1
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Formen JSSK, Lynch CC, Nelson E, Yuan A, Steber SE, Wolf C. Regioconvergent Nucleophilic Substitutions with Morita-Baylis-Hillman Fluorides. J Org Chem 2024. [PMID: 39014960 DOI: 10.1021/acs.joc.4c00660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/18/2024]
Abstract
Lithium iodide enables regioconvergent C-F bond functionalization of isomeric Morita-Baylis-Hillman fluorides with carbon, sulfur, and nitrogen nucleophiles. The defluorinative carbon-carbon and carbon-heteroatom bond formations give multifunctional compounds in excellent yields and with good to high diastereoselectivities at room temperature. The possibility of catalytic enantioselective allylation is also discussed.
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Affiliation(s)
- Jeffrey S S K Formen
- Department of Chemistry, Georgetown University, 37th and O Streets, Washington, District of Columbia 20057, United States
| | - Ciarán C Lynch
- Department of Chemistry, Georgetown University, 37th and O Streets, Washington, District of Columbia 20057, United States
| | - Eryn Nelson
- Department of Chemistry, Georgetown University, 37th and O Streets, Washington, District of Columbia 20057, United States
| | - Andi Yuan
- Department of Chemistry, Georgetown University, 37th and O Streets, Washington, District of Columbia 20057, United States
| | - Sarah E Steber
- Department of Chemistry, Georgetown University, 37th and O Streets, Washington, District of Columbia 20057, United States
| | - Christian Wolf
- Department of Chemistry, Georgetown University, 37th and O Streets, Washington, District of Columbia 20057, United States
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2
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Jin YH, Wang XP, Ning LW, Wang RJ, Li Y, Zhang Y, Chen LY. Organocatalyzed Asymmetric Michael Addition of 3-Fluorooxindole to Vinylidene Bisphosphonates. J Org Chem 2024; 89:8435-8446. [PMID: 38843406 DOI: 10.1021/acs.joc.4c00289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/22/2024]
Abstract
Both the 3-fluorooxindole and germinal bisphosphonate structural motifs are prevalent in bioactive molecules because of their associated biological activities. We describe an approach to accessing 3,3-disubstituted 3-fluorooxindoles bearing a geminal bisphosphate fragment through a highly enantioselective Michael addition reaction between 3-fluorooxindoles and vinylidene bisphosphonates. These reactions are catalyzed by a commercially available cinchona alkaloid catalyst, have a broad substrate scope concerning 3-fluorooxindoles, and provide the corresponding addition products in a yield of up to 95% with an enantiomeric excess of up to 95%. A reasonable reaction pathway to explain the observed stereochemistry is also proposed.
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Affiliation(s)
- Yi-Hu Jin
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai 201620, China
| | - Xiao-Ping Wang
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai 201620, China
| | - Li-Wen Ning
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai 201620, China
| | - Ren-Jie Wang
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai 201620, China
| | - Ya Li
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai 201620, China
| | - Youcan Zhang
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai 201620, China
| | - Ling-Yan Chen
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai 201620, China
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3
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Li Z, Fan L, Liu G. Recent advances in stereoselective construction of fluorinated quaternary carbon centers from fluorinated compounds. Org Biomol Chem 2024; 22:4592-4612. [PMID: 38771632 DOI: 10.1039/d4ob00457d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
There are many fluorinated quaternary carbon structural units in pharmaceuticals and bioactive compounds. Organic chemists are interested in the stereoselective synthesis of fluorinated quaternary carbon structural units. Constructing a fluorinated quaternary carbon stereocenter can be achieved directly and efficiently by the asymmetric catalytic reaction of fluorinated compounds as substrates. This approach aims to construct fluorinated quaternary carbon stereocenters while diversifying the types of fluorinated compounds. This review introduces a series of reactions for synthesizing fluorinated quaternary carbon chiral centers through asymmetric organic catalysis and transition metal catalysis, including alkylation, arylation, Mannich, Michael addition, and allylation reactions. This work will contribute to the development of the synthesis of fluorinated quaternary carbon chiral center-containing compounds in the future.
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Affiliation(s)
- Zongwei Li
- Inner Mongolia Key Laboratory of Fine Organic Synthesis, College of Chemistry and Chemical Engineering, Inner Mongolia University, 24 Zhaojun Road, Hohhot 010030, China.
| | - Lin Fan
- Inner Mongolia Key Laboratory of Fine Organic Synthesis, College of Chemistry and Chemical Engineering, Inner Mongolia University, 24 Zhaojun Road, Hohhot 010030, China.
| | - Guodu Liu
- Inner Mongolia Key Laboratory of Fine Organic Synthesis, College of Chemistry and Chemical Engineering, Inner Mongolia University, 24 Zhaojun Road, Hohhot 010030, China.
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4
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Bouda M, Bertke JA, Wolf C. Organocatalytic Asymmetric Conjugate Addition of Fluorooxindoles to Quinone Methides. J Org Chem 2024; 89:6100-6105. [PMID: 38619814 PMCID: PMC11077483 DOI: 10.1021/acs.joc.4c00062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 03/24/2024] [Accepted: 04/03/2024] [Indexed: 04/16/2024]
Abstract
Fluorooxindoles undergo asymmetric Michael addition to para-quinone methides under phase-transfer conditions with 10 mol% of a readily available cinchona alkaloid ammonium catalyst. This reaction affords sterically encumbered, multifunctional fluorinated organic compounds displaying two adjacent chirality centers with high yields, ee's and dr's.
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Affiliation(s)
- Maria Bouda
- Chemistry Department, Georgetown University, Washington, D.C. 20057, United States
| | - Jeffery A. Bertke
- Chemistry Department, Georgetown University, Washington, D.C. 20057, United States
| | - Christian Wolf
- Chemistry Department, Georgetown University, Washington, D.C. 20057, United States
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5
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Richard F, Clark P, Hannam A, Keenan T, Jean A, Arseniyadis S. Pd-Catalysed asymmetric allylic alkylation of heterocycles: a user's guide. Chem Soc Rev 2024; 53:1936-1983. [PMID: 38206332 DOI: 10.1039/d3cs00856h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2024]
Abstract
This review provides an in-depth analysis of recent advances and strategies employed in the Pd-catalysed asymmetric allylic alkylation (Pd-AAA) of nucleophilic prochiral heterocycles. The review is divided into sections each focused on a specific family of heterocycle, where optimisation data and reaction scope have been carefully analysed in order to bring forward specific reactivity and selectivity trends. The review eventually opens on how computer-based technologies could be used to predict an ideally matched catalytic system for any given substrate. This user-guide targets chemists from all horizons interested in running a Pd-AAA reaction for the preparation of highly enantioenriched heterocyclic compounds.
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Affiliation(s)
- François Richard
- Queen Mary University of London, Department of Chemistry, Mile End Road, E1 4NS, London, UK.
| | - Paul Clark
- Queen Mary University of London, Department of Chemistry, Mile End Road, E1 4NS, London, UK.
| | - Al Hannam
- Queen Mary University of London, Department of Chemistry, Mile End Road, E1 4NS, London, UK.
| | - Thomas Keenan
- Queen Mary University of London, Department of Chemistry, Mile End Road, E1 4NS, London, UK.
| | - Alexandre Jean
- Industrial Research Centre, Oril Industrie, 13 rue Desgenétais, 76210, Bolbec, France
| | - Stellios Arseniyadis
- Queen Mary University of London, Department of Chemistry, Mile End Road, E1 4NS, London, UK.
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6
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Qin H, Wei GL, Zheng XW, Zhang YW, Huang P. Selectfluor Mediated Direct C-H Fluorination of 3-Heteroaryl-Oxindoles. J Org Chem 2024; 89:740-747. [PMID: 38101804 DOI: 10.1021/acs.joc.3c02063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2023]
Abstract
An efficient transition-metal-free fluorination synthesis of N-H-free 3-heteroaryl-oxindoles with Selectfluor was depicted. Under mild reaction conditions, a series of 3-heteroaryl-fluorooxindoles were produced in yield of 62-88% using Selectfluor as a fluorine source.
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Affiliation(s)
- Hui Qin
- Center for Clinical Pharmacy, Cancer Center, Department of Pharmacy Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang 310014, China
- Key Laboratory of Endocrine Gland Diseases of Zhejiang Province, Hangzhou, Zhejiang 310014, China
| | - Guo-Liang Wei
- Center for Clinical Pharmacy, Cancer Center, Department of Pharmacy Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang 310014, China
| | - Xiao-Wei Zheng
- Center for Clinical Pharmacy, Cancer Center, Department of Pharmacy Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang 310014, China
- Key Laboratory of Endocrine Gland Diseases of Zhejiang Province, Hangzhou, Zhejiang 310014, China
| | - Yi-Wen Zhang
- Center for Clinical Pharmacy, Cancer Center, Department of Pharmacy Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang 310014, China
- Key Laboratory of Endocrine Gland Diseases of Zhejiang Province, Hangzhou, Zhejiang 310014, China
| | - Ping Huang
- Center for Clinical Pharmacy, Cancer Center, Department of Pharmacy Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang 310014, China
- Key Laboratory of Endocrine Gland Diseases of Zhejiang Province, Hangzhou, Zhejiang 310014, China
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7
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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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8
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Iwasaki T, Kambe N. Cross- and Multi-Coupling Reactions Using Monofluoroalkanes. CHEM REC 2023; 23:e202300033. [PMID: 37070641 DOI: 10.1002/tcr.202300033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 04/03/2023] [Indexed: 04/19/2023]
Abstract
Carbon-fluorine bonds are stable and have demonstrated sluggishness against various chemical manipulations. However, selective transformations of C-F bonds can be achieved by developing appropriate conditions as useful synthetic methods in organic chemistry. This review focuses on C-C bond formation at monofluorinated sp3 -hybridized carbons via C-F bond cleavage, including cross-coupling and multi-component coupling reactions. The C-F bond cleavage mechanisms on the sp3 -hybridized carbon centers can be primarily categorized into three types: Lewis acids promoted F atom elimination to generate carbocation intermediates; nucleophilic substitution with metal or carbon nucleophiles supported by the activation of C-F bonds by coordination of Lewis acids; and the cleavage of C-F bonds via a single electron transfer. The characteristic features of alkyl fluorides, in comparison with other (pseudo)halides as promising electrophilic coupling counterparts, are also discussed.
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Affiliation(s)
- Takanori Iwasaki
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - Nobuaki Kambe
- Research Center for Environmental Preservation, Osaka University, 2-4 Yamadaoka, Suita, Osaka, 565-0871, Japan
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9
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Yuan A, Steber SE, Xhili D, Nelson E, Wolf C. Enantioseparation and racemization of 3-fluorooxindoles. Chirality 2023; 35:619-624. [PMID: 37129272 PMCID: PMC10516598 DOI: 10.1002/chir.23572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 04/03/2023] [Accepted: 04/17/2023] [Indexed: 05/03/2023]
Abstract
Fluorinated oxindoles are frequently used building blocks in asymmetric synthesis and represent an important scaffold found in a variety of biologically relevant compounds. While it is understood that incorporation of fluorine atoms into organic molecules can improve their pharmacological properties, the impact on the configurational stability of chiral organofluorines is still underexplored. In this study, semipreparative HPLC enantioseparations of five oxindoles were carried out, and the resulting enantiomerically enriched solutions were used to investigate base promoted racemization kinetics at room temperature. It was found that incorporation of fluorine at the chiral center increases the configurational stability, while substitutions on the aromatic ring and at the lactam moiety also have significant effects on the rate of racemization, which generally follows reversible first-order reaction kinetics.
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Affiliation(s)
- Andi Yuan
- Department of Chemistry, Georgetown University, Washington, DC, USA
| | - Sarah E Steber
- Department of Chemistry, Georgetown University, Washington, DC, USA
| | - Dea Xhili
- Department of Chemistry, Georgetown University, Washington, DC, USA
| | - Eryn Nelson
- Department of Chemistry, Georgetown University, Washington, DC, USA
| | - Christian Wolf
- Department of Chemistry, Georgetown University, Washington, DC, USA
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10
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Figula BC, Kane DL, Balaraman K, Wolf C. Organocuprate Cross-Coupling Reactions with Alkyl Fluorides. Org Lett 2022; 24:8719-8723. [PMID: 36394939 PMCID: PMC10502612 DOI: 10.1021/acs.orglett.2c03775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Cross-coupling of alkyl fluorides and organocuprates is accomplished via aluminum halide mediated C-F bond activation and subsequent Csp2-Csp3 and Csp3-Csp3 bond formation. Relatively mild conditions allow for smooth activation of notoriously challenging primary and secondary alkyl fluorides while competing alkyl chain rearrangement, HF elimination, and homocoupling reactions are effectively controlled. The utility and functional group tolerance are demonstrated with 23 examples and a variety of coupling products obtained in up to 88% yield.
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Affiliation(s)
- Bryan C Figula
- Chemistry Department, Georgetown University, Washington, DC 20057, United States
| | - D Lucas Kane
- Chemistry Department, Georgetown University, Washington, DC 20057, United States
| | - Kaluvu Balaraman
- Chemistry Department, Georgetown University, Washington, DC 20057, United States
| | - Christian Wolf
- Chemistry Department, Georgetown University, Washington, DC 20057, United States
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11
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Wang DC, Yang TT, Qu GR, Guo HM. Substrate-Dependent Regioselectivity: Pd/PTC Cooperatively Catalyzed Domino Heck/Allylation of Allenamides with α-Carbon of Carbonyl Compounds. J Org Chem 2022; 87:14284-14298. [PMID: 36240155 DOI: 10.1021/acs.joc.2c01768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A Pd/phase-transfer catalyst cooperatively catalyzed domino Heck/allylation reaction is first reported, which represents interesting substrate-dependent regioselectivity. Under the same conditions, Ts-protected N-(2-iodophenyl)allenamides produced only linear allylation products, while Cbz, Ac, or Boc-protected N-(2-iodophenyl)allenamides and N-(2-iodobenzoyl)allenamides with various compounds generated branch allylation products with an exocylic C═C bond and two vicinal stereocenters. Up-scale syntheses and diverse fused cyclization transformations of products were then carried out. The enantioselective version for the domino process was studied.
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Affiliation(s)
- Dong-Chao Wang
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Ting-Ting Yang
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Gui-Rong Qu
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Hai-Ming Guo
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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12
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Balaraman K, Kyriazakos S, Palmer R, Thanzeel FY, Wolf C. Selective Csp 3-F Bond Functionalization with Lithium Iodide. SYNTHESIS-STUTTGART 2022; 54:4320-4328. [PMID: 36330045 PMCID: PMC9624501 DOI: 10.1055/s-0041-1738383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
A highly efficient method for C-F bond functionalization of a broad variety of activated and unactivated aliphatic substrates with inexpensive lithium iodide is presented. Primary, secondary, tertiary, benzylic, propargylic and α-functionalized alkyl fluorides react in chlorinated or aromatic solvents at room temperature or upon heating to the corresponding iodides which are isolated in 91-99% yield. The reaction is selective for aliphatic monofluorides and can be coupled with in situ nucleophilic iodide replacements to install carbon-carbon, carbon-nitrogen and carbon-sulfur bonds with high yields. Alkyl difluorides, trifluorides, even in activated benzylic positions, are inert under the same conditions and aryl fluoride bonds are also tolerated.
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Affiliation(s)
- Kaluvu Balaraman
- Georgetown University, Chemistry Department, Washington, DC 20057, USA
| | | | - Rachel Palmer
- Georgetown University, Chemistry Department, Washington, DC 20057, USA
| | - F Yushra Thanzeel
- Georgetown University, Chemistry Department, Washington, DC 20057, USA
| | - Christian Wolf
- Georgetown University, Chemistry Department, Washington, DC 20057, USA
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13
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Sripada A, Wolf C. Catalytic Asymmetric Allylic Alkylation with Arylfluoroacetonitriles. J Org Chem 2022; 87:11880-11887. [PMID: 35975680 PMCID: PMC9444989 DOI: 10.1021/acs.joc.2c01414] [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: 11/29/2022]
Abstract
A palladium(phosphinoxazoline) catalyzed method for asymmetric allylic alkylation of α-aryl-α-fluoroacetonitriles is introduced. This reaction achieves C-C bond formation and incorporation of two adjacent chirality centers with moderate to good yields, high enantioselectivities, and up to 15:1 dr.
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Affiliation(s)
- Archita Sripada
- Department of Chemistry, Georgetown University, 37th and O Streets, Washington, DC 20057, United States
| | - Christian Wolf
- Department of Chemistry, Georgetown University, 37th and O Streets, Washington, DC 20057, United States
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14
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Zhao C, Liu Y, Zhang X, He G, Liu H, Ji D, Hu Y, Chen Q. Bioinspired and Ligand‐Regulated Unnatural Prenylation and Geranylation of Oxindoles with Isoprene under Pd Catalysis. Angew Chem Int Ed Engl 2022; 61:e202207202. [DOI: 10.1002/anie.202207202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Chao‐Yang Zhao
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
| | - Ying‐Ying Liu
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
| | - Xiang‐Xin Zhang
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
| | - Gu‐Cheng He
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
| | - Heng Liu
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
| | - Ding‐Wei Ji
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Yan‐Cheng Hu
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Qing‐An Chen
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
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15
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Zhao C, Liu Y, Zhang X, He G, Liu H, Ji D, Hu Y, Chen Q. Bioinspired and Ligand‐Regulated Unnatural Prenylation and Geranylation of Oxindoles with Isoprene under Pd Catalysis. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202207202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Chao‐Yang Zhao
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
| | - Ying‐Ying Liu
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
| | - Xiang‐Xin Zhang
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
| | - Gu‐Cheng He
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
| | - Heng Liu
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
| | - Ding‐Wei Ji
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Yan‐Cheng Hu
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Qing‐An Chen
- Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
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16
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Balaraman K, Wolf C. Chemodivergent Csp 3─F bond functionalization and cross-electrophile alkyl-alkyl coupling with alkyl fluorides. SCIENCE ADVANCES 2022; 8:eabn7819. [PMID: 35622926 PMCID: PMC9140971 DOI: 10.1126/sciadv.abn7819] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
The widespread use of fluorinated organic compounds in the health, agrochemical, and materials sciences is sustained by a steadily growing pool of commercially available fine chemicals. The synthetic utility of the increasingly ubiquitous Csp3─F bond, however, remains to be fully exploited, which is often a difficult task because of its paramount stability and chemical inertness. Here, we demonstrate chemodivergent activation of monofluoroalkyl compounds toward either nucleophilic or electrophilic intermediates. This is accomplished under conditions that are compatible with several reaction types and many functional groups, which drastically widens the current scope of organofluorine chemistry and sets the stage for carbon-carbon and carbon-heteroatom bond formations, stereoselective construction of bisoxindole alkaloid scaffolds via in situ Umpolung, and cross-electrophilic coupling methodology. The selective generation of either nucleophilic or electrophilic species and the possibility of doing so simultaneously or, alternatively, switching molecular polarity enable previously unidentified synthetic opportunities that recognize alkyl fluorides as chemodivergent building blocks.
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17
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Lin H, Jiao W, Chen Z, Han J, Fang D, Wang M, Liao J. Enantioselective Cu-Catalyzed Nucleophilic Addition of Fluorinated Reagents: C–C Bond Formation for the Synthesis of Chiral Vicinal Difluorides. Org Lett 2022; 24:2197-2202. [DOI: 10.1021/acs.orglett.2c00518] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Huaxin Lin
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wei Jiao
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhiwei Chen
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jian Han
- College of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Dongmei Fang
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
| | - Min Wang
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jian Liao
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- College of Chemical Engineering, Sichuan University, Chengdu 610065, China
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18
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Butcher TW, Amberg WM, Hartwig JF. Transition‐Metal‐Catalyzed Monofluoroalkylation: Strategies for the Synthesis of Alkyl Fluorides by C−C Bond Formation. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202112251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Trevor W. Butcher
- Department of Chemistry University of California, Berkeley Berkeley CA 94720 USA
| | - Willi M. Amberg
- Department of Chemistry and Applied Biosciences Laboratory of Organic Chemistry ETH Zϋrich 8093 Zϋrich Switzerland
| | - John F. Hartwig
- Department of Chemistry University of California, Berkeley Berkeley CA 94720 USA
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19
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Zhang K, Sheng X, Deiana L, Svensson Grape E, Inge K, Himo F, Cordova A. Solvent Dependency in Stereoselective δ‐Lactam Formation of Chiral α‐Fluoromalonate Derivatives: Stereodivergent Synthesis of Heterocycles with Fluorine Containing Quaternary Stereocenters Adjacent to Tertiary Stereocenters. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202101404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Kaiheng Zhang
- Mittuniversitetet Fakulteten for naturvetenskap teknik och medier SWEDEN
| | - Xiang Sheng
- Tianjin Institute of Industrial Biotechnology Chinese Academy of Sciences CHINA
| | - Luca Deiana
- Stockholms Universitet Naturvetenskapliga fakulteten SWEDEN
| | | | - Ken Inge
- Stockholm University Faculty of Natural Sciences SWEDEN
| | | | - Armando Cordova
- Mittuniversitetet Fakulteten for naturvetenskap teknik och medier SWEDEN
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20
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Jiang L, Sarró P, Teo WJ, Llop J, Suero MG. Catalytic alkene skeletal modification for the construction of fluorinated tertiary stereocenters. Chem Sci 2022; 13:4327-4333. [PMID: 35509472 PMCID: PMC9006967 DOI: 10.1039/d2sc00968d] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 03/11/2022] [Indexed: 11/25/2022] Open
Abstract
Herein we describe the first construction of fluorinated tertiary stereocenters based on an alkene C(sp2)–C(sp2) bond cleavage. The new process, that takes advantage of a Rh-catalyzed carbyne transfer, relies on a branched-selective fluorination of tertiary allyl cations and is distinguished by a wide scope including natural products and drug molecule derivatives as well as adaptability to radiofluorination. We report a previously unknown disconnection approach to valuable fluorinated tertiary stereocenters based on the skeletal modification of 1,1-disubstituted alkenes by a Rh-catalyzed carbyne transfer.![]()
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Affiliation(s)
- Liyin Jiang
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology. Av. Països Catalans, 16 43007 Tarragona Spain
| | - Pau Sarró
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology. Av. Països Catalans, 16 43007 Tarragona Spain
- Departament de Química Analítica I Química Orgànica, Universitat Rovira I Virgili, C. Marcel·lí Domingo, 1 43007 Tarragona Spain
| | - Wei Jie Teo
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology. Av. Països Catalans, 16 43007 Tarragona Spain
| | - Jordi Llop
- CIC BiomaGUNE, Basque Research and Technology Alliance 20014 San Sebastián Guipuzcoa Spain
| | - Marcos G Suero
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology. Av. Països Catalans, 16 43007 Tarragona Spain
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21
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Simur TT, Dagnaw FW, Yu Y, Zhang F, Wang Y. 4‐Dimethylaminopyridine‐Boryl
Radical Promoted Monodefluorinative Alkylation of 3,
3‐Difluorooxindoles. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202100784] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Tesfaye Tebeka Simur
- Hefei National Laboratory for Physical at the Microscale, Department of Chemistry, University of Science and Technology of China 96 Jinzhai Road Hefei Anhui 230026 China
| | - Fentahun Wondu Dagnaw
- Hefei National Laboratory for Physical at the Microscale, Department of Chemistry, University of Science and Technology of China 96 Jinzhai Road Hefei Anhui 230026 China
| | - You‐Jie Yu
- Hefei National Laboratory for Physical at the Microscale, Department of Chemistry, University of Science and Technology of China 96 Jinzhai Road Hefei Anhui 230026 China
| | - Feng‐Lian Zhang
- Hefei National Laboratory for Physical at the Microscale, Department of Chemistry, University of Science and Technology of China 96 Jinzhai Road Hefei Anhui 230026 China
| | - Yi‐Feng Wang
- Hefei National Laboratory for Physical at the Microscale, Department of Chemistry, University of Science and Technology of China 96 Jinzhai Road Hefei Anhui 230026 China
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22
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Liu YL, Wang XP, Wei J, Li Y. Synthesis of oxindoles bearing a stereogenic 3-fluorinated carbon center from 3-fluorooxindoles. Org Biomol Chem 2021; 20:538-552. [PMID: 34935824 DOI: 10.1039/d1ob01964c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
3,3-Disubstituted oxindoles bearing a stereogenic 3-fluorinated carbon center are privileged structural motifs present in many bioactive molecules. The straightforward functionalization of 3-fluorooxindoles constitutes a powerful method for the synthesis of 3-fully substituted 3-fluorooxindoles, taking advantage of the ease of preparation of 3-fluorooxindoles with different substitution patterns and the atom efficiency of chemical reactions. In the past decade, many papers have appeared on the synthesis of 3-fully substituted 3-fluorooxindoles from 3-fluorooxindoles. Importantly, many asymmetric catalytic methods have been developed for the enantioselective synthesis of these valuable compounds. This review summarizes the achievements in this area, and overviews synthetic opportunities that still exist.
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Affiliation(s)
- Yong-Liang Liu
- School of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai, 201620, China.
| | - Xiao-Ping Wang
- School of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai, 201620, China.
| | - Jie Wei
- School of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai, 201620, China.
| | - Ya Li
- School of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai, 201620, China. .,Shanghai Frontiers Science Research Center for Druggability of Cardiovascular noncoding RNA, Institute for Frontier Medical Technology, Shanghai University of Engineering Science, Shanghai, 201620, China
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23
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Huang ZY, Li XY, Wang ZH, Hu LY, Tu XC, Hu YJ. Synthesis of novel 3-fluorooxindoles and their affinity probing with serum albumin: Using multi-spectral, electrochemical, and molecular docking. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117615] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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24
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Balaraman K, Wolf C. Palladium and Nickel Catalyzed Suzuki Cross-Coupling with Alkyl Fluorides. Org Lett 2021; 23:8994-8999. [PMID: 34723542 DOI: 10.1021/acs.orglett.1c03515] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Suzuki cross-coupling of benzylic and unactivated aliphatic fluorides with aryl- and alkenylboronic acids has been achieved via mechanistically distinct Pd and Ni catalyzed pathways that outperform competing protodeboronation, β-hydride elimination, and homocoupling processes. The utility is demonstrated with more than 20 examples including heterocyclic structures, 1,1-disubstituted and trans-1,2-disubstituted alkenes, and by the incorporation of acetonitrile into functionalized (hetero)arenes.
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Affiliation(s)
- Kaluvu Balaraman
- Georgetown University, Chemistry Department, Washington, District of Columbia 20057, United States
| | - Christian Wolf
- Georgetown University, Chemistry Department, Washington, District of Columbia 20057, United States
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25
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Evolution in heterodonor P-N, P-S and P-O chiral ligands for preparing efficient catalysts for asymmetric catalysis. From design to applications. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.214120] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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26
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Butcher TW, Amberg WM, Hartwig JF. Transition-Metal-Catalyzed Monofluoroalkylation: Strategies for the Synthesis of Alkyl Fluorides by C-C Bond Formation. Angew Chem Int Ed Engl 2021; 61:e202112251. [PMID: 34658121 DOI: 10.1002/anie.202112251] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Indexed: 11/09/2022]
Abstract
Alkyl fluorides modulate the conformation, lipophilicity, metabolic stability, and p K a of compounds containing aliphatic motifs and, therefore, have been valuable for medicinal chemistry. Despite significant research in organofluorine chemistry, the synthesis of alkyl fluorides, especially chiral alkyl fluorides, remains a challenge. Most commonly, alkyl fluorides are prepared by the formation of C-F bonds (fluorination), and numerous strategies for nucleophilic, electrophilic, and radical fluorination have been reported in recent years. Although strategies to access alkyl fluorides by C-C bond formation (monofluoroalkylation) are inherently convergent and complexity-generating, they have studied less than methods based on fluorination. This Review provides an overview of recent developments in the synthesis of chiral (enantioenriched or racemic) secondary and tertiary alkyl fluorides by monofluoroalkylation catalyzed by transition-metal complexes. We expect this contribution will illuminate the potential of monofluoroalkylations to simplify the synthesis of complex alkyl fluorides and suggest further research directions in this growing field.
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Affiliation(s)
| | - Willi M Amberg
- University of California Berkeley, Chemistry, UNITED STATES
| | - John F Hartwig
- University of California, Department of Chemistry, 718 LATIMER HALL #1460, 94720-1460, Berkeley, UNITED STATES
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27
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Liu L, Li Y, Huang T, Kong D, Wu M. A novel methodology for the efficient synthesis of 3-monohalooxindoles by acidolysis of 3-phosphate-substituted oxindoles with haloid acids. Beilstein J Org Chem 2021; 17:2321-2328. [PMID: 34621395 PMCID: PMC8450974 DOI: 10.3762/bjoc.17.150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Accepted: 08/27/2021] [Indexed: 11/23/2022] Open
Abstract
A novel method for the synthesis of 3-monohalooxindoles by acidolysis of isatin-derived 3-phosphate-substituted oxindoles with haloid acids was developed. This synthetic strategy involved the preparation of 3-phosphate-substituted oxindole intermediates and SN1 reactions with haloid acids. This new procedure features mild reaction conditions, simple operation, good yield, readily available and inexpensive starting materials, and gram-scalability.
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Affiliation(s)
- Li Liu
- Key Laboratory of Tropical Medicinal Plant Chemistry of the Ministry of Education, College of Chemistry & Chemical Engineering, Hainan Normal University, Haikou 571158, Hainan Province, P. R. China
| | - Yue Li
- Key Laboratory of Tropical Medicinal Plant Chemistry of the Ministry of Education, College of Chemistry & Chemical Engineering, Hainan Normal University, Haikou 571158, Hainan Province, P. R. China
| | - Tiao Huang
- Key Laboratory of Tropical Medicinal Plant Chemistry of the Ministry of Education, College of Chemistry & Chemical Engineering, Hainan Normal University, Haikou 571158, Hainan Province, P. R. China
| | - Dulin Kong
- School of Pharmaceutical Sciences, Hainan Medical University, Haikou 571199, Hainan Province, P. R. China
| | - Mingshu Wu
- Key Laboratory of Tropical Medicinal Plant Chemistry of the Ministry of Education, College of Chemistry & Chemical Engineering, Hainan Normal University, Haikou 571158, Hainan Province, P. R. China
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28
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Liu LX, Huang WJ, Xie QX, Wu B, Yu CB, Zhou YG. Dynamic Kinetic Resolution of Flavonoids via Asymmetric Allylic Alkylation: Construction of Two Contiguous Stereogenic Centers on Nucleophiles. ACS Catal 2021. [DOI: 10.1021/acscatal.1c03732] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Li-Xia Liu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Wen-Jun Huang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
| | - Qing-Xian Xie
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
| | - Bo Wu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
| | - Chang-Bin Yu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
| | - Yong-Gui Zhou
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
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29
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Steber SE, Pham ANDL, Nelson E, Wolf C. Enantioseparation and racemization of α-aryl-α-fluoroacetonitriles. Chirality 2021; 33:891-898. [PMID: 34598313 DOI: 10.1002/chir.23367] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 09/02/2021] [Accepted: 09/12/2021] [Indexed: 12/15/2022]
Abstract
The 2-Aryl-2-fluoroacetonitriles have garnered increasing interest as versatile building blocks in asymmetric synthesis. However, the configurational stability of these organofluorines is poorly understood and analytical methods that can be used to differentiate between their enantiomers remain underdeveloped. In this study, baseline high performance liquid chromatography (HPLC) enantioseparation of ten 2-aryl-2-fluoroacetonitriles was achieved by screening frequently used chiral stationary phases. While Chiralcel OD, Chiralpak AD, and Chiralpak AS proved to be most broadly useful, preparative separation of the enantiomers of 2-(2-naphthyl)-2-fluoroacetonitrile was possible on Chiralcel OJ. This enabled racemization studies at various temperatures and in the presence of organic bases which showed that this compound is configurationally stable under neutral conditions upon heating to 130°C for 6 h but undergoes complete racemization within 10 h in the presence of stoichiometric amounts of a guanidine base at room temperature. The racemization is likely to proceed via formation of an achiral keteniminate intermediate and obeys reversible first-order reaction kinetics with a half-life time of 87.7 min in ethanolic hexanes at 23.2°C. Racemization is significantly slower and occurs with a half-life time of 23.1 h at 22.4°C when the guanidine is replaced with a weaker amidine base.
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Affiliation(s)
- Sarah E Steber
- Department of Chemistry, Georgetown University, Washington, District of Columbia, USA
| | - Angelette N D L Pham
- Department of Chemistry, Georgetown University, Washington, District of Columbia, USA
| | - Eryn Nelson
- Department of Chemistry, Georgetown University, Washington, District of Columbia, USA
| | - Christian Wolf
- Department of Chemistry, Georgetown University, Washington, District of Columbia, USA
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30
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Connon R, Roche B, Rokade BV, Guiry PJ. Further Developments and Applications of Oxazoline-Containing Ligands in Asymmetric Catalysis. Chem Rev 2021; 121:6373-6521. [PMID: 34019404 PMCID: PMC8277118 DOI: 10.1021/acs.chemrev.0c00844] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Indexed: 12/27/2022]
Abstract
The chiral oxazoline motif is present in many ligands that have been extensively applied in a series of important metal-catalyzed enantioselective reactions. This Review aims to provide a comprehensive overview of the most significant applications of oxazoline-containing ligands reported in the literature starting from 2009 until the end of 2018. The ligands are classified not by the reaction to which their metal complexes have been applied but by the nature of the denticity, chirality, and donor atoms involved. As a result, the continued development of ligand architectural design from mono(oxazolines), to bis(oxazolines), to tris(oxazolines) and tetra(oxazolines) and variations thereof can be more easily monitored by the reader. In addition, the key transition states of selected asymmetric transformations will be given to illustrate the features that give rise to high levels of asymmetric induction. As a further aid to the reader, we summarize the majority of schemes with representative examples that highlight the variation in % yields and % ees for carefully selected substrates. This Review should be of particular interest to the experts in the field but also serve as a useful starting point to new researchers in this area. It is hoped that this Review will stimulate both the development/design of new ligands and their applications in novel metal-catalyzed asymmetric transformations.
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Affiliation(s)
- Robert Connon
- Synthesis
and Solid State Pharmaceutical Centre, Centre for Synthesis and Chemical
Biology, School of Chemistry, University
College Dublin, Dublin
4, Ireland
| | - Brendan Roche
- Synthesis
and Solid State Pharmaceutical Centre, Centre for Synthesis and Chemical
Biology, School of Chemistry, University
College Dublin, Dublin
4, Ireland
| | - Balaji V. Rokade
- BiOrbic
Research Centre, Centre for Synthesis and Chemical Biology, School
of Chemistry, University College Dublin, Dublin 4, Ireland
| | - Patrick J. Guiry
- Synthesis
and Solid State Pharmaceutical Centre, Centre for Synthesis and Chemical
Biology, School of Chemistry, University
College Dublin, Dublin
4, Ireland
- BiOrbic
Research Centre, Centre for Synthesis and Chemical Biology, School
of Chemistry, University College Dublin, Dublin 4, Ireland
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31
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Pàmies O, Margalef J, Cañellas S, James J, Judge E, Guiry PJ, Moberg C, Bäckvall JE, Pfaltz A, Pericàs MA, Diéguez M. Recent Advances in Enantioselective Pd-Catalyzed Allylic Substitution: From Design to Applications. Chem Rev 2021; 121:4373-4505. [PMID: 33739109 PMCID: PMC8576828 DOI: 10.1021/acs.chemrev.0c00736] [Citation(s) in RCA: 201] [Impact Index Per Article: 67.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Indexed: 12/30/2022]
Abstract
This Review compiles the evolution, mechanistic understanding, and more recent advances in enantioselective Pd-catalyzed allylic substitution and decarboxylative and oxidative allylic substitutions. For each reaction, the catalytic data, as well as examples of their application to the synthesis of more complex molecules, are collected. Sections in which we discuss key mechanistic aspects for high selectivity and a comparison with other metals (with advantages and disadvantages) are also included. For Pd-catalyzed asymmetric allylic substitution, the catalytic data are grouped according to the type of nucleophile employed. Because of the prominent position of the use of stabilized carbon nucleophiles and heteronucleophiles, many chiral ligands have been developed. To better compare the results, they are presented grouped by ligand types. Pd-catalyzed asymmetric decarboxylative reactions are mainly promoted by PHOX or Trost ligands, which justifies organizing this section in chronological order. For asymmetric oxidative allylic substitution the results are grouped according to the type of nucleophile used.
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Affiliation(s)
- Oscar Pàmies
- Universitat
Rovira i Virgili, Departament de
Química Física i Inorgànica, C/Marcel·lí Domingo, 1, 43007 Tarragona, Spain
| | - Jèssica Margalef
- Universitat
Rovira i Virgili, Departament de
Química Física i Inorgànica, C/Marcel·lí Domingo, 1, 43007 Tarragona, Spain
| | - Santiago Cañellas
- Discovery
Sciences, Janssen Research and Development, Janssen-Cilag, S.A. Jarama 75A, 45007, Toledo, Spain
| | - Jinju James
- Centre
for Synthesis and Chemical Biology, School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland
| | - Eric Judge
- Centre
for Synthesis and Chemical Biology, School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland
| | - Patrick J. Guiry
- Centre
for Synthesis and Chemical Biology, School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland
| | - Christina Moberg
- KTH
Royal Institute of Technology, Department of Chemistry, Organic Chemistry, SE 100 44 Stockholm, Sweden
| | - Jan-E. Bäckvall
- Department
of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE 106 91 Stockholm, Sweden
| | - Andreas Pfaltz
- Department
of Chemistry, University of Basel. St. Johanns-Ring 19, 4056 Basel, Switzerland
| | - Miquel A. Pericàs
- Institute
of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
- Departament
de Química Inorgànica i Orgànica, Universitat de Barcelona. 08028 Barcelona, Spain
| | - Montserrat Diéguez
- Universitat
Rovira i Virgili, Departament de
Química Física i Inorgànica, C/Marcel·lí Domingo, 1, 43007 Tarragona, Spain
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32
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Song S, Li Y, Chen D, Wang X, Liu Y, Chen L. Synthesis of α‐Amidoacrylates Containing a 3‐Ylideneoxindole Motif. ChemistrySelect 2021. [DOI: 10.1002/slct.202100578] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Shuai Song
- School of Chemistry and Chemical Engineering Shanghai University of Engineering Science 1333 Longteng Road Shanghai 201620 China
| | - Ya Li
- School of Chemistry and Chemical Engineering Shanghai University of Engineering Science 1333 Longteng Road Shanghai 201620 China
| | - De‐Yin Chen
- School of Chemistry and Chemical Engineering Shanghai University of Engineering Science 1333 Longteng Road Shanghai 201620 China
| | - Xiao‐Ping Wang
- School of Chemistry and Chemical Engineering Shanghai University of Engineering Science 1333 Longteng Road Shanghai 201620 China
| | - Yong‐Liang Liu
- School of Chemistry and Chemical Engineering Shanghai University of Engineering Science 1333 Longteng Road Shanghai 201620 China
| | - Ling‐Yan Chen
- School of Chemistry and Chemical Engineering Shanghai University of Engineering Science 1333 Longteng Road Shanghai 201620 China
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33
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Fischer O, Heinrich MR. 2-Fluoro-5-nitrophenyldiazonium: A Novel Sanger-Type Reagent for the Versatile Functionalization of Alcohols. Chemistry 2021; 27:5417-5421. [PMID: 33481282 PMCID: PMC8048593 DOI: 10.1002/chem.202100187] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Indexed: 12/15/2022]
Abstract
As a novel Sanger-type reagent, 2-fluoro-5-nitrophenyldiazonium tetrafluoroborate enabled the versatile functionalization of primary and secondary aliphatic alcohols. Based on a mild nucleophilic aromatic substitution of the fluorine atom under unprecedented, base-free conditions, the diazonium unit on the aromatic core of the resulting aryl-alkyl ether could be employed for such diverse transformations as radical C-H activation and cyclization, as well as palladium catalyzed cross-coupling reactions.
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Affiliation(s)
- Oliver Fischer
- Department of Chemistry and Pharmacy, Pharmaceutical ChemistryFriedrich-Alexander-Universität Erlangen-NürnbergNikolaus-Fiebiger-Str. 1091058ErlangenGermany
| | - Markus R. Heinrich
- Department of Chemistry and Pharmacy, Pharmaceutical ChemistryFriedrich-Alexander-Universität Erlangen-NürnbergNikolaus-Fiebiger-Str. 1091058ErlangenGermany
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34
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Zhao L, Li G, He R, Liu P, Wang F, Huo X, Zhao M, Zhang W. Stereodivergent Pd/Cu catalysis: asymmetric alkylation of racemic symmetrical 1,3-diphenyl allyl acetates. Org Biomol Chem 2021; 19:1955-1959. [DOI: 10.1039/d0ob02499f] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A stereodivergent Pd/Cu catalyst system was developed, which was successfully applied to the asymmetric allylic alkylation of symmetrical 1,3-disubstituted allyl acetates with prochiral imino esters in a fully stereodivergent manner.
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Affiliation(s)
- Ling Zhao
- East China University of Science and Technology
- Shanghai 200237
- China
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs
- Frontiers Science Center for Transformative Molecules
| | - Guanlin Li
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs
- Frontiers Science Center for Transformative Molecules
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
| | - Rui He
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs
- Frontiers Science Center for Transformative Molecules
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
| | - Penglin Liu
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs
- Frontiers Science Center for Transformative Molecules
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
| | - Feijun Wang
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Xiaohong Huo
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs
- Frontiers Science Center for Transformative Molecules
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
| | - Min Zhao
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Wanbin Zhang
- East China University of Science and Technology
- Shanghai 200237
- China
- College of Chemistry and Molecular Engineering
- Zhengzhou University
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35
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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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36
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Qiu ZB, Chen LY, Ji J, Ren X, Li Y. Highly diastereoselective aldol reactions of 3-Fluorooxindoles promoted by MgBr2•OEt2/iPr2NEt. J Fluor Chem 2020. [DOI: 10.1016/j.jfluchem.2020.109594] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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37
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Wang W, Xiong Q, Gong L, Wang Y, Liu J, Lan Y, Zhang X. Regio- and Enantioselective Palladium-Catalyzed Asymmetric Allylation of N-Fluorenyl Trifluoromethyl Imine. Org Lett 2020; 22:5479-5485. [PMID: 32602723 DOI: 10.1021/acs.orglett.0c01836] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A palladium-catalyzed asymmetric allylation of N-fluorenyl trifluoromethyl imine with allylic acetates is disclosed. This method provides scalable and efficient access to polysubstituted chiral α-trifluoromethyl amines bearing two adjacent stereocenters and one allyl group in high yields with excellent regio-, diastereo-, and enantioselectivity. Importantly, this method also provides a powerful strategy for the synthesis of both regioisomeric products and the regioselectivity is controlled by the chiral catalysts and optically active substrates.
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Affiliation(s)
- Wei Wang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu 610041, P.R. China.,Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province/College of Chemistry & Chemical Engineering, China West Normal University, Nanchong 637009, P.R. China
| | - Qin Xiong
- College of Chemistry, and Institute of Green Catalysis, Zhengzhou University, Zhengzhou 450001, P.R. China.,School of Chemistry and Chemical Engineering, and Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Chongqing 400030, P.R. China
| | - Liang Gong
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu 610041, P.R. China
| | - Yingwei Wang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu 610041, P.R. China
| | - Jie Liu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu 610041, P.R. China
| | - Yu Lan
- College of Chemistry, and Institute of Green Catalysis, Zhengzhou University, Zhengzhou 450001, P.R. China.,School of Chemistry and Chemical Engineering, and Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Chongqing 400030, P.R. China
| | - Xia Zhang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu 610041, P.R. China
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38
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Lynch CC, Balaraman K, Wolf C. Catalytic Asymmetric Allylic Amination with Isatins, Sulfonamides, Imides, Amines, and N-Heterocycles. Org Lett 2020; 22:3180-3184. [PMID: 32255635 PMCID: PMC7369029 DOI: 10.1021/acs.orglett.0c00936] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A generally useful palladium-catalyzed method for the asymmetric allylic amination with a large variety of isatins, sulfonamides, imides, amines, and N-heterocycles is introduced. A single protocol with a readily available catalyst accomplishes this reaction at room temperature with high yields and enantioselectivities often exceeding 90%, which is demonstrated with 31 examples.
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Affiliation(s)
- Ciarán C Lynch
- Department of Chemistry, Georgetown University, 37th and O Streets, Washington, DC 20057, United States
| | - Kaluvu Balaraman
- Department of Chemistry, Georgetown University, 37th and O Streets, Washington, DC 20057, United States
| | - Christian Wolf
- Department of Chemistry, Georgetown University, 37th and O Streets, Washington, DC 20057, United States
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39
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Liu X, Jin S, Zhang W, Liu Q, Zheng C, You S. Sequence‐Dependent Stereodivergent Allylic Alkylation/Fluorination of Acyclic Ketones. Angew Chem Int Ed Engl 2020; 59:2039-2043. [DOI: 10.1002/anie.201912882] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Indexed: 12/21/2022]
Affiliation(s)
- Xi‐Jia Liu
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Shicheng Jin
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Wen‐Yun Zhang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Qiang‐Qiang Liu
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Chao Zheng
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Shu‐Li You
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
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40
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Liu X, Jin S, Zhang W, Liu Q, Zheng C, You S. Sequence‐Dependent Stereodivergent Allylic Alkylation/Fluorination of Acyclic Ketones. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201912882] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Xi‐Jia Liu
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Shicheng Jin
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Wen‐Yun Zhang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Qiang‐Qiang Liu
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Chao Zheng
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Shu‐Li You
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
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41
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Bai X, Wu C, Ge S, Lu Y. Pd/Cu-Catalyzed Enantioselective Sequential Heck/Sonogashira Coupling: Asymmetric Synthesis of Oxindoles Containing Trifluoromethylated Quaternary Stereogenic Centers. Angew Chem Int Ed Engl 2019; 59:2764-2768. [PMID: 31664752 DOI: 10.1002/anie.201913148] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Indexed: 12/26/2022]
Abstract
An asymmetric palladium and copper co-catalyzed Heck/Sonogashira reaction between o-iodoacrylanilides and terminal alkynes to synthesize chiral oxindoles was developed. In particular, a wide range of CF3 -substituted o-iodoacrylanilides reacted with terminal alkynes, affording the corresponding chiral oxindoles containing trifluoromethylated quaternary stereogenic centers in high yields with excellent enantioselectivities (94-98 % ee). This asymmetric Heck/Sonogashira reaction provides a general approach to access oxindole derivatives containing quaternary stereogenic centers including CF3 -substituted ones.
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Affiliation(s)
- Xingfeng Bai
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore, Singapore
| | - Caizhi Wu
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore, Singapore
| | - Shaozhong Ge
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore, Singapore
| | - Yixin Lu
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore, Singapore
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42
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Bai X, Wu C, Ge S, Lu Y. Pd/Cu‐Catalyzed Enantioselective Sequential Heck/Sonogashira Coupling: Asymmetric Synthesis of Oxindoles Containing Trifluoromethylated Quaternary Stereogenic Centers. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201913148] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Xingfeng Bai
- Department of ChemistryNational University of Singapore 3 Science Drive 3 117543 Singapore Singapore
| | - Caizhi Wu
- Department of ChemistryNational University of Singapore 3 Science Drive 3 117543 Singapore Singapore
| | - Shaozhong Ge
- Department of ChemistryNational University of Singapore 3 Science Drive 3 117543 Singapore Singapore
| | - Yixin Lu
- Department of ChemistryNational University of Singapore 3 Science Drive 3 117543 Singapore Singapore
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43
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Li BY, Lin Y, Du DM. Organocatalytic Asymmetric Mannich Addition of 3-Fluorooxindoles to Dibenzo[ b, f][1,4]oxazepines: Highly Enantioselective Construction of Tetrasubstituted C-F Stereocenters. J Org Chem 2019; 84:11752-11762. [PMID: 31408331 DOI: 10.1021/acs.joc.9b01507] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
3-Fluorooxindoles and the dibenzo[b,f][1,4]oxazepane scaffolds are important pharmacophores that have important application in medicinal chemistry. An organocatalyzed asymmetric Mannich reaction of 3-fluorooxindoles with dibenzo[b,f][1,4]oxazepines affording various seven-member cyclic amines containing chiral tetrasubstituted C-F stereocenters was developed. These reactions which were catalyzed by a bifunctional Cinchona alkaloid-derived thiourea catalyst afforded a wide range of substrates in moderate to high yields with excellent diastereo- and enantioselectivities (up to 88% yield, >20:1 dr and >99% ee). A feasible reaction mechanism was also proposed.
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Affiliation(s)
- Bing-Yu Li
- School of Chemistry and Chemical Engineering , Beijing Institute of Technology , Beijing 100081 , People's Republic of China
| | - Ye Lin
- School of Chemistry and Chemical Engineering , Beijing Institute of Technology , Beijing 100081 , People's Republic of China
| | - Da-Ming Du
- School of Chemistry and Chemical Engineering , Beijing Institute of Technology , Beijing 100081 , People's Republic of China
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44
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Thanzeel FY, Balaraman K, Wolf C. Streamlined Asymmetric Reaction Development: A Case Study with Isatins. Chemistry 2019; 25:11020-11025. [DOI: 10.1002/chem.201902688] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 07/08/2019] [Indexed: 12/31/2022]
Affiliation(s)
- F. Yushra Thanzeel
- Department of Chemistry Georgetown University 37th and O Streets Washington DC 20057 USA
| | - Kaluvu Balaraman
- Department of Chemistry Georgetown University 37th and O Streets Washington DC 20057 USA
| | - Christian Wolf
- Department of Chemistry Georgetown University 37th and O Streets Washington DC 20057 USA
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45
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Ji J, Chen L, Qiu Z, Ren X, Li Y. Visible‐Light Photoredox‐Catalyzed Cross‐Dehydrogenative Coupling of Tetrahydroisoquinolines with 3‐Fluorooxindoles. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900378] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Jian Ji
- College of Chemistry and Chemical EngineeringShanghai University of Engineering Science 333 Longteng Road Shanghai 201620 China
| | - Ling‐Yan Chen
- College of Chemistry and Chemical EngineeringShanghai University of Engineering Science 333 Longteng Road Shanghai 201620 China
| | - Zi‐Bin Qiu
- College of Chemistry and Chemical EngineeringShanghai University of Engineering Science 333 Longteng Road Shanghai 201620 China
| | - Xinfeng Ren
- College of Chemistry and Chemical EngineeringShanghai University of Engineering Science 333 Longteng Road Shanghai 201620 China
| | - Ya Li
- College of Chemistry and Chemical EngineeringShanghai University of Engineering Science 333 Longteng Road Shanghai 201620 China
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46
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Sempere Y, Alfke JL, Rössler SL, Carreira EM. Morpholine Ketene Aminal as Amide Enolate Surrogate in Iridium‐Catalyzed Asymmetric Allylic Alkylation. Angew Chem Int Ed Engl 2019; 58:9537-9541. [DOI: 10.1002/anie.201903090] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Indexed: 01/24/2023]
Affiliation(s)
- Yeshua Sempere
- Laboratorium für Organische Chemie, HCI H335Eidgenössische Technische Hochschule Zürich Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
| | - Jan L. Alfke
- Laboratorium für Organische Chemie, HCI H335Eidgenössische Technische Hochschule Zürich Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
| | - Simon L. Rössler
- Laboratorium für Organische Chemie, HCI H335Eidgenössische Technische Hochschule Zürich Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
| | - Erick M. Carreira
- Laboratorium für Organische Chemie, HCI H335Eidgenössische Technische Hochschule Zürich Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
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47
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Sempere Y, Alfke JL, Rössler SL, Carreira EM. Morpholine Ketene Aminal as Amide Enolate Surrogate in Iridium‐Catalyzed Asymmetric Allylic Alkylation. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201903090] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Yeshua Sempere
- Laboratorium für Organische Chemie, HCI H335Eidgenössische Technische Hochschule Zürich Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
| | - Jan L. Alfke
- Laboratorium für Organische Chemie, HCI H335Eidgenössische Technische Hochschule Zürich Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
| | - Simon L. Rössler
- Laboratorium für Organische Chemie, HCI H335Eidgenössische Technische Hochschule Zürich Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
| | - Erick M. Carreira
- Laboratorium für Organische Chemie, HCI H335Eidgenössische Technische Hochschule Zürich Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
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48
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Park S, Adamson NJ, Malcolmson SJ. Brønsted acid and Pd-PHOX dual-catalysed enantioselective addition of activated C-pronucleophiles to internal dienes. Chem Sci 2019; 10:5176-5182. [PMID: 31183071 PMCID: PMC6524568 DOI: 10.1039/c9sc00633h] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Accepted: 04/16/2019] [Indexed: 12/21/2022] Open
Abstract
We describe the development of Pd-PHOX-catalysed enantioselective couplings of internal dienes with malononitrile and other activated C-pronucleophiles. Reactions are dramatically accelerated by the addition of Et3N·HBArF 4 as a Brønsted acid co-catalyst, enabling a suite of products bearing a variety of alkyl substituents at the stereogenic carbon to be prepared. A series of mechanism-oriented experiments reveal key aspects of the catalytic cycle and the importance of the non-coordinating BArF 4 counterion in not only promoting reactions of internal dienes but also additions of previously unreactive nucleophiles towards terminal dienes.
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Affiliation(s)
- Sangjune Park
- Department of Chemistry , Duke University , French Family Science Center , 124 Science Drive , Durham , NC 27708 , USA .
| | - Nathan J Adamson
- Department of Chemistry , Duke University , French Family Science Center , 124 Science Drive , Durham , NC 27708 , USA .
| | - Steven J Malcolmson
- Department of Chemistry , Duke University , French Family Science Center , 124 Science Drive , Durham , NC 27708 , USA .
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49
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Zhao J, Li Y, Chen LY, Ren X. Enantioselective Mannich Reactions of 3-Fluorooxindoles with Cyclic N-Sulfamidate Aldimines. J Org Chem 2019; 84:5099-5108. [PMID: 30977656 DOI: 10.1021/acs.joc.9b00007] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Both the 3-fluorooxindole and cyclic sulfamidate frameworks are important in medicinal chemistry owing to their associated biological activities. We report an approach accessing 3-fully substituted 3-fluorooxindoles, containing a benzo-fused sulfamidate subunit through highly enantioselective Mannich-type reactions between 3-fluorooxindoles and cyclic benzo-fused N-sulfamidate aldimines. These reactions are promoted by a commercially available cinchona alkaloid catalyst, accommodate a broad substrate scope, and deliver the desired products in a yield of up to 99% with an enantiomeric excess of up to 94%. A plausible reaction pathway is also presented.
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Affiliation(s)
- Jianbo Zhao
- Department of Chemistry and Chemical Engineering , Shanghai University of Engineering Science , 333 Longteng Road , Shanghai 201620 , China
| | - Ya Li
- Department of Chemistry and Chemical Engineering , Shanghai University of Engineering Science , 333 Longteng Road , Shanghai 201620 , China
| | - Ling-Yan Chen
- Department of Chemistry and Chemical Engineering , Shanghai University of Engineering Science , 333 Longteng Road , Shanghai 201620 , China
| | - Xinfeng Ren
- Department of Chemistry and Chemical Engineering , Shanghai University of Engineering Science , 333 Longteng Road , Shanghai 201620 , China
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50
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Gong Y, Yu J, Hao Y, Zhou Y, Zhou J. Catalytic Enantioselective Aldol‐Type Reaction Using α‐Fluorinated Enolates. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900071] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Yi Gong
- College of pharmacyGuiyang University of Chinese Medicine Guiyang 550025 China
| | - Jin‐Sheng Yu
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development; Shanghai Key Laboratory of Green Chemistry and Chemical ProcessesEast China Normal University 3663 N Zhongshan Road Shanghai 200062 China
| | - Yong‐Jia Hao
- College of pharmacyGuiyang University of Chinese Medicine Guiyang 550025 China
| | - Ying Zhou
- College of pharmacyGuiyang University of Chinese Medicine Guiyang 550025 China
| | - Jian Zhou
- College of pharmacyGuiyang University of Chinese Medicine Guiyang 550025 China
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development; Shanghai Key Laboratory of Green Chemistry and Chemical ProcessesEast China Normal University 3663 N Zhongshan Road Shanghai 200062 China
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic Chemistry, CAS Shanghai 200032 China
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