1
|
Wang Y, Wang Y, Du X, Zheng K, Zhai S, Bai S, Fang L, Zhang T. Catalytic Enantioselective Propargylation of Pyrazolones by Amide-Based Phase-Transfer Catalysts. Org Lett 2024; 26:7318-7323. [PMID: 39185762 DOI: 10.1021/acs.orglett.4c02441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/27/2024]
Abstract
In this paper, we developed a highly enantioselective alkylation of 4-substituted pyrazolones catalyzed by phase-transfer catalysis. Cheap halohydrocarbons were employed as electrophilic alkylationg agents, and propargyl, allyl, and benzyl products with all-carbon quaternary stereocenters were afforded with excellent enantioselectivities and good yields. We found that the unique structures of the catalyst (hydrogen bond donors of the C-9 hydroxyl group and amide group, the triphenyl at the NH-position) were important for good enantioselectivity. Furthermore, chiral propargyl products could be easily connected to azide molecules by click cycloaddition, which offers unique opportunities to obtain structurally diverse chiral pyrazolones.
Collapse
Affiliation(s)
- Yakun Wang
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| | - Yingying Wang
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| | - Xiaoyu Du
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| | - Kaiting Zheng
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| | - Shuman Zhai
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| | - Suping Bai
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| | - Lizhen Fang
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| | - Tao Zhang
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| |
Collapse
|
2
|
Iino Y, Matsushima Y, Nakashima K, Hirashima SI, Miura T. Organocatalyzed Synthesis of γ-Alkenyl Butenolides via Asymmetric Direct Vinylogous Conjugate Addition-Elimination of Substituted Furanone Derivatives to β-Phenylsulfonylenones. J Org Chem 2024; 89:11789-11795. [PMID: 39093710 DOI: 10.1021/acs.joc.4c01218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/04/2024]
Abstract
A diaminomethylenemalononitrile organocatalyst efficiently promoted the asymmetric direct vinylogous conjugate addition of α-angelica lactone derivatives to β-phenylsulfonylenones, affording the corresponding γ-alkenyl γ-butenolides in high yields with excellent enantioselectivities (up to 97% ee) after the elimination of the phenylsulfonyl group. This study reports the first successful example of a stereoselective reaction using β-phenylsulfonylenone as the direct alkenyl donor.
Collapse
Affiliation(s)
- Yuta Iino
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Yasuyuki Matsushima
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Kosuke Nakashima
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Shin-Ichi Hirashima
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Tsuyoshi Miura
- Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| |
Collapse
|
3
|
Teng BH, Bao ZP, Zhao Y, Wu XF. Nickel-Catalyzed Four-Component Carbonylation of 1,3-Butadiene To Access β,γ-Unsaturated Ketones. Org Lett 2024; 26:4779-4783. [PMID: 38807481 PMCID: PMC11165585 DOI: 10.1021/acs.orglett.4c01599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Revised: 05/13/2024] [Accepted: 05/16/2024] [Indexed: 05/30/2024]
Abstract
A new strategy to obtain β,γ-unsaturated ketones via the cross-coupling of 1,3-butadiene, alkyl bromides, and arylboronic acids under 1 bar of CO with nickel as the catalyst has been developed. This newly developed four-component carbonylation procedure features advantages including using a cheap catalytic system, high step economy, mild reaction conditions, and excellent 1,4-regioselectivity, thereby providing a sustainable and alternative tool for β,γ-unsaturated ketones production compared to the present tactics. To elucidate the application potential of this method, olefin synthons are derived from the representative coupling product.
Collapse
Affiliation(s)
- Bing-Hong Teng
- Dalian
National Laboratory for Clean Energy, Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China
- School
of Chemistry and Chemical Engineering, Liaoning
Normal University, 850 Huanghe Road, Dalian 116029, China
| | - Zhi-Peng Bao
- Dalian
National Laboratory for Clean Energy, Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China
- Leibniz-Institut
für Katalyse e.V., Albert-Einstein-Straße 29a, 18059 Rostock, Germany
| | - Yingying Zhao
- School
of Chemistry and Chemical Engineering, Liaoning
Normal University, 850 Huanghe Road, Dalian 116029, China
| | - Xiao-Feng Wu
- Dalian
National Laboratory for Clean Energy, Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China
- Leibniz-Institut
für Katalyse e.V., Albert-Einstein-Straße 29a, 18059 Rostock, Germany
| |
Collapse
|
4
|
Wang X, Bai G, Liu R, Zhu X, Ye X, Zhang T, Zhang K, Bonne D, Rodriguez J, Wang H, Bao X. Enantioselective Nucleophilic Vinylic Substitution (S NV) toward 3-Alkenyl-bisoxindoles Facilitated by C6' Steric Bulk of Cinchona Alkaloid. Org Lett 2023; 25:5941-5945. [PMID: 37535818 DOI: 10.1021/acs.orglett.3c01964] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/05/2023]
Abstract
A C6' bulky substituted quinine-catalyzed SNV reaction between 3-substituted oxindole and (E)-3-(nitromethylene)-oxindole was developed. This enantioselective C(sp3)-C(sp2) coupling furnished bisoxindole scaffolds featuring a vinyl-substituted all-carbon quaternary stereocenter with high stereoselectivities. In addition, the gram-scale synthesis and synthetic post-transformations were conducted to demonstrate the potential synthetic usefulness.
Collapse
Affiliation(s)
- Xingyue Wang
- College of Pharmaceutical Science and Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, China
| | - Guishun Bai
- College of Pharmaceutical Science and Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, China
| | - Ruoqi Liu
- College of Pharmaceutical Science and Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, China
| | - Xiaoli Zhu
- College of Pharmaceutical Science and Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, China
| | - Xinyi Ye
- College of Pharmaceutical Science and Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, China
| | - Tao Zhang
- Shaoxing Minsheng Pharmaceutical Co., Ltd, Shaoxing 312071, China
| | - Kui Zhang
- Shaoxing Minsheng Pharmaceutical Co., Ltd, Shaoxing 312071, China
| | - Damien Bonne
- Aix Marseille University, CNRS, Centrale Marseille, iSm2, 13013 Marseille, France
| | - Jean Rodriguez
- Aix Marseille University, CNRS, Centrale Marseille, iSm2, 13013 Marseille, France
| | - Hong Wang
- College of Pharmaceutical Science and Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, China
| | - Xiaoze Bao
- College of Pharmaceutical Science and Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, China
| |
Collapse
|
5
|
Wang X, Yang R, Zhu B, Liu Y, Song H, Dong J, Wang Q. Direct allylic acylation via cross-coupling involving cooperative N‑heterocyclic carbene, hydrogen atom transfer, and photoredox catalysis. Nat Commun 2023; 14:2951. [PMID: 37221185 DOI: 10.1038/s41467-023-38743-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Accepted: 05/10/2023] [Indexed: 05/25/2023] Open
Abstract
Herein, we report a mild, operationally simple, multicatalytic method for the synthesis of β,γ-unsaturated ketones via allylic acylation of alkenes. Specifically, the method combines N‑heterocyclic carbene catalysis, hydrogen atom transfer catalysis, and photoredox catalysis for cross-coupling reactions between a wide range of feedstock carboxylic acids and readily available olefins to afford structurally diverse β,γ-unsaturated ketones without olefin transposition. The method could be used to install acyl groups on highly functionalized natural-product-derived compounds with no need for substrate pre-activation, and C-H functionalization proceed with excellent site selectivity. To demonstrate the potential applications of the method, we convert a representative coupling product into various useful olefin synthons.
Collapse
Affiliation(s)
- Xiaochen Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, 300071, Tianjin, China
| | - Rongxin Yang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, 300071, Tianjin, China
| | - Binbing Zhu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, 300071, Tianjin, China
| | - Yuxiu Liu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, 300071, Tianjin, China
| | - Hongjian Song
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, 300071, Tianjin, China
| | - Jianyang Dong
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, 300071, Tianjin, China
| | - Qingmin Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, 300071, Tianjin, China.
| |
Collapse
|
6
|
Wang Y, Wang S, Wu Y, Zhao T, Liu J, Zheng J, Wang L, Lv J, Zhang T. Fast, highly enantioselective, and sustainable fluorination of 4-substituted pyrazolones catalyzed by amide-based phase-transfer catalysts. Org Chem Front 2023. [DOI: 10.1039/d3qo00269a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
Abstract
Highly enantioselective and sustainable fluorination of 4-substituted pyrazolones has been developed by amide-based phase-transfer catalysts.
Collapse
Affiliation(s)
- Yakun Wang
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| | - Shuaifei Wang
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| | - Yufeng Wu
- School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning 116024, P.R. China
| | - Ting Zhao
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning 117004, P.R. China
| | - Jie Liu
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| | - Junlin Zheng
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| | - Lin Wang
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| | - Jieli Lv
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| | - Tao Zhang
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| |
Collapse
|
7
|
He C, Tang X, He X, Zhou Y, Liu X, Feng X. Regio- and enantioselective conjugate addition of β-nitro α,β-unsaturated carbonyls to construct 3-alkenyl disubstituted oxindoles. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.05.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
8
|
Xiong P, Hemming M, Ivlev SI, Meggers E. Electrochemical Enantioselective Nucleophilic α-C(sp 3)-H Alkenylation of 2-Acyl Imidazoles. J Am Chem Soc 2022; 144:6964-6971. [PMID: 35385651 DOI: 10.1021/jacs.2c01686] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Merging electrochemistry with asymmetric catalysis promises to provide an environmentally friendly and efficient strategy for the construction of nonracemic chiral molecules. However, in practice, significant challenges arise from the instability or incompatibility of the chiral catalysts under the electrochemical conditions at the interface of electrode and solution. Herein, we report a catalytic asymmetric indirect electrolysis employing the combination of a redox mediator and a chiral-at-rhodium Lewis acid, which achieves a previously elusive enantioselective nucleophilic α-C(sp3)-H alkenylation of ketones. Specifically, 2-acyl imidazoles react with potassium alkenyl trifluoroborates in high yields (up to 94%) and with exceptional enantioselectivities (27 examples with ≥99% ee) without the need for any additional stoichiometric oxidants (overall 40 examples). The new indirect electrosynthesis can be scaled to gram quantities and was applied to the straightforward synthesis of intermediates of the natural product cryptophycin A and a cathepsin K inhibitor.
Collapse
Affiliation(s)
- Peng Xiong
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35043 Marburg, Germany
| | - Marcel Hemming
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35043 Marburg, Germany
| | - Sergei I Ivlev
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35043 Marburg, Germany
| | - Eric Meggers
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35043 Marburg, Germany
| |
Collapse
|
9
|
Visible light-promoted enantioselective aerobic oxidation of pyrazolones by phase transfer catalysis. GREEN SYNTHESIS AND CATALYSIS 2021. [DOI: 10.1016/j.gresc.2021.11.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
|
10
|
Haughey MB, Christensen KE, Poole DL, Donohoe TJ. Development of an enolate alkynylation approach towards the synthesis of the taiwanschirin natural products. Chem Sci 2021; 12:13392-13397. [PMID: 34777757 PMCID: PMC8528008 DOI: 10.1039/d1sc04247e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 09/14/2021] [Indexed: 11/26/2022] Open
Abstract
Through the use of model studies, an approach was conceived towards the synthesis of the taiwanschirin family of natural products. These are structurally complex compounds which represent highly challenging and biologically active targets for total synthesis. This work describes a successful synthesis of the complex taiwanschirin fused [8,6,5] core through a novel alkynylation reaction coupled with an intramolecular Heck reaction used to construct the 8-membered ring.
Collapse
Affiliation(s)
- Maxwell B Haughey
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory Mansfield Road Oxford OX1 3TA UK
| | - Kirsten E Christensen
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory Mansfield Road Oxford OX1 3TA UK
| | - Darren L Poole
- GlaxoSmithKline Medicines Research Centre Stevenage SG1 2NY UK
| | - Timothy J Donohoe
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory Mansfield Road Oxford OX1 3TA UK
| |
Collapse
|
11
|
Bencivenni G, Salazar Illera D, Moccia M, Houk KN, Izzo JA, Novacek J, Grieco P, Vetticatt MJ, Waser M, Adamo MFA. Study of Ground State Interactions of Enantiopure Chiral Quaternary Ammonium Salts and Amides, Nitroalkanes, Nitroalkenes, Esters, Heterocycles, Ketones and Fluoroamides. Chemistry 2021; 27:11352-11366. [PMID: 33963788 PMCID: PMC8453964 DOI: 10.1002/chem.202100908] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Indexed: 11/21/2022]
Abstract
Chiral phase-transfer catalysis provides high level of enantiocontrol, however no experimental data showed the interaction of catalysts and substrates. 1 H NMR titration was carried out on Cinchona and Maruoka ammonium bromides vs. nitro, carbonyl, heterocycles, and N-F containing compounds. It was found that neutral organic species and quaternary ammonium salts interacted via an ensemble of catalyst + N-C-H and (sp2 )C-H, specific for each substrate studied. The correspondent BArF salts interacted with carbonyls via a diverse set of + N-C-H and (sp2 )C-H compared to bromides. This data suggests that BArF ammonium salts may display a different enantioselectivity profile. Although not providing quantitative data for the affinity constants, the data reported proofs that chiral ammonium salts coordinate with substrates, prior to transition state, through specific C-H positions in their structures, providing a new rational to rationalize the origin of enantioselectivity in their catalyses.
Collapse
Affiliation(s)
- Grazia Bencivenni
- Department of ChemistryRCSIUniversity of Medicine and Health Science123 St Stephen's GreenDublin 2, DublinRepublic of Ireland
| | - Diana Salazar Illera
- Department of ChemistryRCSIUniversity of Medicine and Health Science123 St Stephen's GreenDublin 2, DublinRepublic of Ireland
| | - Maria Moccia
- CNR-ICCInstitute of CrystallographyVia G. Amendola 122/O70126BariItaly
| | - K. N. Houk
- Department of Chemistry and BiochemistryUniversity of California, Los AngelesLos AngelesCA 90095-1569USA
| | - Joseph A. Izzo
- Department of ChemistryState University of NY BinghamtonBinghamton, NYUSA
| | - Johanna Novacek
- Institute of Organic ChemistryJohannes Kepler University LinzAltenbergerstrasse 694040LinzAustria
| | - Paolo Grieco
- Faculty of PharmacyUniversity of Naples Federico IICorso Umberto I, 4080138Napoli, NAItaly
| | | | - Mario Waser
- Institute of Organic ChemistryJohannes Kepler University LinzAltenbergerstrasse 694040LinzAustria
| | - Mauro F. A. Adamo
- Department of ChemistryRCSIUniversity of Medicine and Health Science123 St Stephen's GreenDublin 2, DublinRepublic of Ireland
| |
Collapse
|
12
|
Arimitsu S, Iwasa S, Arakaki R. Enantioselective Fluorination of α-Branched β-Ynone Esters Using a Cinchona-Based Phase-Transfer Catalyst. J Org Chem 2020; 85:12804-12812. [PMID: 32955893 DOI: 10.1021/acs.joc.0c01997] [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
Herein, we report the fluorination of α-branched β-ynone esters to afford their corresponding quaternary fluorinated products with good enantioselectivity (ee = 73-90%) using a cinchona-based phase-transfer catalyst. α-Branched β-ynone esters possess a highly acidic α-proton and form their corresponding enolate as a single isomer, which allows the enantioselective fluorination reaction to occur under standard cinchona-based phase-transfer catalyst conditions. Moreover, the obtained α-fluorinated product can be treated with [(SPhos)AuNTf2] (1 mol %) to afford a fluorinated 3,5-diketo carboxylic acid.
Collapse
Affiliation(s)
- Satoru Arimitsu
- Department of Chemistry, Biology and Marine Science, University of the Ryukyus, Senbaru 1, Nakagami, Nishihara, Okinawa 903-0213, Japan
| | - Satsuki Iwasa
- Department of Chemistry, Biology and Marine Science, University of the Ryukyus, Senbaru 1, Nakagami, Nishihara, Okinawa 903-0213, Japan
| | - Ryunosuke Arakaki
- Department of Chemistry, Biology and Marine Science, University of the Ryukyus, Senbaru 1, Nakagami, Nishihara, Okinawa 903-0213, Japan
| |
Collapse
|
13
|
Martinez-Erro S, García-Vázquez V, Sanz-Marco A, Martín-Matute B. Stereospecific Isomerization of Allylic Halides via Ion Pairs with Induced Noncovalent Chirality. Org Lett 2020; 22:4123-4128. [PMID: 32383608 PMCID: PMC7497663 DOI: 10.1021/acs.orglett.0c01200] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Indexed: 11/28/2022]
Abstract
A regioselective protocol for the synthesis of substituted allylic chlorides, bromides, and fluorides has been established. Remarkably, the method can be applied to the enantioselective synthesis of challenging chiral allylic chlorides. When the allylic halides are treated with the base triazabicyclodecene as the catalyst, a [1,3]-proton shift takes place, giving the corresponding vinyl halides in excellent yields with excellent Z:E ratios. Furthermore, the [1,3]-proton shift takes place with an outstanding level of chirality transfer from chiral allylic alcohols (≤98%) to give chiral trifluoromethylated vinyl chlorides.
Collapse
Affiliation(s)
| | | | - Amparo Sanz-Marco
- Department of Organic Chemistry, Stockholm University, Stockholm 10691, Sweden
| | - Belén Martín-Matute
- Department of Organic Chemistry, Stockholm University, Stockholm 10691, Sweden
| |
Collapse
|
14
|
Chou H, Leow D, Tan C. Recent Advances in Chiral Guanidine‐Catalyzed Enantioselective Reactions. Chem Asian J 2019; 14:3803-3822. [DOI: 10.1002/asia.201901183] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 09/27/2019] [Indexed: 12/11/2022]
Affiliation(s)
- Hsiao‐Chieh Chou
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University 21 Nanyang Link Singapore 637371 Singapore
| | - Dasheng Leow
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University 21 Nanyang Link Singapore 637371 Singapore
| | - Choon‐Hong Tan
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University 21 Nanyang Link Singapore 637371 Singapore
| |
Collapse
|
15
|
Li D, Wang L, Yang Y, Zhang M, Peng T, Yang D, Wang R. Construction of Optically Active 2H‐ and 3H‐Pyrroles by Cyclization and Chirality Maintaining1,5‐Ester Shift Reactions. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900481] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Dan Li
- Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical SciencesLanzhou University Lanzhou 730000 People's Republic of China
| | - Linqing Wang
- Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical SciencesLanzhou University Lanzhou 730000 People's Republic of China
| | - Yuling Yang
- Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical SciencesLanzhou University Lanzhou 730000 People's Republic of China
| | - Minmin Zhang
- Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical SciencesLanzhou University Lanzhou 730000 People's Republic of China
| | - Tianyu Peng
- Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical SciencesLanzhou University Lanzhou 730000 People's Republic of China
| | - Dongxu Yang
- Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical SciencesLanzhou University Lanzhou 730000 People's Republic of China
| | - Rui Wang
- Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical SciencesLanzhou University Lanzhou 730000 People's Republic of China
- State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou 730000 People's Republic of China
| |
Collapse
|
16
|
Wang Y, Li Y, Lian M, Zhang J, Liu Z, Tang X, Yin H, Meng Q. Asymmetric α-alkylation of cyclic β-keto esters and β-keto amides by phase-transfer catalysis. Org Biomol Chem 2019; 17:573-584. [DOI: 10.1039/c8ob02669f] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A facile and efficient asymmetric α-alkylation of β-keto esters and β-keto amides has been achieved by phase-transfer catalysis.
Collapse
Affiliation(s)
- Yakun Wang
- School of Pharmacy
- Xinxiang Medical University
- Xinxiang
- PR China
| | - Yueyun Li
- Xinxiang Central Hospital
- Xinxiang Medical University
- Xinxiang
- PR China
| | - Mingming Lian
- Department of Pharmaceutics
- Daqing Campus
- Harbin Medical University
- Daqing
- P. R. China
| | - Jixia Zhang
- School of Pharmacy
- Xinxiang Medical University
- Xinxiang
- PR China
| | - Zhaomin Liu
- School of Pharmacy
- Xinxiang Medical University
- Xinxiang
- PR China
| | - Xiaofei Tang
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian
- P. R. China
| | - Hang Yin
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian
- P. R. China
| | - Qingwei Meng
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian
- P. R. China
| |
Collapse
|
17
|
Li B, Gao W, Li H, Zhang S, Han X, Lu J, Liang R, Hong X, Jia Y. Enantioselective Intramolecular Desymmetric α‐Addition of Cyclohexanone to Propiolamide Catalyzed by Sodium
L
‐Prolinate. CHINESE J CHEM 2018. [DOI: 10.1002/cjoc.201800420] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Bao‐Le Li
- College of Chemical Engineering, State Key Laboratory Breeding Base of Green‐Chemical Synthesis TechnologyZhejiang University of Technology Hangzhou Zhejiang 310014 China
| | - Wei‐Yang Gao
- College of Chemical Engineering, State Key Laboratory Breeding Base of Green‐Chemical Synthesis TechnologyZhejiang University of Technology Hangzhou Zhejiang 310014 China
| | - Han Li
- Department of ChemistryZhejiang University Hangzhou Zhejiang 310027 China
| | - Shuo‐Qing Zhang
- Department of ChemistryZhejiang University Hangzhou Zhejiang 310027 China
| | - Xiao‐Qing Han
- College of Chemical Engineering, State Key Laboratory Breeding Base of Green‐Chemical Synthesis TechnologyZhejiang University of Technology Hangzhou Zhejiang 310014 China
| | - Jun Lu
- College of Chemical Engineering, State Key Laboratory Breeding Base of Green‐Chemical Synthesis TechnologyZhejiang University of Technology Hangzhou Zhejiang 310014 China
| | - Ren‐Xiao Liang
- College of Chemical Engineering, State Key Laboratory Breeding Base of Green‐Chemical Synthesis TechnologyZhejiang University of Technology Hangzhou Zhejiang 310014 China
| | - Xin Hong
- Department of ChemistryZhejiang University Hangzhou Zhejiang 310027 China
| | - Yi‐Xia Jia
- College of Chemical Engineering, State Key Laboratory Breeding Base of Green‐Chemical Synthesis TechnologyZhejiang University of Technology Hangzhou Zhejiang 310014 China
- Shanghai Key Laboratory for Molecular Engineering of Chiral DrugsShanghai Jiao Tong University 800 Dongchuan Road, Shanghai 200240 China
| |
Collapse
|
18
|
Takagi R, Fujii E, Kondo H. Enantioselective Michael Reaction of Cyclic β-Ketoesters with Morita-Baylis-Hillman Derivatives Using a Phase-Transfer Catalyst. J Org Chem 2018; 83:11191-11203. [PMID: 30130106 DOI: 10.1021/acs.joc.8b01777] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
This study aims to develop a highly enantioselective Michael reaction of cyclic β-ketoesters with Morita-Baylis-Hillman (MBH) derivatives using a phase-transfer catalyst. Cyclic β-ketoesters reacted with MBH derivatives to stereoselectively generate a quaternary carbon center in the presence of cinchona alkaloid-derived bulky ammonium catalyst, and aqueous KOH and Michael adducts bearing an acrylate moiety were obtained in good chemical yields with good enantioselectivity.
Collapse
Affiliation(s)
- Ryukichi Takagi
- Department of Chemistry, Graduate School of Science , Hiroshima University , 1-3-1 Kagamiyama , Higashi-Hiroshima 739-8526 , Japan
| | - Emi Fujii
- Department of Chemistry, Graduate School of Science , Hiroshima University , 1-3-1 Kagamiyama , Higashi-Hiroshima 739-8526 , Japan
| | - Hirotoshi Kondo
- Department of Chemistry, Graduate School of Science , Hiroshima University , 1-3-1 Kagamiyama , Higashi-Hiroshima 739-8526 , Japan
| |
Collapse
|
19
|
Zhu Y, Han J, Wang J, Shibata N, Sodeoka M, Soloshonok VA, Coelho JAS, Toste FD. Modern Approaches for Asymmetric Construction of Carbon-Fluorine Quaternary Stereogenic Centers: Synthetic Challenges and Pharmaceutical Needs. Chem Rev 2018; 118:3887-3964. [PMID: 29608052 DOI: 10.1021/acs.chemrev.7b00778] [Citation(s) in RCA: 423] [Impact Index Per Article: 70.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
New methods for preparation of tailor-made fluorine-containing compounds are in extremely high demand in nearly every sector of chemical industry. The asymmetric construction of quaternary C-F stereogenic centers is the most synthetically challenging and, consequently, the least developed area of research. As a reflection of this apparent methodological deficit, pharmaceutical drugs featuring C-F stereogenic centers constitute less than 1% of all fluorine-containing medicines currently on the market or in clinical development. Here we provide a comprehensive review of current research activity in this area, including such general directions as asymmetric electrophilic fluorination via organocatalytic and transition-metal catalyzed reactions, asymmetric elaboration of fluorine-containing substrates via alkylations, Mannich, Michael, and aldol additions, cross-coupling reactions, and biocatalytic approaches.
Collapse
Affiliation(s)
- Yi Zhu
- School of Chemistry and Chemical Engineering, State Key laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials , Nanjing University , 210093 Nanjing , China
| | - Jianlin Han
- School of Chemistry and Chemical Engineering, State Key laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials , Nanjing University , 210093 Nanjing , China
| | - Jiandong Wang
- Department of Nanopharmaceutical Sciences & Department of Frontier Materials , Nagoya Institute of Technology , Gokiso, Showa-ku , Nagoya 466-8555 , Japan
| | - Norio Shibata
- Department of Nanopharmaceutical Sciences & Department of Frontier Materials , Nagoya Institute of Technology , Gokiso, Showa-ku , Nagoya 466-8555 , Japan
| | - Mikiko Sodeoka
- Synthetic Organic Chemistry Laboratory , RIKEN, and RIKEN Center for Sustainable Resourse Science , 2-1 Hirosawa , Wako 351-0198 , Japan
| | - Vadim A Soloshonok
- Department of Organic Chemistry I, Faculty of Chemistry , University of the Basque Country UPV/EHU , 20018 San Sebastian , Spain.,IKERBASQUE, Basque Foundation for Science , 48011 Bilbao , Spain
| | - Jaime A S Coelho
- Department of Chemistry , University of California , Berkeley , California 94720 , United States
| | - F Dean Toste
- Department of Chemistry , University of California , Berkeley , California 94720 , United States
| |
Collapse
|
20
|
Patil M. Stereocontrol through Synergistic Catalysis in the Enantioselective α-Alkenylation of Aldehyde: A Computational Study. J Org Chem 2018; 83:1304-1311. [DOI: 10.1021/acs.joc.7b02822] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mahendra Patil
- UM-DAE Centre for Excellence
in Basic Sciences, Health Centre, University of Mumbai, Vidyanagari
Campus, Kalina, Santacruz (East), Mumbai 400098, India
| |
Collapse
|
21
|
De Simone NA, Schettini R, Talotta C, Gaeta C, Izzo I, Della Sala G, Neri P. Directing the Cation Recognition Ability of Calix[4]arenes toward Asymmetric Phase-Transfer Catalysis. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700912] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Nicola Alessandro De Simone
- Dipartimento di Chimica e Biologia “A. Zambelli”; Università di Salerno; Via Giovanni Paolo II 132 84084 Fisciano (Salerno) Italy
| | - Rosaria Schettini
- Dipartimento di Chimica e Biologia “A. Zambelli”; Università di Salerno; Via Giovanni Paolo II 132 84084 Fisciano (Salerno) Italy
| | - Carmen Talotta
- Dipartimento di Chimica e Biologia “A. Zambelli”; Università di Salerno; Via Giovanni Paolo II 132 84084 Fisciano (Salerno) Italy
| | - Carmine Gaeta
- Dipartimento di Chimica e Biologia “A. Zambelli”; Università di Salerno; Via Giovanni Paolo II 132 84084 Fisciano (Salerno) Italy
| | - Irene Izzo
- Dipartimento di Chimica e Biologia “A. Zambelli”; Università di Salerno; Via Giovanni Paolo II 132 84084 Fisciano (Salerno) Italy
| | - Giorgio Della Sala
- Dipartimento di Chimica e Biologia “A. Zambelli”; Università di Salerno; Via Giovanni Paolo II 132 84084 Fisciano (Salerno) Italy
| | - Placido Neri
- Dipartimento di Chimica e Biologia “A. Zambelli”; Università di Salerno; Via Giovanni Paolo II 132 84084 Fisciano (Salerno) Italy
| |
Collapse
|
22
|
Choudhury AR, Manna MS, Mukherjee S. Nitro-enabled catalytic enantioselective formal umpolung alkenylation of β-ketoesters. Chem Sci 2017; 8:6686-6690. [PMID: 28989696 PMCID: PMC5625255 DOI: 10.1039/c7sc02232h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Accepted: 07/30/2017] [Indexed: 01/10/2023] Open
Abstract
A formal umpolung strategy is presented for the enantioselective installation of an alkenyl group with a terminal double bond at a tertiary center. This one-pot two-step sequence relies on the unique features of the nitro group, which after inverting the polarity of the alkenylating agent toward the desired bond formation, itself serves as a leaving group. The application of this protocol to cyclic β-ketoesters results in densely functionalized products, bearing an all-carbon quaternary stereocenter including an alkenyl substituent with a terminal double bond, in high yields with excellent enantioselectivities.
Collapse
Affiliation(s)
- Abhijnan Ray Choudhury
- Department of Organic Chemistry , Indian Institute of Science , Bangalore 560 012 , India . ; ; Tel: +91-80-2293-2850
| | - Madhu Sudan Manna
- Department of Organic Chemistry , Indian Institute of Science , Bangalore 560 012 , India . ; ; Tel: +91-80-2293-2850
| | - Santanu Mukherjee
- Department of Organic Chemistry , Indian Institute of Science , Bangalore 560 012 , India . ; ; Tel: +91-80-2293-2850
| |
Collapse
|
23
|
Jin Q, Zheng C, Zhao G, Zou G. Bifunctional Quaternary Ammonium Salts Catalyzed Stereoselective Conjugate Addition of Oxindoles to Electron-Deficient β-Haloalkenes. J Org Chem 2017; 82:4840-4850. [DOI: 10.1021/acs.joc.7b00571] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Qiaowen Jin
- School of Chemistry & Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, China
| | - Changwu Zheng
- Key
Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Gang Zhao
- Key
Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Gang Zou
- School of Chemistry & Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, China
| |
Collapse
|
24
|
Li Y, Ibsen L, Jørgensen KA. Formal Asymmetric α-Alkenylation of Aldehydes and the Synthetic Application toward Forming α-exo-Methylene-γ-butyrolactones and Skipped Dienes. Org Lett 2017; 19:1200-1203. [DOI: 10.1021/acs.orglett.7b00254] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yang Li
- Department of Chemistry, Aarhus University, Langelandsgade
140, DK-8000 Aarhus
C, Denmark
| | - Lise Ibsen
- Department of Chemistry, Aarhus University, Langelandsgade
140, DK-8000 Aarhus
C, Denmark
| | - Karl Anker Jørgensen
- Department of Chemistry, Aarhus University, Langelandsgade
140, DK-8000 Aarhus
C, Denmark
| |
Collapse
|
25
|
Clemenceau A, Wang Q, Zhu J. Enantioselective Synthesis of Quaternary α-Amino Acids Enabled by the Versatility of the Phenylselenonyl Group. Chemistry 2016; 22:18368-18372. [PMID: 27862465 DOI: 10.1002/chem.201604781] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Indexed: 01/04/2023]
Abstract
A novel Cinchona alkaloid-catalyzed enantioselective conjugate addition of α-alkyl substituted α-nitroacetates to phenyl vinyl selenone was developed. The resulting enantio-enriched α,α-dialkyl substituted α-nitroacetates were subsequently converted to various cyclic and acyclic quaternary α-amino acids, taking advantage of the rich functionalities of the resulting Michael adducts. Novel protocols allowing chemoselective reduction of phenyl selenone to phenyl selenide and reduction of alkyl phenyl selenones to alkanes are also reported.
Collapse
Affiliation(s)
- Antonin Clemenceau
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH 5304, 1015, Lausanne, Switzerland
| | - Qian Wang
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH 5304, 1015, Lausanne, Switzerland
| | - Jieping Zhu
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH 5304, 1015, Lausanne, Switzerland
| |
Collapse
|
26
|
Govender T, Arvidsson PI, Maguire GEM, Kruger HG, Naicker T. Enantioselective Organocatalyzed Transformations of β-Ketoesters. Chem Rev 2016; 116:9375-437. [PMID: 27463615 DOI: 10.1021/acs.chemrev.6b00156] [Citation(s) in RCA: 94] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The β-ketoester structural motif continues to intrigue chemists with its electrophilic and nucleophilic sites. Proven to be a valuable tool within organic synthesis, natural product, and medicinal chemistry, reports on chiral β-ketoester molecular skeletons display a steady increase. With the reignition of organocatalysis in the past decade, asymmetric methods available for the synthesis of this structural unit has significantly expanded, making it one of the most exploited substrates for organocatalytic transformations. This review provides comprehensive information on the plethora of organocatalysts used in stereoselective organocatalyzed construction of β-ketoester-containing compounds.
Collapse
Affiliation(s)
- Thavendran Govender
- Catalysis and Peptide Research Unit, University of KwaZulu Natal , Durban, 4001, South Africa
| | - Per I Arvidsson
- Catalysis and Peptide Research Unit, University of KwaZulu Natal , Durban, 4001, South Africa.,P. I. Arvidsson, Science for Life Laboratory, Drug Discovery and Development Platform and Division of Translational Medicine and Chemical Biology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet SE-171 77 Stockholm, Sweden
| | - Glenn E M Maguire
- Catalysis and Peptide Research Unit, University of KwaZulu Natal , Durban, 4001, South Africa
| | - Hendrik G Kruger
- Catalysis and Peptide Research Unit, University of KwaZulu Natal , Durban, 4001, South Africa
| | - Tricia Naicker
- Catalysis and Peptide Research Unit, University of KwaZulu Natal , Durban, 4001, South Africa
| |
Collapse
|
27
|
Tatsumi T, Misaki T, Sugimura T. Organocatalytic 1,4-Addition Reaction of 2-Formyl(thio)esters to Vinylketones: An Efficient Access to Acyclic Chiral Building Blocks with a Quaternary Carbon Stereocenter. Chemistry 2015; 21:18971-4. [PMID: 26555679 DOI: 10.1002/chem.201504479] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Indexed: 11/05/2022]
Abstract
2-Formyl(thio)esters were utilized as pronucleophiles to obtain less-accessible acyclic chiral building blocks bearing versatile functional groups on a quaternary carbon atom for enantioselective 1,4-addition to vinylketones. To achieve high enantioselectivity in the present 1,4-addition reaction, thiourea-tertiary amines containing a bulky chiral backbone were developed as catalysts, and several derivatizations of the products were performed to demonstrate the synthetic utility of the products.
Collapse
Affiliation(s)
- Toshifumi Tatsumi
- Graduate School of Material Science, University of Hyogo, 3-2-1 Kohto, Kamigori, Hyogo 678-1297 (Japan)
| | - Tomonori Misaki
- Graduate School of Material Science, University of Hyogo, 3-2-1 Kohto, Kamigori, Hyogo 678-1297 (Japan).
| | - Takashi Sugimura
- Graduate School of Material Science, University of Hyogo, 3-2-1 Kohto, Kamigori, Hyogo 678-1297 (Japan)
| |
Collapse
|
28
|
Shagun VA, Levkovskaya GG, Popov AV, Rozentsveig IB. A quantum chemical study of unexpected reaction of α-chloroacyl chlorides with 1,2-dichloroethylene in the presence of aluminum chloride. COMPUT THEOR CHEM 2015. [DOI: 10.1016/j.comptc.2015.09.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
29
|
Yang D, Wang L, Kai M, Li D, Yao X, Wang R. Application of a CC Bond-Forming Conjugate Addition Reaction in Asymmetric Dearomatization of β-Naphthols. Angew Chem Int Ed Engl 2015; 54:9523-7. [DOI: 10.1002/anie.201503056] [Citation(s) in RCA: 91] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Revised: 06/03/2015] [Indexed: 12/19/2022]
|
30
|
Yang D, Wang L, Kai M, Li D, Yao X, Wang R. Application of a CC Bond-Forming Conjugate Addition Reaction in Asymmetric Dearomatization of β-Naphthols. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201503056] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
31
|
Uraguchi D, Yamada K, Ooi T. HighlyE-Selective and Enantioselective Michael Addition to Electron-Deficient Internal Alkynes Under Chiral Iminophosphorane Catalysis. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201503928] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
32
|
Uraguchi D, Yamada K, Ooi T. Highly
E
‐Selective and Enantioselective Michael Addition to Electron‐Deficient Internal Alkynes Under Chiral Iminophosphorane Catalysis. Angew Chem Int Ed Engl 2015; 54:9954-7. [DOI: 10.1002/anie.201503928] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Indexed: 11/12/2022]
Affiliation(s)
- Daisuke Uraguchi
- Institute of Transformative Bio‐Molecules (WPI‐ITbM) and Department of Applied Chemistry, Graduate School of Engineering, Nagoya University, Nagoya 464‐8603 (Japan)
| | - Kohei Yamada
- Institute of Transformative Bio‐Molecules (WPI‐ITbM) and Department of Applied Chemistry, Graduate School of Engineering, Nagoya University, Nagoya 464‐8603 (Japan)
| | - Takashi Ooi
- Institute of Transformative Bio‐Molecules (WPI‐ITbM) and Department of Applied Chemistry, Graduate School of Engineering, Nagoya University, Nagoya 464‐8603 (Japan)
- CREST, Japan Science and Technology Agency (JST), Nagoya University, Nagoya 464‐8603 (Japan)
| |
Collapse
|
33
|
Mangawa SK, Singh AK, Awasthi SK. Design and synthesis of a s-triazene based asymmetric organocatalyst and its application in enantioselective alkylation. RSC Adv 2015. [DOI: 10.1039/c5ra11209e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Abstract
A very efficient chiral organocatalyst was prepared from the readily available cyanuric chloride.
Collapse
Affiliation(s)
- Shrawan K. Mangawa
- Chemical Biology Laboratory
- Department of Chemistry
- University of Delhi
- India
| | - Ashawani K. Singh
- Chemical Biology Laboratory
- Department of Chemistry
- University of Delhi
- India
| | - Satish K. Awasthi
- Chemical Biology Laboratory
- Department of Chemistry
- University of Delhi
- India
| |
Collapse
|
34
|
Otani T, Namatame W, Tamai Y. Highly enantioselective Michael addition of 2-alkoxyphenyl esters of α-substituted β-keto acids to non-prochiral α,β-unsaturated carbonyl compounds catalyzed by sodium 2′-[2-(2-methoxyethoxy)ethoxy]-1,1′-binaphthalen-2-oxide. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.10.146] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
35
|
Chiral Co(II) complex catalyzed asymmetric Michael reactions of β-ketoamides to nitroolefins and alkynones. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.05.067] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|
36
|
Asymmetric Phase-Transfer Catalysis as a Powerful Tool in the Synthesis of Biologically Active Chiral Complex Natural Products. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/b978-0-444-63430-6.00014-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
|
37
|
Fernández I, Bickelhaupt FM, Uggerud E. Reactivity in nucleophilic vinylic substitution (S(N)V):S(N)Vπ versus S(N)Vσ mechanistic dichotomy. J Org Chem 2013; 78:8574-84. [PMID: 23915397 DOI: 10.1021/jo401242f] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The intrinsic electronic factors that determine reactivity in prototypical identity nucleophilic vinylic substitution reactions, X(-) + ViX → XVi + X(-) (Vi = vinyl), have been studied by performing quantum chemical calculations (OPBE/6-311++G(d,p)). Of the two limiting reaction types envisaged--the S(N)Vπ and S(N)Vσ mechanisms--the former is preferred for most combinations of nucleophiles and substrates, except for the combination of unactivated substrates and poor nucleophiles, as seen for the much studied reactions Cl(-) + CH2CHCl and Br(-) + CH2CHBr. It was found that periodic trends for S(N)Vπ are essentially the same as those previously reported for nucleophilic aromatic substitution, S(N)Ar, while intrinsic S(N)Vσ nucleophilicity parallels aliphatic S(N)2. It is therefore concluded that S(N)V reactivity in general can be understood in terms of this mechanistic dichotomy. Furthermore, a few representative reactions were analyzed applying two complementary schemes for energy decomposition analysis.
Collapse
Affiliation(s)
- Israel Fernández
- Departamento de Química Orgánica, Facultad de Química, Universidad Complutense, 28040-Madrid, Spain
| | | | | |
Collapse
|
38
|
Stevens JM, MacMillan DWC. Enantioselective α-alkenylation of aldehydes with boronic acids via the synergistic combination of copper(II) and amine catalysis. J Am Chem Soc 2013; 135:11756-9. [PMID: 23889497 DOI: 10.1021/ja406356c] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The enantioselective α-alkenylation of aldehydes has been accomplished using boronic acids via the synergistic combination of copper and chiral amine catalysis. The merger of two highly utilized and robust catalytic systems has allowed for the development of a mild and operationally trivial protocol for the direct formation of α-formyl olefins employing common building blocks for organic synthesis.
Collapse
Affiliation(s)
- Jason M Stevens
- Merck Center for Catalysis at Princeton University, Princeton, New Jersey 08544, USA
| | | |
Collapse
|
39
|
Wang Z, Zhang Z, Yao Q, Liu X, Cai Y, Lin L, Feng X. Highly Stereoselective Conjugate Addition and α-Alkynylation Reaction with Electron-Deficient Alkynes Catalyzed by Chiral Scandium(III) Complexes. Chemistry 2013; 19:8591-6. [DOI: 10.1002/chem.201300816] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2013] [Indexed: 11/12/2022]
|
40
|
Kano T, Hayashi Y, Maruoka K. Construction of a chiral quaternary carbon center by catalytic asymmetric alkylation of 2-arylcyclohexanones under phase-transfer conditions. J Am Chem Soc 2013; 135:7134-7. [PMID: 23634801 DOI: 10.1021/ja403340r] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In this paper, we present an asymmetric alkylation of modified 2-arylcyclohexanones that employs a novel chiral ammonium bromide as a phase-transfer catalyst and an achiral auxiliary as a controller to improve the enantioselectivity to afford optically enriched products having a chiral quaternary carbon center.
Collapse
Affiliation(s)
- Taichi Kano
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
| | | | | |
Collapse
|
41
|
Luo J, Wu W, Xu LW, Meng Y, Lu Y. Enantioselective direct fluorination and chlorination of cyclic β-ketoesters mediated by phase-transfer catalysts. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.03.028] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
42
|
Zhang H, Liu Y, Chen R, Xue J, Li Y, Tang Y. Metal-Free Coupling of 3-Alkenyl Oxoindoles by Nucleophilic Vinylic Substitution of Nitroolefins. ASIAN J ORG CHEM 2013. [DOI: 10.1002/ajoc.201300032] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
43
|
Shirakawa S, Maruoka K. Neue Entwicklungen bei asymmetrischen Phasentransferreaktionen. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201206835] [Citation(s) in RCA: 139] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
44
|
Shirakawa S, Maruoka K. Recent developments in asymmetric phase-transfer reactions. Angew Chem Int Ed Engl 2013; 52:4312-48. [PMID: 23450630 DOI: 10.1002/anie.201206835] [Citation(s) in RCA: 529] [Impact Index Per Article: 48.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2012] [Indexed: 11/09/2022]
Abstract
Phase-transfer catalysis has been recognized as a powerful method for establishing practical protocols for organic synthesis, because it offers several advantages, such as operational simplicity, mild reaction conditions, suitability for large-scale synthesis, and the environmentally benign nature of the reaction system. Since the pioneering studies on highly enantioselective alkylations promoted by chiral phase-transfer catalysts, this research field has served as an attractive area for the pursuit of "green" sustainable chemistry. A wide variety of asymmetric transformations catalyzed by chiral onium salts and crown ethers have been developed for the synthesis of valuable organic compounds in the past several decades, especially in recent years.
Collapse
Affiliation(s)
- Seiji Shirakawa
- Laboratory of Synthetic Organic Chemistry, Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
| | | |
Collapse
|
45
|
Kang G, Wu Q, Liu M, Xu Q, Chen Z, Chen W, Luo Y, Ye W, Jiang J, Wu H. Catalytic Stereoselective Conjugate Addition of Oxindole to Electron-Deficient Alkynes. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201200715] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
46
|
Moss TA, Barber DM, Kyle AF, Dixon DJ. Catalytic asymmetric alkylation reactions for the construction of protected ethylene-amino and propylene-amino motifs attached to quaternary stereocentres. Chemistry 2013; 19:3071-81. [PMID: 23335289 DOI: 10.1002/chem.201203825] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2012] [Indexed: 11/09/2022]
Abstract
An efficient catalytic and stereoselective method for the direct construction of protected ethylene-amino and propylene-amino scaffolds attached to quaternary stereocentres is reported. Preliminary investigations revealed a mild base catalysed nucleophilic ring opening of N-sulfonyl aziridines using the commercially available phosphazene base 2-tert-butylimino-2-diethylamino-1,3-dimethyl-perhydro-1,3,2-diazaphosphorine (BEMP) was possible and resulted in highly efficient alkylation reactions with a range of methine carbon acids. This reaction could be rendered highly asymmetric (up to 97% ee) by employing phase-transfer catalysis to control stereoinduction. Incorporation of alkyl substituents onto the aziridine electrophile, resulted in a highly diastereoselective (up to 30:1 d.r.) variant of this methodology. A further extension using N-protected cyclic sulfamidates as the electrophilic component was successful with a range of pro-nucleophiles (up to 96% ee and 45:1 d.r.) and allowed a range of nitrogen protecting groups (carbamate, sulfonyl, phosphonyl, benzyl) to be incorporated into the alkylation adducts. Finally, the utility of the products have been demonstrated in the synthesis of useful heterocycles and compounds bearing structural components of natural products.
Collapse
Affiliation(s)
- Thomas A Moss
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | | | | | | |
Collapse
|
47
|
Yao H, Lian M, Li Z, Wang Y, Meng Q. Asymmetric Direct α-Hydroxylation of β-Oxo Esters Catalyzed by Chiral Quaternary Ammonium Salts Derived from Cinchona Alkaloids. J Org Chem 2012; 77:9601-8. [DOI: 10.1021/jo3016242] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hongjie Yao
- State Key Laboratory of Fine Chemicals, School of Pharmaceutical
Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Mingming Lian
- State Key Laboratory of Fine Chemicals, School of Pharmaceutical
Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Zhi Li
- State Key Laboratory of Fine Chemicals, School of Pharmaceutical
Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Yakun Wang
- State Key Laboratory of Fine Chemicals, School of Pharmaceutical
Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Qingwei Meng
- State Key Laboratory of Fine Chemicals, School of Pharmaceutical
Science and Technology, Dalian University of Technology, Dalian 116024, China
| |
Collapse
|
48
|
Datta B, Pasha MA. Glycine catalyzed convenient synthesis of 2-amino-4H-chromenes in aqueous medium under sonic condition. ULTRASONICS SONOCHEMISTRY 2012; 19:725-728. [PMID: 22325141 DOI: 10.1016/j.ultsonch.2012.01.006] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2011] [Revised: 12/20/2011] [Accepted: 01/05/2012] [Indexed: 05/31/2023]
Abstract
A one-pot three-component condensation of an aldehyde, malononitrile, and resorcinol has been achieved by ultrasound method. The reaction has been catalyzed by glycine in aqueous medium. This protocol afforded corresponding 2-amino-4H-chromenes in shorter reaction times, high yields and simple work-up procedures with the green aspects by avoiding toxic reagents.
Collapse
Affiliation(s)
- Bandita Datta
- Department of Studies in Chemistry, Bangalore University, Central College Campus, Palace Road, Bengaluru 560001, India
| | | |
Collapse
|
49
|
Lian M, Li Z, Cai Y, Meng Q, Gao Z. Enantioselective Photooxygenation of β-Keto Esters by Chiral Phase-Transfer Catalysis using Molecular Oxygen. Chem Asian J 2012; 7:2019-23. [DOI: 10.1002/asia.201200358] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2012] [Indexed: 11/08/2022]
|
50
|
Skucas E, MacMillan DWC. Enantioselective α-vinylation of aldehydes via the synergistic combination of copper and amine catalysis. J Am Chem Soc 2012; 134:9090-3. [PMID: 22616631 PMCID: PMC3415571 DOI: 10.1021/ja303116v] [Citation(s) in RCA: 148] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The enantioselective α-vinylation of aldehydes using vinyl iodonium triflate salts has been accomplished via the synergistic combination of copper and chiral amine catalysis. These mild catalytic conditions provide a direct route for the enantioselective construction of enolizable α-formyl vinylic stereocenters without racemization or olefin transposition. These high-value coupling adducts are readily converted into a variety of useful olefin synthons.
Collapse
Affiliation(s)
- Eduardas Skucas
- Merck Center for Catalysis at Princeton University, Princeton, New Jersey 08544
| | | |
Collapse
|