1
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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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2
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Yang J, Xie ZY, Ye YJ, Ye SB, Wang YB, Wang WT, Qian PC, Song RJ, Sun Q, Ye LW, Li L. Ir/Zn-cocatalyzed chemo- and atroposelective [2+2+2] cycloaddition for construction of C─N axially chiral indoles and pyrroles. SCIENCE ADVANCES 2023; 9:eadk1704. [PMID: 38117883 PMCID: PMC10732529 DOI: 10.1126/sciadv.adk1704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 11/20/2023] [Indexed: 12/22/2023]
Abstract
Here, an Ir/Zn-cocatalyzed atroposelective [2+2+2] cycloaddition of 1,6-diynes and ynamines was developed, forging various functionalized C─N axially chiral indoles and pyrroles in generally good to excellent yields (up to 99%), excellent chemoselectivities, and high enantioselectivities (up to 98% enantiomeric excess) with wide substrate scope. This cocatalyzed strategy not only provided an alternative promising and reliable way for asymmetric alkyne [2+2+2] cyclotrimerization in an easy handle but also settled the issues of previous [Rh(COD)2]BF4-catalyzed system on the construction of C─N axial chirality such as complex operations, limited substrate scope, and low efficiency. In addition, control experiments and theoretical calculations disclosed that Zn(OTf)2 markedly reduced the barrier of migration insertion to significantly increase reaction efficiency, which was distinctly different from previous work on the Lewis acid for improving reaction yield through accelerating oxidative addition and reductive elimination.
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Affiliation(s)
- Jian Yang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Zhong-Yang Xie
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Yu-Jie Ye
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Sheng-Bing Ye
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Yi-Bo Wang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Wen-Tao Wang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Peng-Cheng Qian
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
- Wenzhou Key Laboratory of Technology and Application of Environmental Functional Materials, Institute of New Materials and Industry Technology, Wenzhou University, Wenzhou 325000, China
| | - Ren-Jie Song
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
| | - Qing Sun
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
| | - Long-Wu Ye
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Long Li
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
- Wenzhou Key Laboratory of Technology and Application of Environmental Functional Materials, Institute of New Materials and Industry Technology, Wenzhou University, Wenzhou 325000, China
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
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3
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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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4
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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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5
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Lauzon S, Ollevier T. Fluorine in metal-catalyzed asymmetric transformations: the lightest halogen causing a massive effect. Chem Sci 2022; 13:10985-11008. [PMID: 36320478 PMCID: PMC9516955 DOI: 10.1039/d2sc01096h] [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: 02/21/2022] [Accepted: 08/06/2022] [Indexed: 11/21/2022] Open
Abstract
This review aims at providing an overview of the most significant applications of fluorine-containing ligands reported in the literature starting from 2001 until mid-2021. The ligands are classified according to the nature of the donor atoms involved. This review highlights both metal-ligand interactions and the structure-reactivity relationships resulting from the presence of the fluorine atom or fluorine-containing substituents on chiral catalysts.
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Affiliation(s)
- Samuel Lauzon
- Département de Chimie, Université Laval 1045 Avenue de la Médecine Québec QC G1V 0A6 Canada
| | - Thierry Ollevier
- Département de Chimie, Université Laval 1045 Avenue de la Médecine Québec QC G1V 0A6 Canada
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6
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Mu B, Gao Y, Yang F, Wu W, Zhang Y, Wang X, Yu J, Zhou J. The Bifunctional Silyl Reagent Me
2
(CH
2
Cl)SiCF
3
Enables Highly Enantioselective Ketone Trifluoromethylation and Related Tandem Processes. Angew Chem Int Ed Engl 2022; 61:e202208861. [DOI: 10.1002/anie.202208861] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Indexed: 12/14/2022]
Affiliation(s)
- Bo‐Shuai Mu
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering East China Normal University 3663N Zhongshan Road Shanghai 200062 China
| | - Yang Gao
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering East China Normal University 3663N Zhongshan Road Shanghai 200062 China
| | - Fu‐Ming Yang
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering East China Normal University 3663N Zhongshan Road Shanghai 200062 China
| | - Wen‐Biao Wu
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering East China Normal University 3663N Zhongshan Road Shanghai 200062 China
| | - Ying Zhang
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering East China Normal University 3663N Zhongshan Road Shanghai 200062 China
| | - Xin Wang
- College of Chemistry Sichuan University Chengdu 610064 China
| | - Jin‐Sheng Yu
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering East China Normal University 3663N Zhongshan Road Shanghai 200062 China
| | - Jian Zhou
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering East China Normal University 3663N Zhongshan Road Shanghai 200062 China
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry CAS Shanghai 200032 China
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7
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Mu BS, Gao Y, Yang FM, Wu WB, Zhang Y, Wang X, Yu JS, Zhou J. The Bifunctional Silyl Reagent Me2(CH2Cl)SiCF3 Enabled Highly Enantioselective Ketone Trifluoromethylation and Related Tandem Processes. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202208861] [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)
- Bo-Shuai Mu
- East China Normal University Department of chemistry CHINA
| | - Yang Gao
- East China Normal University Department of chemistry CHINA
| | - Fu-Ming Yang
- East China Normal University Department of chemistry CHINA
| | - Wen-Biao Wu
- East China Normal University Department of chemistry CHINA
| | - Ying Zhang
- East China Normal University Department of chemistry CHINA
| | - Xin Wang
- Sichuan University College of Chemistry CHINA
| | - Jin-Sheng Yu
- East China Normal University Department of chemistry CHINA
| | - Jian Zhou
- East China Normal University Department of Chemistry 3663 N. Zhongshan Road, , 200062 Shanghai CHINA
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8
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Wang H, Hu M, Wang XN, Chang J. Metal-free hydroalkoxylation of ynesulfonamides with alcohols. Org Biomol Chem 2022; 20:3408-3412. [PMID: 35380156 DOI: 10.1039/d2ob00420h] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Efforts for developing a convenient and expeditious method for synthesizing alkoxy-substituted enamides via nucleophilic addition of alcohols to ynesulfonamides are described. This sequence is completely regioselective and highly stereoselective, and leads to the hydroalkoxylation products in high yields under mild reaction conditions.
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Affiliation(s)
- Hanhan Wang
- Collaborative Innovation Center of New Drug Research and Safety Evaluation, Henan Province, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, P. R. China.
| | - Mengjun Hu
- Collaborative Innovation Center of New Drug Research and Safety Evaluation, Henan Province, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, P. R. China.
| | - Xiao-Na Wang
- Collaborative Innovation Center of New Drug Research and Safety Evaluation, Henan Province, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, P. R. China.
| | - Junbiao Chang
- Collaborative Innovation Center of New Drug Research and Safety Evaluation, Henan Province, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, P. R. China.
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9
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Willand-Charnley R, Paris TJ. Modern Synthesis and Chemistry of Stabilized Ketene N,O-Acetals. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/a-1713-8481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
AbstractKetene N,O-acetals are robust and versatile synthons. Herein, we outline the synthesis of stable ketene N,O-acetals in the twenty-first century. In addition, we review recent developments in the chemistry of ketene N,O-acetals, as it applies to the vinylogous Mukaiyama aldol reaction, electrolysis, and pericyclic transformations. While dated reports rely on in situ use, modern methods of ketene N,O-acetal synthesis are heavily oriented towards producing products with high ‘bench’ stability; moreover, in the present century, chemists typically enhance the stability of ketene N,O-acetals by positioning an electron-withdrawing group at the β-terminus or at the N-position. As propitious substrates in the vinylogous Mukaiyama aldol reaction, ketene N,O-acetals readily provide polyketide adducts with high regioselectivity. When exposed to electrolysis conditions, the title functional group forms a reactive radical cation and cleanly couples with a variety of activated olefins. Given their electron-rich nature, ketene N,O-acetals act as facile substrates in several rearrangement reactions; further, ketene N,O-acetals reserve the ability to act as either dienophiles or dienes in Diels–Alder reactions. Lastly, ketene N,O-acetals are seemingly more stable than their O,O-counterparts and more reactive than analogous N,N- or S,S-acetals; these factors, in combination, make ketene N,O-acetals advantageous substitutes for other ketene acetal homologues.1 Introduction2 Select Methods of Stabilization-Oriented Ketene N,O-Acetal Synthesis3 Ketene N,O-Acetals in the Vinylogous Mukaiyama Aldol Reaction4 Ketene N,O-Acetals in Anodic Coupling and Electrochemical Oxidation Reactions5 Rearrangement and Diels–Alder Reactions of Ketene N,O-Acetals6 Conclusions, Perspectives, and Directions
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Affiliation(s)
| | - Timothy J. Paris
- Medicinal Chemistry Knowledge Center, Stanford ChEM-H, Stanford University
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10
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Madhu D, Jetti VR, Narsaiah B, Punna N. 3-Trifluoroacetyl-quinolin-2(1 H)-ones as Carbonyl and Acid Surrogates in the Passerini-/Ugi-Type Reaction. J Org Chem 2022; 87:2301-2314. [PMID: 35157465 DOI: 10.1021/acs.joc.1c02107] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Herein, we report tailored 3-trifluoroacetyl-quinolin-2(1H)-ones (1) as carbonyl and acid surrogates in Passerini- and Ugi-type reactions for the synthesis of α-trifluoromethyl-α-hydroxy carboxamides (4) and α-trifluoromethyl α-amino acids (6) in high yields, respectively. The reaction proceeds under mild reaction conditions via an exocyclic carboximidate intermediate (3). The amide group in compound 1 acts as an acid component as well as a reversible oxygen nucleophile to facilitate the reaction.
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Affiliation(s)
- Desagoni Madhu
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Vatsala Rani Jetti
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Banda Narsaiah
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Nagender Punna
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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11
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Luo X, Wang S, Lei A. Electrochemical‐induced hydroxysulfonylation of α‐CF3 alkenes to access tertiary β‐hydroxysulfones. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202101393] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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12
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Ni C, Yu H, Liu L, Yan B, Zhang B, Ma X, Zhang X, Yang Z. An efficient catalytic method for the borohydride reaction of esters using diethylzinc as precatalyst. NEW J CHEM 2022. [DOI: 10.1039/d2nj03136a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A cheap and easily available ZnEt2 is an effective precatalyst, which can be used for the hydroboration reaction of various organic carbonates and esters with HBpin.
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Affiliation(s)
- Congjian Ni
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, P. R. China
| | - Hailong Yu
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, P. R. China
| | - Ling Liu
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, P. R. China
| | - Ben Yan
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, P. R. China
| | - Bingyi Zhang
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, P. R. China
| | - Xiaoli Ma
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, P. R. China
| | - Xiuhui Zhang
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, P. R. China
| | - Zhi Yang
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, P. R. China
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13
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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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14
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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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15
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Ye ZP, Gao J, Duan XY, Guan JP, Liu F, Chen K, Xiao JA, Xiang HY, Yang H. Electrochemical heterodifunctionalization of α-CF 3 alkenes to access α-trifluoromethyl-β-sulfonyl tertiary alcohols. Chem Commun (Camb) 2021; 57:8969-8972. [PMID: 34486594 DOI: 10.1039/d1cc03288g] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
An unprecedented electrochemical heterodifunctionalization of α-CF3 alkenes with benzenesulfonyl hydrazides was accomplished in this work, wherein a β-sulfonyl and a α-hydroxyl group were simultaneously incorporated across the olefinic double bond in a single operation. Consequently, a series of potentially medicinally valuable and densely functionalized α-trifluoromethyl-β-sulfonyl tertiary alcohols were assembled under mild conditions. Electrochemically-driven oxidative 1,2-difunctionlization of electron-deficient alkenes well obviates the need for oxidizing reagents, thus rendering this protocol more eco-friendly.
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Affiliation(s)
- Zhi-Peng Ye
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China.
| | - Jie Gao
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China.
| | - Xin-Yu Duan
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China.
| | - Jian-Ping Guan
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China.
| | - Fang Liu
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China.
| | - Kai Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China.
| | - Jun-An Xiao
- College of Chemistry and Materials Science, Nanning Normal University, Nanning 530001, Guangxi, P. R. China
| | - Hao-Yue Xiang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China. .,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, Henan, P. R. China
| | - Hua Yang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China.
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16
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Chen YX, Wang ZJ, Xiao JA, Chen K, Xiang HY, Yang H. Visible-Light-Driven Sulfonation of α-Trifluoromethylstyrenes: Access to Densely Functionalized CF 3-Substituted Tertiary Alcohol. Org Lett 2021; 23:6558-6562. [PMID: 34342456 DOI: 10.1021/acs.orglett.1c02365] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Reported herein is a visible-light-induced sulfonation of α-trifluoromethylstyrenes with sodium sulfinates, which provides a series of α-trifluoromethyl-β-sulfonyl tertiary alcohols. This new synthetic protocol is enabled by a charge-transfer complex between oxygen and sulfinates, featuring broad substrate scope and scalability. Excellent functional group compatibility and chemoselectivity render this method suitable for sulfonation of pharmaceutically relevant molecules. In the presence of D2O, deuteriotrifluorinated products were also obtained, further demonstrating the flexibility and synthetic potentials of this strategy.
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Affiliation(s)
- Yi-Xuan Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Zhu-Jun Wang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Jun-An Xiao
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, Guangxi, P. R. China
| | - Kai Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Hao-Yue Xiang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China.,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, Henan, P. R. China
| | - Hua Yang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
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17
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18
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Gao E, Peng C, Zhang J, Wang XN, Chang J. Metal-free hydroalkoxylation of ynesulfonamides with esters. Org Biomol Chem 2021; 19:2182-2185. [PMID: 33599674 DOI: 10.1039/d0ob02575e] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient metal-free hydroalkoxylation reaction of ynesulfonamides with esters under mild conditions is described. Under the catalysis of TMSOTf, various ynesulfonamides are transformed into the corresponding alkoxy-substituted enamides in high yields with complete regioselectivity and high to excellent stereoselectivity.
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Affiliation(s)
- Erhui Gao
- Collaborative Innovation Center of New Drug Research and Safety Evaluation, Henan Province, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, P. R. China.
| | - Cheng Peng
- Collaborative Innovation Center of New Drug Research and Safety Evaluation, Henan Province, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, P. R. China.
| | - Jingyi Zhang
- Collaborative Innovation Center of New Drug Research and Safety Evaluation, Henan Province, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, P. R. China.
| | - Xiao-Na Wang
- Collaborative Innovation Center of New Drug Research and Safety Evaluation, Henan Province, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, P. R. China.
| | - Junbiao Chang
- Collaborative Innovation Center of New Drug Research and Safety Evaluation, Henan Province, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, P. R. China.
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19
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Prieto E, Infante R, Nieto J, Andrés C. Dimethylzinc-mediated enantioselective addition of terminal alkynes to 1,2-diketones using perhydro-1,3-benzoxazines as ligands. Org Biomol Chem 2021; 19:3859-3867. [PMID: 33949556 DOI: 10.1039/d1ob00249j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A conformationally restricted perhydro-1,3-benzoxazine derived from (-)-8-aminomenthol behaves as a good chiral ligand in the dimethylzinc-mediated enantioselective monoaddition of aromatic and aliphatic terminal alkynes to 1,2-diketones. The corresponding α-hydroxyketones were obtained in good yields with high enantioselectivities starting from both aromatic and aliphatic 1,2-diketones. The alkynylation of unsymmetrical 1,2-diketones with electronically different substituents also proceeds with high regio- and enantioselectivity. This reaction provides a practical method to synthesize ketones bearing a chiral tertiary propargylic alcohol.
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Affiliation(s)
- Elena Prieto
- Instituto CINQUIMA and Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Valladolid, Paseo de Belén, 7, 47011 Valladolid, Spain.
| | - Rebeca Infante
- Instituto CINQUIMA and Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Valladolid, Paseo de Belén, 7, 47011 Valladolid, Spain.
| | - Javier Nieto
- Instituto CINQUIMA and Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Valladolid, Paseo de Belén, 7, 47011 Valladolid, Spain.
| | - Celia Andrés
- Instituto CINQUIMA and Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Valladolid, Paseo de Belén, 7, 47011 Valladolid, Spain.
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20
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Mg/BOX complexes as efficient catalysts for the enantioselective Michael addition of malonates to β-trifluoromethyl-α,β-unsaturated ketones and their N-tosyl imines. Tetrahedron 2021. [DOI: 10.1016/j.tet.2020.131897] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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21
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Lynch CC, Sripada A, Wolf C. Asymmetric synthesis with ynamides: unique reaction control, chemical diversity and applications. Chem Soc Rev 2020; 49:8543-8583. [PMID: 33073285 PMCID: PMC8383824 DOI: 10.1039/d0cs00769b] [Citation(s) in RCA: 106] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Ynamides are among the most powerful building blocks in organic synthesis and have become invaluable starting materials for the construction of multifunctional compounds and challenging architectures that would be difficult to prepare otherwise. The rapidly growing popularity originates from the unique reactivity and ease of manipulation of the polarized ynamide triple bond, the advance of practical methods for making them, and the simplicity of storage and handling. These attractive features and the demonstration of numerous synthetic applications have spurred the development of intriguing asymmetric reaction strategies during the last decade. An impressive variety of chemo-, regio- and stereoselective carbon-carbon and carbon-heteroatom bond forming reactions with ynamides have been developed and now significantly enrich the toolbox of synthetic chemists. This review provides a comprehensive overview of asymmetric ynamide chemistry since 2010 with a focus on the general scope, current limitations, stereochemical reaction control and mechanistic aspects.
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Affiliation(s)
- Ciarán C Lynch
- Department of Chemistry, Georgetown University, 37th and O Streets, Washington, DC 20057, USA.
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22
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Luo J, Chen GS, Chen SJ, Yu JS, Li ZD, Liu YL. Exploiting Remarkable Reactivities of Ynamides: Opportunities in Designing Catalytic Enantioselective Reactions. ACS Catal 2020. [DOI: 10.1021/acscatal.0c04180] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Jian Luo
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China
| | - Guo-Shu Chen
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China
| | - Shu-Jie Chen
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China
| | - Jin-Sheng Yu
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Zhao-Dong Li
- Department of Applied Chemistry, College of Materials and Energy, South China Agricultural University Wushan Street five road No. 483, Guangzhou 510642, China
| | - Yun-Lin Liu
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China
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23
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Książek M, Weselski M, Kaźmierczak M, Tołoczko A, Siczek M, Durlak P, Wolny JA, Schünemann V, Kusz J, Bronisz R. Spatiotemporal Studies of the One-Dimensional Coordination Polymer [Fe(ebtz) 2 (C 2 H 5 CN) 2 ](BF 4 ) 2 : Tug of War between the Nitrile Reorientation Versus Crystal Lattice as a Tool for Tuning the Spin Crossover Properties*. Chemistry 2020; 26:14419-14434. [PMID: 32678463 DOI: 10.1002/chem.202002460] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Indexed: 12/21/2022]
Abstract
Reaction of 1,2-di(tetrazol-2-yl)ethane (ebtz) with Fe(BF4 )2 ⋅6 H2 O in different nitriles yields one-dimensional coordination polymers [Fe(ebtz)2 (RCN)2 ](BF4 )2 ⋅nRCN (n=2 for R=CH3 (1) and n=0 for R=C2 H5 (2) C3 H7 (3), C3 H5 (4), CH2 Cl (5)) exhibiting spin crossover (SCO). SCO in 1 and 3-5 is complete and occurs above 160 K. In 2, it is shifted to lower temperatures and is accompanied by wide hysteresis (T1/2 ↓ =78 K, T1/2 ↑ =123 K) and proceeds extremely slowly. Isothermal (80 K) time-resolved single-crystal X-ray diffraction studies revealed a complex nature for the HS→LS transition in 2. An initial, slow stage is associated with shrinkage of polymeric chains and with reduction of volume at 77 % (in relation to the difference between cell volumes VHS -VLS ) whereas only 16 % of iron(II) ions change spin state. In the second stage, an abrupt SCO occurs, associated with breathing of the crystal lattice along the direction of the Fe-nitrile bonds, while the nitriles reorient. HS→LS switching triggered by light (808 nm) reveals the coupling of spin state and nitrile orientation. The importance of this coupling was confirmed by studies of [Fe(ebtz)2 (C2 H5 CN/C3 H7 CN)2 ](BF4 )2 mixed crystals (2 a, 2 b), showing a shift of T1/2 to higher values and narrowing of the hysteresis loop concomitant with an increase of the fraction of butyronitrile. This increase reduces the capability of nitrile molecules to reorient. Density functional theory (DFT) studies of models of 1-5 suggest a particular possibility of 2 to adopt a low (140-145°) value of its Fe-N-C(propionitrile) angle.
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Affiliation(s)
- Maria Książek
- Institute of Physics, University of Silesia, 75 Pułku Piechoty 1, 41-500, Chorzów, Poland
| | - Marek Weselski
- Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383, Wrocław, Poland
| | - Marcin Kaźmierczak
- Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383, Wrocław, Poland
| | - Aleksandra Tołoczko
- Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383, Wrocław, Poland
| | - Miłosz Siczek
- Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383, Wrocław, Poland
| | - Piotr Durlak
- Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383, Wrocław, Poland
| | - Juliusz A Wolny
- Faculty of Physics, Technische Universität Kaiserslautern, Erwin Schrödinger Str. 46, 67663, Kaiserlautern, Germany
| | - Volker Schünemann
- Faculty of Physics, Technische Universität Kaiserslautern, Erwin Schrödinger Str. 46, 67663, Kaiserlautern, Germany
| | - Joachim Kusz
- Institute of Physics, University of Silesia, 75 Pułku Piechoty 1, 41-500, Chorzów, Poland
| | - Robert Bronisz
- Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383, Wrocław, Poland
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24
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Jiang D, Tang P, Tan Q, Yang Z, He L, Zhang M. Enantioselective Alkynylation of Isatins: A Combination of Metal Catalysis and Organocatalysis. Chemistry 2020; 26:15830-15834. [PMID: 32761674 DOI: 10.1002/chem.202003118] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 07/23/2020] [Indexed: 01/30/2023]
Affiliation(s)
- Dan Jiang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research School of Pharmaceutical Sciences Chongqing University Chongqing 401331 P. R. China
| | - Pei Tang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research School of Pharmaceutical Sciences Chongqing University Chongqing 401331 P. R. China
| | - Qiuyuan Tan
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research School of Pharmaceutical Sciences Chongqing University Chongqing 401331 P. R. China
| | - Zhao Yang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research School of Pharmaceutical Sciences Chongqing University Chongqing 401331 P. R. China
| | - Ling He
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research School of Pharmaceutical Sciences Chongqing University Chongqing 401331 P. R. China
| | - Min Zhang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research School of Pharmaceutical Sciences Chongqing University Chongqing 401331 P. R. China
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany Chinese Academy of Sciences Kunming 650201 P. R. China
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25
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Liu R, Yang S, Chen Z, Kong X, Ding H, Fang X. Lewis-Acid-Catalyzed Asymmetric Alkynylation of Alkynyl 1,2-Diketones: Controllable Formation of 3(2H)-Furanones and α-Hydroxy Ketones. Org Lett 2020; 22:6948-6953. [DOI: 10.1021/acs.orglett.0c02505] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Rui Liu
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, and State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, University of Chinese Academy of Sciences, Fuzhou 350100, China
| | - Shuang Yang
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, and State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, University of Chinese Academy of Sciences, Fuzhou 350100, China
| | - Zhizhou Chen
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, and State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, University of Chinese Academy of Sciences, Fuzhou 350100, China
| | - Xiangwen Kong
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, and State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, University of Chinese Academy of Sciences, Fuzhou 350100, China
| | - Houqiang Ding
- The First Affiliated Hospital of Shandong First Medical University, Jinan 250014, China
| | - Xinqiang Fang
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, and State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, University of Chinese Academy of Sciences, Fuzhou 350100, China
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26
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Sun Y, Lu C, Zhao B, Xue M. Enantioselective Hydroboration of Ketones Catalyzed by Rare-Earth Metal Complexes Containing Trost Ligands. J Org Chem 2020; 85:10504-10513. [PMID: 32589850 DOI: 10.1021/acs.joc.0c00877] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Four chiral dinuclear rare-earth metal complexes [REL1]2 (RE = Y(1), Eu(2), Nd(3), La (4)) stabilized by Trost proligand H3L1 (H3L1 = (S,S)-2,6-bis[2-(hydroxydiphenylmethyl)pyrrolidin-1-ylmethyl]-4-methylphenol) were first prepared, and all were characterized by X-ray diffraction. Complex 4 was employed as the catalyst for enantioselective hydroboration reaction of substituted ketones, and the corresponding secondary alcohols with excellent yields and high ee values were obtained using reductant HBpin. The same result was also achieved using the combination of lanthanium amides La[N(SiMe3)2]3 with Trost proligand H3L1 in a 1:1 molar ratio. The experimental findings and DFT calculation revealed the possible mechanism of the enantioselective hydroboration reaction and defined the origin of the enantioselectivity in the current system.
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27
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Yi Y, Hua YZ, Lu HJ, Liu LT, Wang MC. Brønsted Base and Lewis Acid Cooperatively Catalyzed Asymmetric exo'-Selective [3 + 2] Cycloaddition of Trifluoromethylated Azomethine Ylides and Methyleneindolinones. Org Lett 2020; 22:2527-2531. [PMID: 32202432 DOI: 10.1021/acs.orglett.0c00283] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A Brønsted base and Lewis acid cooperatively catalyzed 1,3-dipolar cycloaddition is reported through chiral dinuclear zinc catalysts. An asymmetric exo'-selective [3 + 2] cycloaddition of CF3-containing N-unprotected isatin-derived azomethine ylides is realized. In the presence of 10 mol % of catalyst, azomethine ylides react efficiently with methyleneindolinones, giving a series of trifluoromethyl-substituted 2,3-pyrrolidinyl dispirooxindoles with highly enantio- (up to 99% ee) and exo'-selectivity (>20:1 dr). Up to four contiguous stereogenic centers, including two adjacent spiro quaternary stereocenters, are constructed in one step.
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Affiliation(s)
- Yang Yi
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, No. 100, Science Road, Zhengzhou City, Henan Province 450000, P. R. China
| | - Yuan-Zhao Hua
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, No. 100, Science Road, Zhengzhou City, Henan Province 450000, P. R. China
| | - Hui-Jie Lu
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, No. 100, Science Road, Zhengzhou City, Henan Province 450000, P. R. China
| | - Lan-Tao Liu
- School of Chemistry & Chemical Engineering, Shangqiu Normal University, Shangqiu City, Henan Province 476000, P. R. China
| | - Min-Can Wang
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, No. 100, Science Road, Zhengzhou City, Henan Province 450000, P. R. China
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28
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Trost BM, Hung C(J, Mata G. Zweikernige Metall‐ProPhenol‐Katalysatoren: Entwicklung und Anwendungen in der Synthese. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201909692] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Barry M. Trost
- Department of ChemistryStanford University 333 Campus Drive Stanford CA 94305 USA
| | - Chao‐I (Joey) Hung
- Department of ChemistryStanford University 333 Campus Drive Stanford CA 94305 USA
| | - Guillaume Mata
- Department of ChemistryStanford University 333 Campus Drive Stanford CA 94305 USA
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29
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Park D, Jette CI, Kim J, Jung W, Lee Y, Park J, Kang S, Han MS, Stoltz BM, Hong S. Enantioselective Alkynylation of Trifluoromethyl Ketones Catalyzed by Cation‐Binding Salen Nickel Complexes. Angew Chem Int Ed Engl 2020; 59:775-779. [DOI: 10.1002/anie.201913057] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Revised: 11/06/2019] [Indexed: 01/11/2023]
Affiliation(s)
- Dongseong Park
- Department of ChemistryGwangju Institute of Science and Technology (GIST) 123 Cheomdan-gwagiro Buk-gu Gwangju 61005 Republic of Korea
| | - Carina I. Jette
- Warren And Katharine Schlinger Laboratory for Chemistry and Chemical EngineeringCalifornia Institute of Technology Pasadena CA 91125 USA
| | - Jiyun Kim
- Department of ChemistryGwangju Institute of Science and Technology (GIST) 123 Cheomdan-gwagiro Buk-gu Gwangju 61005 Republic of Korea
| | - Woo‐Ok Jung
- Department of ChemistryGwangju Institute of Science and Technology (GIST) 123 Cheomdan-gwagiro Buk-gu Gwangju 61005 Republic of Korea
| | - Yongmin Lee
- School of Materials Science and EngineeringGwangju Institute of Science and Technology (GIST) 123 Cheomdan-gwagiro Buk-gu Gwangju 61005 Republic of Korea
| | - Jongwoo Park
- Department of ChemistryUniversity of Florida P.O.Box 117200 Gainesville FL 32611-7200 USA
- Current address: Process R&D CenterSK biotek 325 Exporo Yuseong-gu Daejeon 34124 Republic of Korea
| | - Seungyoon Kang
- Department of ChemistryGwangju Institute of Science and Technology (GIST) 123 Cheomdan-gwagiro Buk-gu Gwangju 61005 Republic of Korea
| | - Min Su Han
- Department of ChemistryGwangju Institute of Science and Technology (GIST) 123 Cheomdan-gwagiro Buk-gu Gwangju 61005 Republic of Korea
| | - Brian M. Stoltz
- Warren And Katharine Schlinger Laboratory for Chemistry and Chemical EngineeringCalifornia Institute of Technology Pasadena CA 91125 USA
| | - Sukwon Hong
- Department of ChemistryGwangju Institute of Science and Technology (GIST) 123 Cheomdan-gwagiro Buk-gu Gwangju 61005 Republic of Korea
- School of Materials Science and EngineeringGwangju Institute of Science and Technology (GIST) 123 Cheomdan-gwagiro Buk-gu Gwangju 61005 Republic of Korea
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30
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Wang J, Zhang W, Wu P, Huang C, Zheng Y, Zheng WF, Qian H, Ma S. Chiral tertiary propargylic alcohols via Pd-catalyzed carboxylative kinetic resolution. Org Chem Front 2020. [DOI: 10.1039/d0qo01106a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A highly efficient Pd/H+-cocatalyzed kinetic resolution reaction of tertiary propargylic alcohols has been reported.
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Affiliation(s)
- Jie Wang
- Research Center for Molecular Recognition and Synthesis
- Department of Chemistry
- Fudan University
- Shanghai 200433
- P. R. China
| | - Wanli Zhang
- Research Center for Molecular Recognition and Synthesis
- Department of Chemistry
- Fudan University
- Shanghai 200433
- P. R. China
| | - Penglin Wu
- Research Center for Molecular Recognition and Synthesis
- Department of Chemistry
- Fudan University
- Shanghai 200433
- P. R. China
| | - Chaofan Huang
- Research Center for Molecular Recognition and Synthesis
- Department of Chemistry
- Fudan University
- Shanghai 200433
- P. R. China
| | - Yangguangyan Zheng
- Research Center for Molecular Recognition and Synthesis
- Department of Chemistry
- Fudan University
- Shanghai 200433
- P. R. China
| | - Wei-Feng Zheng
- Research Center for Molecular Recognition and Synthesis
- Department of Chemistry
- Fudan University
- Shanghai 200433
- P. R. China
| | - Hui Qian
- Research Center for Molecular Recognition and Synthesis
- Department of Chemistry
- Fudan University
- Shanghai 200433
- P. R. China
| | - Shengming Ma
- Research Center for Molecular Recognition and Synthesis
- Department of Chemistry
- Fudan University
- Shanghai 200433
- P. R. China
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31
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Park D, Jette CI, Kim J, Jung W, Lee Y, Park J, Kang S, Han MS, Stoltz BM, Hong S. Enantioselective Alkynylation of Trifluoromethyl Ketones Catalyzed by Cation‐Binding Salen Nickel Complexes. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201913057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Dongseong Park
- Department of ChemistryGwangju Institute of Science and Technology (GIST) 123 Cheomdan-gwagiro Buk-gu Gwangju 61005 Republic of Korea
| | - Carina I. Jette
- Warren And Katharine Schlinger Laboratory for Chemistry and Chemical EngineeringCalifornia Institute of Technology Pasadena CA 91125 USA
| | - Jiyun Kim
- Department of ChemistryGwangju Institute of Science and Technology (GIST) 123 Cheomdan-gwagiro Buk-gu Gwangju 61005 Republic of Korea
| | - Woo‐Ok Jung
- Department of ChemistryGwangju Institute of Science and Technology (GIST) 123 Cheomdan-gwagiro Buk-gu Gwangju 61005 Republic of Korea
| | - Yongmin Lee
- School of Materials Science and EngineeringGwangju Institute of Science and Technology (GIST) 123 Cheomdan-gwagiro Buk-gu Gwangju 61005 Republic of Korea
| | - Jongwoo Park
- Department of ChemistryUniversity of Florida P.O.Box 117200 Gainesville FL 32611-7200 USA
- Current address: Process R&D CenterSK biotek 325 Exporo Yuseong-gu Daejeon 34124 Republic of Korea
| | - Seungyoon Kang
- Department of ChemistryGwangju Institute of Science and Technology (GIST) 123 Cheomdan-gwagiro Buk-gu Gwangju 61005 Republic of Korea
| | - Min Su Han
- Department of ChemistryGwangju Institute of Science and Technology (GIST) 123 Cheomdan-gwagiro Buk-gu Gwangju 61005 Republic of Korea
| | - Brian M. Stoltz
- Warren And Katharine Schlinger Laboratory for Chemistry and Chemical EngineeringCalifornia Institute of Technology Pasadena CA 91125 USA
| | - Sukwon Hong
- Department of ChemistryGwangju Institute of Science and Technology (GIST) 123 Cheomdan-gwagiro Buk-gu Gwangju 61005 Republic of Korea
- School of Materials Science and EngineeringGwangju Institute of Science and Technology (GIST) 123 Cheomdan-gwagiro Buk-gu Gwangju 61005 Republic of Korea
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32
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Trost BM, Hung C(J, Mata G. Dinuclear Metal‐ProPhenol Catalysts: Development and Synthetic Applications. Angew Chem Int Ed Engl 2019; 59:4240-4261. [DOI: 10.1002/anie.201909692] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Indexed: 12/16/2022]
Affiliation(s)
- Barry M. Trost
- Department of ChemistryStanford University 333 Campus Drive Stanford CA 94305 USA
| | - Chao‐I (Joey) Hung
- Department of ChemistryStanford University 333 Campus Drive Stanford CA 94305 USA
| | - Guillaume Mata
- Department of ChemistryStanford University 333 Campus Drive Stanford CA 94305 USA
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33
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Fager DC, Lee K, Hoveyda AH. Catalytic Enantioselective Addition of an Allyl Group to Ketones Containing a Tri-, a Di-, or a Monohalomethyl Moiety. Stereochemical Control Based on Distinctive Electronic and Steric Attributes of C-Cl, C-Br, and C-F Bonds. J Am Chem Soc 2019; 141:16125-16138. [PMID: 31553181 DOI: 10.1021/jacs.9b08443] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We disclose the results of an investigation designed to generate insight regarding the differences in the electronic and steric attributes of C-F, C-Cl, and C-Br bonds. Mechanistic insight has been gleaned by analysis of variations in enantioselectivity, regarding the ability of electrostatic contact between a halomethyl moiety and a catalyst's ammonium group as opposed to factors lowering steric repulsion and/or dipole minimization. In the process, catalytic and enantioselective methods have been developed for transforming a wide range of trihalomethyl (halogen = Cl or Br), dihalomethyl, or monohalomethyl (halogen = F, Cl, or Br) ketones to the corresponding tertiary homoallylic alcohols. By exploiting electrostatic attraction between a halomethyl moiety and the catalyst's ammonium moiety and steric factors, high enantioselectivity was attained in many instances. Reactions can be performed with 0.5-5.0 mol % of an in situ generated boryl-ammonium catalyst, affording products in 42-99% yield and up to >99:1 enantiomeric ratio. Not only are there no existing protocols for accessing the great majority of the resulting products enantioselectively but also in some cases there are hardly any instances of a catalytic enantioselective addition of a carbon-based nucleophile (e.g., one enzyme-catalyzed aldol addition involving trichloromethyl ketones, and none with dichloromethyl, tribromomethyl, or dibromomethyl ketones). The approach is scalable and offers an expeditious route to the enantioselective synthesis of versatile and otherwise difficult to access aldehydes that bear an α-halo-substituted quaternary carbon stereogenic center as well as an assortment of 2,2-disubstituted epoxides that contain an easily modifiable alkene. Tertiary homoallylic alcohols containing a triazole and a halomethyl moiety, structural units relevant to drug development, may also be accessed efficiently with exceptional enantioselectivity.
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Affiliation(s)
- Diana C Fager
- Department of Chemistry, Merkert Chemistry Center , Boston College , Chestnut Hill , Massachusetts 02467 , United States
| | - KyungA Lee
- Department of Chemistry, Merkert Chemistry Center , Boston College , Chestnut Hill , Massachusetts 02467 , United States
| | - Amir H Hoveyda
- Department of Chemistry, Merkert Chemistry Center , Boston College , Chestnut Hill , Massachusetts 02467 , United States.,Supramolecular Science and Engineering Institute , University of Strasbourg, CNRS , 67000 Strasbourg , France
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34
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Xu Y, Sun Q, Tan T, Yang M, Yuan P, Wu S, Lu X, Hong X, Ye L. Organocatalytic Enantioselective Conia‐Ene‐Type Carbocyclization of Ynamide Cyclohexanones: Regiodivergent Synthesis of Morphans and Normorphans. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201908495] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Yin Xu
- State Key Laboratory of Physical Chemistry of Solid SurfacesKey Laboratory for Chemical Biology of Fujian Province, and College of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 China
| | - Qing Sun
- State Key Laboratory of Physical Chemistry of Solid SurfacesKey Laboratory for Theoretical and Computational Chemistry of Fujian Province, and College of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 China
| | - Tong‐De Tan
- State Key Laboratory of Physical Chemistry of Solid SurfacesKey Laboratory for Chemical Biology of Fujian Province, and College of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 China
| | - Ming‐Yang Yang
- State Key Laboratory of Physical Chemistry of Solid SurfacesKey Laboratory for Chemical Biology of Fujian Province, and College of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 China
| | - Peng Yuan
- State Key Laboratory of Physical Chemistry of Solid SurfacesKey Laboratory for Chemical Biology of Fujian Province, and College of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 China
| | - Shao‐Qi Wu
- Department of ChemistryZhejiang University Hangzhou 310027 China
| | - Xin Lu
- State Key Laboratory of Physical Chemistry of Solid SurfacesKey Laboratory for Theoretical and Computational Chemistry of Fujian Province, and College of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 China
| | - Xin Hong
- Department of ChemistryZhejiang University Hangzhou 310027 China
| | - Long‐Wu Ye
- State Key Laboratory of Physical Chemistry of Solid SurfacesKey Laboratory for Chemical Biology of Fujian Province, and College of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 China
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences Shanghai 200032 China
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35
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Xu Y, Sun Q, Tan TD, Yang MY, Yuan P, Wu SQ, Lu X, Hong X, Ye LW. Organocatalytic Enantioselective Conia-Ene-Type Carbocyclization of Ynamide Cyclohexanones: Regiodivergent Synthesis of Morphans and Normorphans. Angew Chem Int Ed Engl 2019; 58:16252-16259. [PMID: 31444882 DOI: 10.1002/anie.201908495] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 08/07/2019] [Indexed: 12/13/2022]
Abstract
Described herein is an organocatalytic enantioselective desymmetrizing cycloisomerization of arylsulfonyl-protected ynamide cyclohexanones, representing the first metal-free asymmetric Conia-ene-type carbocyclization. This method allows the highly efficient and atom-economical construction of a range of valuable morphans with wide substrate scope and excellent enantioselectivity (up to 97 % ee). In addition, such a cycloisomerization of alkylsulfonyl-protected ynamide cyclohexanones can lead to the divergent synthesis of normorphans as the main products with high enantioselectivity (up to 90 % ee). Moreover, theoretical calculations are employed to elucidate the origins of regioselectivity and enantioselectivity.
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Affiliation(s)
- Yin Xu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Qing Sun
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Theoretical and Computational Chemistry of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Tong-De Tan
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Ming-Yang Yang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Peng Yuan
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Shao-Qi Wu
- Department of Chemistry, Zhejiang University, Hangzhou, 310027, China
| | - Xin Lu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Theoretical and Computational Chemistry of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Xin Hong
- Department of Chemistry, Zhejiang University, Hangzhou, 310027, China
| | - Long-Wu Ye
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, China
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36
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Andna L, Miesch L. Metal-free synthesis of activated ynesulfonamides and tertiary enesulfonamides. Org Biomol Chem 2019; 17:5688-5692. [PMID: 31134243 DOI: 10.1039/c9ob00947g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
An operationally simple synthesis of activated ynesulfonamides and enesulfonamides is described. Ynesulfonamides can be obtained through reaction of sulfonylamides with activated bromoalkynes and Triton B in a short time at room temperature. Likewise, terminal alkynes react with sulfonylamides to provide enesulfonamides. Z/E enesulfonamides can be transformed exclusively into E enesulfonamides.
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Affiliation(s)
- Lucile Andna
- Equipe Synthèse Organique et Phytochimie, Institut de Chimie, CNRS-UdS UMR 7177, 4, rue Blaise Pascal CS 90032, 67081 Strasbourg, France.
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37
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Mansfield SJ, Smith RC, Yong JRJ, Garry OL, Anderson EA. A General Copper-Catalyzed Synthesis of Ynamides from 1,2-Dichloroenamides. Org Lett 2019; 21:2918-2922. [DOI: 10.1021/acs.orglett.9b00971] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
| | - Russell C. Smith
- Janssen PRD, 3210 Merryfield Row, San Diego, California 92121, United States
| | | | - Olivia L. Garry
- Chemistry Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, U.K
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38
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Moskowitz M, Wolf C. Catalytic Enantioselective Ynamide Additions to Isatins: Concise Access to Oxindole Alkaloids. Angew Chem Int Ed Engl 2019; 58:3402-3406. [PMID: 30695127 PMCID: PMC6444906 DOI: 10.1002/anie.201814074] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 01/28/2019] [Indexed: 11/05/2022]
Abstract
The highly enantioselective addition of terminal ynamides to a variety of isatins, catalyzed by a bisoxazolidine copper complex under mild, base-free reaction conditions, is described. The reaction is broad in scope, scalable, applicable to unprotected isatins, and provides efficient access to 3-hydroxyoxindoles carrying a tetrasubstituted chiral center with excellent yields and enantioselectivities. Synthetically versatile, multifunctional 3-hydroxyindolinones are obtained by hydration, partial hydrogenation, or hydroxyacyloxylation of the ynamide moiety at room temperature and exhaustive hydrogenation followed by reductive detosylation and spontaneous cyclization affords cinchonamidine alkaloids.
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Affiliation(s)
- Max Moskowitz
- Department of Chemistry, Georgetown University, 37 and O Streets, Washington, D.C. 20057 (USA)
| | - Christian Wolf
- Department of Chemistry, Georgetown University, 37 and O Streets, Washington, D.C. 20057 (USA)
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39
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Moskowitz M, Wolf C. Catalytic Enantioselective Ynamide Additions to Isatins: Concise Access to Oxindole Alkaloids. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201814074] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Max Moskowitz
- Department of Chemistry; Georgetown University; 37 and O Streets Washington DC 20057 USA
| | - Christian Wolf
- Department of Chemistry; Georgetown University; 37 and O Streets Washington DC 20057 USA
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40
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Kinetic Resolution of Tertiary Propargylic Alcohols by Enantioselective Cu−H-Catalyzed Si−O Coupling. Angew Chem Int Ed Engl 2019; 58:1970-1974. [DOI: 10.1002/anie.201813229] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Indexed: 12/25/2022]
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41
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Seliger J, Dong X, Oestreich M. Kinetische Racematspaltung tertiärer Propargylalkohole durch enantioselektive Cu-H-katalysierte Si-O-Kupplung. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201813229] [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)
- Jan Seliger
- Institut für Chemie; Technische Universität Berlin; Straße des 17. Juni 115 10623 Berlin Deutschland
| | - Xichang Dong
- Institut für Chemie; Technische Universität Berlin; Straße des 17. Juni 115 10623 Berlin Deutschland
| | - Martin Oestreich
- Institut für Chemie; Technische Universität Berlin; Straße des 17. Juni 115 10623 Berlin Deutschland
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42
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Balaraman K, Moskowitz M, Wolf C. Organocatalytic Decarboxylative Cyanomethylation of Difluoromethyl and Trifluoromethyl Ketones. Adv Synth Catal 2018; 360:4705-4709. [PMID: 31289455 DOI: 10.1002/adsc.201800876] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
An efficient organocatalytic method for the synthesis of difluoromethyl and trifluoromethyl substituted β-hydroxynitriles is introduced. The decarboxylative cyanomethylation of fluorinated ketones with readily available cyanoacetic acid gives a variety of tertiary alcohols in high yields and without concomitant water elimination. The reaction occurs in the presence of catalytic amounts of triethylamine, can be upscaled and applied to chlorofluoromethyl ketones and difluoromethyl ketimines.
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Affiliation(s)
- Kaluvu Balaraman
- Department of Chemistry, Georgetown University, 37 and O Streets, Washington, DC 20057, USA
| | - Max Moskowitz
- Department of Chemistry, Georgetown University, 37 and O Streets, Washington, DC 20057, USA
| | - Christian Wolf
- Department of Chemistry, Georgetown University, 37 and O Streets, Washington, DC 20057, USA
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43
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Liu YL, Lin XT. Recent Advances in Catalytic Asymmetric Synthesis of Tertiary Alcohols via
Nucleophilic Addition to Ketones. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201801023] [Citation(s) in RCA: 106] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Yun-Lin Liu
- School of Chemistry and Chemical Engineering; Guangzhou University; Guangzhou 510006 People's Republic of China
| | - Xiao-Tong Lin
- School of Chemistry and Chemical Engineering; Guangzhou University; Guangzhou 510006 People's Republic of China
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44
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Chen L, Huang G, Liu M, Huang Z, Chen FE. Development of Novel Chloramphenicol Scaffold-Based Chiral Hydroxyl Oxazoline Ligands and Their Application to the Asymmetric Alkynylation of Isatins. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800581] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Lei Chen
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry; Fudan University; Shanghai, 200433 People's Republic of China
- Shanghai Engineering Research Center of Industrial Asymmetric Catalysis of Chiral Drugs; 220 Handan road Shanghai 200433 People's Republic of China
| | - Guanxin Huang
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry; Fudan University; Shanghai, 200433 People's Republic of China
- Shanghai Engineering Research Center of Industrial Asymmetric Catalysis of Chiral Drugs; 220 Handan road Shanghai 200433 People's Republic of China
| | - Minjie Liu
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry; Fudan University; Shanghai, 200433 People's Republic of China
- Shanghai Engineering Research Center of Industrial Asymmetric Catalysis of Chiral Drugs; 220 Handan road Shanghai 200433 People's Republic of China
| | - Zedu Huang
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry; Fudan University; Shanghai, 200433 People's Republic of China
- Shanghai Engineering Research Center of Industrial Asymmetric Catalysis of Chiral Drugs; 220 Handan road Shanghai 200433 People's Republic of China
| | - Fen-Er Chen
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry; Fudan University; Shanghai, 200433 People's Republic of China
- Shanghai Engineering Research Center of Industrial Asymmetric Catalysis of Chiral Drugs; 220 Handan road Shanghai 200433 People's Republic of China
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45
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Andna L, Miesch L. Trapping of N-Acyliminium Ions with Enamides: An Approach to Medium-Sized Diaza-Heterocycles. Org Lett 2018; 20:3430-3433. [PMID: 29790768 DOI: 10.1021/acs.orglett.8b01407] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Enamides equipped with N-acyliminium ion precursors were obtained through reduction of ynamides tethered to N-imides. Intramolecular TMSOTf-mediated trapping of N-acyliminium ions provided a variety of polyfunctionalized medium-sized diaza-heterocycles of putative pharmacological interest.
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Affiliation(s)
- Lucile Andna
- Laboratoire de Chimie Organique Synthétique , Institut de Chimie, CNRS-UdS, UMR 7177 , 4, rue Blaise Pascal, CS 90032 , 67081 Strasbourg , France
| | - Laurence Miesch
- Laboratoire de Chimie Organique Synthétique , Institut de Chimie, CNRS-UdS, UMR 7177 , 4, rue Blaise Pascal, CS 90032 , 67081 Strasbourg , France
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46
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Affiliation(s)
- Bagrat A. Shainyan
- A. E. Favorsky Irkutsk Institute of Chemistry; Siberian Division of Russian Academy of Science; 1 Favorsky Street 664033, Russia Irkutsk
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47
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Plamont R, Graux LV, Clavier H. Highly Selective Syn
Addition of 1,3-Diones to Internal Ynamides Catalyzed by Zinc Iodide. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701690] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Rémi Plamont
- Centrale Marseille, iSm2; Aix Marseille Univ., CNRS; Marseille France
| | - Lionel V. Graux
- Centrale Marseille, iSm2; Aix Marseille Univ., CNRS; Marseille France
| | - Hervé Clavier
- Centrale Marseille, iSm2; Aix Marseille Univ., CNRS; Marseille France
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48
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Base-catalyzed cascade 1,6-sulfur-Michael/Henry reaction of trifluoromethyl-substituted styrylisoxazoles: Diastereoselective synthesis of tetrahydrothiophenes with a trifluoromethylated quaternary center. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.01.090] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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49
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Noda H, Kumagai N, Shibasaki M. Catalytic Asymmetric Synthesis of α‐Trifluoromethylated Carbinols: A Case Study of Tertiary Propargylic Alcohols. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800013] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Hidetoshi Noda
- Institute of Microbial Chemistry (BIKAKEN), Tokyo 3-14-23 Kamiosaki Shinagawa-ku Tokyo 141-0021 Japan
| | - Naoya Kumagai
- Institute of Microbial Chemistry (BIKAKEN), Tokyo 3-14-23 Kamiosaki Shinagawa-ku Tokyo 141-0021 Japan
| | - Masakatsu Shibasaki
- Institute of Microbial Chemistry (BIKAKEN), Tokyo 3-14-23 Kamiosaki Shinagawa-ku Tokyo 141-0021 Japan
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50
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Saito N, Abdullah I, Hayashi K, Hamada K, Koyama M, Sato Y. Enantioselective synthesis of β-amino acid derivatives via nickel-promoted regioselective carboxylation of ynamides and rhodium-catalyzed asymmetric hydrogenation. Org Biomol Chem 2018; 14:10080-10089. [PMID: 27722728 DOI: 10.1039/c6ob01234e] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
We succeeded in the development of a new method for enantioselective synthesis of α-substituted-β-amino acid derivatives. Thus, nickel(0)-promoted carboxylation of ynamide gave the α-substituted-β-aminoacrylate derivative in a highly regioselective manner. Then, rhodium-catalyzed asymmetric hydrogenation of the α-substituted β-aminoacrylate produced the corresponding α-substituted β-amino acid derivative as an optically active form.
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Affiliation(s)
- Nozomi Saito
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan.
| | - Iman Abdullah
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan.
| | - Kayoko Hayashi
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan.
| | - Katsuyuki Hamada
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan.
| | - Momoko Koyama
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan.
| | - Yoshihiro Sato
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan.
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