1
|
Convenient Synthesis of Pyrazolo[4',3':5,6]pyrano[4,3- c][1,2]oxazoles via Intramolecular Nitrile Oxide Cycloaddition. Molecules 2021; 26:molecules26185604. [PMID: 34577075 PMCID: PMC8469150 DOI: 10.3390/molecules26185604] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 09/13/2021] [Accepted: 09/14/2021] [Indexed: 01/07/2023] Open
Abstract
A simple and efficient synthetic route to the novel 3a,4-dihydro-3H,7H- and 4H,7H-pyrazolo[4′,3′:5,6]pyrano[4,3-c][1,2]oxazole ring systems from 3-(prop-2-en-1-yloxy)- or 3-(prop-2-yn-1-yloxy)-1H-pyrazole-4-carbaldehyde oximes has been developed by employing the intramolecular nitrile oxide cycloaddition (INOC) reaction as the key step. The configuration of intermediate aldoximes was unambiguously determined using NOESY experimental data and comparison of the magnitudes of 1JCH coupling constants of the iminyl moiety, which were greater by approximately 13 Hz for the predominant syn isomer. The structures of the obtained heterocyclic products were confirmed by detailed 1H, 13C and 15N NMR spectroscopic experiments and HRMS measurements.
Collapse
|
2
|
Houk KN, Xue X, Liu F, Chen Y, Chen X, Jamieson C. Computations on Pericyclic Reactions Reveal the Richness of Ambimodal Transition States and Pericyclases. Isr J Chem 2021. [DOI: 10.1002/ijch.202100071] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- K. N. Houk
- Department of Chemistry and Biochemistry University of California Los Angeles CA 90095-1569 USA
| | - Xiao‐Song Xue
- Department of Chemistry Nankai University Tianjin 300071 China
| | - Fang Liu
- College of Sciences Nanjing Agricultural University Nanjing Jiangsu 210095 China
| | - Yu Chen
- School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 China
| | - Xiangyang Chen
- Department of Chemistry and Biochemistry University of California Los Angeles CA 90095-1569 USA
| | - Cooper Jamieson
- Department of Chemistry and Biochemistry University of California Los Angeles CA 90095-1569 USA
| |
Collapse
|
3
|
Houk KN, Liu F, Yang Z, Seeman JI. Die Evolution des Diels‐Alder‐Reaktionsmechanismus seit den 1930er Jahren: Woodward, Houk zusammen mit Woodward und der Einfluss der Computerchemie auf das Verständnis von Cycloadditionen. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202001654] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Kendall N. Houk
- Department of Chemistry and Biochemistry University of California Los Angeles California 90005 USA
| | - Fang Liu
- Department of Chemistry and Biochemistry University of California Los Angeles California 90005 USA
- College of Sciences Nanjing Agricultural University Nanjing 210095 China
| | - Zhongyue Yang
- Department of Chemistry and Biochemistry University of California Los Angeles California 90005 USA
| | - Jeffrey I. Seeman
- Department of Chemistry University of Richmond Richmond Virginia 23173 USA
| |
Collapse
|
4
|
Houk KN, Liu F, Yang Z, Seeman JI. Evolution of the Diels–Alder Reaction Mechanism since the 1930s: Woodward, Houk with Woodward, and the Influence of Computational Chemistry on Understanding Cycloadditions. Angew Chem Int Ed Engl 2021; 60:12660-12681. [DOI: 10.1002/anie.202001654] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 06/30/2020] [Indexed: 01/16/2023]
Affiliation(s)
- Kendall N. Houk
- Department of Chemistry and Biochemistry University of California Los Angeles CA 90005 USA
| | - Fang Liu
- Department of Chemistry and Biochemistry University of California Los Angeles CA 90005 USA
- College of Sciences Nanjing Agricultural University Nanjing 210095 China
| | - Zhongyue Yang
- Department of Chemistry and Biochemistry University of California Los Angeles CA 90005 USA
| | - Jeffrey I. Seeman
- Department of Chemistry University of Richmond Richmond VA 23173 USA
| |
Collapse
|
5
|
Bertuzzi G, McLeod D, Mohr LM, Jørgensen KA. Organocatalytic Enantioselective 1,3-Dipolar [6+4] Cycloadditions of Tropone. Chemistry 2020; 26:15491-15496. [PMID: 32677710 DOI: 10.1002/chem.202003329] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Indexed: 01/03/2023]
Abstract
A highly stereoselective 1,3-dipolar [6+4] cycloaddition towards bridged azabicyclo[4.3.1]decane scaffolds has been developed, reacting aldehydes, 2-aminomalonates and tropone under mild conditions in the presence of a chiral phosphoric acid catalyst. The scope is demonstrated for a series of aldehydes and 2-aminomalonates, and the reaction proceeds in high yields, >95:5 d.r. and up to 99 % ee. A series of transformations, as well as a mechanistic proposal, are presented.
Collapse
Affiliation(s)
- Giulio Bertuzzi
- Department of Chemistry, Aarhus University, Langelandsgade 140, 8000, Aarhus C, Denmark
| | - David McLeod
- Department of Chemistry, Aarhus University, Langelandsgade 140, 8000, Aarhus C, Denmark
| | - Lisa-Marie Mohr
- Department of Chemistry, Aarhus University, Langelandsgade 140, 8000, Aarhus C, Denmark
| | - Karl Anker Jørgensen
- Department of Chemistry, Aarhus University, Langelandsgade 140, 8000, Aarhus C, Denmark
| |
Collapse
|
6
|
Gharpure SJ, Naveen S, Chavan RS, Padmaja. Regioselective Synthesis of Halotriazoles and their Utility in Metal Catalyzed Coupling Reactions. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000973] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Santosh J. Gharpure
- Department of Chemistry Indian Institute of Technology Bombay 400076 Powai Mumbai India
| | - Sudi Naveen
- Department of Chemistry Indian Institute of Technology Bombay 400076 Powai Mumbai India
| | - Rupali S. Chavan
- Department of Chemistry Indian Institute of Technology Bombay 400076 Powai Mumbai India
| | - Padmaja
- Department of Chemistry Indian Institute of Technology Bombay 400076 Powai Mumbai India
| |
Collapse
|
7
|
Luo X, Liu S, Lan Y. Mechanism and Regioselectivity of 1,3‐Dipolar Cycloaddition of Nitrile Oxides to 3‐Methylene Oxindole: A Density Functional Theory Study. ChemistrySelect 2020. [DOI: 10.1002/slct.202002672] [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)
- Xiaoling Luo
- Chongqing Key Laboratory of Inorganic Functional Materials, College of ChemistryChongqing Normal University Chongqing 401331 China
| | - Song Liu
- Chongqing Key Laboratory of Theoretical and Computational ChemistrySchool of Chemistry and Chemical EngineeringChongqing University Chongqing 400030 China
| | - Yu Lan
- Chongqing Key Laboratory of Theoretical and Computational ChemistrySchool of Chemistry and Chemical EngineeringChongqing University Chongqing 400030 China
- College of Chemistryand Institute of Green CatalysisZhengzhou University Zhengzhou Henan 450001 China
| |
Collapse
|
8
|
Li J, Geng C, Weiske T, Schwarz H. Counter‐Intuitive Gas‐Phase Reactivities of [V
2
]
+
and [V
2
O]
+
towards CO
2
Reduction: Insight from Electronic Structure Calculations. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202001223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jilai Li
- Institut für Chemie Technische Universität Berlin 10623 Berlin Germany
- Institute of Theoretical Chemistry Jilin University 130023 Changchun China
| | - Caiyun Geng
- Institut für Chemie Technische Universität Berlin 10623 Berlin Germany
| | - Thomas Weiske
- Institut für Chemie Technische Universität Berlin 10623 Berlin Germany
| | - Helmut Schwarz
- Institut für Chemie Technische Universität Berlin 10623 Berlin Germany
| |
Collapse
|
9
|
Liu F, Chen Y, Houk KN. Huisgen's 1,3-Dipolar Cycloadditions to Fulvenes Proceed via Ambimodal [6+4]/[4+2] Transition States. Angew Chem Int Ed Engl 2020; 59:12412-12416. [PMID: 32384185 DOI: 10.1002/anie.202005265] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 05/06/2020] [Indexed: 11/08/2022]
Abstract
Huisgen's 1960 announcement of the concept of 1,3-dipolar cycloadditions was published the year before Alder's study of the reaction of diazomethane and dimethylfulvene. The diazomethane reaction was studied again in 1970 by Houk et al. and shown to give a [6+4] adduct. Padwa's nitrile ylide cycloaddition to dimethylfulvene (1978) gave [6+4] and [4+2] adducts. We performed computational studies of these reactions with density functional theory (DFT) and show that they involve ambimodal [6+4]/[4+2] transition states that can lead to either type of cycloadduct from one transition state. We dedicate this paper to the extraordinary life and humanity of Rolf Huisgen, and to the undying influence of his discoveries on chemistry.
Collapse
Affiliation(s)
- Fang Liu
- College of Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yu Chen
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - K N Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA, 90095-1569, USA
| |
Collapse
|
10
|
Li J, Geng C, Weiske T, Schwarz H. Counter-Intuitive Gas-Phase Reactivities of [V 2 ] + and [V 2 O] + towards CO 2 Reduction: Insight from Electronic Structure Calculations. Angew Chem Int Ed Engl 2020; 59:12308-12314. [PMID: 32100908 PMCID: PMC7383893 DOI: 10.1002/anie.202001223] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Indexed: 11/19/2022]
Abstract
[V2 O]+ remains "invisible" in the thermal gas-phase reaction of bare [V2 ]+ with CO2 giving rise to [V2 O2 ]+ ; this is because the [V2 O]+ intermediate is being consumed more than 230 times faster than it is generated. However, the fleeting existence of [V2 O]+ and its involvement in the [V2 ]+ → [V2 O2 ]+ chemistry are demonstrated by a cross-over labeling experiment with a 1:1 mixture of C16 O2 /C18 O2 , generating the product ions [V2 16 O2 ]+ , [V2 16 O18 O]+ , and [V2 18 O2 ]+ in a 1:2:1 ratio. Density functional theory (DFT) calculations help to understand the remarkable and unexpected reactivity differences of [V2 ]+ versus [V2 O]+ towards CO2 .
Collapse
Affiliation(s)
- Jilai Li
- Institut für ChemieTechnische Universität Berlin10623BerlinGermany
- Institute of Theoretical ChemistryJilin University130023ChangchunChina
| | - Caiyun Geng
- Institut für ChemieTechnische Universität Berlin10623BerlinGermany
| | - Thomas Weiske
- Institut für ChemieTechnische Universität Berlin10623BerlinGermany
| | - Helmut Schwarz
- Institut für ChemieTechnische Universität Berlin10623BerlinGermany
| |
Collapse
|
11
|
Liu F, Chen Y, Houk KN. Huisgen's 1,3‐Dipolar Cycloadditions to Fulvenes Proceed via Ambimodal [6+4]/[4+2] Transition States. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202005265] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Fang Liu
- College of Sciences Nanjing Agricultural University Nanjing 210095 China
| | - Yu Chen
- School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 China
| | - K. N. Houk
- Department of Chemistry and Biochemistry University of California, Los Angeles Los Angeles CA 90095-1569 USA
| |
Collapse
|
12
|
Affiliation(s)
- Bernd Giese
- Departement Chemie Universite de Fribourg Schweiz
| | - Herbert Mayr
- Department Chemie Ludwig-Maximilians-Universität München Deutschland
| | - Hans‐Ulrich Reißig
- Freie Universität Berlin Institut für Chemie und Biochemie Takustraße 3 14195 Berlin Deutschland
| |
Collapse
|
13
|
Affiliation(s)
- Bernd Giese
- Departement Chemie Universite de Fribourg Switzerland
| | - Herbert Mayr
- Department Chemie Ludwig-Maximilians-Universität München Germany
| | - Hans‐Ulrich Reissig
- Freie Universität Berlin Institut für Chemie und Biochemie Takustrasse 3 14195 Berlin Germany
| |
Collapse
|
14
|
Mlostoń G, Urbaniak K, Jasiński M, Würthwein E, Heimgartner H, Zimmer R, Reissig H. The [4+2]-Cycloaddition of α-Nitrosoalkenes with Thiochalcones as a Prototype of Periselective Hetero-Diels-Alder Reactions-Experimental and Computational Studies. Chemistry 2020; 26:237-248. [PMID: 31429509 PMCID: PMC6973135 DOI: 10.1002/chem.201903385] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Indexed: 11/11/2022]
Abstract
The [4+2]-cycloadditions of α-nitrosoalkenes with thiochalcones occur with high selectivity at the thioketone moiety of the dienophile providing styryl-substituted 4H-1,5,2-oxathiazines in moderate to good yields. Of the eight conceivable hetero-Diels-Alder adducts only this isomer was observed, thus a prototype of a highly periselective and regioselective cycloaddition has been identified. Analysis of crude product mixtures revealed that the α-nitrosoalkene also adds competitively to the thioketone moiety of the thiochalcone dimer affording bis-heterocyclic [4+2]-cycloadducts. The experiments are supported by high-level DFT calculations that were also extended to related hetero-Diels-Alder reactions of other nitroso compounds and thioketones. These calculations reveal that the title cycloadditions are kinetically controlled processes confirming the role of thioketones as superdienophiles. The computational study was also applied to the experimentally studied thiochalcone dimerization, and showed that the 1,2-dithiin and 2H-thiopyran isomers are in equilibrium with the monomer. Again, the DFT calculations indicate kinetic control of this process.
Collapse
Affiliation(s)
| | | | - Marcin Jasiński
- Faculty of ChemistryUniversity of ŁódźTamka 1291403ŁódźPoland
| | - Ernst‐Ulrich Würthwein
- Organisch-Chemisches Institut and Center for Multiscale Theory and Computation (CMTC)Westfälische Wilhelms-Universität MünsterCorrensstrasse 4048149MünsterGermany
| | - Heinz Heimgartner
- Department of ChemistryUniversity of ZurichWinterthurerstrasse 1908057ZurichSwitzerland
| | - Reinhold Zimmer
- Institut für Chemie und BiochemieFreie Universität BerlinTakustrasse 314195BerlinGermany
| | - Hans‐Ulrich Reissig
- Institut für Chemie und BiochemieFreie Universität BerlinTakustrasse 314195BerlinGermany
| |
Collapse
|
15
|
Mlostoń G, Jasiński R, Kula K, Heimgartner H. A DFT Study on the Barton-Kellogg Reaction - The Molecular Mechanism of the Formation of Thiiranes in the Reaction between Diphenyldiazomethane and Diaryl Thioketones. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901443] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Grzegorz Mlostoń
- Department of Organic and Applied Chemistry; University of Łódź; Tamka 12 91-403 Łódź Poland
| | - Radomir Jasiński
- Institute of Organic Chemistry & Technology; Cracow University of Technology; Warszawska 24 31-155 Krakow Poland
| | - Karolina Kula
- Institute of Organic Chemistry & Technology; Cracow University of Technology; Warszawska 24 31-155 Krakow Poland
| | - Heinz Heimgartner
- Department of Chemistry; University of Zurich; Winterthurerstrasse 190 8057 Zurich Switzerland
| |
Collapse
|
16
|
Lichman BR, O'Connor SE, Kries H. Biocatalytic Strategies towards [4+2] Cycloadditions. Chemistry 2019; 25:6864-6877. [DOI: 10.1002/chem.201805412] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 01/17/2019] [Indexed: 11/05/2022]
Affiliation(s)
- Benjamin R. Lichman
- Department of Biological Chemistry; The John Innes Centre; Colney Lane Norwich UK
- Current address: Department of Biology; University of York; York YO10 5YW UK
| | - Sarah E. O'Connor
- Department of Biological Chemistry; The John Innes Centre; Colney Lane Norwich UK
| | - Hajo Kries
- Independent Junior Research Group, Biosynthetic Design of Natural Products; Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute (HKI Jena); Beutenbergstr. 11a 07745 Jena Germany
| |
Collapse
|
17
|
Trost BM, Wang Y. A Deprotonation Approach to the Unprecedented Amino‐Trimethylenemethane Chemistry: Regio‐, Diastereo‐, and Enantioselective Synthesis of Complex Amino Cycles. Angew Chem Int Ed Engl 2018; 57:11025-11029. [DOI: 10.1002/anie.201805876] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Indexed: 01/07/2023]
Affiliation(s)
- Barry M. Trost
- Department of Chemistry Stanford University Stanford CA 94305-5080 USA
| | - Youliang Wang
- Department of Chemistry Stanford University Stanford CA 94305-5080 USA
| |
Collapse
|
18
|
Trost BM, Wang Y. A Deprotonation Approach to the Unprecedented Amino‐Trimethylenemethane Chemistry: Regio‐, Diastereo‐, and Enantioselective Synthesis of Complex Amino Cycles. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201805876] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Barry M. Trost
- Department of Chemistry Stanford University Stanford CA 94305-5080 USA
| | - Youliang Wang
- Department of Chemistry Stanford University Stanford CA 94305-5080 USA
| |
Collapse
|
19
|
Marzo L, Pagire SK, Reiser O, König B. Photokatalyse mit sichtbarem Licht: Welche Bedeutung hat sie für die organische Synthese? Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201709766] [Citation(s) in RCA: 306] [Impact Index Per Article: 51.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Leyre Marzo
- Institut für Organische Chemie; Universität Regensburg; Universitätsstraße 31 93053 Regensburg Deutschland
| | - Santosh K. Pagire
- Institut für Organische Chemie; Universität Regensburg; Universitätsstraße 31 93053 Regensburg Deutschland
| | - Oliver Reiser
- Institut für Organische Chemie; Universität Regensburg; Universitätsstraße 31 93053 Regensburg Deutschland
| | - Burkhard König
- Institut für Organische Chemie; Universität Regensburg; Universitätsstraße 31 93053 Regensburg Deutschland
| |
Collapse
|
20
|
Marzo L, Pagire SK, Reiser O, König B. Visible-Light Photocatalysis: Does It Make a Difference in Organic Synthesis? Angew Chem Int Ed Engl 2018; 57:10034-10072. [PMID: 29457971 DOI: 10.1002/anie.201709766] [Citation(s) in RCA: 1127] [Impact Index Per Article: 187.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 01/12/2018] [Indexed: 12/12/2022]
Abstract
Visible-light photocatalysis has evolved over the last decade into a widely used method in organic synthesis. Photocatalytic variants have been reported for many important transformations, such as cross-coupling reactions, α-amino functionalizations, cycloadditions, ATRA reactions, or fluorinations. To help chemists select photocatalytic methods for their synthesis, we compare in this Review classical and photocatalytic procedures for selected classes of reactions and highlight their advantages and limitations. In many cases, the photocatalytic reactions proceed under milder reaction conditions, typically at room temperature, and stoichiometric reagents are replaced by simple oxidants or reductants, such as air, oxygen, or amines. Does visible-light photocatalysis make a difference in organic synthesis? The prospect of shuttling electrons back and forth to substrates and intermediates or to selectively transfer energy through a visible-light-absorbing photocatalyst holds the promise to improve current procedures in radical chemistry and to open up new avenues by accessing reactive species hitherto unknown, especially by merging photocatalysis with organo- or metal catalysis.
Collapse
Affiliation(s)
- Leyre Marzo
- Institut für Organische Chemie, Universität Regensburg, Universitätsstrasse 31, 93053, Regensburg, Germany
| | - Santosh K Pagire
- Institut für Organische Chemie, Universität Regensburg, Universitätsstrasse 31, 93053, Regensburg, Germany
| | - Oliver Reiser
- Institut für Organische Chemie, Universität Regensburg, Universitätsstrasse 31, 93053, Regensburg, Germany
| | - Burkhard König
- Institut für Organische Chemie, Universität Regensburg, Universitätsstrasse 31, 93053, Regensburg, Germany
| |
Collapse
|
21
|
Wang S, Rodríguez-Escrich C, Pericàs MA. Catalytic Asymmetric [8+2] Annulation Reactions Promoted by a Recyclable Immobilized Isothiourea. Angew Chem Int Ed Engl 2017; 56:15068-15072. [DOI: 10.1002/anie.201707341] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Indexed: 12/12/2022]
Affiliation(s)
- Shoulei Wang
- Institute of Chemical Research of Catalonia (ICIQ); The Barcelona Institute of Science and Technology; Av. Països Catalans 16 43007 Tarragona Spain
| | - Carles Rodríguez-Escrich
- Institute of Chemical Research of Catalonia (ICIQ); The Barcelona Institute of Science and Technology; Av. Països Catalans 16 43007 Tarragona Spain
| | - Miquel A. Pericàs
- Institute of Chemical Research of Catalonia (ICIQ); The Barcelona Institute of Science and Technology; Av. Països Catalans 16 43007 Tarragona Spain
- Departament de Química Inorgànica i Orgànica; Universitat de Barcelona; 08080 Barcelona Spain
| |
Collapse
|
22
|
Wang S, Rodríguez-Escrich C, Pericàs MA. Catalytic Asymmetric [8+2] Annulation Reactions Promoted by a Recyclable Immobilized Isothiourea. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201707341] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Shoulei Wang
- Institute of Chemical Research of Catalonia (ICIQ); The Barcelona Institute of Science and Technology; Av. Països Catalans 16 43007 Tarragona Spain
| | - Carles Rodríguez-Escrich
- Institute of Chemical Research of Catalonia (ICIQ); The Barcelona Institute of Science and Technology; Av. Països Catalans 16 43007 Tarragona Spain
| | - Miquel A. Pericàs
- Institute of Chemical Research of Catalonia (ICIQ); The Barcelona Institute of Science and Technology; Av. Països Catalans 16 43007 Tarragona Spain
- Departament de Química Inorgànica i Orgànica; Universitat de Barcelona; 08080 Barcelona Spain
| |
Collapse
|
23
|
Anandkumar D, Rajakumar P. Synthesis and anticancer activity of bile acid dendrimers with triazole as bridging unit through click chemistry. Steroids 2017. [PMID: 28648586 DOI: 10.1016/j.steroids.2017.06.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Triazole-based novel dendrimers with bile acid surface groups have been synthesized through click chemistry by divergent approach and characterized by spectral data. All the dendrimers exhibit excellent anticancer activity. Higher-generation dendrimers exhibit better anticancer activity than the lower-generation dendrimers.
Collapse
Affiliation(s)
- Devaraj Anandkumar
- Department of Organic Chemistry, University of Madras, Guindy Campus, Chennai 600025, TamilNadu, India
| | - Perumal Rajakumar
- Department of Organic Chemistry, University of Madras, Guindy Campus, Chennai 600025, TamilNadu, India.
| |
Collapse
|
24
|
Vilhena FS, Bickelhaupt FM, Carneiro JWM. Regio- and Stereoselectivity in 1,3-Dipolar Cycloadditions: Activation Strain Analyses for Reactions of Hydrazoic Acid with Substituted Alkenes. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700577] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Felipe S. Vilhena
- Department of Inorganic Chemistry; Universidade Federal Fluminense (UFF); Outeiro de São João Batista, s/n 24020-141 Niterói Rio de Janeiro Brazil
| | - F. Matthias Bickelhaupt
- Department of Theoretical Chemistry and Amsterdam Center for Multiscale Modeling (ACMM); Vrije Universiteit Amsterdam; De Boelelaan 1083 1081 HV Amsterdam Netherlands
- Institute of Molecules and Materials (IMM); Radboud University; Heyendaalseweg 135 6525 AJ Nijmegen Netherlands
| | - José W. M. Carneiro
- Department of Inorganic Chemistry; Universidade Federal Fluminense (UFF); Outeiro de São João Batista, s/n 24020-141 Niterói Rio de Janeiro Brazil
| |
Collapse
|
25
|
Lin CI, McCarty RM, Liu HW. The Enzymology of Organic Transformations: A Survey of Name Reactions in Biological Systems. Angew Chem Int Ed Engl 2017; 56:3446-3489. [PMID: 27505692 PMCID: PMC5477795 DOI: 10.1002/anie.201603291] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Indexed: 01/05/2023]
Abstract
Chemical reactions that are named in honor of their true, or at least perceived, discoverers are known as "name reactions". This Review is a collection of biological representatives of named chemical reactions. Emphasis is placed on reaction types and catalytic mechanisms that showcase both the chemical diversity in natural product biosynthesis as well as the parallels with synthetic organic chemistry. An attempt has been made, whenever possible, to describe the enzymatic mechanisms of catalysis within the context of their synthetic counterparts and to discuss the mechanistic hypotheses for those reactions that are currently active areas of investigation. This Review has been categorized by reaction type, for example condensation, nucleophilic addition, reduction and oxidation, substitution, carboxylation, radical-mediated, and rearrangements, which are subdivided by name reactions.
Collapse
Affiliation(s)
- Chia-I Lin
- Division of Chemical Biology and Medicinal Chemistry, College of Pharmacy, and Department of Chemistry, University of Texas at Austin, Austin, TX, 78731, USA
| | - Reid M McCarty
- Division of Chemical Biology and Medicinal Chemistry, College of Pharmacy, and Department of Chemistry, University of Texas at Austin, Austin, TX, 78731, USA
| | - Hung-Wen Liu
- Division of Chemical Biology and Medicinal Chemistry, College of Pharmacy, and Department of Chemistry, University of Texas at Austin, Austin, TX, 78731, USA
| |
Collapse
|
26
|
Lin C, McCarty RM, Liu H. Die Enzymologie organischer Umwandlungen: Namensreaktionen in biologischen Systemen. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201603291] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Chia‐I. Lin
- Division of Chemical Biology and Medicinal Chemistry College of Pharmacy, and Department of Chemistry University of Texas at Austin Austin TX 78731 USA
| | - Reid M. McCarty
- Division of Chemical Biology and Medicinal Chemistry College of Pharmacy, and Department of Chemistry University of Texas at Austin Austin TX 78731 USA
| | - Hung‐wen Liu
- Division of Chemical Biology and Medicinal Chemistry College of Pharmacy, and Department of Chemistry University of Texas at Austin Austin TX 78731 USA
| |
Collapse
|
27
|
Gulías M, Mascareñas JL. Metallkatalysierte Anellierungen durch Aktivierung und Spaltung von C-H-Bindungen. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201511567] [Citation(s) in RCA: 114] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Moisés Gulías
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) und Departamento de Química Orgánica, 15782; Universidade de Santiago de Compostela; Spanien
| | - José Luis Mascareñas
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) und Departamento de Química Orgánica, 15782; Universidade de Santiago de Compostela; Spanien
| |
Collapse
|
28
|
Gulías M, Mascareñas JL. Metal-Catalyzed Annulations through Activation and Cleavage of C−H Bonds. Angew Chem Int Ed Engl 2016; 55:11000-19. [DOI: 10.1002/anie.201511567] [Citation(s) in RCA: 406] [Impact Index Per Article: 50.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2015] [Revised: 02/17/2016] [Indexed: 12/27/2022]
Affiliation(s)
- Moisés Gulías
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Orgánica, 15782; Universidade de Santiago de Compostela; Spain
| | - José Luis Mascareñas
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Orgánica, 15782; Universidade de Santiago de Compostela; Spain
| |
Collapse
|
29
|
Karakus N, Demirel M. The trans–cis and the azide–tetrazole ring-chain isomerization of 2-azido-1,3-azoles: Quantum chemical study. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2015.03.041] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
30
|
Bolje A, Urankar D, Košmrlj J. Synthesis and NMR Analysis of 1,4-Disubstituted 1,2,3-Triazoles Tethered to Pyridine, Pyrimidine, and Pyrazine Rings. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403100] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
31
|
Burger K, Schickaneder H, Thenn W, Ebner G, Zettl C. Reaktionen mit Hexafluoracetonazin, XIII. Regiochemie der gemischten „cris-cross”︁-Cycloaddition. ACTA ACUST UNITED AC 2014. [DOI: 10.1002/jlac.197619761203] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
32
|
Abu-Eittah RH, El-Taher S, Hassan WM, Noamaan MA. A structural study on the azide–tetrazole equilibrium in the azidobenzothiazole system. DFT-treatment. COMPUT THEOR CHEM 2014. [DOI: 10.1016/j.comptc.2014.01.024] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
33
|
Liu CY, Li Y, Ding JY, Dong DW, Han FS. The development of copper-catalyzed aerobic oxidative coupling of H-tetrazoles with boronic acids and an insight into the reaction mechanism. Chemistry 2014; 20:2373-81. [PMID: 24449340 DOI: 10.1002/chem.201302857] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2013] [Revised: 11/12/2013] [Indexed: 12/19/2022]
Abstract
The development of a highly efficient and practical protocol for the direct C-N coupling of H-tetrazole and boronic acid was presented. A careful and patient optimization of a variety of reaction parameters revealed that this conventionally challenge reaction could indeed proceed efficiently in a very simple system, that is, just by stirring the tetrazoles and boronic acids under oxygen in the presence of different Cu(I) or Cu(II) salts with only 5 mol % loading in DMSO at 100 °C. Most significantly, the reaction could proceed very smoothly in a regiospecific manner to afford the 2,5-disubstituted tetrazoles in high to excellent yields. A mechanistic study revealed that both tetrazole and DMSO are crucial for the generation of catalytically active copper species in the reaction process in addition to their role as reactant and solvent, respectively. It is demonstrated that in the reaction cycle, the Cu(I) catalyst could be oxidized to Cu(II) by oxygen to form a [CuT2D] complex (T = tetrazole anion; D = DMSO) through an oxidative copper amination reaction. The Cu(II) complex thus formed was confirmed to be the real catalytically active copper species. Namely, the Cu(II) complex disproportionates to aryl Cu(III) and Cu(I) in the presence of boronic acid. Facile elimination of the Cu(III) species delivers the C-N-coupled product. The results presented herein not only provide a reliable and efficient protocol for the synthesis of 2,5-disubstituted tetrazoles, but most importantly, the mechanistic results would have broad implications for the de novo design and development of new methods for Cu-catalyzed coupling reactions.
Collapse
Affiliation(s)
- Chao-You Liu
- Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin 130022 (China); The University of Chinese Academy of Sciences, Beijing 100864 (China)
| | | | | | | | | |
Collapse
|
34
|
Rajakumar P, Kannan A, Anandhan R. Synthesis, photophysical and electrochemical properties of 1,2,3-triazolyl bridged ferrocenyl dendrimers through click chemistry. NEW J CHEM 2014. [DOI: 10.1039/c3nj00847a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
35
|
Synthesis and Characterization of Oxadisilole-Fused 1H-Benzo[f]indazoles and 1H-Naphtho[2,3-f]indazoles. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300110] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
36
|
Schacher FH, Rupar PA, Manners I. Funktionale Blockcopolymere: nanostrukturierte Materialien mit neuen Anwendungsmöglichkeiten. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201200310] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
|
37
|
Schacher FH, Rupar PA, Manners I. Functional Block Copolymers: Nanostructured Materials with Emerging Applications. Angew Chem Int Ed Engl 2012; 51:7898-921. [DOI: 10.1002/anie.201200310] [Citation(s) in RCA: 564] [Impact Index Per Article: 47.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2012] [Indexed: 01/07/2023]
|
38
|
Sinha MK, Reany O, Yefet M, Botoshansky M, Keinan E. Bistable Cucurbituril Rotaxanes Without Stoppers. Chemistry 2012; 18:5589-605. [DOI: 10.1002/chem.201103434] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2011] [Indexed: 11/06/2022]
|
39
|
Benfatti F, de Nanteuil F, Waser J. Catalytic enantiospecific [3+2] annulation of aminocyclopropanes with ketones. Chemistry 2012; 18:4844-9. [PMID: 22422718 DOI: 10.1002/chem.201103971] [Citation(s) in RCA: 100] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2011] [Revised: 02/04/2012] [Indexed: 11/11/2022]
Abstract
An almost familiar ring: The first enantiospecific [3+2] annulation of donor-acceptor aminocyclopropanes with ketones is reported (see scheme; Phth=phthaloyl). The reaction is catalysed by tin(IV) chloride (5 mol %) at -78 °C and gives aminotetrahydrofurans bearing a quaternary C5 atom in high yield, diastereoselectivity and enantiospecificity (see scheme).
Collapse
Affiliation(s)
- Fides Benfatti
- Laboratory of Catalysis and Organic Synthesis, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 4306, 1015 Lausanne, Switzerland
| | | | | |
Collapse
|
40
|
Bu HB, Götz G, Reinold E, Vogt A, Schmid S, Segura JL, Blanco R, Gómez R, Bäuerle P. Efficient post-polymerization functionalization of conducting poly(3,4-ethylenedioxythiophene) (PEDOT) via ‘click’-reaction. Tetrahedron 2011. [DOI: 10.1016/j.tet.2010.12.022] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
41
|
Bai SQ, Young DJ, Hor TSA. Nitrogen-Rich Azoles as Ligand Spacers in Coordination Polymers. Chem Asian J 2011; 6:292-304. [DOI: 10.1002/asia.201000698] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2010] [Indexed: 11/12/2022]
|
42
|
Noack R, Schwetlick K. Cycloadditionen mit Isocyanaten - Reaktionsmöglichkeiten, Kinetik, Mechanismen. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/zfch.19860260402] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
43
|
Oh CH, Yi HJ, Lee JH, Lim DH. Stereocontrolled synthesis of oxygen-bridged polycycles via intermolecular [3+2] cyclization of platinum-bound pyrylium with alkenes. Chem Commun (Camb) 2010; 46:3007-9. [PMID: 20386850 DOI: 10.1039/c001495h] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
2-(3-Benzyloxy)prop-1-ynyl)benzaldehyde with PtCl(2) in toluene would form Pt-pyryliums that underwent [3+2] cycloaddition with alkenes to the oxygen-bridged (5H-benzo[7]annulen-5-ylidene)platinum(ii) intermediates with good stereoselectivities. Their tandem rearrangement afforded diverse types of polycycles depending on the electronic nature of the alkenes.
Collapse
Affiliation(s)
- Chang Ho Oh
- Department of Chemistry, Hanyang University, Haengdang-17, Sungdong-Gu, Seoul 133-791, Korea.
| | | | | | | |
Collapse
|
44
|
Sisson A, Steinhilber D, Rossow T, Welker P, Licha K, Haag R. Biokompatible funktionalisierte zellgängige Polyglycerinmikrogele. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200901583] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
45
|
Sisson A, Steinhilber D, Rossow T, Welker P, Licha K, Haag R. Biocompatible Functionalized Polyglycerol Microgels with Cell Penetrating Properties. Angew Chem Int Ed Engl 2009; 48:7540-5. [DOI: 10.1002/anie.200901583] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
46
|
Megiatto J, Schuster D. “Click” Methodology for Synthesis of Functionalized [3]Catenanes: Toward Higher Interlocked Structures. Chemistry 2009; 15:5444-8. [DOI: 10.1002/chem.200900536] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
47
|
Camponovo J, Ruiz J, Cloutet E, Astruc D. New Polyalkynyl Dendrons and Dendrimers: “Click” Chemistry with Azidomethylferrocene and Specific Anion and Cation Electrochemical Sensing Properties of the 1,2,3-Triazole-Containing Dendrimers. Chemistry 2009; 15:2990-3002. [DOI: 10.1002/chem.200801999] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
48
|
Oh CH, Lee JH, Lee SM, Yi HJ, Hong CS. Divergent insertion reactions of Pt-carbenes generated from [3+2] cyclization of platinum-bound pyrylliums. Chemistry 2009; 15:71-4. [PMID: 19035591 DOI: 10.1002/chem.200801887] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Chang Ho Oh
- Department of Chemistry, Hanyang University, Sungdong-Gu, Seoul 133-791, Korea.
| | | | | | | | | |
Collapse
|
49
|
Langhals H, Obermeier A. A Click Reaction for Fluorescent Labelling: Application of the 1,3-Dipolar Cycloaddition Reaction. European J Org Chem 2008. [DOI: 10.1002/ejoc.200800805] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
50
|
Oh C, Lee J, Lee S, Kim J, Hong C. Intramolecular Huisgen-Type Cyclization of Platinum-Bound Pyrylium Ions with Alkenes and Subsequent Insertion into a Benzylic CH Bond. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200802425] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|