1
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Liu B, Zhou X, Liu Q, Yang Z, Mao Y, He Q, Zhang T, Kong X, Zhang J, Liao W, Tang L. Carbene-Catalyzed [4+2] Cycloaddition of Cyclobutenones and Isatins for Quick Access to Chiral Chlorine-Containing Spirocyclic δ-Lactones. J Org Chem 2024; 89:7286-7294. [PMID: 38696309 DOI: 10.1021/acs.joc.4c00295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/04/2024]
Abstract
Here we report a carbene-catalyzed enantio- and diastereoselective [4+2] cycloaddition reaction of cyclobutenones with isatins for the quick and efficient synthesis of spirocyclic δ-lactones bearing a chiral chlorine. A broad range of substrates with various substitution patterns proceed smoothly in this reaction, with the spirooxindole δ-lactone products afforded in generally good to excellent yields and optical purities under mild reaction conditions.
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Affiliation(s)
- Bin Liu
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, School of Pharmacy, Guizhou Medical University, Guiyang 550004, China
| | - Xian Zhou
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, School of Pharmacy, Guizhou Medical University, Guiyang 550004, China
| | - Qinqin Liu
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, School of Pharmacy, Guizhou Medical University, Guiyang 550004, China
| | - Zaihui Yang
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, School of Pharmacy, Guizhou Medical University, Guiyang 550004, China
| | - Yuanhu Mao
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, School of Pharmacy, Guizhou Medical University, Guiyang 550004, China
| | - Qing He
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, School of Pharmacy, Guizhou Medical University, Guiyang 550004, China
| | - Tianyuan Zhang
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, School of Pharmacy, Guizhou Medical University, Guiyang 550004, China
| | - Xiangkai Kong
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, School of Pharmacy, Guizhou Medical University, Guiyang 550004, China
| | - Jiquan Zhang
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, School of Pharmacy, Guizhou Medical University, Guiyang 550004, China
| | - Weike Liao
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, School of Pharmacy, Guizhou Medical University, Guiyang 550004, China
| | - Lei Tang
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, School of Pharmacy, Guizhou Medical University, Guiyang 550004, China
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2
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Mdluli V, Lehnherr D, Lam YH, Chaudhry MT, Newman JA, DaSilva JO, Regalado EL. Electrosynthesis of iminophosphoranes and applications in nickel catalysis. Chem Sci 2024; 15:5980-5992. [PMID: 38665537 PMCID: PMC11041257 DOI: 10.1039/d3sc05357a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Accepted: 03/06/2024] [Indexed: 04/28/2024] Open
Abstract
P(v) iminophosphorane compounds are accessed via electrochemical oxidation of commercially available P(iii) phosphines, including mono-, di- and tri-dentate phosphines, as well as chiral phosphines. The reaction uses inexpensive bis(trimethylsilyl)carbodiimide as an efficient and safe aminating reagent. DFT calculations, cyclic voltammetry, and NMR studies provide insight into the reaction mechanism. The proposed mechanism reveals a special case of sequential paired electrolysis. DFT calculations of the frontier orbitals of an iminophosphorane are compared with those of the analogous phosphines and phosphine oxides. X-ray crystallographic studies of the ligands as well as a Ni-coordination complex provide structural insight for these ligands. The utility of these iminophosphoranes as ligands is demonstrated in nickel-catalyzed cross-electrophile couplings including C(sp2)-C(sp3) and C(sp2)-C(sp2) couplings, an electrochemically driven C-N cross-coupling, and a photochemical arylative C(sp3)-H functionalization. In some cases, these new ligands provide improved performance over commonly used sp2-N-based ligands (e.g. 4,4'-di-tert-butyl-2,2'-bipyridine).
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Affiliation(s)
- Velabo Mdluli
- Process Research and Development, Merck & Co., Inc. Rahway New Jersey 07065 USA
| | - Dan Lehnherr
- Process Research and Development, Merck & Co., Inc. Rahway New Jersey 07065 USA
| | - Yu-Hong Lam
- Modeling and Informatics, Merck & Co., Inc. Rahway New Jersey 07065 USA
| | - Mohammad T Chaudhry
- Analytical Research and Development, Merck & Co., Inc. Rahway New Jersey 07065 USA
| | - Justin A Newman
- Analytical Research and Development, Merck & Co., Inc. Rahway New Jersey 07065 USA
| | - Jimmy O DaSilva
- Analytical Research and Development, Merck & Co., Inc. Rahway New Jersey 07065 USA
| | - Erik L Regalado
- Analytical Research and Development, Merck & Co., Inc. Rahway New Jersey 07065 USA
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3
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Liu Y, Bender SG, Sorigue D, Diaz DJ, Ellington AD, Mann G, Allmendinger S, Hyster TK. Asymmetric Synthesis of α-Chloroamides via Photoenzymatic Hydroalkylation of Olefins. J Am Chem Soc 2024; 146:7191-7197. [PMID: 38442365 DOI: 10.1021/jacs.4c00927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2024]
Abstract
Photoenzymatic intermolecular hydroalkylations of olefins are highly enantioselective for chiral centers formed during radical termination but poorly selective for centers set in the C-C bond-forming event. Here, we report the evolution of a flavin-dependent "ene"-reductase to catalyze the coupling of α,α-dichloroamides with alkenes to afford α-chloroamides in good yield with excellent chemo- and stereoselectivity. These products can serve as linchpins in the synthesis of pharmaceutically valuable motifs. Mechanistic studies indicate that radical formation occurs by exciting a charge-transfer complex templated by the protein. Precise control over the orientation of molecules within the charge-transfer complex potentially accounts for the observed stereoselectivity. The work expands the types of motifs that can be prepared using photoenzymatic catalysis.
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Affiliation(s)
- Yi Liu
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Sophie G Bender
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Damien Sorigue
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
- Aix-Marseille University, CEA, CNRS, Institute of Biosciences and Biotechnologies, BIAM Cadarache, 13108 Saint-Paul-lez-Durance, France
| | - Daniel J Diaz
- Department of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
- Institute for Foundations of Machine Learning, University of Texas at Austin, Austin, Texas 78712, United States
| | - Andrew D Ellington
- Department of Molecular Bioscience, University of Texas at Austin, Austin, Texas 78712, United States
| | - Greg Mann
- Novartis Pharm. AG, Basel 4002, Switzerland
| | | | - Todd K Hyster
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
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4
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Li Z, Wang B, Zhang C, Lo WY, Yang L, Sun J. Catalytic Enantioselective Nucleophilic α-Chlorination of Ketones with NaCl. J Am Chem Soc 2024; 146:2779-2788. [PMID: 38238317 DOI: 10.1021/jacs.3c12826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
Catalytic enantioselective α-chlorination of ketones is a highly desirable process. Different from the conventional approaches that employ corrosive electrophilic chlorination reagents, the process disclosed here employs nucleophilic chloride, aqueous NaCl solution, and even seawater, as green inexpensive chlorine sources. This mechanistically distinct and electronically opposite approach provides facile access to diverse highly enantioenriched acyclic α-chloro ketones that are less straightforward by conventional approaches. With a chiral thiourea catalyst, a range of racemic α-keto sulfonium salts underwent enantioconvergent carbon-chlorine bond formation with high efficiency and excellent enantioselectivity under mild conditions. The sulfonium motif plays a crucial triple role by permitting smooth dynamic kinetic resolution to take place via a chiral anion binding mechanism in a well-designed phase-transfer system. This protocol represents a new general platform for the asymmetric nucleophilic α-functionalization of carbonyl compounds.
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Affiliation(s)
- Zhiyang Li
- Department of Chemistry and the Hong Kong Branch of Chinese National Engineering Research Centre for Tissue Restoration & Reconstruction, The Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong SAR 999077, China
- Shenzhen Research Institute, HKUST, No. 9 Yuexing First Rd, Shenzhen 518057, China
| | - Baocheng Wang
- Department of Chemistry and the Hong Kong Branch of Chinese National Engineering Research Centre for Tissue Restoration & Reconstruction, The Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong SAR 999077, China
| | - Chaoshen Zhang
- Department of Chemistry and the Hong Kong Branch of Chinese National Engineering Research Centre for Tissue Restoration & Reconstruction, The Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong SAR 999077, China
| | - Wai Yam Lo
- Department of Chemistry and the Hong Kong Branch of Chinese National Engineering Research Centre for Tissue Restoration & Reconstruction, The Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong SAR 999077, China
| | - Liangliang Yang
- Department of Chemistry and the Hong Kong Branch of Chinese National Engineering Research Centre for Tissue Restoration & Reconstruction, The Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong SAR 999077, China
| | - Jianwei Sun
- Department of Chemistry and the Hong Kong Branch of Chinese National Engineering Research Centre for Tissue Restoration & Reconstruction, The Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong SAR 999077, China
- Shenzhen Research Institute, HKUST, No. 9 Yuexing First Rd, Shenzhen 518057, China
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5
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Huang W, Yang J, Gao K, Wang Z, Huang G, Yao W, Yang J. Construction of Enantioenriched Quaternary C-Cl Oxindoles through Palladium-Catalyzed Asymmetric Allylic Substitution with Chloroenolates. J Org Chem 2023; 88:15298-15310. [PMID: 37831540 DOI: 10.1021/acs.joc.3c01811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2023]
Abstract
A palladium-catalyzed asymmetric chloroenolate allylation with vinyl benzoxazinanones under mild reaction conditions has been developed, affording a series of optically active 3,3-disubstituted oxindoles exhibiting a chloro-group and a linear aryl amino side chain in good yields with up to 96% ee. Versatile functional group tolerance on the benzene ring has been demonstrated, and the utility of this method was probed by a scale-up synthesis and highlighted by product derivatizations.
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Affiliation(s)
- Wen Huang
- School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, Zhejiang, P. R. China
- Advanced Research Institute and School of Pharmaceutical Science, Taizhou University, Jiaojiang 318000, Zhejiang, P. R. China
| | - Jingjie Yang
- School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, Zhejiang, P. R. China
- Advanced Research Institute and School of Pharmaceutical Science, Taizhou University, Jiaojiang 318000, Zhejiang, P. R. China
| | - Kai Gao
- Advanced Research Institute and School of Pharmaceutical Science, Taizhou University, Jiaojiang 318000, Zhejiang, P. R. China
| | - Zhiming Wang
- Advanced Research Institute and School of Pharmaceutical Science, Taizhou University, Jiaojiang 318000, Zhejiang, P. R. China
| | - Guobo Huang
- School of Pharmaceutical and Chemical Engineering, Taizhou University, Jiaojiang 318000, Zhejiang, P. R. China
| | - Weijun Yao
- School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, Zhejiang, P. R. China
| | - Jianguo Yang
- Advanced Research Institute and School of Pharmaceutical Science, Taizhou University, Jiaojiang 318000, Zhejiang, P. R. China
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6
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Ikemoto Y, Chiba S, Li Z, Chen Q, Mori H, Nishihara Y. Carboazidation of Terminal Alkenes with Trimethylsilyl Azide and Cyclic Ethers Catalyzed by Copper Powder under Oxidative Conditions. J Org Chem 2023; 88:4472-4480. [PMID: 36947875 DOI: 10.1021/acs.joc.2c03081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/24/2023]
Abstract
Copper-catalyzed carboazidation of alkenes with trimethylsilyl azide and cyclic ethers has been achieved. The employment of naturally abundant copper catalysts allowed cyclic ethers to be used as alkylating reagents under oxidative conditions. The use of styrene derivatives and 1,1-diaryl alkenes afforded carboazidation products. In addition, application of five- and six-membered cyclic ethers to the present reaction gave target organic molecules bearing azide and cyclic ether groups with perfect regioselectivity. Radical trapping and clock experiments revealed that the present reaction proceeded via the radical pathway. To further demonstrate the utility of this carboazidation reaction, transformations from the azide group to the related nitrogen-containing compounds were also performed.
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Affiliation(s)
- Yuichi Ikemoto
- Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Sho Chiba
- Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Zhenyao Li
- Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Qiang Chen
- Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Hiroki Mori
- Research Institute for Interdisciplinary Science, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Yasushi Nishihara
- Research Institute for Interdisciplinary Science, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
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7
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Zheng T, Li Z, Luo Y, Zhang J, Xu J. A direct and efficient 3-halooxidation of indoles using DMSO as oxygen source. Tetrahedron 2023. [DOI: 10.1016/j.tet.2023.133274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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8
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Zhou J, Yang Q, Lee CS, Wang J(J. Enantio‐ and Regioselective Construction of 1,4‐Diamines via Cascade Hydroamination of Methylene Cyclopropanes. Angew Chem Int Ed Engl 2022; 61:e202202160. [DOI: 10.1002/anie.202202160] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Indexed: 12/15/2022]
Affiliation(s)
- Jian Zhou
- Department of Chemistry Hong Kong Baptist University Kowloon, Hong Kong China
- Department of Chemistry Southern University of Science and Technology Shenzhen Guangdong, 518055 China
| | - Qingjing Yang
- Department of Chemistry Southern University of Science and Technology Shenzhen Guangdong, 518055 China
| | - Chi Sing Lee
- Department of Chemistry Hong Kong Baptist University Kowloon, Hong Kong China
| | - Jun (Joelle) Wang
- Department of Chemistry Hong Kong Baptist University Kowloon, Hong Kong China
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9
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Cobo J, Molina S, Sánchez A, Nogueras M, Insuasty B, Orozco‐López F. Reactivity of Pyrimidinylphosphazenes with Acetylenic Esters: Competitive [4+2] and [2+2] Tandem Cycloaddition/Retro‐cycloaddition Approaches. J Heterocycl Chem 2022. [DOI: 10.1002/jhet.4487] [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)
- Justo Cobo
- Departamento de Química Inorgánica y Orgánica Grupo de Investigación en Compuestos de Interés Biológico, Universidad de Jaén Jaén Spain
| | - Sebastián Molina
- Departamento de Química Inorgánica y Orgánica Grupo de Investigación en Compuestos de Interés Biológico, Universidad de Jaén Jaén Spain
| | - Adolfo Sánchez
- Departamento de Química Inorgánica y Orgánica Grupo de Investigación en Compuestos de Interés Biológico, Universidad de Jaén Jaén Spain
| | - Manuel Nogueras
- Departamento de Química Inorgánica y Orgánica Grupo de Investigación en Compuestos de Interés Biológico, Universidad de Jaén Jaén Spain
| | - Braulio Insuasty
- Departamento de Química Grupo de Investigación de Compuestos Heterocíclicos, Universidad del Valle Cali Colombia
| | - Fabián Orozco‐López
- Grupo de Estudios en Síntesis y Aplicaciones de Compuestos Heterocíclicos, Departamento de Química, Universidad Nacional de Colombia Bogotá Colombia
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10
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Zhou J, Yang Q, Lee CS, WANG J. Enantio‐ and Regioselective Construction of 1,4‐diamines via Cascade Hydroamination of Methylene Cyclopropanes. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202202160] [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)
- Jian Zhou
- Hong Kong Baptist University Department of Chemistry HONG KONG
| | - Qingjing Yang
- Southern University of Science and Technology Department of Chemistry CHINA
| | - Chi Sing Lee
- Hong Kong Baptist University Department of Chemistry HONG KONG
| | - Jun WANG
- Hong Kong Baptist University Department of Chemistry Ho Sin Hang Campus 000000 Hong Kong HONG KONG
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11
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Wannenmacher N, Keim N, Frey W, Peters R. Catalytic Asymmetric Chlorination of Isoxazolinones. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
| | - Noah Keim
- University of Stuttgart: Universitat Stuttgart Chemistry GERMANY
| | - Wolfgang Frey
- University of Stuttgart: Universitat Stuttgart Chemistry GERMANY
| | - René Peters
- Universität Stuttgart Institut für Organische Chemie Pfaffenwaldring 55Raum 06.301 70569 Stuttgart GERMANY
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12
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Shan H, Lu C, Zhao B, Yao Y. Asymmetric epoxidation of α,β-unsaturated ketones catalyzed by rare-earth metal amides RE[N(SiMe 3) 2] 3 with chiral TADDOL ligands. NEW J CHEM 2021. [DOI: 10.1039/d0nj05228k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The first application of rare-earth metal catalyst combined with TADDOLs in the asymmetric epoxidation of α,β-unsaturated ketones is disclosed.
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Affiliation(s)
- Haiwen Shan
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
| | - Chengrong Lu
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
| | - Bei Zhao
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
| | - Yingming Yao
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
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13
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Liu Y, Leng H, Li Q, Li J. Catalytic Strategies for the Asymmetric Construction of Cyclic Frameworks with a Halogenated Tetrasubstituted Stereocenter. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000540] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yue Liu
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province Sichuan Industrial Institute of Antibiotics Chengdu University Chengdu 610052 PR China
| | - Hai‐Jun Leng
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province Sichuan Industrial Institute of Antibiotics Chengdu University Chengdu 610052 PR China
| | - Qing‐Zhu Li
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province Sichuan Industrial Institute of Antibiotics Chengdu University Chengdu 610052 PR China
| | - Jun‐Long Li
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province Sichuan Industrial Institute of Antibiotics Chengdu University Chengdu 610052 PR China
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14
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Zhang Y, Wong HN, Wu XY, Han J. Chiral iminophosphorane catalyzed asymmetric sulfenylation of 2-substituted alkylcyanoacetates. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.151755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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15
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Zhang Y, Wu XY, Han J, Wong HN. Chiral iminophosphorane catalyzed asymmetric phenylselenylation of 3-substituted oxindoles. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2019.151559] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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16
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Zhang Y, Wu XY, Han J. Chiral iminophosphorane catalyzed asymmetric Henry reaction of α,β-alkynyl ketoesters. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2019.04.042] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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17
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Zhang L, Wang M, Zhou M, Zhang Z, Muraoka M, Zhang W. Chiral Bicyclic Imidazole‐Catalyzed Direct Enantioselective C‐Acylation for the Synthesis of 2‐Oxindoles Bearing a Quaternary Stereocenter. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900294] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Lu Zhang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs School of PharmacyShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Mo Wang
- School of Chemistry and Chemical EngineeringShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Muxing Zhou
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs School of PharmacyShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Zhenfeng Zhang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs School of PharmacyShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Masahiro Muraoka
- Department of Applied ChemistryOsaka Institute of Technology Ohmiya 5-16-1, Asahi-ku Osaka 535-8585 Japan
| | - Wanbin Zhang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs School of PharmacyShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
- School of Chemistry and Chemical EngineeringShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
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18
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Fang X, Deng Z, Zheng W, Antilla JC. Catalytic One-Pot Double Asymmetric Cascade Reaction: Synthesis of Chlorinated Oxindoles and Geminal Diamines. ACS Catal 2019. [DOI: 10.1021/acscatal.8b05019] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Xiantao Fang
- Institute for Molecular Design and Synthesis, School of Pharmaceutical Science and Technology, Health Science Platform, Tianjin University, Tianjin 300072, P. R. China
| | - Zihang Deng
- Institute for Molecular Design and Synthesis, School of Pharmaceutical Science and Technology, Health Science Platform, Tianjin University, Tianjin 300072, P. R. China
| | - Wenhua Zheng
- School of Chemistry and Chemical Engineering, Nanjing University, Jiangsu 210023, P. R. China
| | - Jon C. Antilla
- Institute for Molecular Design and Synthesis, School of Pharmaceutical Science and Technology, Health Science Platform, Tianjin University, Tianjin 300072, P. R. China
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19
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Han J, Zhang Y, Wu XY, Wong HNC. Chiral iminophosphorane catalyzed asymmetric sulfenylation of 4-substituted pyrazolones. Chem Commun (Camb) 2019; 55:397-400. [DOI: 10.1039/c8cc09049a] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
An excellent level of enantioselectivity in asymmetric sulfenylation of 4-substituted pyrazolones was achieved with chiral iminophosphorane as organocatalyst under the continuum solvation conditions. The use of hydrocarbon solvents enabled to enhance the enantiomeric excesses of the desired 4-phenylthio-pyrazol-5-ones (up to 99% ee).
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Affiliation(s)
- Jianwei Han
- Key Laboratory for Advanced Materials
- Institute of Fine Chemicals
- School of Chemistry & Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
| | - Yanxia Zhang
- Key Laboratory for Advanced Materials
- Institute of Fine Chemicals
- School of Chemistry & Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
| | - Xin-Yan Wu
- Key Laboratory for Advanced Materials
- Institute of Fine Chemicals
- School of Chemistry & Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
| | - Henry N. C. Wong
- Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis
- Shanghai Institute of Organic Chemistry
- The Chinese Academy of Sciences
- Shanghai 200032
- China
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20
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Abstract
The hallmark of nucleophilic phosphine catalysis is the initial nucleophilic addition of a phosphine to an electrophilic starting material, producing a reactive zwitterionic intermediate, generally under mild conditions. In this Review, we classify nucleophilic phosphine catalysis reactions in terms of their electrophilic components. In the majority of cases, these electrophiles possess carbon-carbon multiple bonds: alkenes (section 2), allenes (section 3), alkynes (section 4), and Morita-Baylis-Hillman (MBH) alcohol derivatives (MBHADs; section 5). Within each of these sections, the reactions are compiled based on the nature of the second starting material-nucleophiles, dinucleophiles, electrophiles, and electrophile-nucleophiles. Nucleophilic phosphine catalysis reactions that occur via the initial addition to starting materials that do not possess carbon-carbon multiple bonds are collated in section 6. Although not catalytic in the phosphine, the formation of ylides through the nucleophilic addition of phosphines to carbon-carbon multiple bond-containing compounds is intimately related to the catalysis and is discussed in section 7. Finally, section 8 compiles miscellaneous topics, including annulations of the Hüisgen zwitterion, phosphine-mediated reductions, iminophosphorane organocatalysis, and catalytic variants of classical phosphine oxide-generating reactions.
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Affiliation(s)
- Hongchao Guo
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Yi Chiao Fan
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, CA 90095-1569, USA
| | - Zhanhu Sun
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Yang Wu
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Ohyun Kwon
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, CA 90095-1569, USA
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21
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Formica M, Sorin G, Farley AJM, Díaz J, Paton RS, Dixon DJ. Bifunctional iminophosphorane catalysed enantioselective sulfa-Michael addition of alkyl thiols to alkenyl benzimidazoles. Chem Sci 2018; 9:6969-6974. [PMID: 30210771 PMCID: PMC6124915 DOI: 10.1039/c8sc01804a] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Accepted: 07/12/2018] [Indexed: 01/08/2023] Open
Abstract
The first enantioselective sulfa-Michael addition of alkyl thiols to alkenyl benzimidazoles, enabled by a bifunctional iminophosphorane (BIMP) organocatalyst, is described. The iminophosphorane moiety of the catalyst provides the required basicity to deprotonate the thiol nucleophile while the chiral scaffold and H-bond donor control facial selectivity. The reaction is broad in scope with respect to the thiol and benzimidazole reaction partners with the reaction proceeding in up to 98% yield and 96 : 4 er.
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Affiliation(s)
- Michele Formica
- Department of Chemistry , Chemistry Research Laboratory , University of Oxford , Mansfield Road , Oxford OX1 3TA , UK .
| | - Geoffroy Sorin
- Department of Chemistry , Chemistry Research Laboratory , University of Oxford , Mansfield Road , Oxford OX1 3TA , UK .
- Faculté des Sciences Pharmaceutiques et Biologiques , Unité CNRS UMR 8638 COMETE , Paris Descartes University , Sorbonne Paris Cité , 4 Avenue de l'Observatoire , 75270 Paris Cedex 06 , France
| | - Alistair J M Farley
- Department of Chemistry , Chemistry Research Laboratory , University of Oxford , Mansfield Road , Oxford OX1 3TA , UK .
| | - Jesús Díaz
- Departamento de Química Orgánica , Universidad de Extremadura , Avda. Universidad , s/n, 10003 Cáceres , Spain
| | - Robert S Paton
- Department of Chemistry , Colorado State University , Fort Collins , Colorado 80523 , USA
| | - Darren J Dixon
- Department of Chemistry , Chemistry Research Laboratory , University of Oxford , Mansfield Road , Oxford OX1 3TA , UK .
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22
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Bifunctional iminophosphorane superbases: Potent organocatalysts for enantio- and diastereoselective Michael addition reactions. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.06.021] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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23
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Chiral iminophosphoranes organocatalyzed asymmetric hydroxylation of 3-substituted oxindoles with oxaziridines. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.05.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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24
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Freckleton M, Baeza A, Benavent L, Chinchilla R. Asymmetric Organocatalytic Electrophilic Heterofunctionalization of Oxindoles. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800146] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Megan Freckleton
- Instituto de Síntesis Orgánica and Dpto. de Química Orgánica; Universidad de Alicante; Apdo. 99 03080 Alicante Spain
| | - Alejandro Baeza
- Instituto de Síntesis Orgánica and Dpto. de Química Orgánica; Universidad de Alicante; Apdo. 99 03080 Alicante Spain
| | - Llorenç Benavent
- Instituto de Síntesis Orgánica and Dpto. de Química Orgánica; Universidad de Alicante; Apdo. 99 03080 Alicante Spain
| | - Rafael Chinchilla
- Instituto de Síntesis Orgánica and Dpto. de Química Orgánica; Universidad de Alicante; Apdo. 99 03080 Alicante Spain
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25
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Liang W, Yin W, Wang T, Qiu FG, Zhao J. Organocatalytic stereoselective conjugate addition of 3-substituted oxindoles with in situ generated ortho-quinone methides. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.03.069] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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26
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Uraguchi D, Kawai Y, Sasaki H, Yamada K, Ooi T. Allenedicarboxylate as a Stereochemically Labile Electrophile for Chiral Organic Base-catalyzed Stereoselective Michael Addition. CHEM LETT 2018. [DOI: 10.1246/cl.180031] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Daisuke Uraguchi
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho D2-1, Chikusa, Nagoya, Aichi 464-8601, Japan
| | - Yasutaka Kawai
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho D2-1, Chikusa, Nagoya, Aichi 464-8601, Japan
| | - Hitoshi Sasaki
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho D2-1, Chikusa, Nagoya, Aichi 464-8601, Japan
| | - Kohei Yamada
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho D2-1, Chikusa, Nagoya, Aichi 464-8601, Japan
| | - Takashi Ooi
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho D2-1, Chikusa, Nagoya, Aichi 464-8601, Japan
- CREST, Japan Science and Technology Agency (JST), Nagoya University, Nagoya, Aichi 464-8601, Japan
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27
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Uraguchi D, Yamada K, Sato M, Ooi T. Catalyst-Directed Guidance of Sulfur-Substituted Enediolates to Stereoselective Carbon–Carbon Bond Formation with Aldehydes. J Am Chem Soc 2018; 140:5110-5117. [DOI: 10.1021/jacs.7b12949] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Daisuke Uraguchi
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Nagoya 464-8601, Japan
| | - Kohei Yamada
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Nagoya 464-8601, Japan
| | - Makoto Sato
- CREST, Japan Science and Technology Agency (JST), Nagoya University, Nagoya 464-8601, Japan
| | - Takashi Ooi
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Nagoya 464-8601, Japan
- CREST, Japan Science and Technology Agency (JST), Nagoya University, Nagoya 464-8601, Japan
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28
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Yin XP, Zhu L, Zhou J. Metal-Free Azidation of α-Hydroxy Esters and α-Hydroxy Ketones Using Azidotrimethylsilane. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201701345] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Xiao-Ping Yin
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; 3663 N. Zhongshan Road Shanghai 200062 People's Republic of China
| | - Lei Zhu
- College of Chemistry and Materials Science; Hubei Engineering University; Xiaogan Hubei 432000 People's Republic of China
| | - Jian Zhou
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; 3663 N. Zhongshan Road Shanghai 200062 People's Republic of China
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; Shanghai 200032 People's Republic of China
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29
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Wang H, Wang K, Man Y, Gao X, Yang L, Ren Y, Li N, Tang B, Zhao G. Asymmetric Intermolecular Rauhut−Currier Reaction for the Construction of 3,3-Disubstituted Oxindoles with Quaternary Stereogenic Centers. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700649] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Hongyu Wang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Molecular and Nano Science; Shandong Normal University; Jinan 250014 People's Republic of China
- Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 People's Republic of China
| | - Kaiye Wang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Molecular and Nano Science; Shandong Normal University; Jinan 250014 People's Republic of China
| | - Yunquan Man
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Molecular and Nano Science; Shandong Normal University; Jinan 250014 People's Republic of China
| | - Xiaonan Gao
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Molecular and Nano Science; Shandong Normal University; Jinan 250014 People's Republic of China
| | - Limin Yang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Molecular and Nano Science; Shandong Normal University; Jinan 250014 People's Republic of China
| | - Yanfei Ren
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Molecular and Nano Science; Shandong Normal University; Jinan 250014 People's Republic of China
| | - Na Li
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Molecular and Nano Science; Shandong Normal University; Jinan 250014 People's Republic of China
| | - Bo Tang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Molecular and Nano Science; Shandong Normal University; Jinan 250014 People's Republic of China
| | - Gang Zhao
- Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 People's Republic of China
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30
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Qiu J, Wu D, Karmaker PG, Qi G, Chen P, Yin H, Chen FX. Catalytic Asymmetric Electrophilic Cyanation of 3-Substituted Oxindoles. Org Lett 2017; 19:4018-4021. [DOI: 10.1021/acs.orglett.7b01756] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Jiashen Qiu
- School of Chemistry & Chemical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian district, Beijing 100081, China
| | - Di Wu
- School of Chemistry & Chemical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian district, Beijing 100081, China
| | - Pran Gopal Karmaker
- School of Chemistry & Chemical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian district, Beijing 100081, China
| | - Guirong Qi
- School of Chemistry & Chemical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian district, Beijing 100081, China
| | - Peng Chen
- School of Chemistry & Chemical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian district, Beijing 100081, China
| | - Hongquan Yin
- School of Chemistry & Chemical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian district, Beijing 100081, China
| | - Fu-Xue Chen
- School of Chemistry & Chemical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian district, Beijing 100081, China
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31
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Simón L, Paton RS. Phosphazene Catalyzed Addition to Electron-Deficient Alkynes: The Importance of Nonlinear Allenyl Intermediates upon Stereoselectivity. J Org Chem 2017; 82:3855-3863. [DOI: 10.1021/acs.joc.7b00540] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Luis Simón
- Facultad de Ciencias
Químicas, Universidad de Salamanca, Plaza de los Caídos 1-5, Salamanca E37004, Spain
| | - Robert S. Paton
- Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
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32
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Abstract
The construction of chiral disubstituted oxindoles is an intriguing challenge for organic chemists.
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Affiliation(s)
- Renato Dalpozzo
- Dipartimento di Chimica e Tecnologie Chimiche
- Università della Calabria
- Arcavacata di Rende (Cs) 87030
- Italy
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33
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Gómez-Martínez M, Alonso DA, Pastor IM, Guillena G, Baeza A. Organocatalyzed Assembly of Chlorinated Quaternary Stereogenic Centers. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201600404] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Melania Gómez-Martínez
- Organic Chemistry Department and Organic Synthesis Institute; University of Alicante; Apdo. 99 E-03080- Alicante Spain
| | - Diego A. Alonso
- Organic Chemistry Department and Organic Synthesis Institute; University of Alicante; Apdo. 99 E-03080- Alicante Spain
| | - Isidro M. Pastor
- Organic Chemistry Department and Organic Synthesis Institute; University of Alicante; Apdo. 99 E-03080- Alicante Spain
| | - Gabriela Guillena
- Organic Chemistry Department and Organic Synthesis Institute; University of Alicante; Apdo. 99 E-03080- Alicante Spain
| | - Alejandro Baeza
- Organic Chemistry Department and Organic Synthesis Institute; University of Alicante; Apdo. 99 E-03080- Alicante Spain
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34
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Yang J, Farley AJM, Dixon DJ. Enantioselective bifunctional iminophosphorane catalyzed sulfa-Michael addition of alkyl thiols to unactivated β-substituted-α,β-unsaturated esters. Chem Sci 2016; 8:606-610. [PMID: 28451207 PMCID: PMC5358540 DOI: 10.1039/c6sc02878k] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 09/02/2016] [Indexed: 11/29/2022] Open
Abstract
The highly enantioselective sulfa-Michael addition of alkyl thiols to unactivated β-substituted-α,β-unsaturated esters catalyzed by a bifunctional iminophosphorane (BIMP) organocatalyst is described.
The highly enantioselective sulfa-Michael addition of alkyl thiols to unactivated β-substituted-α,β-unsaturated esters catalyzed by a bifunctional iminophosphorane (BIMP) organocatalyst is described. The low acidity of the alkyl thiol pro-nucleophiles is overcome by the high Brønsted basicity of the catalyst and the chiral scaffold/thiourea hydrogen-bond donor moiety provides the required enantiofacial discrimination in the addition step. The reaction is broad in scope with respect to the alkyl thiol and β-substituent of the α,β-unsaturated ester, affords sulfa-Michael adducts in excellent yields (up to >99%) and enantioselectivity (up to 97 : 3 er) and can operate down to 1 mol% catalyst loading.
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Affiliation(s)
- Jinchao Yang
- Department of Chemistry , Chemistry Research Laboratory , University of Oxford , 12 Mansfield Road , Oxford , UK .
| | - Alistair J M Farley
- Department of Chemistry , Chemistry Research Laboratory , University of Oxford , 12 Mansfield Road , Oxford , UK .
| | - Darren J Dixon
- Department of Chemistry , Chemistry Research Laboratory , University of Oxford , 12 Mansfield Road , Oxford , UK .
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35
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Lord TM, Casino SL, Hartzell SE, Garcia KJ, Pike RD, Stockland RA. Convenient Access to Arylated Spirocyclic Bisphosphonates. ChemistrySelect 2016. [DOI: 10.1002/slct.201600479] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Taylor M. Lord
- Department of Chemistry; Bucknell University; Lewisburg PA 17837
| | | | | | - Kevin J. Garcia
- Department of Chemistry; Bucknell University; Lewisburg PA 17837
| | - Robert D. Pike
- Department of Chemistry; The College of William and Mary; Williamsburg, VA 23185
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36
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Lauridsen VH, Ibsen L, Blom J, Jørgensen KA. Asymmetric Brønsted Base Catalyzed and Directed [3+2] Cycloaddition of 2-Acyl Cycloheptatrienes with Azomethine Ylides. Chemistry 2016; 22:3259-3263. [DOI: 10.1002/chem.201600255] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Vibeke H. Lauridsen
- Chemistry Department; Aarhus University; Langelandsgade 140 8000 Aarhus C Denmark
| | - Lise Ibsen
- Chemistry Department; Aarhus University; Langelandsgade 140 8000 Aarhus C Denmark
| | - Jakob Blom
- Chemistry Department; Aarhus University; Langelandsgade 140 8000 Aarhus C Denmark
| | - Karl Anker Jørgensen
- Chemistry Department; Aarhus University; Langelandsgade 140 8000 Aarhus C Denmark
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37
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Organocatalytic Asymmetric α-Chlorination of 1,3-Dicarbonyl Compounds Catalyzed by 2-Aminobenzimidazole Derivatives. Symmetry (Basel) 2016. [DOI: 10.3390/sym8010003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
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38
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Bao X, Wei S, Zou L, He Y, Xue F, Qu J, Wang B. Asymmetric chlorination of 4-substituted pyrazolones catalyzed by natural cinchona alkaloid. Chem Commun (Camb) 2016; 52:11426-11429. [DOI: 10.1039/c6cc06236a] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A natural quinidine catalyzed asymmetric chlorination of 4-substituted pyrazolones was revealed in high yield and excellent enantioselectivity.
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Affiliation(s)
- Xiaoze Bao
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Shiqiang Wei
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Liwei Zou
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Yuli He
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Fuzhao Xue
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Jingping Qu
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Baomin Wang
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
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Gao X, Han J, Wang L. Tartrate-derived iminophosphorane catalyzed asymmetric hydroxymethylation of 3-substituted oxindoles with paraformaldehyde. Org Chem Front 2016. [DOI: 10.1039/c6qo00074f] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Chiral iminophosphoranes organocatalyzed the enantioselective synthesis of 3-hydroxymethyl-2-oxindoles in 81–98% yields and up to 94% ee under mild conditions. Of note is that readily available and easily usable paraformaldehyde was employed as a hydroxymethylation C1 unit in the reaction.
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Affiliation(s)
- Xing Gao
- Key Laboratory of Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
- Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis
| | - Jianwei Han
- Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis
- Shanghai Institute of Organic Chemistry
- The Chinese Academy of Sciences
- Shanghai
- P. R. China
| | - Limin Wang
- Key Laboratory of Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
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40
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Farley AJM, Sandford C, Dixon DJ. Bifunctional Iminophosphorane Catalyzed Enantioselective Sulfa-Michael Addition to Unactivated α-Substituted Acrylate Esters. J Am Chem Soc 2015; 137:15992-5. [DOI: 10.1021/jacs.5b10226] [Citation(s) in RCA: 95] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Alistair J. M. Farley
- The Department of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Christopher Sandford
- The Department of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Darren J. Dixon
- The Department of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
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