1
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Miller JL, Damodaran K, Floreancig PE. Nitrogen Heterocycle Synthesis through Hydride Abstraction of Acyclic Carbamates and Related Species: Scope, Mechanism, Stereoselectivity, and Product Conformation Studies. Chemistry 2023; 29:e202302977. [PMID: 37796745 DOI: 10.1002/chem.202302977] [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: 09/13/2023] [Revised: 10/04/2023] [Accepted: 10/05/2023] [Indexed: 10/07/2023]
Abstract
Acyliminium ions and related species are potent electrophiles that can be quite valuable in the synthesis of nitrogen-containing molecules. This manuscript describes a protocol to form these intermediates through hydride abstractions of easily accessible allylic carbamates, amides, and sulfonamides that avoids the reversibility that is possible in classical condensation-based routes. These intermediates are used in the preparation of a range of nitrogen-containing heterocycles, and in many cases high levels of stereocontrol are observed. Specifically areas of investigation include the impact of chemical structure on oxidation efficiency, the geometry of the intermediate iminium ions, the impact of a substrate stereocenter on stereocontrol, and an examination of transition state geometry.
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Affiliation(s)
- Jenna L Miller
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania, 15260, USA
| | - Krishnan Damodaran
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania, 15260, USA
| | - Paul E Floreancig
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania, 15260, USA
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2
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Li Z, Ma C, Zhao L, Lin Z, Hu Y, Zhao J, Yu X. High atomic utilization conversion of ethers into furancarbaldehydes via an ether oxidation iminium-ion activation cascade strategy. Org Biomol Chem 2023; 21:8094-8097. [PMID: 37789756 DOI: 10.1039/d3ob01120h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
A novel organocatalytic one-pot cascade ether oxidation iminium-ion activation strategy for the synthesis of naphtho[2,1-b]furan-1-carbaldehyde and benzofuran-3-carbaldehyde from high atomic utilization transformation of aryl allyl ethers has been developed. Its synthetic application will provide a new ether oxidation iminium-ion activation cascade tool for the efficient synthesis of complex molecules.
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Affiliation(s)
- Zheyao Li
- Engineering Research Center of Pharmaceutical Process Chemistry, Ministry of Education, Shanghai Key Laboratory of New Drug Design, School of Pharmacy, and State Key Laboratory of Bioengineering Reactors, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
| | - Chunmei Ma
- Engineering Research Center of Pharmaceutical Process Chemistry, Ministry of Education, Shanghai Key Laboratory of New Drug Design, School of Pharmacy, and State Key Laboratory of Bioengineering Reactors, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
| | - Lin Zhao
- Engineering Research Center of Pharmaceutical Process Chemistry, Ministry of Education, Shanghai Key Laboratory of New Drug Design, School of Pharmacy, and State Key Laboratory of Bioengineering Reactors, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
| | - Zhongren Lin
- Engineering Research Center of Pharmaceutical Process Chemistry, Ministry of Education, Shanghai Key Laboratory of New Drug Design, School of Pharmacy, and State Key Laboratory of Bioengineering Reactors, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
| | - Yang Hu
- Engineering Research Center of Pharmaceutical Process Chemistry, Ministry of Education, Shanghai Key Laboratory of New Drug Design, School of Pharmacy, and State Key Laboratory of Bioengineering Reactors, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
| | - Jianhong Zhao
- Engineering Research Center of Pharmaceutical Process Chemistry, Ministry of Education, Shanghai Key Laboratory of New Drug Design, School of Pharmacy, and State Key Laboratory of Bioengineering Reactors, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
| | - Xinhong Yu
- Engineering Research Center of Pharmaceutical Process Chemistry, Ministry of Education, Shanghai Key Laboratory of New Drug Design, School of Pharmacy, and State Key Laboratory of Bioengineering Reactors, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
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3
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Roy S, Panja S, Sahoo SR, Chatterjee S, Maiti D. Enroute sustainability: metal free C-H bond functionalisation. Chem Soc Rev 2023; 52:2391-2479. [PMID: 36924227 DOI: 10.1039/d0cs01466d] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Abstract
The term "C-H functionalisation" incorporates C-H activation followed by its transformation. In a single line, this can be defined as the conversion of carbon-hydrogen bonds into carbon-carbon or carbon-heteroatom bonds. The catalytic functionalisation of C-H bonds using transition metals has emerged as an atom-economical technique to engender new bonds without activated precursors which can be considered as a major drawback while attempting large-scale synthesis. Replacing the transition-metal-catalysed approach with a metal-free strategy significantly offers an alternative route that is not only inexpensive but also environmentally benign to functionalize C-H bonds. Recently metal free synthetic approaches have been flourishing to functionalize C-H bonds, motivated by the search for greener, cost-effective, and non-toxic catalysts. In this review, we will highlight the comprehensive and up-to-date discussion on recent examples of ground-breaking research on green and sustainable metal-free C-H bond functionalisation.
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Affiliation(s)
- Sayan Roy
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
| | - Subir Panja
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
| | - Sumeet Ranjan Sahoo
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
| | - Sagnik Chatterjee
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
| | - Debabrata Maiti
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India. .,Department of Interdisciplinary Program in Climate Studies, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
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4
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Reddi RN, Sudalai A, Jo C. Studies toward the total synthesis of (+)‐neopeltolide using
N
‐heterocyclic carbene‐catalyzed oxo‐acyloxylation/reductive oxa‐Michael addition strategy. B KOREAN CHEM SOC 2022. [DOI: 10.1002/bkcs.12604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Rambabu N. Reddi
- Chemical Engineering and Process Development Division CSIR‐National Chemical Laboratory Pune Maharashtra India
| | - Arumugam Sudalai
- Chemical Engineering and Process Development Division CSIR‐National Chemical Laboratory Pune Maharashtra India
| | - Changbum Jo
- Department of Chemistry and Chemical Engineering Inha University Michuhol‐gu, Incheon Republic of Korea
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5
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Joshi DR, Kim I. Regioselective Synthesis of 1‐Cyano‐3‐arylindolizines: Construction of Pyrrole via DDQ‐Mediated Ring Closure of Cyclopropyl Pyridines. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Ikyon Kim
- Yonsei University KOREA (THE REPUBLIC OF)
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6
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Miller JL, Lawrence JMIA, Rodriguez Del Rey FO, Floreancig PE. Synthetic applications of hydride abstraction reactions by organic oxidants. Chem Soc Rev 2022; 51:5660-5690. [PMID: 35712818 DOI: 10.1039/d1cs01169c] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Carbon-hydrogen bond functionalizations provide an attractive method for streamlining organic synthesis, and many strategies have been developed for conducting these transformations. Hydride-abstracting reactions have emerged as extremely effective methods for oxidative bond-forming processes due to their mild reaction conditions and high chemoselectivity. This review will predominantly focus on the mechanism, reaction development, natural product synthesis applications, approaches to catalysis, and use in enantioselective processes for hydride abstractions by quinone, oxoammonium ion, and carbocation oxidants. These are the most commonly employed hydride-abstracting agents, but recent efforts illustrate the potential for weaker ketone and triaryl borane oxidants, which will be covered at the end of the review.
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Affiliation(s)
- Jenna L Miller
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania, 15260, USA.
| | - Jean-Marc I A Lawrence
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania, 15260, USA.
| | | | - Paul E Floreancig
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania, 15260, USA.
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7
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Lawrence JMIA, Floreancig PE. Kinetics-Based Approach to Developing Electrocatalytic Variants of Slow Oxidations: Application to Hydride Abstraction-Initiated Cyclization Reactions. Chemistry 2022; 28:e202200335. [PMID: 35254690 DOI: 10.1002/chem.202200335] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Indexed: 01/28/2023]
Abstract
Electrochemical oxidant regeneration is challenging in reactions that have a slow redox step because the steady-state concentration of the reduced oxidant is low, causing difficulties in maintaining sufficient current or preventing potential spikes. This work shows that applying an understanding of the relationship between intermediate cation stability, oxidant strength, overpotential, and concentration on reaction kinetics delivers a method for electrochemical oxoammonium ion regeneration in hydride abstraction-initiated cyclization reactions, resulting in the development of an electrocatalytic variant of a process that has a high oxidation transition state free energy. This approach should be applicable to expanding the scope of electrocatalysis to include additional slow redox processes.
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Affiliation(s)
| | - Paul E Floreancig
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania, 15260, USA
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8
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Miller JL, Zhou L, Liu P, Floreancig PE. Mechanism-Based Approach to Reagent Selection for Oxidative Carbon-Hydrogen Bond Cleavage Reactions. Chemistry 2021; 28:e202103078. [PMID: 34822737 DOI: 10.1002/chem.202103078] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Indexed: 11/07/2022]
Abstract
Numerous hydride-abstracting agents generate the same cationic intermediate, but substrate features such as intermediate cation stability, oxidation potential, and steric environment can influence reaction rates in an oxidant-dependent manner. This manuscript provides experimental data to illustrate the role that structural features play in the kinetics of hydride abstraction reactions with commonly used quinone-, oxoammonium ion-, and carbocation- based oxidants. Computational studies of the transition state structures and energies explain these results and energy decomposition analysis calculations reveal unique sensitivities to electrostatic attraction and steric repulsions. Rigorous rate studies of select reactions validated the capacity of the calculations to predict reactivity trends. Additionally, kinetics studies demonstrate the potential for product inhibition in DDQ-mediated reactions. These studies provide a clear guide to select the optimal oxidant for structurally disparate substrates and lead to predictions of reactivity that were validated experimentally.
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Affiliation(s)
- Jenna L Miller
- Department of Chemistry, University of Pittsburgh Pittsburgh, Pennsylvania, 15260, United States
| | - Lin Zhou
- Department of Chemistry, University of Pittsburgh Pittsburgh, Pennsylvania, 15260, United States
| | - Peng Liu
- Department of Chemistry, University of Pittsburgh Pittsburgh, Pennsylvania, 15260, United States
| | - Paul E Floreancig
- Department of Chemistry, University of Pittsburgh Pittsburgh, Pennsylvania, 15260, United States
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9
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Ariyoshi S, Sakaguchi K, Nishimura T. Stereoselective Synthesis of Polysubstituted Tetrahydropyranones via Acid-Promoted Cyclization of β-Silyl-γ-ethylidene-γ-butyrolactones with Aldehydes and Ketones. J Org Chem 2021; 86:11884-11894. [PMID: 34387502 DOI: 10.1021/acs.joc.1c01284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
β-Silyl-γ-ethylidene-γ-butyrolactone upon one-pot treatment with aldehydes and ketones in the presence of Lewis acids underwent a tandem Hosomi-Sakurai/Prins cyclization to give polysubstituted tetrahydropyranones stereoselectively. Various aldehydes and ketones can be used in this reaction to produce the corresponding tetrahydropyranones. The optical purity of the starting γ-butyrolactone was substantially retained in the resulting tetrahydropyranones.
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Affiliation(s)
- Shoma Ariyoshi
- Division of Molecular Materials Science, Graduate School of Science, Osaka City University, Sugimoto, Osaka 558-8585, Sumiyoshi, Japan
| | - Kazuhiko Sakaguchi
- Division of Molecular Materials Science, Graduate School of Science, Osaka City University, Sugimoto, Osaka 558-8585, Sumiyoshi, Japan
| | - Takahiro Nishimura
- Division of Molecular Materials Science, Graduate School of Science, Osaka City University, Sugimoto, Osaka 558-8585, Sumiyoshi, Japan
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10
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Ying S, Huang X, Guo X, Yang S. The sequential C–H oxidation/asymmetric phosphonylation of primary alcohols to synthesize α-hydroxy phosphonates. GREEN SYNTHESIS AND CATALYSIS 2021. [DOI: 10.1016/j.gresc.2021.07.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
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11
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Medcalf Z, Moeller KD. Anodic Olefin Coupling Reactions: Elucidating Radical Cation Mechanisms and the Interplay between Cyclization and Second Oxidation Steps. CHEM REC 2021; 21:2442-2452. [PMID: 34117713 DOI: 10.1002/tcr.202100118] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 05/18/2021] [Indexed: 12/13/2022]
Abstract
Anodic olefin coupling reactions generate new bonds and ring skeletons through a net two electron process that reverses the polarity of a known, electron-rich functional group. While much of the early work on the mechanism of these reactions focused on the initial oxidation and cyclization steps of the process, the second oxidation step also plays a central role in determining the success of the reaction. Evidence supporting this observation is presented, along with evidence that optimization of this second oxidation step is not enough to pull a poor cyclization to the desired product. Successful cyclization reactions require optimization of both processes.
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Affiliation(s)
- Zach Medcalf
- Department of Chemistry, Washington University in Saint Louis, One Brookings Drive, 63130-4899, St Louis, MO, USA
| | - Kevin D Moeller
- Department of Chemistry, Washington University in Saint Louis, One Brookings Drive, 63130-4899, St Louis, MO, USA
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12
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Koike T, Kosai T, Iwamoto T. Intermolecular C-H Activation at the Allylic/Benzylic and Homoallylic/Homobenzylic Positions of Cyclic Hydrocarbons by a Stable Divalent Silicon Species. Chemistry 2021; 27:724-734. [PMID: 32931054 DOI: 10.1002/chem.202003541] [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: 07/29/2020] [Revised: 08/26/2020] [Indexed: 11/11/2022]
Abstract
Direct activation of inert C(sp3 )-H bonds by main group element species is yet a formidable challenge. Herein, the dehydrogenation of cyclohexene and 1,2,3,4-tetrahydronaphthalene through the allylic/benzylic and homoallylic/homobenzylic C-H bond activation by cyclic (alkyl)(amino)silylene 1 in neat conditions is reported to yield the corresponding aromatic compounds. As for the reaction of cyclohexene, allylsilane 3 and 7-silanorbornene 4 were also observed, which could be interpreted as a direct dehydrogenative silylation reaction of monoalkenes at the allylic positions. Experimental and computational studies suggest that the dehydrogenation of cyclohexene at the homoallylic position was accomplished by a combination of silylene 1 and radical intermediates such as hydrosilyl radical INT1 or cyclohexenyl radical H, which are generated in the initial step of the reaction.
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Affiliation(s)
- Taichi Koike
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai, 980-8578, Japan
| | - Tomoyuki Kosai
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai, 980-8578, Japan
| | - Takeaki Iwamoto
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai, 980-8578, Japan
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13
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Zhan R, Li D, Liu YL, Xie XY, Chen L, Shao LD, Wang WJ, Chen YG. Structural elucidation, bio-inspired synthesis, and biological activities of cyclic diarylpropanes from Horsfieldia kingii. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131494] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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14
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Baek J, Je EK, Kim J, Qi A, Ahn KH, Kim Y. Experimental and Theoretical Studies on the Mechanism of DDQ-Mediated Oxidative Cyclization of N-Aroylhydrazones. J Org Chem 2020; 85:9727-9736. [PMID: 32614179 DOI: 10.1021/acs.joc.0c00937] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The controversial single-electron-transfer process, frequently proposed in many 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ)-mediated reactions, was investigated experimentally and theoretically using the oxidative cyclization of aroylhydrazone with DDQ. DDQ-mediated oxadiazole formation involves several processes, including cyclization to form an oxadiazole ring and N-H bond cleavage, either by proton, hydride, or hydrogen atom transfer. The detailed mechanistic study using the M06-2X density functional theory, and the 6-31+G(d,p) basis set, suggests that the pathways involving radical ion pair (RIP) intermediates, which resulted from single-electron transfer (SET), were found to be energetically nearly identical to the pathway without the SET. The substituent-dependent reactivity of oxadiazole formation was consistent with the free energy profiles of both pathways, with or without the SET. This result indicates that in addition to the electron-transfer pathway, the nucleophilic addition/elimination pathway for DDQ should be considered as a possible mechanism of the oxidative transformation reaction using DDQ.
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Affiliation(s)
- Jihye Baek
- Department of Applied Chemistry and Institute of Natural Sciences, Kyung Hee University, Yongin-si 446-701, Korea
| | - Eun-Kyung Je
- Department of Applied Chemistry and Institute of Natural Sciences, Kyung Hee University, Yongin-si 446-701, Korea
| | - Jina Kim
- Department of Applied Chemistry and Institute of Natural Sciences, Kyung Hee University, Yongin-si 446-701, Korea
| | - Ai Qi
- Department of Applied Chemistry and Institute of Natural Sciences, Kyung Hee University, Yongin-si 446-701, Korea
| | - Kwang-Hyun Ahn
- Department of Applied Chemistry and Institute of Natural Sciences, Kyung Hee University, Yongin-si 446-701, Korea
| | - Yongho Kim
- Department of Applied Chemistry and Institute of Natural Sciences, Kyung Hee University, Yongin-si 446-701, Korea
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15
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Yao H, Zhou N, Zhang Z, Guan W, Wang H, Cheng H. Recent developments in syntheses of alotaketals and phorbaketals. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2019.151480] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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16
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Wang Z, Mao Y, Guan H, Cao M, Hua J, Feng L, Liu L. Direct oxidative C(sp3) H cyanation of secondary benzylic ethers. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2019.03.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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17
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Li, X, Zhou, C, Liu, X, Wang, T, Yu, X, Ma, H, Li, C. ipso-Oxidation of Allyl Ether/Decarboxylative Aromatization Cascade Strategy via Oxocarbenium Activation: A Novel Approach for Synthesis of N-Alkyl Pyrroles. CHINESE J ORG CHEM 2019. [DOI: 10.6023/cjoc201904036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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18
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Mao Y, Cao M, Pan X, Huang J, Li J, Xu L, Liu L. Bimolecular oxidative C–H alkynylation of α-substituted isochromans. Org Chem Front 2019. [DOI: 10.1039/c9qo00352e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The first bimolecular oxidative C–H functionalization of secondary benzylic ethers for tertiary ether synthesis has been established in high efficiency.
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Affiliation(s)
- Ying Mao
- School of Pharmaceutical Sciences
- Shandong University
- Jinan 250012
- P.R. China
| | - Min Cao
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
- P.R. China
| | - Xiaoguang Pan
- School of Pharmaceutical Sciences
- Shandong University
- Jinan 250012
- P.R. China
| | - Jiancheng Huang
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
- P.R. China
| | - Jing Li
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
- P.R. China
| | - Liren Xu
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
- P.R. China
| | - Lei Liu
- School of Pharmaceutical Sciences
- Shandong University
- Jinan 250012
- P.R. China
- School of Chemistry and Chemical Engineering
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19
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Džambaski Z, Bondžić BP. Dehydrogenative C(sp3)–H bond functionalization of tetrahydroisoquinolines mediated by organic oxidants under mild conditions. Org Biomol Chem 2019; 17:6420-6425. [DOI: 10.1039/c9ob01090d] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
DDQ and IBX are effective SET oxidants of N-aryl-protected and unprotected THIQs. Mannich and Strecker type functionalizations ensued in an overall CDC reaction.
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Affiliation(s)
- Zdravko Džambaski
- Center for Chemistry
- ICTM institute
- University of Belgrade
- 11 000 Belgrade
- Serbia
| | - Bojan P. Bondžić
- Center for Chemistry
- ICTM institute
- University of Belgrade
- 11 000 Belgrade
- Serbia
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20
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Affiliation(s)
- Scott M. Caplan
- Department of Chemistry University of Pittsburgh Pittsburgh PA 15260 USA
| | - Paul E. Floreancig
- Department of Chemistry University of Pittsburgh Pittsburgh PA 15260 USA
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21
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Caplan SM, Floreancig PE. Total Synthesis of Divergolides E and H. Angew Chem Int Ed Engl 2018; 57:15866-15870. [DOI: 10.1002/anie.201810336] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Scott M. Caplan
- Department of Chemistry University of Pittsburgh Pittsburgh PA 15260 USA
| | - Paul E. Floreancig
- Department of Chemistry University of Pittsburgh Pittsburgh PA 15260 USA
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22
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Lee A, Betori RC, Crane EA, Scheidt KA. An Enantioselective Cross-Dehydrogenative Coupling Catalysis Approach to Substituted Tetrahydropyrans. J Am Chem Soc 2018; 140:6212-6216. [PMID: 29714480 PMCID: PMC6052785 DOI: 10.1021/jacs.8b03063] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
An enantioselective cross-dehydrogenative coupling (CDC) reaction to access tetrahydropyrans has been developed. This process combines in situ Lewis acid activation of a nucleophile in concert with the oxidative formation of a transient oxocarbenium electrophile, leading to a productive and highly enantioselective CDC. These advances represent one of the first successful applications of CDC for the enantioselective couplings of unfunctionalized ethers. This system provides efficient access to valuable tetrahydropyran motifs found in many natural products and bioactive small molecules.
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Affiliation(s)
- Ansoo Lee
- Department of Chemistry, Center for Molecular Innovation and Drug Discovery, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Rick C. Betori
- Department of Chemistry, Center for Molecular Innovation and Drug Discovery, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Erika A. Crane
- Department of Chemistry, Center for Molecular Innovation and Drug Discovery, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Karl A. Scheidt
- Department of Chemistry, Center for Molecular Innovation and Drug Discovery, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
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23
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Moeller KD. Using Physical Organic Chemistry To Shape the Course of Electrochemical Reactions. Chem Rev 2018; 118:4817-4833. [DOI: 10.1021/acs.chemrev.7b00656] [Citation(s) in RCA: 373] [Impact Index Per Article: 62.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kevin D. Moeller
- Washington University in St. Louis, St. Louis, Missouri 63130, United States
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24
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Cheng D, Wu L, Deng Z, Xu X, Yan J. 2,3-Dichloro-5,6-dicyano-1,4-benzoquinone (DDQ)-Mediated C(sp
2
)-C(sp
3
) Cross-Dehydrogenative Coupling Reaction: α-Alkylation of Push-Pull Enamines and α-Oxo Ketene Dithioacetals. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700853] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Dongping Cheng
- College of Pharmaceutical Science; Zhejiang University of Technology; Hangzhou 310014 People's Republic of China
| | - Lijun Wu
- College of Pharmaceutical Science; Zhejiang University of Technology; Hangzhou 310014 People's Republic of China
| | - Zhiteng Deng
- College of Pharmaceutical Science; Zhejiang University of Technology; Hangzhou 310014 People's Republic of China
| | - Xiaoliang Xu
- College of Chemical Engineering; Zhejiang University of Technology; Hangzhou 310014 People's Republic of China
| | - Jizhong Yan
- College of Pharmaceutical Science; Zhejiang University of Technology; Hangzhou 310014 People's Republic of China
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25
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Morales-Rivera CA, Floreancig PE, Liu P. Predictive Model for Oxidative C–H Bond Functionalization Reactivity with 2,3-Dichloro-5,6-dicyano-1,4-benzoquinone. J Am Chem Soc 2017; 139:17935-17944. [DOI: 10.1021/jacs.7b08902] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
| | - Paul E. Floreancig
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Peng Liu
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
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26
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Challa C, Ravindran J, Konai MM, Varughese S, Jacob J, Kumar BSD, Haldar J, Lankalapalli RS. Expedient Synthesis of Indolo[2,3- b]quinolines, Chromeno[2,3- b]indoles, and 3-Alkenyl-oxindoles from 3,3'-Diindolylmethanes and Evaluation of Their Antibiotic Activity against Methicillin-Resistant Staphylococcus aureus. ACS OMEGA 2017; 2:5187-5195. [PMID: 30023741 PMCID: PMC6044809 DOI: 10.1021/acsomega.7b00840] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 08/16/2017] [Indexed: 05/09/2023]
Abstract
Easily accessible 3,3'-diindolylmethanes (DIMs) were utilized to generate a focused library of indolo[2,3-b]quinolines (2), chromeno[2,3-b]indoles (3), and 3-alkenyl-oxindoles (4) under 2,3-Dichloro-5,6-dicyano-1,4-benzoquinone (DDQ)-mediated oxidative conditions. DIMs with ortho-NHTosyl (NHTs) phenyl group afforded indolo[2,3-b]quinolines (2), whereas DIMs with ortho-hydroxy phenyl groups yielded chromeno[2,3-b]indoles (3) and 3-alkenyl-oxindoles (4). The mild conditions and excellent yields of the products make this method a good choice to access a diverse library of bioactive molecules from a common starting material. Two optimized compounds 2a and 2n displayed excellent activity against clinical isolates of methicillin-resistant Staphylococcus aureus (MRSA). Compound 2a showed the minimum inhibitory concentration values in the concentration between 1 and 4 μg/mL, whereas compound 2n revealed the values of 1-2 μg/mL. Furthermore, both the compounds were highly bactericidal and capable to kill the MRSA completely within 360 min. Collectively, the results suggested that both compounds 2a and 2n possess enormous potential to be developed as anti-MRSA agents.
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Affiliation(s)
- Chandrasekhar Challa
- Chemical
Sciences and Technology Division and Academy of Scientific
and Innovative Research (AcSIR) and Agro-Processing and Technology Division, CSIR-National Institute for Interdisciplinary Science
and Technology (CSIR-NIIST), Thiruvananthapuram 695019, Kerala, India
| | - Jaice Ravindran
- Chemical
Sciences and Technology Division and Academy of Scientific
and Innovative Research (AcSIR) and Agro-Processing and Technology Division, CSIR-National Institute for Interdisciplinary Science
and Technology (CSIR-NIIST), Thiruvananthapuram 695019, Kerala, India
| | - Mohini Mohan Konai
- Antimicrobial
Research Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru 560064, Karnataka, India
| | - Sunil Varughese
- Chemical
Sciences and Technology Division and Academy of Scientific
and Innovative Research (AcSIR) and Agro-Processing and Technology Division, CSIR-National Institute for Interdisciplinary Science
and Technology (CSIR-NIIST), Thiruvananthapuram 695019, Kerala, India
| | - Jubi Jacob
- Chemical
Sciences and Technology Division and Academy of Scientific
and Innovative Research (AcSIR) and Agro-Processing and Technology Division, CSIR-National Institute for Interdisciplinary Science
and Technology (CSIR-NIIST), Thiruvananthapuram 695019, Kerala, India
| | - B. S. Dileep Kumar
- Chemical
Sciences and Technology Division and Academy of Scientific
and Innovative Research (AcSIR) and Agro-Processing and Technology Division, CSIR-National Institute for Interdisciplinary Science
and Technology (CSIR-NIIST), Thiruvananthapuram 695019, Kerala, India
| | - Jayanta Haldar
- Antimicrobial
Research Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru 560064, Karnataka, India
| | - Ravi S. Lankalapalli
- Chemical
Sciences and Technology Division and Academy of Scientific
and Innovative Research (AcSIR) and Agro-Processing and Technology Division, CSIR-National Institute for Interdisciplinary Science
and Technology (CSIR-NIIST), Thiruvananthapuram 695019, Kerala, India
- E-mail:
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27
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Xia Q, Wang Q, Yan C, Dong J, Song H, Li L, Liu Y, Wang Q, Liu X, Song H. Merging Photoredox with Brønsted Acid Catalysis: The Cross-Dehydrogenative C−O Coupling for sp3
C−H Bond Peroxidation. Chemistry 2017; 23:10871-10877. [DOI: 10.1002/chem.201701755] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Qing Xia
- State Key Laboratory of Elemento-Organic Chemistry; Research Institute of Elemento-Organic Chemistry; Nankai University; Tianjin 300071 P. R. China
| | - Qiang Wang
- State Key Laboratory of Elemento-Organic Chemistry; Research Institute of Elemento-Organic Chemistry; Nankai University; Tianjin 300071 P. R. China
| | - Changcun Yan
- State Key Laboratory of Elemento-Organic Chemistry; Research Institute of Elemento-Organic Chemistry; Nankai University; Tianjin 300071 P. R. China
| | - Jianyang Dong
- State Key Laboratory of Elemento-Organic Chemistry; Research Institute of Elemento-Organic Chemistry; Nankai University; Tianjin 300071 P. R. China
| | - Hongjian Song
- State Key Laboratory of Elemento-Organic Chemistry; Research Institute of Elemento-Organic Chemistry; Nankai University; Tianjin 300071 P. R. China
| | - Ling Li
- State Key Laboratory of Elemento-Organic Chemistry; Research Institute of Elemento-Organic Chemistry; Nankai University; Tianjin 300071 P. R. China
| | - Yuxiu Liu
- State Key Laboratory of Elemento-Organic Chemistry; Research Institute of Elemento-Organic Chemistry; Nankai University; Tianjin 300071 P. R. China
| | - Qingmin Wang
- State Key Laboratory of Elemento-Organic Chemistry; Research Institute of Elemento-Organic Chemistry; Nankai University; Tianjin 300071 P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300071 P. R. China
| | - Xiangming Liu
- State Key Laboratory of Elemento-Organic Chemistry; Research Institute of Elemento-Organic Chemistry; Nankai University; Tianjin 300071 P. R. China
| | - Haibin Song
- State Key Laboratory of Elemento-Organic Chemistry; Research Institute of Elemento-Organic Chemistry; Nankai University; Tianjin 300071 P. R. China
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28
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Lee K, Lanier ML, Kwak JH, Kim H, Hong J. Advances in the synthesis of glycosidic macrolides: clavosolides A-D and cyanolide A. Nat Prod Rep 2017; 33:1393-1424. [PMID: 27714078 DOI: 10.1039/c6np00073h] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Covering: 2005 to 2016Clavosolides A-D and cyanolide A are glycosidic macrolides and represent a new family of marine natural products. They possess a number of unusual structural features and have attracted considerable interest from the synthetic community. This review presents a comprehensive survey of all aspects of the clavosolides A-D and cyanolide A. Specific topics include isolation, structure determination, biological activity, and synthetic approaches.
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Affiliation(s)
- Kiyoun Lee
- Department of Chemistry, The Catholic University of Korea, Bucheon 14662, Republic of Korea.
| | - Megan L Lanier
- Department of Chemistry, Duke University, Durham, North Carolina 27708, USA.
| | - Jae-Hwan Kwak
- College of Pharmacy, Kyungsung University, Busan 48434, Republic of Korea.
| | - Hyoungsu Kim
- College of Pharmacy and Institute of Pharmaceutical Science and Technology, Ajou University, Suwon 16499, Republic of Korea.
| | - Jiyong Hong
- Department of Chemistry, Duke University, Durham, North Carolina 27708, USA.
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29
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Fradette RJ, Kang M, West FG. Oxidation-Initiated Cyclizations of Pentadienyl Ethers: An Alternative Entry to the Nazarov Reaction. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201701748] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ryan J. Fradette
- Department of Chemistry; University of Alberta; E3-43 Gunning-Lemieux Chemistry Centre; Edmonton AB T6G 2G2 Canada
| | - Minkyu Kang
- Department of Chemistry; University of Alberta; E3-43 Gunning-Lemieux Chemistry Centre; Edmonton AB T6G 2G2 Canada
| | - F. G. West
- Department of Chemistry; University of Alberta; E3-43 Gunning-Lemieux Chemistry Centre; Edmonton AB T6G 2G2 Canada
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30
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Fradette RJ, Kang M, West FG. Oxidation-Initiated Cyclizations of Pentadienyl Ethers: An Alternative Entry to the Nazarov Reaction. Angew Chem Int Ed Engl 2017; 56:6335-6338. [DOI: 10.1002/anie.201701748] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Ryan J. Fradette
- Department of Chemistry; University of Alberta; E3-43 Gunning-Lemieux Chemistry Centre; Edmonton AB T6G 2G2 Canada
| | - Minkyu Kang
- Department of Chemistry; University of Alberta; E3-43 Gunning-Lemieux Chemistry Centre; Edmonton AB T6G 2G2 Canada
| | - F. G. West
- Department of Chemistry; University of Alberta; E3-43 Gunning-Lemieux Chemistry Centre; Edmonton AB T6G 2G2 Canada
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31
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Cheng D, Wu L, Lv H, Xu X, Yan J. CDC Reaction and Subsequent Cyclization for the Synthesis of 2-Hydroxy-3-alkyl-1,4-naphthoquinones and Pyranonaphthoquinones. J Org Chem 2017; 82:1610-1617. [DOI: 10.1021/acs.joc.6b02787] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Dongping Cheng
- College
of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Lijun Wu
- College
of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Huawei Lv
- College
of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Xiaoliang Xu
- College
of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Jizhong Yan
- College
of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, P. R. China
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32
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Patil SV, Patil SS, Bobade VD. A simple and efficient approach to the synthesis of 2-substituted benzimidazole via sp3 C–H functionalization. ARAB J CHEM 2016. [DOI: 10.1016/j.arabjc.2011.06.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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33
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Liu TX, Ma J, Chao D, Zhang P, Ma N, Liu Q, Shi L, Zhang Z, Zhang G. Synthesis of C60-Fused Tetrahydrocarbazole/Dibenzothiophene/Benzothiophene and Dibenzofuran Derivatives via Metal-Free Oxidative Dehydrogenative Carboannulation. Org Lett 2016; 18:4044-7. [DOI: 10.1021/acs.orglett.6b01902] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Tong-Xin Liu
- Collaborative
Innovation
Center of Henan Province for Green Manufacturing of Fine Chemicals,
Key Laboratory of Green Chemical Media and Reactions, Ministry of
Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P. R. China
| | - Jinliang Ma
- Collaborative
Innovation
Center of Henan Province for Green Manufacturing of Fine Chemicals,
Key Laboratory of Green Chemical Media and Reactions, Ministry of
Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P. R. China
| | - Di Chao
- Collaborative
Innovation
Center of Henan Province for Green Manufacturing of Fine Chemicals,
Key Laboratory of Green Chemical Media and Reactions, Ministry of
Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P. R. China
| | - Pengling Zhang
- Collaborative
Innovation
Center of Henan Province for Green Manufacturing of Fine Chemicals,
Key Laboratory of Green Chemical Media and Reactions, Ministry of
Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P. R. China
| | - Nana Ma
- Collaborative
Innovation
Center of Henan Province for Green Manufacturing of Fine Chemicals,
Key Laboratory of Green Chemical Media and Reactions, Ministry of
Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P. R. China
| | - Qingfeng Liu
- Collaborative
Innovation
Center of Henan Province for Green Manufacturing of Fine Chemicals,
Key Laboratory of Green Chemical Media and Reactions, Ministry of
Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P. R. China
| | - Lei Shi
- Collaborative
Innovation
Center of Henan Province for Green Manufacturing of Fine Chemicals,
Key Laboratory of Green Chemical Media and Reactions, Ministry of
Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P. R. China
| | - Zhiguo Zhang
- Collaborative
Innovation
Center of Henan Province for Green Manufacturing of Fine Chemicals,
Key Laboratory of Green Chemical Media and Reactions, Ministry of
Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P. R. China
| | - Guisheng Zhang
- Collaborative
Innovation
Center of Henan Province for Green Manufacturing of Fine Chemicals,
Key Laboratory of Green Chemical Media and Reactions, Ministry of
Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P. R. China
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34
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Fuwa H. Contemporary Strategies for the Synthesis of Tetrahydropyran Derivatives: Application to Total Synthesis of Neopeltolide, a Marine Macrolide Natural Product. Mar Drugs 2016; 14:E65. [PMID: 27023567 PMCID: PMC4849069 DOI: 10.3390/md14040065] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Revised: 03/15/2016] [Accepted: 03/17/2016] [Indexed: 02/07/2023] Open
Abstract
Tetrahydropyrans are structural motifs that are abundantly present in a range of biologically important marine natural products. As such, significant efforts have been paid to the development of efficient and versatile methods for the synthesis of tetrahydropyran derivatives. Neopeltolide, a potent antiproliferative marine natural product, has been an attractive target compound for synthetic chemists because of its complex structure comprised of a 14-membered macrolactone embedded with a tetrahydropyran ring, and twenty total and formal syntheses of this natural product have been reported so far. This review summarizes the total and formal syntheses of neopeltolide and its analogues, highlighting the synthetic strategies exploited for constructing the tetrahydropyran ring.
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Affiliation(s)
- Haruhiko Fuwa
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan.
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35
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Sabbasani VR, Lee H, Xia Y, Lee D. Complementary Iron(II)‐Catalyzed Oxidative Transformations of Allenes with Different Oxidants. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201510006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Venkata R. Sabbasani
- Department of Chemistry University of Illinois at Chicago 845 West Taylor Street Chicago IL 60607 USA
| | - Hyunjin Lee
- Department of Chemistry University of Illinois at Chicago 845 West Taylor Street Chicago IL 60607 USA
| | - Yuanzhi Xia
- College of Chemistry and Materials Engineering Wenzhou University Wenzhou Zhejiang Province 325035 P.R. China
| | - Daesung Lee
- Department of Chemistry University of Illinois at Chicago 845 West Taylor Street Chicago IL 60607 USA
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36
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Sabbasani VR, Lee H, Xia Y, Lee D. Complementary Iron(II)‐Catalyzed Oxidative Transformations of Allenes with Different Oxidants. Angew Chem Int Ed Engl 2015; 55:1151-5. [PMID: 26636261 DOI: 10.1002/anie.201510006] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Revised: 11/10/2015] [Indexed: 12/16/2022]
Affiliation(s)
- Venkata R. Sabbasani
- Department of Chemistry University of Illinois at Chicago 845 West Taylor Street Chicago IL 60607 USA
| | - Hyunjin Lee
- Department of Chemistry University of Illinois at Chicago 845 West Taylor Street Chicago IL 60607 USA
| | - Yuanzhi Xia
- College of Chemistry and Materials Engineering Wenzhou University Wenzhou Zhejiang Province 325035 P.R. China
| | - Daesung Lee
- Department of Chemistry University of Illinois at Chicago 845 West Taylor Street Chicago IL 60607 USA
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37
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Wendlandt AE, Stahl SS. Quinone-Catalyzed Selective Oxidation of Organic Molecules. Angew Chem Int Ed Engl 2015; 54:14638-58. [PMID: 26530485 PMCID: PMC4859943 DOI: 10.1002/anie.201505017] [Citation(s) in RCA: 241] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Indexed: 01/12/2023]
Abstract
Quinones are common stoichiometric reagents in organic chemistry. Para-quinones with high reduction potentials, such as DDQ and chloranil, are widely used and typically promote hydride abstraction. In recent years, many catalytic applications of these methods have been achieved by using transition metals, electrochemistry, or O2 to regenerate the oxidized quinone in situ. Complementary studies have led to the development of a different class of quinones that resemble the ortho-quinone cofactors in copper amine oxidases and mediate the efficient and selective aerobic and/or electrochemical dehydrogenation of amines. The latter reactions typically proceed by electrophilic transamination and/or addition-elimination reaction mechanisms, rather than hydride abstraction pathways. The collective observations show that the quinone structure has a significant influence on the reaction mechanism and has important implications for the development of new quinone reagents and quinone-catalyzed transformations.
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Affiliation(s)
- Alison E Wendlandt
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706 (USA)
| | - Shannon S Stahl
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706 (USA).
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38
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Wendlandt AE, Stahl SS. Chinon‐katalysierte, selektive Oxidation organischer Moleküle. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201505017] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Alison E. Wendlandt
- Department of Chemistry, University of Wisconsin‐Madison, 1101 University Avenue, Madison, Wisconsin 53706 (USA)
| | - Shannon S. Stahl
- Department of Chemistry, University of Wisconsin‐Madison, 1101 University Avenue, Madison, Wisconsin 53706 (USA)
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39
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Jalilov AS, Lu J, Kochi JK. Charge-transfer complex formations of tetracyanoquinone (cyanil) and aromatic electron donors. J PHYS ORG CHEM 2015. [DOI: 10.1002/poc.3485] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Almaz S. Jalilov
- Department of Chemistry; University of Houston; 4800 Calhoun Houston TX 77204 USA
| | - Jianjiang Lu
- Department of Chemistry; University of Houston; 4800 Calhoun Houston TX 77204 USA
| | - Jay K. Kochi
- Department of Chemistry; University of Houston; 4800 Calhoun Houston TX 77204 USA
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40
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Lemercier BC, Pierce JG. Synthesis of 1,4,2-Oxathiazoles via Oxidative Cyclization of Thiohydroximic Acids. Org Lett 2015; 17:4542-5. [DOI: 10.1021/acs.orglett.5b02256] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Bérénice C. Lemercier
- Department
of Chemistry, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Joshua G. Pierce
- Department
of Chemistry, North Carolina State University, Raleigh, North Carolina 27695, United States
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41
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Narayan R, Matcha K, Antonchick AP. Metal-Free Oxidative C-C Bond Formation through C-H Bond Functionalization. Chemistry 2015; 21:14678-93. [PMID: 26239615 DOI: 10.1002/chem.201502005] [Citation(s) in RCA: 134] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The formation of C-C bonds embodies the core of organic chemistry because of its fundamental application in generation of molecular diversity and complexity. C-C bond-forming reactions are well-known challenges. To achieve this goal through direct functionalization of C-H bonds in both of the coupling partners represents the state-of-the-art in organic synthesis. Oxidative C-C bond formation obviates the need for prefunctionalization of both substrates. This Minireview is dedicated to the field of C-C bond-forming reactions through direct C-H bond functionalization under completely metal-free oxidative conditions. Selected important developments in this area have been summarized with representative examples and discussions on their reaction mechanisms.
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Affiliation(s)
- Rishikesh Narayan
- Abteilung Chemische Biologie, Max-Planck-Institut für Molekulare Physiologie, Otto-Hahn Strasse 11, 44227 Dortmund (Germany)
| | - Kiran Matcha
- Abteilung Chemische Biologie, Max-Planck-Institut für Molekulare Physiologie, Otto-Hahn Strasse 11, 44227 Dortmund (Germany).,Present Address: API Small Molecule Process Research and Development, Janssen Pharmaceutica NV, Turnhotsweg 30, 2340 Beerse (Belgium)
| | - Andrey P Antonchick
- Abteilung Chemische Biologie, Max-Planck-Institut für Molekulare Physiologie, Otto-Hahn Strasse 11, 44227 Dortmund (Germany). .,Fakultät Chemie und Chemische Biologie, Technische Universität Dortmund, Otto-Hahn Strasse 6, 44221 Dortmund (Germany).
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Affiliation(s)
- GuangRong Peh
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Paul E. Floreancig
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
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43
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Saidulu G, Kumar RA, Reddy KR. Iron-catalyzed C–N bond formation via oxidative Csp3–H bond functionalization adjacent to nitrogen in amides and anilines: Synthesis of N-alkyl and N-benzyl azoles. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.05.048] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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44
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Tandem C-H oxidation/cyclization/rearrangement and its application to asymmetric syntheses of (-)-brussonol and (-)-przewalskine E. Nat Commun 2015; 6:7332. [PMID: 26081438 PMCID: PMC4557391 DOI: 10.1038/ncomms8332] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2014] [Accepted: 04/27/2015] [Indexed: 12/26/2022] Open
Abstract
Natural products are a vital source of lead compounds in drug discovery. Development of efficient tandem reactions to build useful compounds and apply them to the synthesis of natural products is not only a significant challenge but also an important goal for chemists. Here we describe a tandem C–H oxidation/cyclization/rearrangement of isochroman-derived allylic silylethers, promoted by DDQ and InCl3. This method allows the efficient construction of tricyclic benzoxa[3.2.1]octanes with a wide substrate scope. We employ this tandem reaction to achieve the asymmetric total syntheses of (−)-brussonol and (−)-przewalskine E. The ability to form complex molecular architectures from simpler precursors is important for drug discovery and medicinal chemistry. Here, the authors report a cascade reaction giving access to tricyclic products and apply it in the total synthesis of two natural products.
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45
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Zhou L, Xu B, Zhang J. Metal-Free Dehydrogenative Diels-Alder Reactions of 2-Methyl-3-Alkylindoles with Dienophiles: Rapid Access to Tetrahydrocarbazoles, Carbazoles, and Heteroacenes. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201503549] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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46
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Zhou L, Xu B, Zhang J. Metal-Free Dehydrogenative Diels-Alder Reactions of 2-Methyl-3-Alkylindoles with Dienophiles: Rapid Access to Tetrahydrocarbazoles, Carbazoles, and Heteroacenes. Angew Chem Int Ed Engl 2015; 54:9092-6. [DOI: 10.1002/anie.201503549] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2015] [Indexed: 12/15/2022]
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47
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Campbell JM, Smith JA, Gonzalez L, Moeller KD. Competition studies and the relative reactivity of enol ether and allylsilane coupling partners toward ketene dithioacetal derived radical cations. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.01.144] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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48
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Hubert JG, Furkert DP, Brimble MA. Synthesis of the Spirocyclic Framework of Sesterterpenoid Natural Products. J Org Chem 2015; 80:2715-23. [DOI: 10.1021/jo502897u] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Jonathan G. Hubert
- School of Chemical Sciences
and Maurice Wilkins Centre for Molecular Biodiscovery, University of Auckland, 23 Symonds Street, Auckland 1142, New Zealand
| | - Daniel. P. Furkert
- School of Chemical Sciences
and Maurice Wilkins Centre for Molecular Biodiscovery, University of Auckland, 23 Symonds Street, Auckland 1142, New Zealand
| | - Margaret A. Brimble
- School of Chemical Sciences
and Maurice Wilkins Centre for Molecular Biodiscovery, University of Auckland, 23 Symonds Street, Auckland 1142, New Zealand
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49
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Qian PC, Liu Y, Song RJ, Hu M, Yang XH, Xiang JN, Li JH. (Diacetoxyiodo)benzene-Mediated Oxygenation of Benzylic C(sp3)-H Bonds withN-Hydroxyamides at Room Temperature. European J Org Chem 2015. [DOI: 10.1002/ejoc.201403616] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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50
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Graaf MD, Moeller KD. Photoredox Catalysts: Synthesis of the Bipyrazine Ligand. J Org Chem 2015; 80:2032-5. [DOI: 10.1021/jo502925u] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Matthew D. Graaf
- Department
of Chemistry, Washington University in St. Louis, St. Louis, Missouri 63130, United States
| | - Kevin D. Moeller
- Department
of Chemistry, Washington University in St. Louis, St. Louis, Missouri 63130, United States
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