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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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2
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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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3
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Kumar D, Tiwari R, Verma DK, Yadav S, Adhikary P, Krishnamoorthi S. Synthesis, characterization and electro-conducting study of isomeric polythiophene. SOFT MATTER 2021; 17:9697-9707. [PMID: 34642719 DOI: 10.1039/d1sm01217g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Herein we have reported for the first time a one-pot, one step methodology to synthesize isomeric polythiophene (IPTh) possessing 2,2, 2,4 and 5,4 linkages. The method of polymerization of thiophene to IPTh involved reacting thiophene with DDQ in the presence of concentrated H2SO4 at 40 °C and the polymerization is completed in 10 minutes. The synthesized IPTh was characterized by various spectroscopic and microscopic techniques. The formation of polaron and bipolaron in an iodine doped sample (IPTh-I2) has been confirmed by IR, Raman and UV-Vis spectra. The electrical conductivity of the synthesized IPTh and IPTh-I2 have been studied by impedance spectroscopy and found to be ∼10-5 and 10-3 S cm-1 respectively. IPTh exhibits an excellent thermal stability up to 150 °C, and low optical band gap of 3.49 eV suitable for photovoltaic applications. The weight average molecular weight of IPTh has been found to be 18.636 kDa, and it has a better post functionalization capability and hence wider scope than polythiophene (PTh).
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Affiliation(s)
- Devendra Kumar
- Department of Chemistry, Center of Advanced Study, Institute of Science, Banaras Hindu University, Varanasi-221005, India.
| | - Rudramani Tiwari
- Department of Chemistry, Center of Advanced Study, Institute of Science, Banaras Hindu University, Varanasi-221005, India.
| | - Dipendra Kumar Verma
- Department of Chemistry, Center of Advanced Study, Institute of Science, Banaras Hindu University, Varanasi-221005, India.
| | - Shashikant Yadav
- Department of Chemistry, Center of Advanced Study, Institute of Science, Banaras Hindu University, Varanasi-221005, India.
| | - Pubali Adhikary
- Department of Chemistry, Center of Advanced Study, Institute of Science, Banaras Hindu University, Varanasi-221005, India.
| | - S Krishnamoorthi
- Department of Chemistry, Center of Advanced Study, Institute of Science, Banaras Hindu University, Varanasi-221005, India.
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4
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Džambaski Z, Bondžić AM, Triandafillidi I, Kokotos CG, Bondžić BP. Organocatalytic, Organic Oxidant Promoted, Enamine C−H Oxidation/Cyclopropanation Reaction. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100630] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Zdravko Džambaski
- University of Belgrade-Institute of Chemistry Technology and Metallurgy Department of Chemistry Njegoševa 12 11000 Belgrade, Republic of Serbia
| | - Aleksandra M. Bondžić
- Vinča Institute of Nuclear Sciences National Institute of the Republic of Serbia University of Belgrade P.O. Box 522 11000 Belgrade Serbia
| | - Ierasia Triandafillidi
- Laboratory of Organic Chemistry Department of Chemistry National and Kapodistrian University of Athens Panepistimiopolis 15771 Athens Greece
| | - Christoforos G. Kokotos
- Laboratory of Organic Chemistry Department of Chemistry National and Kapodistrian University of Athens Panepistimiopolis 15771 Athens Greece
| | - Bojan P. Bondžić
- University of Belgrade-Institute of Chemistry Technology and Metallurgy Department of Chemistry Njegoševa 12 11000 Belgrade, Republic of Serbia
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5
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Khan I, Ibrar A, Zaib S. Alkynoates as Versatile and Powerful Chemical Tools for the Rapid Assembly of Diverse Heterocycles under Transition-Metal Catalysis: Recent Developments and Challenges. Top Curr Chem (Cham) 2021; 379:3. [PMID: 33398642 DOI: 10.1007/s41061-020-00316-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Accepted: 11/16/2020] [Indexed: 12/15/2022]
Abstract
Heterocycles, heteroaromatics and spirocyclic entities are ubiquitous components of a wide plethora of synthetic drugs, biologically active natural products, marketed pharmaceuticals and agrochemical targets. Recognizing their high proportion in drugs and rich pharmacological potential, these invaluable structural motifs have garnered significant interest, thus enabling the development of efficient catalytic methodologies providing access to architecturally complex and diverse molecules with high atom-economy and low cost. These chemical processes not only allow the formation of diverse heterocycles but also utilize a range of flexible and easily accessible building units in a single operation to discover diversity-oriented synthetic approaches. Alkynoates are significantly important, diverse and powerful building blocks in organic chemistry due to their unique and inherent properties such as the electronic bias on carbon-carbon triple bonds posed by electron-withdrawing groups or the metallic coordination site provided by carbonyl groups. The present review highlights the comprehensive picture of the utility of alkynoates (2007-2019) for the synthesis of various heterocycles (> 50 types) using transition-metal catalysts (Ru, Rh, Pd, Ir, Ag, Au, Pt, Cu, Mn, Fe) in various forms. The valuable function of versatile alkynoates (bearing multifunctional groups) as simple and useful starting materials is explored, thus cyclizing with an array of coupling partners to deliver a broad range of oxygen-, nitrogen-, sulfur-containing heterocycles alongside fused-, and spiro-heterocyclic compounds. In addition, these examples will also focus the scope and reaction limitations, as well as mechanistic investigations into the synthesis of these heterocycles. The biological significance will also be discussed, citing relevant examples of drug molecules highlighting each class of heterocycles. This review summarizes the recent developments in the synthetic methods for the synthesis of various heterocycles using alkynoates as readily available starting materials under transition-metal catalysis.
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Affiliation(s)
- Imtiaz Khan
- Department of Chemistry, School of Natural Sciences, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK.
- Manchester Institute of Biotechnology, The University of Manchester, 131 Princess Street, Manchester, M1 7DN, UK.
| | - Aliya Ibrar
- Department of Chemistry, Faculty of Natural Sciences, The University of Haripur, Haripur, KPK-22620, Pakistan
| | - Sumera Zaib
- Department of Biochemistry, Faculty of Life Sciences, University of Central Punjab, Lahore, 54590, Pakistan
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6
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Rostoll‐Berenguer J, Blay G, Pedro JR, Vila C. Asymmetric Oxidative Mannich Reactions. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202001017] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Jaume Rostoll‐Berenguer
- Departament de Química Orgànica Facultat de Química Universitat de València Dr. Moliner 50 46100 Burjassot, València Spain
| | - Gonzalo Blay
- Departament de Química Orgànica Facultat de Química Universitat de València Dr. Moliner 50 46100 Burjassot, València Spain
| | - José R. Pedro
- Departament de Química Orgànica Facultat de Química Universitat de València Dr. Moliner 50 46100 Burjassot, València Spain
| | - Carlos Vila
- Departament de Química Orgànica Facultat de Química Universitat de València Dr. Moliner 50 46100 Burjassot, València Spain
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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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8
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Džambaski Z, Tzaras D, Lee S, Kokotos CG, Bondzic BP. Enantioselective Organocatalytic Enamine C−H Oxidation/Diels‐ Alder Reaction. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900061] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Zdravko Džambaski
- Center for Chemistry, ICTM instituteUniversity of Belgrade Njegoseva 12 11 000 Belgrade Serbia
| | - Dimitrios‐Ioannis Tzaras
- Laboratory of Organic Chemistry, Departmentof ChemistryNational and Kapodistrian University of Athens, Panepistimiopolis 15771 Athens Greece
| | - Sunggi Lee
- Max-Planck-Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Christoforos G. Kokotos
- Laboratory of Organic Chemistry, Departmentof ChemistryNational and Kapodistrian University of Athens, Panepistimiopolis 15771 Athens Greece
| | - Bojan P. Bondzic
- Center for Chemistry, ICTM instituteUniversity of Belgrade Njegoseva 12 11 000 Belgrade Serbia
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9
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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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10
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Liu Q, Yu S, Hu L, Hussain MI, Zhang X, Xiong Y. Cross-dehydrogenative coupling strategy for phosphonation and cyanation of secondary N-alkyl anilines by employing 2,3-dichloro-5,6-dicyanobenzoquinone. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.10.058] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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11
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Gouranourimi A, Chipman A, Babaahmadi R, Olding A, Yates BF, Ariafard A. Nazarov cyclisations initiated by DDQ-oxidised pentadienyl ether: a mechanistic investigation from the DFT perspective. Org Biomol Chem 2018; 16:9021-9029. [PMID: 30427044 DOI: 10.1039/c8ob02590h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Nazarov cyclisation is an important and reliable reaction for the synthesis of cyclopentenones. Density functional theory (DFT) has been utilised to study the mechanism of Nazarov cyclisations initiated by oxidation of pentadienyl ethers by a benzoquinone derivative (DDQ), as recently reported by West et al. (Angew. Chem., Int. Ed., 2017, 56, 6335). We determined that the reaction is most likely initiated by a hydride transfer from the pentadienyl ether to an oxygen of DDQ through a concerted pathway and not a single electron transfer mechanism. This oxidation by hydride abstraction leads to the formation of a pentadienyl cation from which the 4π electrocyclisation occurs, giving an alkoxycyclopentenyl cation. The ensuing cation is subsequently deprotonated by the reduced DDQ to afford an enol ether product. Consistent with experimental results, the hydride transfer is calculated to be the rate determining step and it can be accelerated by using electron donating substituents on the pentadienyl ether substrate. Indeed, the electron donating substituents increase the HOMO energy of the ether, making it more reactive toward oxidation. It is predicted that an unsubstituted benzoquinone, due to having a higher lying LUMO, shows much less reactivity than DDQ. Interestingly, we found an excellent correlation between the hydride transfer activation energy and the gap between the ether HOMO and the benzoquinone LUMO. From this correlation, we propose a predictive formula for reactivity of different types of substrates in the corresponding reaction.
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Affiliation(s)
- Ali Gouranourimi
- School of Natural Sciences-Chemistry, University of Tasmania, Hobart, Tasmania 7001, Australia.
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12
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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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13
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Hloušková Z, Tydlitát J, Kong M, Pytela O, Mikysek T, Klikar M, Almonasy N, Dvořák M, Jiang Z, Růžička A, Bureš F. Structure-Catalytic Activity in a Series of Push-Pull Dicyanopyrazine/Dicyanoimidazole Photoredox Catalysts. ChemistrySelect 2018. [DOI: 10.1002/slct.201800719] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Zuzana Hloušková
- Institute of Organic Chemistry and Technology; Faculty of Chemical Technology, University of Pardubice; Studentská 573, Pardubice 53210 Czech Republic
| | - Jiří Tydlitát
- Institute of Organic Chemistry and Technology; Faculty of Chemical Technology, University of Pardubice; Studentská 573, Pardubice 53210 Czech Republic
| | - Manman Kong
- Key Laboratory of Natural Medicine and Immuno-Engineering of Henan Province; Henan University; Kaifeng Henan 475004, People's Republic of China
| | - Oldřich Pytela
- Institute of Organic Chemistry and Technology; Faculty of Chemical Technology, University of Pardubice; Studentská 573, Pardubice 53210 Czech Republic
| | - Tomáš Mikysek
- Department of Analytical Chemistry; Faculty of Chemical Technology, University of Pardubice; Studentská 573 Pardubice 53210 Czech Republic
| | - Milan Klikar
- Institute of Organic Chemistry and Technology; Faculty of Chemical Technology, University of Pardubice; Studentská 573, Pardubice 53210 Czech Republic
| | - Numan Almonasy
- Institute of Organic Chemistry and Technology; Faculty of Chemical Technology, University of Pardubice; Studentská 573, Pardubice 53210 Czech Republic
| | - Miroslav Dvořák
- Department of Physical Electronics; Faculty of Nuclear Sciences and Physical Engineering; Czech Technical University in Prague; V Holešovičkách 2 CZ-180 00 Prague, Czech Republic
| | - Zhiyong Jiang
- Key Laboratory of Natural Medicine and Immuno-Engineering of Henan Province; Henan University; Kaifeng Henan 475004, People's Republic of China
| | - Aleš Růžička
- Department of General and Inorganic Chemistry; Faculty of Chemical Technology; University of Pardubice; Studentská 573, Pardubice 53210 Czech Republic
| | - Filip Bureš
- Institute of Organic Chemistry and Technology; Faculty of Chemical Technology, University of Pardubice; Studentská 573, Pardubice 53210 Czech Republic
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14
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Kondo H, Yamakoshi H, Kimura A, Nakamura S. Cyclization of α-Diazo Esters Triggered by Oxidation: A Facile Preparation of 5-Aryl-2,3-dihydrofuran-4-carboxylates. ChemistrySelect 2017. [DOI: 10.1002/slct.201701090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Hideaki Kondo
- Graduate School of Pharmaceutical Sciences; Nagoya City University; 3-1 Tanabe-dori, Mizuho-ku Nagoya 467-8603 Japan
| | - Hiroyuki Yamakoshi
- Graduate School of Pharmaceutical Sciences; Nagoya City University; 3-1 Tanabe-dori, Mizuho-ku Nagoya 467-8603 Japan
| | - Ayaka Kimura
- Graduate School of Pharmaceutical Sciences; Nagoya City University; 3-1 Tanabe-dori, Mizuho-ku Nagoya 467-8603 Japan
| | - Seiichi Nakamura
- Graduate School of Pharmaceutical Sciences; Nagoya City University; 3-1 Tanabe-dori, Mizuho-ku Nagoya 467-8603 Japan
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Batra A, Singh P, Singh KN. Recent Advances in Functionalization of α-C(sp3)-H Centres in Inactivated Ethers through Cross Dehydrogenative Coupling. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700341] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Aanchal Batra
- Department of Chemistry; DAV College; Sec 10-D Chandigarh India
| | - Paramjit Singh
- Department of Chemistry and Centre of Advanced Studies in Chemistry; Panjab University; 160014 Chandigarh India
| | - Kamal Nain Singh
- Department of Chemistry and Centre of Advanced Studies in Chemistry; Panjab University; 160014 Chandigarh India
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16
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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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17
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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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18
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Batra A, Singh P, Singh KN. Cross Dehydrogenative Coupling (CDC) Reactions ofN,N-Disubstituted Formamides, Benzaldehydes and Cycloalkanes. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600401] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Aanchal Batra
- Department of Chemistry; DAV College; Sec 10-D Chandigarh India
| | - Paramjit Singh
- Department of Chemistry and Centre of Advanced Studies in Chemistry; Panjab University; 160014 Chandigarh India
| | - Kamal Nain Singh
- Department of Chemistry and Centre of Advanced Studies in Chemistry; Panjab University; 160014 Chandigarh India
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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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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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21
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Han YP, Song XR, Qiu YF, Hao XH, Wang J, Wu XX, Liu XY, Liang YM. Lewis Acid Mediated Tandem Reaction of Propargylic Alcohols with Hydroxylamine Hydrochloride To Give α,β-Unsaturated Amides and Alkenyl Nitriles. J Org Chem 2015; 80:9200-7. [DOI: 10.1021/acs.joc.5b01633] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Ya-Ping Han
- State Key Laboratory of Applied
Organic Chemistry, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Xian-Rong Song
- State Key Laboratory of Applied
Organic Chemistry, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Yi-Feng Qiu
- State Key Laboratory of Applied
Organic Chemistry, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Xin-Hua Hao
- State Key Laboratory of Applied
Organic Chemistry, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Jia Wang
- State Key Laboratory of Applied
Organic Chemistry, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Xin-Xing Wu
- State Key Laboratory of Applied
Organic Chemistry, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Xue-Yuan Liu
- State Key Laboratory of Applied
Organic Chemistry, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Yong-Min Liang
- State Key Laboratory of Applied
Organic Chemistry, Lanzhou University, Lanzhou 730000, People’s Republic of China
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22
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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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23
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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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24
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Cheng D, Yuan K, Xu X, Yan J. The oxidative coupling of benzylic compounds catalyzed by 2,3-dichloro-5,6-dicyano-benzoquinone and sodium nitrite using molecular oxygen as a co-oxidant. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.02.018] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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25
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A Dehydrogenative Diels-Alder Reaction of Prenyl Derivatives with 2,3-Dichloro-5,6-dicyanobenzoquinone. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201401038] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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26
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Qiu J, Zhang R. Direct transformation of arylpropynes to acrylamides via a three-step tandem reaction. Org Biomol Chem 2014; 12:1556-60. [PMID: 24480932 DOI: 10.1039/c3ob42444h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel and metal-free acrylamides formation between arylpropynes and hydroxylamine hydrochloride through sp(3) C-H and C-C bond cleavage has been achieved with DDQ as an oxidant. The mechanistic study shows that the acrylamides are formed through a three-step tandem sequence, including cross-dehydrogenative-coupling (CDC) reaction, aza-Meyer-Schuster rearrangement and Beckmann rearrangement.
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Affiliation(s)
- Jun Qiu
- Department of Chemistry, Tongji University, Shanghai 200092, P. R. China
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27
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Metal-Free 2,3-Dichloro-5,6-dicyano-1,4-benzoquinone (DDQ)-Mediated Cross-Dehydrogenative-Coupling (CDC) of Benzylic C(sp3)H Bonds and Vinylic C(sp2)H Bonds: Efficient One-Pot Synthesis of 1H-Indenes. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400357] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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28
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Li JS, Cai FF, Li ZW, Liu WD, Simpson J, Xue Y, Pang HL, Huang PM, Cao Z, Li DL. One-step metal-free construction of fluorescent 5-aryl-2,3-dicyanofurans from simple aryl ketones with DDQ. RSC Adv 2014. [DOI: 10.1039/c3ra45462b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
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29
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Hayashi Y, Itoh T, Ishikawa H. Organocatalyst‐Mediated Dehydrogenation of Aldehydes to α,β‐Unsaturated Aldehydes, and Oxidative and Enantioselective Reaction of Aldehydes and Nitromethane Catalyzed by Diphenylprolinol Silyl Ether. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300919] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yujiro Hayashi
- Department of Chemistry, Graduate School of Science, Tohoku University, 6–3 Aramaki‐Aza Aoba, Aoba‐ku, Sendai 980‐8578, Japan, Fax: (+81)‐22‐795‐6566; phone: (+81)‐22‐795‐3554; homepage: http://www.ykbsc.chem.tohoku.ac.jp
- Before June 20, 2012: Department of Industrial Chemistry, Faculty of Engineering, Tokyo University of Science, Kagurazaka, Shinjuku‐ku, Tokyo 162‐8601, Japan
| | - Takahiko Itoh
- Before June 20, 2012: Department of Industrial Chemistry, Faculty of Engineering, Tokyo University of Science, Kagurazaka, Shinjuku‐ku, Tokyo 162‐8601, Japan
| | - Hayato Ishikawa
- Before June 20, 2012: Department of Industrial Chemistry, Faculty of Engineering, Tokyo University of Science, Kagurazaka, Shinjuku‐ku, Tokyo 162‐8601, Japan
- Present address: Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2‐39‐1, Kurokami, Chuo‐ku, Kumamoto 860‐8555, Japan
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30
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Cui Y, Villafane LA, Clausen DJ, Floreancig PE. Bimolecular Coupling Reactions through Oxidatively Generated Aromatic Cations: Scope and Stereocontrol. Tetrahedron 2013; 69:7618-7626. [PMID: 23913987 DOI: 10.1016/j.tet.2013.05.011] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Chromenes, isochromenes, and benzoxathioles react with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone to form stable aromatic cations that react with a range of nucleophiles. These oxidative fragment coupling reactions provide rapid access to structurally diverse heterocycles. Conducting the reactions in the presence of a chiral Brønsted acid results in the formation of an asymmetric ion pair that can provide enantiomerically enriched products in a rare example of a stereoselective process resulting from the generation of a chiral electrophile through oxidative carbon-hydrogen bond cleavage.
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Affiliation(s)
- Yubo Cui
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, Telephone: (+1)412-62408727
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31
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Bhunia S, Ghosh S, Dey D, Bisai A. DDQ-mediated Direct Intramolecular-Dehydrogenative-Coupling (IDC): Expeditious Approach to the Tetracyclic Core of Ergot Alkaloids. Org Lett 2013; 15:2426-9. [DOI: 10.1021/ol400899e] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Subhajit Bhunia
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, MP − 462 023, India
| | - Santanu Ghosh
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, MP − 462 023, India
| | - Dhananjay Dey
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, MP − 462 023, India
| | - Alakesh Bisai
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, MP − 462 023, India
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32
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Zhou F, Simon MO, Li CJ. Transition-Metal-Free One-Pot Synthesis of Biaryls from Grignard Reagents and Substituted Cyclohexanones. Chemistry 2013; 19:7151-5. [DOI: 10.1002/chem.201300491] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Indexed: 11/08/2022]
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33
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Cheng D, Ye X, Cui W, Sun R, Yan J. Oxidative Alkylation of 1,3-Diarylpropenes using O2 catalysed by 2,3-dichloro-5,6-dicyano-benzoquinone and N-hydroxyphthalimide. JOURNAL OF CHEMICAL RESEARCH 2012. [DOI: 10.3184/174751912x13527292608404] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A simple oxidative alkylation of 1,3-diarylpropenes with 1,3-dicarbonyl compounds is reported with O2 catalysed by a mixture of 2,3-dichloro-5,6-dicyano-benzoquinone, N-hydroxyphthalimide, CuBr and NiCl2.
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Affiliation(s)
- Dongping Cheng
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Xinyi Ye
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Wei Cui
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Ruirui Sun
- College of Pharmaceutical Science, 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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34
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Qian W, Zhang L, Sun H, Jiang H, Liu H. Microwave-Assisted One-Step Synthesis of AcetophenonesviaPalladium-Catalyzed Regioselective Arylation of Vinyloxytrimethylsilane. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201200334] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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35
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Clausen DJ, Floreancig PE. Aromatic cations from oxidative carbon-hydrogen bond cleavage in bimolecular carbon-carbon bond forming reactions. J Org Chem 2012; 77:6574-82. [PMID: 22780559 DOI: 10.1021/jo301185h] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Chromenes and isochromenes react quickly with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) to form persistent aromatic oxocarbenium ions through oxidative carbon-hydrogen cleavage. This process is tolerant of electron-donating and electron-withdrawing groups on the benzene ring and additional substitution on the pyran ring. A variety of nucleophiles can be added to these cations to generate a diverse set of structures.
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Affiliation(s)
- Dane J Clausen
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA
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36
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Ghosh AK, Cheng X, Bai R, Hamel E. Total Synthesis of Potent Antitumor Macrolide, (-)-Zampanolide: An Oxidative Intramolecular Cyclization-Based Strategy. European J Org Chem 2012; 2012:4130-4139. [PMID: 23606808 PMCID: PMC3629982 DOI: 10.1002/ejoc.201200286] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2012] [Indexed: 11/05/2022]
Abstract
A detailed account of the enantioselective total synthesis of (-)-zampanolide, a macrolide marine natural product with high anti-cancer activity is described. For synthesis of the 4-methylene tetrahydropyran unit of (-)-zampanolide, initially, we relied upon an oxidative C-H activation of an alkenyl ether and intramolecular cyclization to provide the substituted tetrahydropyran ring. However, this strategy was unsuccessful. Subsequently, we found that a cinnamyl ether is critical for the successful oxidative intramolecular cyclization reaction. The synthesis also features a cross metathesis reaction to construct a tri-substituted olefin, a ring-closing metathesis to form a highly functionalized macrolactone and a chiral phosphoric acid promoted N-acyl aminal formation to furnish (-)-zampanolide stereoselectively and in good yield. The synthetic (-)-zampanolide had effects on cultured cells and on tubulin assembly consistent with properties reported for the natural product.
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Affiliation(s)
- Arun K. Ghosh
- Department of Chemistry and Department of Medicinal Chemistry, Purdue University 560 Oval Drive, West Lafayette, IN 47907 (USA), Fax: (+1) 765-496-1612
| | - Xu Cheng
- Department of Chemistry and Department of Medicinal Chemistry, Purdue University 560 Oval Drive, West Lafayette, IN 47907 (USA), Fax: (+1) 765-496-1612
| | - Ruoli Bai
- Screening Technologies Branch, Developmental Therapeutics Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute at Frederick, National Institutes of Health, Frederick, MD 21702 (USA)
| | - Ernest Hamel
- Screening Technologies Branch, Developmental Therapeutics Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute at Frederick, National Institutes of Health, Frederick, MD 21702 (USA)
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37
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CDC Reactions of N-Aryl Tetrahydroisoquinolines Using Catalytic Amounts of DDQ: CH Activation under Aerobic Conditions. Chemistry 2012; 18:5160-4. [DOI: 10.1002/chem.201200100] [Citation(s) in RCA: 131] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2012] [Indexed: 11/07/2022]
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38
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Wang Z, Mo H, Cheng D, Bao W. Metal-free synthesis of allylic amines by cross-dehydrogenative-coupling of 1,3-diarylpropenes with anilines and amides under mild conditions. Org Biomol Chem 2012; 10:4249-55. [DOI: 10.1039/c2ob06826e] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Subba Reddy BV, Borkar P, Yadav JS, Purushotham Reddy P, Kunwar AC, Sridhar B, Grée R. Oxidative Prins and Prins/Friedel–Crafts cyclizations for the stereoselective synthesis of dioxabicycles and hexahydro-1H-benzo[f]isochromenes via the benzylic C–H activation. Org Biomol Chem 2012; 10:1349-58. [DOI: 10.1039/c1ob06489d] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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40
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Affiliation(s)
- Soo J. Park
- School
of Chemistry and ‡Crystal Structure Analysis Facility, School of Chemistry, The University of Sydney, NSW 2006, Australia
| | - Jason R. Price
- School
of Chemistry and ‡Crystal Structure Analysis Facility, School of Chemistry, The University of Sydney, NSW 2006, Australia
| | - Matthew H. Todd
- School
of Chemistry and ‡Crystal Structure Analysis Facility, School of Chemistry, The University of Sydney, NSW 2006, Australia
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41
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Son YW, Kwon TH, Lee JK, Pae AN, Lee JY, Cho YS, Min SJ. A Concise Synthesis of Tetrabenazine: An Intramolecular Aza-Prins-Type Cyclization via Oxidative C–H Activation. Org Lett 2011; 13:6500-3. [DOI: 10.1021/ol202792q] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Young Wook Son
- Department of Chemistry, College of Sciences, Kyung Hee University, 1 Hoegi-Dong, Seoul 130-701, Republic of Korea, Center for Neuro-Medicine, Korea Institute of Science and Technology (KIST), Seoul, 136-791, Republic of Korea, and School of Science, University of Science and Technology (UST), Daejeon, 305-333, Republic of Korea
| | - Tae Hui Kwon
- Department of Chemistry, College of Sciences, Kyung Hee University, 1 Hoegi-Dong, Seoul 130-701, Republic of Korea, Center for Neuro-Medicine, Korea Institute of Science and Technology (KIST), Seoul, 136-791, Republic of Korea, and School of Science, University of Science and Technology (UST), Daejeon, 305-333, Republic of Korea
| | - Jae Kyun Lee
- Department of Chemistry, College of Sciences, Kyung Hee University, 1 Hoegi-Dong, Seoul 130-701, Republic of Korea, Center for Neuro-Medicine, Korea Institute of Science and Technology (KIST), Seoul, 136-791, Republic of Korea, and School of Science, University of Science and Technology (UST), Daejeon, 305-333, Republic of Korea
| | - Ae Nim Pae
- Department of Chemistry, College of Sciences, Kyung Hee University, 1 Hoegi-Dong, Seoul 130-701, Republic of Korea, Center for Neuro-Medicine, Korea Institute of Science and Technology (KIST), Seoul, 136-791, Republic of Korea, and School of Science, University of Science and Technology (UST), Daejeon, 305-333, Republic of Korea
| | - Jae Yeol Lee
- Department of Chemistry, College of Sciences, Kyung Hee University, 1 Hoegi-Dong, Seoul 130-701, Republic of Korea, Center for Neuro-Medicine, Korea Institute of Science and Technology (KIST), Seoul, 136-791, Republic of Korea, and School of Science, University of Science and Technology (UST), Daejeon, 305-333, Republic of Korea
| | - Yong Seo Cho
- Department of Chemistry, College of Sciences, Kyung Hee University, 1 Hoegi-Dong, Seoul 130-701, Republic of Korea, Center for Neuro-Medicine, Korea Institute of Science and Technology (KIST), Seoul, 136-791, Republic of Korea, and School of Science, University of Science and Technology (UST), Daejeon, 305-333, Republic of Korea
| | - Sun-Joon Min
- Department of Chemistry, College of Sciences, Kyung Hee University, 1 Hoegi-Dong, Seoul 130-701, Republic of Korea, Center for Neuro-Medicine, Korea Institute of Science and Technology (KIST), Seoul, 136-791, Republic of Korea, and School of Science, University of Science and Technology (UST), Daejeon, 305-333, Republic of Korea
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42
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Shen Z, Dai J, Xiong J, He X, Mo W, Hu B, Sun N, Hu X. 2,3-Dichloro-5,6-dicyano-1,4-benzoquinone (DDQ)/tert-Butyl Nitrite/Oxygen: A Versatile Catalytic Oxidation System. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201100429] [Citation(s) in RCA: 87] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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43
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Hayashi Y, Itoh T, Ishikawa H. Oxidative and Enantioselective Cross-Coupling of Aldehydes and Nitromethane Catalyzed by Diphenylprolinol Silyl Ether. Angew Chem Int Ed Engl 2011; 50:3920-4. [DOI: 10.1002/anie.201006885] [Citation(s) in RCA: 122] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2010] [Revised: 02/22/2011] [Indexed: 11/09/2022]
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44
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Hayashi Y, Itoh T, Ishikawa H. Oxidative and Enantioselective Cross-Coupling of Aldehydes and Nitromethane Catalyzed by Diphenylprolinol Silyl Ether. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201006885] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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45
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Tucker JW, Narayanam JMR, Shah PS, Stephenson CRJ. Oxidative photoredox catalysis: mild and selective deprotection of PMB ethers mediated by visible light. Chem Commun (Camb) 2011; 47:5040-2. [PMID: 21431223 DOI: 10.1039/c1cc10827a] [Citation(s) in RCA: 123] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein we report an advancement in the application of visible light photoredox catalysts in the oxidation of electron-rich arenes resulting in the selective deprotection of para-methoxybenzyl (PMB) ethers. This method is highlighted by excellent functional group tolerance, protecting group orthogonality, mild reaction conditions and avoidance of stoichiometric redox byproducts.
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Affiliation(s)
- Joseph W Tucker
- Department of Chemistry and Center for Chemical Methodology and Library Development, Boston University, 590 Commonwealth Ave., Boston, MA, USA
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46
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Liu L, Floreancig PE. 2,3-Dichloro-5,6-dicyano-1,4-benzoquinone-catalyzed reactions employing MnO2 as a stoichiometric oxidant. Org Lett 2011; 12:4686-9. [PMID: 20863093 DOI: 10.1021/ol102078v] [Citation(s) in RCA: 85] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Several oxidative reactions can be effected with MnO(2) in the presence of substoichiometric quantities of DDQ. These transformations include oxidative cyclization, deprotection, and dehydrogenation reactions. The use of MnO(2) as a terminal oxidant for DDQ-mediated reactions is attractive based on economical and environmental factors.
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Affiliation(s)
- Lei Liu
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA
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47
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Ramesh D, Ramulu U, Rajaram S, Prabhakar P, Venkateswarlu Y. Metal-free oxidative C–C bond formation of active methylenic sp3 C–H bonds with benzylic sp3 C–H and allylic sp3 C–H bonds mediated by DDQ. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.07.080] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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48
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Correia C, Li CJ. Copper-Catalyzed Cross-Dehydrogenative Coupling (CDC) of Alkynes and Benzylic CH Bonds. Adv Synth Catal 2010. [DOI: 10.1002/adsc.201000066] [Citation(s) in RCA: 92] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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49
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Kumaraswamy G, Murthy AN, Pitchaiah A. FeCl3-Catalyzed Oxidative Allylation of sp2 and sp3 C−H Bond Adjacent to a Nitrogen Atom: Easy Access to Homoallyl Tertiary Amines. J Org Chem 2010; 75:3916-9. [DOI: 10.1021/jo1005813] [Citation(s) in RCA: 88] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Akula Narayana Murthy
- Organic Division-III, Indian Institute of Chemical Technology, Hyderabad 500 007, India
- An Associate Institution of University of Hyderabad, Hyderabad 500 046, India
| | - Arigala Pitchaiah
- Organic Division-III, Indian Institute of Chemical Technology, Hyderabad 500 007, India
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50
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Mendoza O, Rossey G, Ghosez L. Trialkylsilyl triflimides as easily tunable organocatalysts for allylation and benzylation of silyl carbon nucleophiles with non-genotoxic reagents. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.03.030] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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