugia
- Italy
| | - Carlo Siciliano
- Dipartimento di Farmacia e Scienze della Salute e della Nutrizione
- Università della Calabria
- Cosenza
- Italy
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33
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Biosca M, Pàmies O, Diéguez M. Ir–Biaryl phosphite–oxazoline catalyst libraries: a breakthrough in the asymmetric hydrogenation of challenging olefins. Catal Sci Technol 2020. [DOI: 10.1039/c9cy02501d] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
This work describes our progress in the successful development of phosphite/phosphinite–oxazoline ligands for the Ir-catalyzed asymmetric hydrogenation of challenging olefins.
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Affiliation(s)
- Maria Biosca
- Universitat Rovira i Virgili
- Departament de Química Física i Inorgànica
- 1. 43007 Tarragona
- Spain
| | - Oscar Pàmies
- Universitat Rovira i Virgili
- Departament de Química Física i Inorgànica
- 1. 43007 Tarragona
- Spain
| | - Montserrat Diéguez
- Universitat Rovira i Virgili
- Departament de Química Física i Inorgànica
- 1. 43007 Tarragona
- Spain
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34
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Li J, Zhu Y, Lu Y, Wang Y, Liu Y, Liu D, Zhang W. RuPHOX-Ru-Catalyzed Selective Asymmetric Hydrogenation of Exocyclic α,β-Unsaturated Pentanones. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00366] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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35
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Biosca M, Pàmies O, Diéguez M. Giving a Second Chance to Ir/Sulfoximine-Based Catalysts for the Asymmetric Hydrogenation of Olefins Containing Poorly Coordinative Groups. J Org Chem 2019; 84:8259-8266. [PMID: 31117569 DOI: 10.1021/acs.joc.9b00829] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
This work identifies a family of Ir/phosphite-sulfoximine catalysts that has been successfully used in the asymmetric hydrogenation of olefins with poorly coordinative or noncoordinative groups. In comparison with analogue Ir/phosphine-sulfoximine catalysts previously reported, the presence of a phosphite group extended the range of olefins than can be efficiently hydrogenated. High enantioselectivities, comparable to the best ones reported, have been achieved for a wide range of olefins containing relevant poorly coordinative groups such as α,β-unsaturated enones, esters, lactones, and lactams as well as alkenylboronic esters.
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Affiliation(s)
- Maria Biosca
- Universitat Rovira i Virgili , Departament de Química Física i Inorgànica , C/Marcel·lí Domingo 1 , 43007 Tarragona , Spain
| | - Oscar Pàmies
- Universitat Rovira i Virgili , Departament de Química Física i Inorgànica , C/Marcel·lí Domingo 1 , 43007 Tarragona , Spain
| | - Montserrat Diéguez
- Universitat Rovira i Virgili , Departament de Química Física i Inorgànica , C/Marcel·lí Domingo 1 , 43007 Tarragona , Spain
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36
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Schwikkard S, Whitmore H, Sishtla K, Sulaiman RS, Shetty T, Basavarajappa HD, Waller C, Alqahtani A, Frankemoelle L, Chapman A, Crouch N, Wetschnig W, Knirsch W, Andriantiana J, Mas-Claret E, Langat MK, Mulholland D, Corson TW. The Antiangiogenic Activity of Naturally Occurring and Synthetic Homoisoflavonoids from the Hyacinthaceae ( sensu APGII). JOURNAL OF NATURAL PRODUCTS 2019; 82:1227-1239. [PMID: 30951308 PMCID: PMC6771261 DOI: 10.1021/acs.jnatprod.8b00989] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Excessive blood vessel formation in the eye is implicated in wet age-related macular degeneration, proliferative diabetic retinopathy, neovascular glaucoma, and retinopathy of prematurity, which are major causes of blindness. Small molecule antiangiogenic drugs are strongly needed to supplement existing biologics. Homoisoflavonoids have been previously shown to have potent antiproliferative activities in endothelial cells over other cell types. Moreover, they demonstrated a strong antiangiogenic potential in vitro and in vivo in animal models of ocular neovascularization. Here, we tested the antiangiogenic activity of a group of naturally occurring homoisoflavonoids isolated from the family Hyacinthaceae and related synthetic compounds, chosen for synthesis based on structure-activity relationship observations. Several compounds showed interesting antiproliferative and antiangiogenic activities in vitro on retinal microvascular endothelial cells, a disease-relevant cell type, with the synthetic chromane, 46, showing the best activity (GI50 of 2.3 × 10-4 μM).
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Affiliation(s)
- Sianne Schwikkard
- School of Life Sciences, Pharmacy and Chemistry,
Kingston University, Kingston-upon-Thames, KT1 2EE, UK
- Natural Products Research Group, Department of
Chemistry, Faculty of Engineering and Physical Sciences, University of Surrey,
Guildford, GU2 7XH, United Kingdom
| | - Hannah Whitmore
- Natural Products Research Group, Department of
Chemistry, Faculty of Engineering and Physical Sciences, University of Surrey,
Guildford, GU2 7XH, United Kingdom
| | - Kamakshi Sishtla
- Eugene and Marilyn Glick Eye Institute, Department
of Ophthalmology, Indiana University School of Medicine, 1160 W. Michigan St.,
Indianapolis, IN 46202, U.S.A
| | - Rania S. Sulaiman
- Eugene and Marilyn Glick Eye Institute, Department
of Ophthalmology, Indiana University School of Medicine, 1160 W. Michigan St.,
Indianapolis, IN 46202, U.S.A
- Department of Pharmacology and Toxicology,
Indiana University School of Medicine, 1160 W. Michigan St., Indianapolis, IN 46202,
U.S.A
- Department of Biochemistry, Faculty of Pharmacy,
Cairo University, Cairo, Egypt
| | - Trupti Shetty
- Eugene and Marilyn Glick Eye Institute, Department
of Ophthalmology, Indiana University School of Medicine, 1160 W. Michigan St.,
Indianapolis, IN 46202, U.S.A
- Department of Pharmacology and Toxicology,
Indiana University School of Medicine, 1160 W. Michigan St., Indianapolis, IN 46202,
U.S.A
| | - Halesha D. Basavarajappa
- Eugene and Marilyn Glick Eye Institute, Department
of Ophthalmology, Indiana University School of Medicine, 1160 W. Michigan St.,
Indianapolis, IN 46202, U.S.A
- Department of Biochemistry and
Molecular Biology, Indiana University School of Medicine, 1160 W. Michigan St.,
Indianapolis, IN 46202, U.S.A
| | - Catherine Waller
- Natural Products Research Group, Department of
Chemistry, Faculty of Engineering and Physical Sciences, University of Surrey,
Guildford, GU2 7XH, United Kingdom
| | - Alaa Alqahtani
- Natural Products Research Group, Department of
Chemistry, Faculty of Engineering and Physical Sciences, University of Surrey,
Guildford, GU2 7XH, United Kingdom
| | - Lennart Frankemoelle
- School of Life Sciences, Pharmacy and Chemistry,
Kingston University, Kingston-upon-Thames, KT1 2EE, UK
| | - Andy Chapman
- School of Life Sciences, Pharmacy and Chemistry,
Kingston University, Kingston-upon-Thames, KT1 2EE, UK
| | - Neil Crouch
- Biodiversity Economy, South African National
Biodiversity Institute, P.O. Box 52099, 4007 Berea Road, Durban, South Africa
- School of Chemistry and Physics, University of
KwaZulu-Natal, Durban, 4041, South Africa
| | | | - Walter Knirsch
- Institute of Biology, NAWI Graz, University of Graz,
8010 Graz, Austria
| | - Jacky Andriantiana
- Parc Botanique et Zoologique de Tsimbazaza, Rue
Fernand Kassanga, Antananarivo 101, Madagascar
| | - Eduard Mas-Claret
- Natural Products Research Group, Department of
Chemistry, Faculty of Engineering and Physical Sciences, University of Surrey,
Guildford, GU2 7XH, United Kingdom
| | - Moses K Langat
- Natural Products Research Group, Department of
Chemistry, Faculty of Engineering and Physical Sciences, University of Surrey,
Guildford, GU2 7XH, United Kingdom
- School of Chemistry and Physics, University of
KwaZulu-Natal, Durban, 4041, South Africa
| | - Dulcie Mulholland
- Natural Products Research Group, Department of
Chemistry, Faculty of Engineering and Physical Sciences, University of Surrey,
Guildford, GU2 7XH, United Kingdom
- School of Chemistry and Physics, University of
KwaZulu-Natal, Durban, 4041, South Africa
| | - Timothy W. Corson
- Eugene and Marilyn Glick Eye Institute, Department
of Ophthalmology, Indiana University School of Medicine, 1160 W. Michigan St.,
Indianapolis, IN 46202, U.S.A
- Department of Pharmacology and Toxicology,
Indiana University School of Medicine, 1160 W. Michigan St., Indianapolis, IN 46202,
U.S.A
- Department of Biochemistry and
Molecular Biology, Indiana University School of Medicine, 1160 W. Michigan St.,
Indianapolis, IN 46202, U.S.A
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37
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Li J, Lu Y, Zhu Y, Nie Y, Shen J, Liu Y, Liu D, Zhang W. Selective Asymmetric Hydrogenation of Four-Membered Exo-α,β-Unsaturated Cyclobutanones Using RuPHOX-Ru as a Catalyst. Org Lett 2019; 21:4331-4335. [PMID: 31124691 DOI: 10.1021/acs.orglett.9b01514] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The selective asymmetric hydrogenation of four-membered exo-α,β-unsaturated cyclobutanones has been achieved for the first time using RuPHOX-Ru as a catalyst, providing four-membered exo-cyclic chiral allylic alcohols in high yields and with up to 99.9% ee. The reaction could be performed on a gram scale with a relatively low catalyst loading (up to 10000 S/C), and the resulting products can be transformed to several biologically active molecules.
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38
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Margalef J, Borràs C, Alegre S, Alberico E, Pàmies O, Diéguez M. Phosphite‐thioether/selenoether Ligands from Carbohydrates: An Easily Accessible Ligand Library for the Asymmetric Hydrogenation of Functionalized and Unfunctionalized Olefins. ChemCatChem 2019. [DOI: 10.1002/cctc.201900132] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Jèssica Margalef
- Department de Química Física I inorgànicaUniversitat Rovira i Virgili C/ Marcel lí Domingo, 1. 43007 Tarragona Spain
| | - Carlota Borràs
- Department de Química Física I inorgànicaUniversitat Rovira i Virgili C/ Marcel lí Domingo, 1. 43007 Tarragona Spain
| | - Sabina Alegre
- Department de Química Física I inorgànicaUniversitat Rovira i Virgili C/ Marcel lí Domingo, 1. 43007 Tarragona Spain
| | - Elisabetta Alberico
- Istututo di Chimica BiomolecolareConsiglio Nazionale delle Ricerche tr. La Crucca 3, Li Punti 07100 Sassari Italy
| | - Oscar Pàmies
- Department de Química Física I inorgànicaUniversitat Rovira i Virgili C/ Marcel lí Domingo, 1. 43007 Tarragona Spain
| | - Montserrat Diéguez
- Department de Química Física I inorgànicaUniversitat Rovira i Virgili C/ Marcel lí Domingo, 1. 43007 Tarragona Spain
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39
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Huynh U, McDonald SL, Lim D, Uddin MN, Wengryniuk SE, Dey S, Coltart DM. Formation, Alkylation, and Hydrolysis of Chiral Nonracemic N-Amino Cyclic Carbamate Hydrazones: An Approach to the Enantioselective α-Alkylation of Ketones. J Org Chem 2018; 83:12951-12964. [PMID: 30200759 DOI: 10.1021/acs.joc.8b00655] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The α-alkylation of ketones is a fundamental synthetic transformation. The development of asymmetric variants of this reaction is important given that numerous natural products, drugs, and related compounds exist as α-functionalized ketones or derivatives thereof. We previously reported our preliminary studies on the development of a new enantioselective ketone α-alkylation procedure using N-amino cyclic carbamate (ACC) auxiliaries. In comparison to other auxiliary-based methods, ACC alkylation offers a number of advantages and is both highly enantioselective and high yielding. Herein, we provide a full account of our studies on the enantioselective ACC ketone α-alkylation method.
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Affiliation(s)
- Uyen Huynh
- Department of Chemistry , University of Houston , Houston , Texas 77204 , United States
| | - Stacey L McDonald
- Department of Chemistry , University of Houston , Houston , Texas 77204 , United States
| | - Daniel Lim
- Department of Chemistry , University of Houston , Houston , Texas 77204 , United States
| | - Md Nasir Uddin
- Department of Chemistry , University of Houston , Houston , Texas 77204 , United States
| | - Sarah E Wengryniuk
- Department of Chemistry , University of Houston , Houston , Texas 77204 , United States
| | - Sumit Dey
- Department of Chemistry , University of Houston , Houston , Texas 77204 , United States
| | - Don M Coltart
- Department of Chemistry , University of Houston , Houston , Texas 77204 , United States
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40
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Long J, Shi L, Li X, Lv H, Zhang X. Rhodium-Catalyzed Highly Regio- and Enantioselective Hydrogenation of Tetrasubstituted Allenyl Sulfones: An Efficient Access to Chiral Allylic Sulfones. Angew Chem Int Ed Engl 2018; 57:13248-13251. [PMID: 30125445 DOI: 10.1002/anie.201804891] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 07/26/2018] [Indexed: 12/31/2022]
Abstract
A highly regio- and enantioselective hydrogenation of challenging tetrasubstituted allenyl sulfones has been developed, affording chiral allylic sulfones in good yields with excellent regio- and enantioselectivities (up to 99 % yield and 99 % ee). This method provides an efficient and concise route to chiral allylic sulfones, thus offering an atom-economic process with a wide range of potential applications in organic synthesis and medicinal chemistry.
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Affiliation(s)
- Jiao Long
- Key Laboratory of Biomedical Polymers of Ministry of Education &, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, 430072, P. R. China
| | - Liyang Shi
- Key Laboratory of Biomedical Polymers of Ministry of Education &, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, 430072, P. R. China
| | - Xiong Li
- Key Laboratory of Biomedical Polymers of Ministry of Education &, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, 430072, P. R. China
| | - Hui Lv
- Key Laboratory of Biomedical Polymers of Ministry of Education &, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, 430072, P. R. China.,Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, 430072, P. R. China
| | - Xumu Zhang
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, P. R. China
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41
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Long J, Shi L, Li X, Lv H, Zhang X. Rhodium‐Catalyzed Highly Regio‐ and Enantioselective Hydrogenation of Tetrasubstituted Allenyl Sulfones: An Efficient Access to Chiral Allylic Sulfones. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201804891] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Jiao Long
- Key Laboratory of Biomedical Polymers of Ministry of Education &, College of Chemistry and Molecular SciencesWuhan University Wuhan Hubei 430072 P. R. China
| | - Liyang Shi
- Key Laboratory of Biomedical Polymers of Ministry of Education &, College of Chemistry and Molecular SciencesWuhan University Wuhan Hubei 430072 P. R. China
| | - Xiong Li
- Key Laboratory of Biomedical Polymers of Ministry of Education &, College of Chemistry and Molecular SciencesWuhan University Wuhan Hubei 430072 P. R. China
| | - Hui Lv
- Key Laboratory of Biomedical Polymers of Ministry of Education &, College of Chemistry and Molecular SciencesWuhan University Wuhan Hubei 430072 P. R. China
- Engineering Research Center of Organosilicon Compounds & MaterialsMinistry of EducationCollege of Chemistry and Molecular SciencesWuhan University Wuhan Hubei 430072 P. R. China
| | - Xumu Zhang
- Department of Chemistry and Shenzhen Grubbs InstituteSouthern University of Science and Technology Shenzhen Guangdong 518055 P. R. China
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42
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Li K, Scott AM, Fissette SD, Buchinger TJ, Riedy JJ, Li W. Petromylidenes A⁻C: 2-Alkylidene Bile Salt Derivatives Isolated from Sea Lamprey ( Petromyzon marinus). Mar Drugs 2018; 16:md16090308. [PMID: 30200427 PMCID: PMC6163752 DOI: 10.3390/md16090308] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 08/24/2018] [Accepted: 08/29/2018] [Indexed: 11/16/2022] Open
Abstract
Three novel bile acid derivatives, petromylidenes A⁻C (1⁻3), featuring uncommon alkylidene adductive scaffolds, were isolated from water conditioned with sexually mature male sea lampreys (Petromyzon marinus). Their structures were elucidated by mass spectrometry and NMR spectroscopy, and by comparison to spectral data of related structures. The identification of compounds 1⁻3, further illustrates the structural diversity of the 5α bile salt family. Compounds 1⁻3 exhibited notable biological properties as well, including high olfactory potencies in adult sea lampreys and strong behavioral attraction of ovulated female sea lampreys. Electro-olfactogram recordings indicated that the limit of detection for 1 was 10-9 M, 2 was 10-11 M, and 3 was less than 10-13 M. These results suggested 1⁻3 were likely male pheromones, which guide reproductive behaviors in the sea lamprey.
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Affiliation(s)
- Ke Li
- Department of Fisheries and Wildlife, Michigan State University, East Lansing, MI 48824, USA.
| | - Anne M Scott
- Department of Fisheries and Wildlife, Michigan State University, East Lansing, MI 48824, USA.
| | - Skye D Fissette
- Department of Fisheries and Wildlife, Michigan State University, East Lansing, MI 48824, USA.
| | - Tyler J Buchinger
- Department of Fisheries and Wildlife, Michigan State University, East Lansing, MI 48824, USA.
| | - Joseph J Riedy
- Department of Fisheries and Wildlife, Michigan State University, East Lansing, MI 48824, USA.
| | - Weiming Li
- Department of Fisheries and Wildlife, Michigan State University, East Lansing, MI 48824, USA.
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43
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Zheng Z, Cao Y, Chong Q, Han Z, Ding J, Luo C, Wang Z, Zhu D, Zhou QL, Ding K. Chiral Cyclohexyl-Fused Spirobiindanes: Practical Synthesis, Ligand Development, and Asymmetric Catalysis. J Am Chem Soc 2018; 140:10374-10381. [PMID: 30036064 DOI: 10.1021/jacs.8b07125] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
1,1'-Spirobiindane has been one type of privileged skeleton for chiral ligand design, and 1,1'-spirobiindane-based chiral ligands have demonstrated outstanding performance in various asymmetric catalysis. However, the access to enantiopure spirobiindane is quite tedious, which obstructs its practical application. In the present article, a facile enantioselective synthesis of cyclohexyl-fused chiral spirobiindanes has been accomplished, in high yields and excellent stereoselectivities (up to >99% ee), via a sequence of Ir-catalyzed asymmetric hydrogenation of α,α'-bis(arylidene)ketones and TiCl4 promoted asymmetric spiroannulation of the hydrogenated chiral ketones. The protocol can be performed in one pot and is readily scalable, and has been utilized in a 25 g scale asymmetric synthesis of cyclohexyl-fused spirobiindanediol (1 S,2 S,2' S)-5, in >99% ee and 67% overall yield for four steps without chromatographic purification. Facile derivations of (1 S,2 S,2' S)-5 provided straightforward access to chiral monodentate phosphoramidites 6a-c and a tridentate phosphorus-amidopyridine 11, which were evaluated as chiral ligands in several benchmark enantioselective reactions (hydrogenation, hydroacylation, and [2 + 2] reaction) catalyzed by transition metal (Rh, Au, or Ir). Preliminary results from comparative studies showcased the excellent catalytic performances of these ligands, with a competency essentially equal to the corresponding well-established privileged ligands bearing a regular spirobiindane backbone. X-ray crystallography revealed a close resemblance between the structures of the precatalysts 20 and 21 and their analogues, which ultimately help to rationalize the almost identical stereochemical outcomes of reactions catalyzed by metal complexes of spirobiindane-derived ligands with or without a fused cyclohexyl ring on the backbone. This work is expected to stimulate further applications of this type of readily accessible skeletons in development of chiral ligands and functional molecules.
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Affiliation(s)
- Zhiyao Zheng
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis , Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , China
| | - Yuxi Cao
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis , Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , China.,Department of Chemistry , Northeast Normal University , Changchun 130024 , China
| | - Qinglei Chong
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis , Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , China.,Collaborative Innovation Center of Chemical Science and Engineering , Nankai University , Tianjin 300071 , China
| | - Zhaobin Han
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis , Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , China
| | - Jiaming Ding
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis , Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , China
| | - Chenguang Luo
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis , Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , China
| | - Zheng Wang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis , Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , China
| | - Dongsheng Zhu
- Department of Chemistry , Northeast Normal University , Changchun 130024 , China
| | - Qi-Lin Zhou
- State Key Laboratory and Institute of Elemento-Organic Chemistry , Nankai University , Tianjin 300071 , China.,Collaborative Innovation Center of Chemical Science and Engineering , Nankai University , Tianjin 300071 , China
| | - Kuiling Ding
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis , Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , China.,Collaborative Innovation Center of Chemical Science and Engineering , Nankai University , Tianjin 300071 , China.,University of Chinese Academy of Sciences , Beijing 100049 , China
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44
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Wang X, Ding K. Making Spiroketal-based Diphosphine (SKP) Ligands via a Catalytic Asymmetric Approach. CHINESE J CHEM 2018. [DOI: 10.1002/cjoc.201800247] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Xiaoming Wang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences (CAS), 345 Lingling Road; Shanghai 200032 China
| | - Kuiling Ding
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences (CAS), 345 Lingling Road; Shanghai 200032 China
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45
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Xia J, Nie Y, Yang G, Liu Y, Gridnev ID, Zhang W. Ir-Catalyzed Asymmetric Hydrogenation of α-Alkylidene β-Lactams and Cyclobutanones. CHINESE J CHEM 2018. [DOI: 10.1002/cjoc.201800088] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Jingzhao Xia
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmacy; Shanghai Jiao Tong University, 800 Dongchuan Road; Shanghai 200240 China
| | - Yu Nie
- School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University, 800 Dongchuan Road; Shanghai 200240 China
| | - Guoqiang Yang
- School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University, 800 Dongchuan Road; Shanghai 200240 China
| | - Yangang Liu
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmacy; Shanghai Jiao Tong University, 800 Dongchuan Road; Shanghai 200240 China
- School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University, 800 Dongchuan Road; Shanghai 200240 China
| | - Ilya D. Gridnev
- Department of Chemistry, Graduate School of Science; Tohoku University, Aramaki 3-6, Aoba-ku; Sendai 9808578 Japan
| | - Wanbin Zhang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmacy; Shanghai Jiao Tong University, 800 Dongchuan Road; Shanghai 200240 China
- School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University, 800 Dongchuan Road; Shanghai 200240 China
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46
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Hagiwara H. Chemo- and Enantioselective Catalytic Hydrogenation of α,β-Unsaturated Ketones and Aldehydes as a Tool to Introduce Chiral Centers at α- or β-Positions of Ketones. Nat Prod Commun 2018. [DOI: 10.1177/1934578x1801300427] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Catalytic enantioselective hydrogenations of acyclic and cyclic α,β-unsaturated ketones and aldehydes are useful protocols for introduction of chiral centers at α- and/or β-positions of ketones especially in process scale reactions, which are reviewed in addition to conjugate and organocatalytic transfer reductions from the literatures since 2000.
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Affiliation(s)
- Hisahiro Hagiwara
- Graduate School of Science and Technology, Niigata University, 8050, 2-Nocho, Ikarashi, Nishi-ku, Niigata, 950–2181, Japan
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47
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Enantioselective phospha-Michael reaction of diethyl phosphonate with exocyclic α,β-unsaturated benzocyclic ketones catalyzed by a dinuclear zinc−AzePhenol catalyst. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.03.016] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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48
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Takeda N, Furuishi M, Nishijima Y, Futaki E, Ueda M, Shinada T, Miyata O. Chiral isoxazolidine-mediated stereoselective umpolung α-phenylation of methyl ketones. Org Biomol Chem 2018; 16:8940-8943. [DOI: 10.1039/c8ob02480d] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Asymmetric nucleophilic phenylation of N-alkoxyenamine with triphenylaluminium is achieved for the formation of enantioenriched α-phenyl ketones through a one-pot process.
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Affiliation(s)
| | | | | | - Erika Futaki
- Kobe Pharmaceutical University
- Kobe 658-8558
- Japan
| | | | - Tetsuro Shinada
- Graduate School of Science
- Osaka City University
- Osaka 558-8585
- Japan
| | - Okiko Miyata
- Kobe Pharmaceutical University
- Kobe 658-8558
- Japan
- Graduate School of Science
- Osaka City University
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49
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Kaku H, Ito M, Horikawa M, Tsunoda T. Deracemization of α-monosubstituted cyclopentanones in the presence of a TADDOL-type host molecule. Tetrahedron 2018. [DOI: 10.1016/j.tet.2017.11.045] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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50
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Selva E, Sempere Y, Ruiz-Martínez D, Pablo Ó, Guijarro D. Synthesis of Allylic Amines by Asymmetric Transfer Hydrogenation of α,β-Unsaturated N-(tert-Butylsulfinyl)imines. J Org Chem 2017; 82:13693-13699. [DOI: 10.1021/acs.joc.7b02472] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Elisabet Selva
- Departamento de Química
Orgánica, Facultad de Ciencias and Instituto de Síntesis
Orgánica (ISO), Universidad de Alicante, Apdo. 99, 03080 Alicante, Spain
| | - Yeshua Sempere
- Departamento de Química
Orgánica, Facultad de Ciencias and Instituto de Síntesis
Orgánica (ISO), Universidad de Alicante, Apdo. 99, 03080 Alicante, Spain
| | - Débora Ruiz-Martínez
- Departamento de Química
Orgánica, Facultad de Ciencias and Instituto de Síntesis
Orgánica (ISO), Universidad de Alicante, Apdo. 99, 03080 Alicante, Spain
| | - Óscar Pablo
- Departamento de Química
Orgánica, Facultad de Ciencias and Instituto de Síntesis
Orgánica (ISO), Universidad de Alicante, Apdo. 99, 03080 Alicante, Spain
| | - David Guijarro
- Departamento de Química
Orgánica, Facultad de Ciencias and Instituto de Síntesis
Orgánica (ISO), Universidad de Alicante, Apdo. 99, 03080 Alicante, Spain
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