101
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Shimizu Y, Kanai M. Recent progress in copper-catalyzed difunctionalization of unactivated carboncarbon multiple bonds. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.05.077] [Citation(s) in RCA: 181] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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102
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Casavant BJ, Hosseini AS, Chemler SR. 6-Azabicyclo[3.2.1]octanes Via Copper-Catalyzed Enantioselective Alkene Carboamination. Adv Synth Catal 2014; 356:2697-2702. [PMID: 25484848 DOI: 10.1002/adsc.201400317] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Bridged bicyclic rings containing nitrogen heterocycles are important motifs in bioactive small organic molecules. An enantioselective copper-catalyzed alkene carboamination reaction that creates bridged heterocycles is reported herein. Two new rings are formed in this alkene carboamination reaction where N-sulfonyl-2-aryl-4-pentenamines are converted to 6-azabicyclo[3.2.1]octanes using [Ph-Box-Cu](OTf)2 or related catalysts in the presence of MnO2 as stoichiometric oxidant in moderate to good yields and generally excellent enantioselectivities. Two new stereocenters are formed in the reaction, and the C-C bond-forming arene addition is a net C-H functionalization.
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Affiliation(s)
- Barbara J Casavant
- Department of Chemistry, The State University of New York at Buffalo, Buffalo, New York 14260, United States. ; phone: (+1)-715-645-4225
| | - Azade S Hosseini
- Department of Chemistry, The State University of New York at Buffalo, Buffalo, New York 14260, United States. ; phone: (+1)-715-645-4225
| | - Sherry R Chemler
- Department of Chemistry, The State University of New York at Buffalo, Buffalo, New York 14260, United States. ; phone: (+1)-715-645-4225
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103
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Bovino MT, Liwosz TW, Kendel NE, Miller Y, Tyminska N, Zurek E, Chemler SR. Enantioselective copper-catalyzed carboetherification of unactivated alkenes. Angew Chem Int Ed Engl 2014; 53:6383-7. [PMID: 24798697 DOI: 10.1002/anie.201402462] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2014] [Revised: 03/25/2014] [Indexed: 11/06/2022]
Abstract
Chiral saturated oxygen heterocycles are important components of bioactive compounds. Cyclization of alcohols onto pendant alkenes is a direct route to their synthesis, but few catalytic enantioselective methods enabling cyclization onto unactivated alkenes exist. Herein reported is a highly efficient copper-catalyzed cyclization of γ-unsaturated pentenols which terminates in C-C bond formation, a net alkene carboetherification. Both intra- and intermolecular C-C bond formations are demonstrated, thus yielding functionalized chiral tetrahydrofurans as well as fused-ring and bridged-ring oxabicyclic products. Transition-state calculations support a cis-oxycupration stereochemistry-determining step.
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Affiliation(s)
- Michael T Bovino
- Department of Chemistry, The State University of New York at Buffalo, Buffalo, NY 14260 (USA)
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104
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Bovino MT, Liwosz TW, Kendel NE, Miller Y, Tyminska N, Zurek E, Chemler SR. Enantioselective Copper‐Catalyzed Carboetherification of Unactivated Alkenes. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201402462] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Michael T. Bovino
- Department of Chemistry, The State University of New York at Buffalo, Buffalo, NY 14260 (USA)
| | - Timothy W. Liwosz
- Department of Chemistry, The State University of New York at Buffalo, Buffalo, NY 14260 (USA)
| | - Nicole E. Kendel
- Department of Chemistry, The State University of New York at Buffalo, Buffalo, NY 14260 (USA)
| | - Yan Miller
- Department of Chemistry, The State University of New York at Buffalo, Buffalo, NY 14260 (USA)
| | - Nina Tyminska
- Department of Chemistry, The State University of New York at Buffalo, Buffalo, NY 14260 (USA)
| | - Eva Zurek
- Department of Chemistry, The State University of New York at Buffalo, Buffalo, NY 14260 (USA)
| | - Sherry R. Chemler
- Department of Chemistry, The State University of New York at Buffalo, Buffalo, NY 14260 (USA)
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105
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Turnpenny BW, Chemler SR. Copper-Catalyzed Alkene Diamination: Synthesis of Chiral 2-Aminomethyl Indolines and Pyrrolidines. Chem Sci 2014; 5:1786-1793. [PMID: 24932404 PMCID: PMC4051238 DOI: 10.1039/c4sc00237g] [Citation(s) in RCA: 94] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Chiral vicinal diamines, including 2-aminomethyl indolines and pyrrolidines, are useful as ligands for catalytic asymmetric reactions and are also found as important components of bioactive compounds. Herein is reported the first copper-catalyzed alkene diamination that occurs with high enantioselectivity. The substrate range is the broadest yet reported for this kind of intra-/intermolecular reaction sequence both with respect to γ-alkenyl sulfonamide substrate and external amine nucleophile. The resulting products expand the availability of substituted 2-aminomethyl indolines and pyrrolidines, privileged compounds in asymmetric catalysis and medicinal chemistry. A unique solution to a challenging oxidation problem related to copper catalyst turnover is also presented.
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Affiliation(s)
- Benjamin W. Turnpenny
- Department of Chemistry, Natural Science Complex, The State University of New York at Buffalo, Buffalo, NY 14260, USA
| | - Sherry R. Chemler
- Department of Chemistry, Natural Science Complex, The State University of New York at Buffalo, Buffalo, NY 14260, USA
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106
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Itoh T, Shimizu Y, Kanai M. Copper-catalyzed regio- and stereoselective intermolecular three-component oxyarylation of allenes. Org Lett 2014; 16:2736-9. [PMID: 24766635 DOI: 10.1021/ol501022d] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A copper(II)-catalyzed intermolecular three-component oxyarylation of allenes using arylboronic acids as a carbon source and TEMPO as an oxygen source is described. The reaction proceeded under mild conditions with high regio- and stereoselectivity and functional group tolerance. A plausible reaction mechanism is proposed, involving carbocupration of allenes, homolysis of the intervening allylcopper(II), and a radical TEMPO trap.
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Affiliation(s)
- Taisuke Itoh
- Graduate School of Pharmaceutical Sciences, The University of Tokyo , 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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107
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Fujino D, Yorimitsu H, Osuka A. Regiocontrolled Palladium-Catalyzed Arylative Cyclizations of Alkynols. J Am Chem Soc 2014; 136:6255-8. [DOI: 10.1021/ja5029028] [Citation(s) in RCA: 81] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Daishi Fujino
- Department
of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Hideki Yorimitsu
- Department
of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
- ACT-C, JST, Sakyo-ku, Kyoto 606-8502, Japan
| | - Atsuhiro Osuka
- Department
of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
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108
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Urabe F, Miyamoto S, Takahashi K, Ishihara J, Hatakeyama S. Formal [4 + 1]-Cycloaddition of Homopropargyl Alcohols to Diazo Dicarbonyl Compounds Giving Substituted Tetrahydrofurans. Org Lett 2014; 16:1004-7. [DOI: 10.1021/ol403746r] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Fumiya Urabe
- Graduate School of Biomedical
Sciences, Nagasaki University, Nagasaki 852-8521, Japan
| | - Shohei Miyamoto
- Graduate School of Biomedical
Sciences, Nagasaki University, Nagasaki 852-8521, Japan
| | - Keisuke Takahashi
- Graduate School of Biomedical
Sciences, Nagasaki University, Nagasaki 852-8521, Japan
| | - Jun Ishihara
- Graduate School of Biomedical
Sciences, Nagasaki University, Nagasaki 852-8521, Japan
| | - Susumi Hatakeyama
- Graduate School of Biomedical
Sciences, Nagasaki University, Nagasaki 852-8521, Japan
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109
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Zhu R, Buchwald SL. Enantioselective functionalization of radical intermediates in redox catalysis: copper-catalyzed asymmetric oxytrifluoromethylation of alkenes. Angew Chem Int Ed Engl 2013; 52:12655-8. [PMID: 24133010 PMCID: PMC3880552 DOI: 10.1002/anie.201307790] [Citation(s) in RCA: 234] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2013] [Indexed: 11/11/2022]
Abstract
A method for the efficient enantioselective oxytrifluoromethylation of alkenes has been developed using a copper catalyst system. Mechanistic studies are consistent with a metal-catalyzed redox radical addition mechanism, in which a C–O bond is formed via the copper-mediated enantioselective trapping of a prochiral alkyl radical intermediate derived from the initial trifluoromethyl radical addition.
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Affiliation(s)
- Rong Zhu
- Department of Chemistry, Room 18-490, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
| | - Stephen L. Buchwald
- Department of Chemistry, Room 18-490, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
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110
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Belding L, Chemler SR, Dudding T. A computational study of the copper(II)-catalyzed enantioselective intramolecular aminooxygenation of alkenes. J Org Chem 2013; 78:10288-97. [PMID: 24032369 DOI: 10.1021/jo401665n] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
The origin of the enantioselectivity in the [Cu(R,R)-Ph-box](OTf)2-catalyzed intramolecular aminooxygenation of N-sulfonyl-2-allylanilines and 4-pentenylsulfonamides to afford chiral indolines and pyrrolidines, respectively, was investigated using density functional theory (DFT) calculations. The pyrrolidine-forming transition-state model for the major enantiomer involves a chairlike seven-membered cyclization transition state with a distorted square-planar copper center, while the transition-state model for the minor enantiomer was found to have a boatlike cyclization geometry having a distorted tetrahedral geometry about the copper center. Similar copper-geometry trends were observed in the chiral indoline-forming reactions. These models were found to be qualitatively consistent with experimental results and allow for rationalization of how substitution on the substrate backbone and N-sulfonyl substituent affect the level of enantioselectivity in these and related copper(II)-catalyzed enantioselective reactions.
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Affiliation(s)
- Lee Belding
- Department of Chemistry, Brock University , St. Catharines, Ontario, Canada L2S 3A1
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111
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Zhu R, Buchwald SL. Enantioselective Functionalization of Radical Intermediates in Redox Catalysis: Copper-Catalyzed Asymmetric Oxytrifluoromethylation of Alkenes. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201307790] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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112
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Liwosz TW, Chemler SR. Copper-catalyzed oxidative amination and allylic amination of alkenes. Chemistry 2013; 19:12771-7. [PMID: 23878099 PMCID: PMC4038966 DOI: 10.1002/chem.201301800] [Citation(s) in RCA: 118] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2013] [Indexed: 11/09/2022]
Abstract
Enamines and enamides are useful synthetic intermediates and common components of bioactive compounds. A new protocol for their direct synthesis by a net alkene C-H amination and allylic amination by using catalytic Cu(II) in the presence of MnO2 is reported. Reactions between N-aryl sulfonamides and vinyl arenes furnish enamides, allylic amines, indoles, benzothiazine dioxides, and dibenzazepines directly and efficiently. Control experiments further showed that MnO2 alone can promote the reaction in the absence of a copper salt, albeit with lower efficiency. Mechanistic probes support the involvement of nitrogen-radical intermediates. This method is ideal for the synthesis of enamides from 1,1-disubstituted vinyl arenes, which are uncommon substrates in existing oxidative amination protocols.
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Affiliation(s)
| | - Sherry R. Chemler
- Department of Chemistry, The State University of New York at Buffalo, Buffalo, NY 14260 (USA)
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113
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Cahard E, Bremeyer N, Gaunt MJ. Copper‐Catalyzed Intramolecular Electrophilic Carbofunctionalization of Allylic Amides. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201303724] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Elise Cahard
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW (UK) http://www‐gaunt.ch.cam.ac.uk/
| | - Nadine Bremeyer
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW (UK) http://www‐gaunt.ch.cam.ac.uk/
| | - Matthew J. Gaunt
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW (UK) http://www‐gaunt.ch.cam.ac.uk/
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114
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Cahard E, Bremeyer N, Gaunt MJ. Copper-Catalyzed Intramolecular Electrophilic Carbofunctionalization of Allylic Amides. Angew Chem Int Ed Engl 2013; 52:9284-8. [DOI: 10.1002/anie.201303724] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2013] [Indexed: 02/04/2023]
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115
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Corbett MT, Johnson JS. Enantioselective synthesis of hindered cyclic dialkyl ethers via catalytic oxa-Michael/Michael desymmetrization. Chem Sci 2013; 4:2828-2832. [PMID: 24683449 PMCID: PMC3964814 DOI: 10.1039/c3sc51022k] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An asymmetric oxa-Michael/Michael cascade reaction of p-quinols and α,β-unsaturated aldehydes provides access to hindered dialkyl ethers. A highly enantioselective oxa-Michael addition of a tertiary alcohol precedes an intramolecular cyclohexadienone desymmetrization, which allows for the concomitant formation of four contiguous stereocenters in a single step. The highly functionalized bicyclic frameworks are rapidly obtained from simple starting materials with good diastereoselection and serve as valuable precursors for further manipulation.
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Affiliation(s)
- Michael T. Corbett
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3290, USA
| | - Jeffrey S. Johnson
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3290, USA
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116
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Mao X, Ma X, Zhang S, Hu H, Zhu C, Cheng Y. Silver-Catalyzed Highly Regioselective Phosphonation of Arenes Bearing Electron-Withdrawing Groups. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300545] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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117
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Sahoo B, Hopkinson MN, Glorius F. Combining Gold and Photoredox Catalysis: Visible Light-Mediated Oxy- and Aminoarylation of Alkenes. J Am Chem Soc 2013; 135:5505-8. [DOI: 10.1021/ja400311h] [Citation(s) in RCA: 405] [Impact Index Per Article: 36.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Basudev Sahoo
- NRW Graduate
School of Chemistry, Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse
40, 48149 Münster, Germany
| | - Matthew N. Hopkinson
- NRW Graduate
School of Chemistry, Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse
40, 48149 Münster, Germany
| | - Frank Glorius
- NRW Graduate
School of Chemistry, Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse
40, 48149 Münster, Germany
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118
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Cox N, Uehling MR, Haelsig KT, Lalic G. Catalytic Asymmetric Synthesis of Cyclic Ethers Containing an α-Tetrasubstituted Stereocenter. Angew Chem Int Ed Engl 2013; 52:4878-82. [DOI: 10.1002/anie.201300174] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2013] [Indexed: 11/12/2022]
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119
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Cox N, Uehling MR, Haelsig KT, Lalic G. Catalytic Asymmetric Synthesis of Cyclic Ethers Containing an α-Tetrasubstituted Stereocenter. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201300174] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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120
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Zheng M, Huang L, Wu W, Jiang H. Pd(II)-Catalyzed Sequential C–C/C–O Bond Formations: A New Strategy to Construct Trisubstituted Furans. Org Lett 2013; 15:1838-41. [DOI: 10.1021/ol400451t] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Meifang Zheng
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P.R. China
| | - Liangbin Huang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P.R. China
| | - Wanqing Wu
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P.R. China
| | - Huanfeng Jiang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P.R. China
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121
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Synthesis of Saturated Heterocycles via Metal-Catalyzed Alkene Diamination, Aminoalkoxylation, or Dialkoxylation Reactions. TOPICS IN HETEROCYCLIC CHEMISTRY 2013. [DOI: 10.1007/7081_2013_104] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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122
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Quinn RK, Schmidt VA, Alexanian EJ. Radical carbooxygenations of alkenes using hydroxamic acids. Chem Sci 2013. [DOI: 10.1039/c3sc51466h] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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123
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Yeung KS, Peng XS, Wu J, Fan R, Hou XL. Five-Membered Ring Systems. PROGRESS IN HETEROCYCLIC CHEMISTRY 2013. [DOI: 10.1016/b978-0-08-099406-2.00008-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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124
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Synthesis of Saturated Heterocycles via Metal-Catalyzed Alkene Carboamination or Carboalkoxylation Reactions. TOPICS IN HETEROCYCLIC CHEMISTRY 2013. [DOI: 10.1007/7081_2012_98] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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125
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Mondal S, Bertrand MP, Nechab M. Enantioselektive Synthese von carbocyclischen und heterocyclischen Verbindungen durch radikalische/polare und polare/radikalische Reaktionskaskaden. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201207518] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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126
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Mondal S, Bertrand MP, Nechab M. Enantioselective Synthesis of Carbocycles and Heterocycles by Radical/Polar and Polar/Radical Cascades. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/anie.201207518] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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127
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Turnpenny BW, Hyman KL, Chemler SR. Chiral Indoline Synthesis Via Enantioselective Intramolecular Copper-Catalyzed Alkene Hydroamination. Organometallics 2012; 31:7819-7822. [PMID: 23243332 PMCID: PMC3519432 DOI: 10.1021/om300744m] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
An enantioselective copper-catalyzed hydroamination / cyclization of N-sulfonyl-2-allylanilines for the synthesis of chiral 2-methylindolines is reported. Chiral 2-methylindolines are important subunits in drugs and bioactive compounds. This method provides chiral N-sulfonyl-2-methyl indolines in up to 90% ee.
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Affiliation(s)
| | | | - Sherry R. Chemler
- Department of Chemistry, State University of New York at Buffalo, Buffalo, New York 14260
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128
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Zhao J, Zhang Q, Liu L, He Y, Li J, Li J, Zhu Q. CuI-Mediated Sequential Iodination/Cycloetherification of o-Arylphenols: Synthesis of 2- or 4-Iododibenzofurans and Mechanistic Studies. Org Lett 2012; 14:5362-5. [PMID: 23025569 DOI: 10.1021/ol302562a] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Jiaji Zhao
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou 510530, P. R. China, and Department of Chemistry, Jinan University, Huangpu Road West 601, Guangzhou 510632, P. R. China
| | - Qi Zhang
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou 510530, P. R. China, and Department of Chemistry, Jinan University, Huangpu Road West 601, Guangzhou 510632, P. R. China
| | - Lanying Liu
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou 510530, P. R. China, and Department of Chemistry, Jinan University, Huangpu Road West 601, Guangzhou 510632, P. R. China
| | - Yimiao He
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou 510530, P. R. China, and Department of Chemistry, Jinan University, Huangpu Road West 601, Guangzhou 510632, P. R. China
| | - Jing Li
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou 510530, P. R. China, and Department of Chemistry, Jinan University, Huangpu Road West 601, Guangzhou 510632, P. R. China
| | - Juan Li
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou 510530, P. R. China, and Department of Chemistry, Jinan University, Huangpu Road West 601, Guangzhou 510632, P. R. China
| | - Qiang Zhu
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou 510530, P. R. China, and Department of Chemistry, Jinan University, Huangpu Road West 601, Guangzhou 510632, P. R. China
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129
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Hartmann M, Li Y, Studer A. Transition-Metal-Free Oxyarylation of Alkenes with Aryl Diazonium Salts and TEMPONa. J Am Chem Soc 2012; 134:16516-9. [DOI: 10.1021/ja307638u] [Citation(s) in RCA: 157] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Marcel Hartmann
- Institute of Organic Chemistry, University of Münster, Corrensstrasse 40, 48149 Münster,
Germany
| | - Yi Li
- Institute of Organic Chemistry, University of Münster, Corrensstrasse 40, 48149 Münster,
Germany
| | - Armido Studer
- Institute of Organic Chemistry, University of Münster, Corrensstrasse 40, 48149 Münster,
Germany
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130
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Sequeira FC, Chemler SR. Stereoselective synthesis of morpholines via copper-promoted oxyamination of alkenes. Org Lett 2012; 14:4482-5. [PMID: 22894680 PMCID: PMC3465956 DOI: 10.1021/ol301984b] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A new copper(II) 2-ethylhexanoate-promoted addition of an alcohol and an amine across an alkene (oxyamination) is reported. The alcohol addition is intramolecular, while coupling with the amine occurs intermolecularly. Several 2-aminomethyl morpholines were synthesized in good to excellent yields and diastereoselectivities.
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Affiliation(s)
- Fatima C. Sequeira
- Department of Chemistry, The State University of New York at Buffalo, Buffalo, New York 14260
| | - Sherry R. Chemler
- Department of Chemistry, The State University of New York at Buffalo, Buffalo, New York 14260
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Abstract
A mild, versatile, and convenient method for the efficient oxytrifluoromethylation of unactivated alkenes based on a copper-catalyzed oxidative difunctionalization strategy has been developed. This methodology provides access to a variety of classes of synthetically useful CF(3)-containing building blocks from simple starting materials.
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Affiliation(s)
- Rong Zhu
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Stephen L. Buchwald
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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Tu Y, Zhou L, Yin R, Lv X, Flowers II RA, Choquette KA, Liu H, Niu Q, Wang X. Study on the coupling of acyclic esters with alkenes – the synthesis of 2-(2-hydroxyalkyl)cyclopropanols via cascade cyclization using allylsamarium bromide. Chem Commun (Camb) 2012; 48:11026-8. [DOI: 10.1039/c2cc34630c] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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