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Škoch K, Antala J, Císařová I, Štěpnička P. Synthesis and catalytic properties of palladium(II) complexes with P,π-chelating ferrocene phosphinoallyl ligands and their non-tethered analogues. Dalton Trans 2024; 53:8722-8731. [PMID: 38712379 DOI: 10.1039/d4dt00961d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Hybrid phosphines usually combine a phosphine moiety with another heteroatom secondary donor group in their structures while compounds equipped with hydrocarbyl π-donor moieties remain uncommon. This contribution reports the synthesis and structural characterization of the first P/π-allyl-chelating complexes that were obtained using the structurally flexible and redox-active ferrocene unit as the scaffold, viz. [PdCl(R2PfcCHCHCH2-η3:κP)] (1R; R = Ph and cyclohexyl (Cy); fc = ferrocene-1,1'-diyl). These compounds were synthesized from the respective phosphinoferrocene carboxaldehydes R2PfcCHO via reaction with vinylmagnesium bromide to generate 1-(phosphinoferrocenyl)allyl alcohols, which were subsequently acetylated. The resulting allyl acetates reacted smoothly with [Pd2(dba)3]/[Et3NH]Cl (dba = dibenzylideneacetone) to produce the target compounds. Complexes 1R and their nontethered analogues [PdCl(η3-C3H5)(FcPR2-κP)] (5R; Fc = ferrocenyl) were evaluated as pre-catalysts for the Pd-catalysed allylic amination of cinnamyl acetate with aliphatic amines and Suzuki-Miyaura-type cross-coupling of 4-tolylboronic acid with benzoyl chloride. In these reactions, better results were achieved with compounds 5R (particularly with 5Ph), presumably because they form more stable LPd(0)-type catalysts.
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Affiliation(s)
- Karel Škoch
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40 Prague, Czech Republic.
- Institute of Inorganic Chemistry of the Czech Academy of Sciences, Husinec-Řež, Czech Republic
| | - Jakub Antala
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40 Prague, Czech Republic.
| | - Ivana Císařová
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40 Prague, Czech Republic.
| | - Petr Štěpnička
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40 Prague, Czech Republic.
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2
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Kisszékelyi P, Šebesta R. Enolates ambushed - asymmetric tandem conjugate addition and subsequent enolate trapping with conventional and less traditional electrophiles. Beilstein J Org Chem 2023; 19:593-634. [PMID: 37180457 PMCID: PMC10167861 DOI: 10.3762/bjoc.19.44] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 04/21/2023] [Indexed: 05/16/2023] Open
Abstract
Metal enolates are useful intermediates and building blocks indispensable in many organic synthetic transformations. Chiral metal enolates obtained by asymmetric conjugate additions of organometallic reagents are structurally complex intermediates that can be employed in many transformations. In this review, we describe this burgeoning field that is reaching maturity after more than 25 years of development. The effort of our group to broaden possibilities to engage metal enolates in reactions with new electrophiles is described. The material is divided according to the organometallic reagent employed in the conjugate addition step, and thus to the particular metal enolate formed. Short information on applications in total synthesis is also given.
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Affiliation(s)
- Péter Kisszékelyi
- Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University Bratislava, Mlynská dolina, Ilkovičova 6, 842 15 Bratislava, Slovakia
| | - Radovan Šebesta
- Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University Bratislava, Mlynská dolina, Ilkovičova 6, 842 15 Bratislava, Slovakia
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3
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Advanced Application of Planar Chiral Heterocyclic Ferrocenes. INORGANICS 2022. [DOI: 10.3390/inorganics10100152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
This manuscript is reviewing the superior catalytic activity and selectivity of ferrocene ligands in a wide range of reactions: reduction of ketones, hydrogenation of olefins, hydroboration, cycloaddition, enantioselective synthesis of biaryls, Tsuji–Trost allylation. Moreover, the correlation between a ligand structure and its catalytic activity is discussed in this review.
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4
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Mudráková B, Kisszékelyi P, Vargová D, Zakiewicz D, Šebesta R. Asymmetric Tandem Conjugate Addition and Reaction with Carbocations on Unsaturated Heterocycles. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202101485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Brigita Mudráková
- Comenius University in Bratislava Faculty of Natural Sciences Department of Organic Chemistry, Mlynská dolina Ilkovičova 6 842 15 Bratislava Slovakia
| | - Péter Kisszékelyi
- Comenius University in Bratislava Faculty of Natural Sciences Department of Organic Chemistry, Mlynská dolina Ilkovičova 6 842 15 Bratislava Slovakia
| | - Denisa Vargová
- Comenius University in Bratislava Faculty of Natural Sciences Department of Organic Chemistry, Mlynská dolina Ilkovičova 6 842 15 Bratislava Slovakia
| | - Dorota Zakiewicz
- Comenius University in Bratislava Faculty of Natural Sciences Department of Organic Chemistry, Mlynská dolina Ilkovičova 6 842 15 Bratislava Slovakia
| | - Radovan Šebesta
- Comenius University in Bratislava Faculty of Natural Sciences Department of Organic Chemistry, Mlynská dolina Ilkovičova 6 842 15 Bratislava Slovakia
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Abstract
The discovery of ferrocene, [Fe(η5-C5H5)2], seventy years ago has significantly influenced chemical research and provided a key impetus for establishing and rapidly expanding organometallic chemistry, which has continued at a...
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6
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Yoshida K, Yasue R. <i>N</i>-Heterocyclic Carbene Ligands Having Planar Chiral Ferrocene Structure. J SYN ORG CHEM JPN 2020. [DOI: 10.5059/yukigoseikyokaishi.78.28] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Kazuhiro Yoshida
- Department of Chemistry, Graduate School of Science, Chiba University
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7
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Škoch K, Schulz J, Císařová I, Štěpnička P. Pd(II) Complexes with Chelating Phosphinoferrocene Diaminocarbene Ligands: Synthesis, Characterization, and Catalytic Use in Pd-Catalyzed Borylation of Aryl Bromides. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00398] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Karel Škoch
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40 Prague, Czech Republic
| | - Jiří Schulz
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40 Prague, Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40 Prague, Czech Republic
| | - Petr Štěpnička
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40 Prague, Czech Republic
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8
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Vargová D, Némethová I, Plevová K, Šebesta R. Asymmetric Transition-Metal Catalysis in the Formation and Functionalization of Metal Enolates. ACS Catal 2019. [DOI: 10.1021/acscatal.8b04357] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Denisa Vargová
- Comenius University in Bratislava, Faculty of Natural Sciences, Department of Organic Chemistry, Mlynská dolina, Ilkovičova 6, 842 15 Bratislava, Slovak Republic
| | - Ivana Némethová
- Comenius University in Bratislava, Faculty of Natural Sciences, Department of Organic Chemistry, Mlynská dolina, Ilkovičova 6, 842 15 Bratislava, Slovak Republic
| | - Kristína Plevová
- Comenius University in Bratislava, Faculty of Natural Sciences, Department of Organic Chemistry, Mlynská dolina, Ilkovičova 6, 842 15 Bratislava, Slovak Republic
| | - Radovan Šebesta
- Comenius University in Bratislava, Faculty of Natural Sciences, Department of Organic Chemistry, Mlynská dolina, Ilkovičova 6, 842 15 Bratislava, Slovak Republic
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9
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Mravec B, Plevová K, Šebesta R. Copper-catalyzed conjugate addition of in situ formed alkyl boranes to α,β-unsaturated ketones. MONATSHEFTE FUR CHEMIE 2019. [DOI: 10.1007/s00706-018-2309-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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10
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Brüllingen E, Neudörfl JM, Goldfuss B. Enantioselective Cu-catalyzed 1,4-additions of organozinc and Grignard reagents to enones: exceptional performance of the hydrido-phosphite-ligand BIFOP-H. NEW J CHEM 2019. [DOI: 10.1039/c8nj05886e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Enantioselective CuI-catalyzed 1,4-additions and DFT computations concerning the enantioselective mechanism.
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Affiliation(s)
- Eric Brüllingen
- Department of Chemistry
- University of Cologne
- Organic Chemistry
- 50939 Cologne
- Germany
| | - Jörg-Martin Neudörfl
- Department of Chemistry
- University of Cologne
- Organic Chemistry
- 50939 Cologne
- Germany
| | - Bernd Goldfuss
- Department of Chemistry
- University of Cologne
- Organic Chemistry
- 50939 Cologne
- Germany
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11
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Yoshida K, Yasue R. Planar-Chiral Ferrocene-Based N-Heterocyclic Carbene Ligands. Chemistry 2018; 24:18575-18586. [PMID: 30277615 DOI: 10.1002/chem.201803903] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Indexed: 12/18/2022]
Abstract
In the last few decades, N-heterocyclic carbene (NHC) ligands, characterized by attractive features, have increased their presence in transition-metal catalysis. However, chiral NHC ligands still require further design enhancement to realize far more exciting synthetic applications. This review documents advances in chiral NHC ligands, focusing on planar-chiral ferrocene-based NHCs. As the basic shape of most classes of NHC rings is planar, it seems rational to employ a planar-chiral element in the design of chiral NHC ligands.
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Affiliation(s)
- Kazuhiro Yoshida
- Department of Chemistry, Graduate School of Science, Chiba University, Yayoi-cho, Inage-ku, Chiba, 263-8522, Japan.,Molecular Chirality Research Center, Chiba University, Yayoi-cho, Inage-ku, Chiba, 263-8522, Japan
| | - Risa Yasue
- Department of Chemistry, Graduate School of Science, Chiba University, Yayoi-cho, Inage-ku, Chiba, 263-8522, Japan
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12
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Nishii Y. Highly Stereoselective Synthesis Using Donor-Acceptor Cyclopropanes via S N1 or S N2 Mechanism on the Occasion of Cyclopropane Ring-opening. J SYN ORG CHEM JPN 2018. [DOI: 10.5059/yukigoseikyokaishi.76.922] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yoshinori Nishii
- Faculty of Textile Science and Technology, Department of Chemistry and Materials, Applied Molecular Chemistry Course, Shinshu University
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13
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Yao L, Nie H, Zhang D, Wang L, Zhang Y, Chen W, Li Z, Liu X, Zhang S. Chiral Ferrocenyl N,N Ligands with Intramolecular Hydrogen Bonds for Highly Enantioselective Allylic Alkylations. ChemCatChem 2018. [DOI: 10.1002/cctc.201701461] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Lin Yao
- Department of Medicinal Chemistry; School of Pharmacy; Fourth Military Medical University; 169 Changle West Road Xi'an 710032 P.R. China
| | - Huifang Nie
- Department of Medicinal Chemistry; School of Pharmacy; Fourth Military Medical University; 169 Changle West Road Xi'an 710032 P.R. China
| | - Dongxu Zhang
- Department of Medicinal Chemistry; School of Pharmacy; Fourth Military Medical University; 169 Changle West Road Xi'an 710032 P.R. China
| | - Libin Wang
- Department of Medicinal Chemistry; School of Pharmacy; Fourth Military Medical University; 169 Changle West Road Xi'an 710032 P.R. China
| | - Yuhao Zhang
- Department of Medicinal Chemistry; School of Pharmacy; Fourth Military Medical University; 169 Changle West Road Xi'an 710032 P.R. China
| | - Weiping Chen
- Department of Medicinal Chemistry; School of Pharmacy; Fourth Military Medical University; 169 Changle West Road Xi'an 710032 P.R. China
| | - Zhenhua Li
- Department of Chemistry; Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials; Fudan University; 220 Handan Road Shanghai 200433 P.R. China
| | - Xueying Liu
- Department of Medicinal Chemistry; School of Pharmacy; Fourth Military Medical University; 169 Changle West Road Xi'an 710032 P.R. China
| | - Shengyong Zhang
- Department of Medicinal Chemistry; School of Pharmacy; Fourth Military Medical University; 169 Changle West Road Xi'an 710032 P.R. China
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14
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Chen Z, Han L, Tian SK. Activation and Substitution of 1-Ferrocenylalkylamines with Allenones: Application to Three-Component Synthesis of 4-(1-Ferrocenylalkyl)pyrazoles. Org Lett 2017; 19:5852-5855. [DOI: 10.1021/acs.orglett.7b02830] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhixiong Chen
- Hefei National Laboratory
for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Lu Han
- Hefei National Laboratory
for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Shi-Kai Tian
- Hefei National Laboratory
for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
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15
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Takada S, Saito T, Iwata K, Nishii Y. Copper-Catalyzed 1,5-Addition of Grignard reagents to Enantioenriched Donor-Acceptor Cyclopropanes with Inversion. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201600313] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Seijiro Takada
- Department of applied chemistry; faculty of textile science and technology; Shinshu University; Tokida 3-15-1, Uea Nagano 386-8567 Japan
| | - Taichi Saito
- Department of applied chemistry; faculty of textile science and technology; Shinshu University; Tokida 3-15-1, Uea Nagano 386-8567 Japan
| | - Kiitsu Iwata
- Department of applied chemistry; faculty of textile science and technology; Shinshu University; Tokida 3-15-1, Uea Nagano 386-8567 Japan
| | - Yoshinori Nishii
- Department of applied chemistry; faculty of textile science and technology; Shinshu University; Tokida 3-15-1, Uea Nagano 386-8567 Japan
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16
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Pang ZB, Li HF, Wang LL. Synthesis of novel cyclohexanediol-derived chiral phosphite ligands and their application in the Cu-catalyzed conjugate addition of organozinc to cyclic enones. CHINESE CHEM LETT 2016. [DOI: 10.1016/j.cclet.2015.10.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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17
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Weber F, Becker F, Keller M, Hillebrecht H, Brückner R. Aldol Additions of Titanium and Boron Enolates of Achiral and Chiral δ-Lactones to Achiral Model Aldehydes: Simple and Induced Diastereoselectivities. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501128] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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18
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Sorádová Z, Máziková J, Mečiarová M, Šebesta R. Stereoselective domino conjugate addition of Grignard reagents to lactones followed by reaction with activated alkenes catalyzed by ferrocenyl carbene ligands. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.tetasy.2015.01.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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19
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den Hartog T, Huang Y, Fañanás-Mastral M, Meuwese A, Rudolph A, Pérez M, Minnaard AJ, Feringa BL. On the Mechanism of Cu-Catalyzed Enantioselective Extended Conjugate Additions: A Structure-Based Approach. ACS Catal 2014. [DOI: 10.1021/cs501297s] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Tim den Hartog
- Stratingh Institute for Chemistry, University of Groningen
, Nijenborgh 4, 9747
AG
Groningen, The Netherlands
| | - Yange Huang
- Stratingh Institute for Chemistry, University of Groningen
, Nijenborgh 4, 9747
AG
Groningen, The Netherlands
| | - Martín Fañanás-Mastral
- Stratingh Institute for Chemistry, University of Groningen
, Nijenborgh 4, 9747
AG
Groningen, The Netherlands
| | - Anne Meuwese
- Stratingh Institute for Chemistry, University of Groningen
, Nijenborgh 4, 9747
AG
Groningen, The Netherlands
| | - Alena Rudolph
- Stratingh Institute for Chemistry, University of Groningen
, Nijenborgh 4, 9747
AG
Groningen, The Netherlands
| | - Manuel Pérez
- Stratingh Institute for Chemistry, University of Groningen
, Nijenborgh 4, 9747
AG
Groningen, The Netherlands
| | - Adriaan J. Minnaard
- Stratingh Institute for Chemistry, University of Groningen
, Nijenborgh 4, 9747
AG
Groningen, The Netherlands
| | - Ben L. Feringa
- Stratingh Institute for Chemistry, University of Groningen
, Nijenborgh 4, 9747
AG
Groningen, The Netherlands
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20
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Zhou MG, Zhang WZ, Tian SK. Direct enantiospecific substitution of primary α-aminoalkylferrocenes via Lewis acid-catalyzed C–N bond cleavage. Chem Commun (Camb) 2014; 50:14531-4. [DOI: 10.1039/c4cc07196d] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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Maciver EE, Maksymowicz RM, Wilkinson N, Roth PMC, Fletcher SP. Asymmetric Conjugate Addition of Alkylzirconium Reagents to α,β-Unsaturated Lactones. Org Lett 2014; 16:3288-91. [DOI: 10.1021/ol501292x] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Eleanor E. Maciver
- Department of Chemistry,
Chemistry Research Laboratory, University of Oxford, 12 Mansfield
Road, Oxford, OX1 3TA, U.K
| | - Rebecca M. Maksymowicz
- Department of Chemistry,
Chemistry Research Laboratory, University of Oxford, 12 Mansfield
Road, Oxford, OX1 3TA, U.K
| | - Nancy Wilkinson
- Department of Chemistry,
Chemistry Research Laboratory, University of Oxford, 12 Mansfield
Road, Oxford, OX1 3TA, U.K
| | - Philippe M. C. Roth
- Department of Chemistry,
Chemistry Research Laboratory, University of Oxford, 12 Mansfield
Road, Oxford, OX1 3TA, U.K
| | - Stephen P. Fletcher
- Department of Chemistry,
Chemistry Research Laboratory, University of Oxford, 12 Mansfield
Road, Oxford, OX1 3TA, U.K
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22
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Li X, Zhou Z. Enantioseparation performance of novel benzimido-β-cyclodextrins derivatized by ionic liquids as chiral stationary phases. Anal Chim Acta 2014; 819:122-9. [DOI: 10.1016/j.aca.2014.02.020] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2013] [Revised: 02/10/2014] [Accepted: 02/15/2014] [Indexed: 10/25/2022]
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23
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Toma Š, Csizmadiová J, Mečiarová M, Šebesta R. Ferrocene phosphane-heteroatom/carbon bidentate ligands in asymmetric catalysis. Dalton Trans 2014; 43:16557-79. [DOI: 10.1039/c4dt01784f] [Citation(s) in RCA: 81] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A review of chiral ferrocene ligands featuring a combination of phosphorus and other elements as donor atoms in the asymmetric catalysis.
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Affiliation(s)
- Štefan Toma
- Department of Organic Chemistry
- Faculty of Natural Sciences
- Comenius University in Bratislava
- Bratislava, Slovakia
| | - Jana Csizmadiová
- Department of Organic Chemistry
- Faculty of Natural Sciences
- Comenius University in Bratislava
- Bratislava, Slovakia
| | - Mária Mečiarová
- Department of Organic Chemistry
- Faculty of Natural Sciences
- Comenius University in Bratislava
- Bratislava, Slovakia
| | - Radovan Šebesta
- Department of Organic Chemistry
- Faculty of Natural Sciences
- Comenius University in Bratislava
- Bratislava, Slovakia
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