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Publications of Dr.
Török
- M. Abid, L. Teixeira, B.
Török: Triflic Acid-Catalyzed Highly Stereoselective Friedel-Crafts Aminoalkylation of Indoles and Pyrroles.
Org. Lett. 2008, in press.
- S. C. Mhadgut, M. Török, S. Dasgupta, B.
Török: Nature of Proline-Induced Enantiodifferentiation in Asymmetric Pd Catalyzed Hydrogenations: Is the Catalyst Really Indifferent?
Catal. Lett. 2008, in press.
- S. M. Landge, B.
Török: Synthesis of Condensed Benzo[N,N]-Heterocycles by Microwave-Assisted Solid Acid Catalysis.
Catal. Lett. 2008, in press.
- M. Abid, O. De Paolis, B.
Török: A Novel One-Pot Synthesis of N-Acylindoles from Primary Aromatic Amides.
Synlett 2008, 410.
- S. Dasgupta, B.
Török: Application of Clay Catalysts in Organic Synthesis. A Review.
Org. Prep. Proced. Int. 2008,
40, 1.
- S. M. Landge, D. A. Borkin, B.
Török: Microwave-Assisted Preparation of Trifluoroacetaldehyde (Fluoral): Isolation and Applications.
Tetrahedron Lett. 2007,
48, 5161.
- S. M. Landge, V. Atanassova, M. Thimmaiah, B.
Török: Microwave-Assisted Oxidative Coupling of Amines to Imines on Solid Acid Catalysts.
Tetrahedron Lett. 2007,
48, 5161.
- S. M. Landge, A. Schmidt, V. Outerbridge, B.
Török: Synthesis of Pyrazoles by a One-Pot Tandem Cyclization-Dehydrogenation Approach on Pd/C/K-10 Catalyst.
Synlett 2007, 1600.
- M. Abid, M. Savolainen, S. Landge, J. Hu, G. K. S. Prakash, G. A. Olah, B.
Török: Synthesis of Trifluoromethyl-Imines by Solid Acid/Superacid Catalyzed Microwave Assisted Approach..
J. Fluorine Chem. 2007,
128, 587.
- M. Abid, L. Teixeira, B.
Török: Triflic acid controlled successive annelation of aromatic sulfonamides: An efficient one-pot synthesis of N-sulfonyl pyrroles, indoles and carbazoles.
Tetrahedron Lett. 2007,
48, 5377.
- M. Abid, A. Spaeth, B.
Török: Solvent-Free Solid Acid Catalyzed Electrophilic Annelations: A New Green Approach for the Synthesis of Substituted Five-Membered N-Heterocycles.
Adv. Synth. Catal. 2006,
348, 2191.
- M. Abid, S. M. Landge, B.
Török: An Efficient and Rapid Synthesis of N-substituted Pyrroles by Microwave Assisted Solid Acid Catalysis.
Org. Prep. Proced. Int. 2006,
35, 495.
- M. Török, M. Abid, S. C. Mhadgut, B.
Török: A New Class of Organofluorine Inhibitors
of Amyloid Fibrillogenesis.
Biochemistry 2006,
45 , 5377.
- S. C. Mhadgut, M. Török, J. Esquibel, B.
Török: Highly Asymmetric Heterogeneous
Catalytic Hydrogenation of Isophorone on Proline
Modified Base-Supported Palladium Catalysts.
J. Catal. 2006, 238, 441.
- B. Török, M. Abid,
G. London, J. Esquibel, M. Török, S. C. Mhadgut,
P. Yan, G. K. S. Prakash: Highly Enantioselective
Organocatalytic Hydroxyalkylation of Indoles with
ethyl trifluoropyruvate.
Angew. Chem. Int. Ed. 2005, 44 , 3086.
- G. A. Olah, T. Matthew, A. Goeppert, B.
Török, I. Bucsi, X.Y. Li, Q. Wang, E. Marinez,
P. Batamack, R. Aniszfeld, G.K.S. Prakash: Ionic
Liquid and Solid HF Equivalent Amine-Poly(Hydrogen
Fluoride) Complexes Effecting Efficient Environmentally
Friendly Isobutane-Isobutylene Alkylation.
J. Am. Chem. Soc. 2005, 127, 5964.
- M. Abid, B. Török: Synthesis
of N-Heteroaryl-Trifluoromethyl-Hydroxyl Alkanoic
Acid Esters by Highly Efficient Solid Acid Catalyzed
Hydroxyalkylation of Indoles and Pyrroles with Activated
Trifluoromethyl Ketones.
Adv. Synth. Catal. 2005, 347 , 1797.
- S. C. Mhadgut,.K. Palaniappan, M. Thimmaiah,
S. A. Hackney, B. Török, J. Liu:
A Metal Nanoparticle-Based Supramolecular Approach
for Aqueous Biphasic Reactions.
Chem. Commun 2005, 3207.
- M. Abid, B. Török: Cinchona
Alkaloid Induced Chiral Discrimination for the Determination
of Enantiomeric Composition of alpha-Trifluoro-methylated-Hydroxyl
Compounds by 19F NMR Spectroscopy.
Tetrahedron:Asymmetry 2005, 16, 1547.
- S. C. Mhadgut, I. Bucsi, M. Török, B.
Török: Sonochemical Asymmetric Hydrogenation
of Isophorone on Proline Modified Pd/Al2O3 Catalysts.
Chem. Commun. 2004, 984.
- B. Török, G. K. S. Prakash:
Synthesis of Chiral Trifluoromethylated Amines by
Palladium-Catalyzed Diastereoselective Hydrogenation-Hydrogenolysis
Approach.
Adv. Synth. Catal. 2003, 45 , 165.
- G. K. S. Prakash, P. Yan, B. Török,
G. A. Olah: Superacid Catalyzed Hydroxyalkylation
of Aromatics with Ethyl Trifluoropyruvate: A New
Synthetic Route to Mosher’s Acid Analogs.
Synlett 2003, 527.
- G.K. S. Prakash, P. Yan, B. Török,
G. A. Olah: Superacidic trifuoromethanesulfonic
acid-induced cycli-acyalkylation of aromatics.
Catal. Lett. 2003,
87 , 109.
- G. K. S. Prakash, P. Yan, B. Török,
I. Bucsi, M. Tanaka, G. A. Olah: Gallium(III) Trifluoro-methanesulfonate:
A Water Tolerant, Reusable Lewis Acid Catalyst for
Friedel-Crafts Reactions.
Catal. Lett. 2003,
85 , 1.
- G. A. Olah, B. Török, J. P.
Joschek, I. Bucsi, P. M. Estevez, G. Rasul, G. K.
S. Prakash: Efficient Chemoselective Carboxylation
of Aromatics with Carbon Dioxide-Al2Cl6/Al System
to Arylcarboxylic Acids.
J. Am. Chem. Soc. 2002,
124 , 11379.
- I. Bucsi, B. Török, A. Iza Marco,
G. Rasul, G. K. S. Prakash, G. A. Olah: Stable Dialkyl
Ether-Poly(Hydrogen Fluoride) Complexes. Dimethyl
Ether-Poly(Hydrogen Fluoride), a New, Convenient
and Effective Fluorinating Agent
J. Am. Chem. Soc. 2002,
124 , 7728.
- B. Török, K. Balázsik, M. Török,
K. Felföldi, M. Bartók: Enantiodifferentiation in
Cinchona-Modified Platinum-Catalyzed Sonochemical
Hydrogenations
Catal. Lett. 2002,
81 , 55.
- M. Bartók, B. Török, K. Balázsik,
T, Bartók: Enantioselective Hydrogenation of Ethyl
Pyruvate over Cinchonine and alpha-Isocinchonine
Modified Platinum Catalysts
Catal. Lett. 2001,
73 , 127.
- B. Török, K. Balázsik, K. Felföldi,
M. Bartók: Asymmmetric Reactions in Sonochemistry.
Ultrasonics Sonochem. 2001,
8 , 191
- Gy. Szöllösi, I. Kun, B. Török,
M. Bartók: Ultrasonics in Chemoselective Heterogeneous
Metal Catalytic Processes. Sonochemical Hydrogenation
of ?,?-Unsaturated Carbonyl Compounds over Platinum
Catalysts.
Ultrasonics Sonochem. 2000,
7 , 173.
- I. Pálinkó, Á. Kukovecz, B. Török,
T. Körtvélyesi: On the Mechanism of a Modified Perkin
Condensation Leading to alpha-Phenylcinnamic Acid
Stereoisomers - Experiments and Molecular Modelling.
Monat. Chem. 2000,
131 , 1097.
- B. Török, M. Török, L. I. Horváth,
I. Pálinkó, I. Kiricsi, Á. Molnár: New Aspects of
Heteropoly Acid Catalysis in Organic Solvents: Solvent
Effect on the Catalytic Activity and ESR Characterization
of the Solvent-Heteropoly Anion Interactions.
Inorg. Chim. Acta 2000,
298 , 77.
- K. Felföldi, K. Szori, B. Török,
M. Bartók: Sonochemical Hydrosilylation of 2-Substituted
Cyclohexanones in the Presence of Wilkinson Complex.
Ultrasonics Sonochem. 2000,
7 , 15.
- B. Török, K. Balázsik, I. Dékány,
M. Bartók: Preparation and Characterization of New
Chirally Modified Laponites.
Mol. Cryst. Liquid Cryst. 2000,
341 , 339.
- B. Török, K. Balázsik, M. Török,
Gy. Szöllösi, M. Bartók: Asymmetric Sonochemical
Hydrogenation of alpha-Ketoesters over Cinchona-Modified
Platinum Catalysts.
Ultrasonics Sonochem. 2000,
7 , 151.
- B. Török, K. Balázsik , K. Felföldi,
M. Bartók: Effect of Medium and Coacid Acidity on
the Cinchona-Modified Pt-Catalyzed Enantioselective
Hydrogenations.
Stud. Surf. Sci. Catal. 2000,
130 , 3381.
- K. Balázsik, K. Szöri, K. Felföldi, B.
Török, M. Bartók: Asymmetric Synthesis
of Alkyl 5-oxo-tetrahydrofuran-2-carboxylates by
Enantioselective Hydrogenation of Dialkyl 2-Oxoglutarates
over Cinchona Modified Pt/Al2O3 Catalysts
Chem. Commun. 2000, 555.
- B. Török, I. Kiricsi, Á. Molnár,
G. A. Olah: Acidity and Catalytic Activity of Nafion-H/Silica
Nanocomposite Catalyst and a Comparison with Silica-Supported
Perfluorinated Acids
J. Catal. 2000,
193, 132.
- A. Fási, J. T. Kiss, B. Török,
I. Pálinkó: The selectivity and activity determining
roles of carbonaceous species and metal-metal oxide
interface in metal-catalyzed hydrogenation and isomerization
reactions.
Applied Catal. A 2000,
200, 187.
- I. Kun, B. Török, K. Felföldi,
M. Bartók: Asymmetric Hydrogenation of 2-methyl-2-pentenoic
Acid over Cinchona Modified Pd/Al2O3 Catalysts
Applied Catal. A 2000,
203, 71.
- B. Török, G. London, M. Bartók:
Reduction of Carbonyl Compounds to Hydrocarbons
by Catalytic Hydrogenation: A Novel One-Pot Method
Using Pt/K-10 Montmorillonite Catalyst.
Synlett, 2000, 631.
- K. Balázsik, B. Török, G. Szakonyi,
M. Bartók: Enantioselective Hydrogenations over
K-10 Montmorillonite-Supported Noble Metal Catalysts
with Anchored Modifier.
Applied Catal. A 1999,
182, 53.
- K. Balázsik, B. Török, K. Felföldi,
M. Bartók: Sonochemical Enantioselective Hydrogenation
of Trifluoromethyl Ketones over Platinum Catalysts.
Ultrasonics Sonochem. 1999,
5, 149.
- B. Török, M. Bartók, I. Dékány:
The Structure of Chiral Phenylethyl-Ammonnium Montmorillonites
in Ethanol-Toluene Mixtures.
Colloid & Polymer Sci., 1999,
277, 340.
- B. Török, K. Balázsik, Gy. Szöllösi,
K. Felföldi, I. Kun, M. Bartók: Ultrasonics in Heterogeneous
Metal Catalysis. Sonochemical Chemo- and Enantioselective
Hydrogenations over Supported Platinum Catalysts.
Ultrasonics Sonochem. 1999,
6, 97.
- B. Török, K. Balázsik, Gy. Szöllösi,
K. Felföldi, M. Bartók: Ultrasonics in Asymmetric
Syntheses. Sonochemical Enantioselective Hydrogenation
of Prochiral C=O Groups over Platinum Catalysts
Chirality 1999,
11, 470.
- K. Balázsik, B. Török, I. Kiricsi,
I. Dékány, M. Bartók: Characterization of Cinchonidine
Doped Montmorillonite Supported Noble Metal Catalysts
by thermoanalytical Methods
J. Therm. Anal. 1999,
56 , 337.
- I. Pálinkó, B. Török, G. K.
S. Prakash, G. A. Olah: Dehydration-Rehydration
Characteristics of Nafion-H, Nafion-H Supported
on Silica and Nafion-H Silica Nanocomposite Catalysts
Studied by Infrared Microscopy.
J. Mol. Structure 1999,
482/483, 29.
- B. Török, I. Pálinkó, Á. Molnár,
M. Rózsa-Tarjáni: Multinuclear MAS NMR Characterization
of Heteropoly Acids and Their Interaction with 2,3-Butanediol.
J. Mol. Structure 1999,
482/483, 327.
- B. Török, K. Balázsik, I. Kun,
Gy. Szöllösi, G. Szakonyi, M. Bartók: Clay-Supported
Noble Metal Catalysts in Enantioselective Hydrogenations.
Stud. Surf. Sci. Catal. 1999,
125, 555.
- Gy. Szöllösi, I. Kun, B. Török,
M. Bartók: Chemoselective Hydrogenation of C=O Group
in Unsaturated Aldehydes over Clay-Supported Platinum
Catalysts.
Stud. Surf. Sci. Catal. 1999,
125, 523.
- B. Török, K. Felföldi, K. Balázsik,
M. Bartók: New Synthesis of a Useful C3 Chiral Building
Block by Heterogeneous Method: Enantioselective
Hydrogenation of Methylglyoxal 1,1-Dimethyl Acetal
over Cinchona Modified Pt/Al2O3 Catalysts.
Chem. Commun. 1999, 1725.
- G. A. Olah, E. Marinez, B. Török,
G. K. S. Prakash: Acid Catalyzed Isobutane-Isobutylene
Alkylation in Liquid and Supercritical Carbon Dioxide.
Catal. Lett. 1999,
61, 105.
- Á. Molnár, Cs. Keresszegi, B. Török:
Heteropoly Acids Immobilized into a Silica Matrix:
Characterization and Catalytic Applications.
Appl. Catal. A 1999,
189, 217.
- I. Pálinkó, A. Burrichter, G. Rasul, B.
Török, G. K. S. Prakash, G. A. Olah: Protonation
and Ring Closure of Stereoisomeric Alpha-Substituted
Cinnamic Acids in Superacidic Media Studied by 13C
NMR Spectroscopy and Computations.
J. Chem. Soc., Perkin Trans. 2, 1998, 379.
- M. Varga, B. Török, Á. Molnár:
Thermal Stability of Heteropoly Acids and Characterization
of the Water Content in the Keggin Structure.
J. Therm. Anal. 1998,
53, 207.
- B. Török, Á. Molnár: Electrophilic
Transformations Induced by Heteropoly Acids: Applications
and Structural Studies.
Compt. Rend. Acad. Sci. Paris, Serie II c.
1998, 381.
- Á. Molnár, B. Török, I. Bucsi,
A. Földvári: Alkylation of Aromatics with Diols
in Superacidic Media.
Topics in Catal. 1998,
6, 9.
- B. Török, K. Felföldi, G. Szakonyi,
K. Balázsik, M. Bartók: Enantiodifferentiation in
Asymmetric Sonochemical Hydrogenations.
Catal. Lett. 1998,
52, 81.
- B. Török, J. Wölfling, Gy. Schneider,
M. Bartók: Asymmetric Transfer Hydrogenation of
16-Substituted Steroid 17-Ketones in the Presence
of Rhodium(I) Complexes.
React. Kinet. Catal. Lett. 1998,
64, 35.
- Gy. Szöllösi, B. Török, M. Bartók:
Monitoring of Optical Isomers of Chiral Alcohols
and Derivatives by Chiral Gas-Chromatography. Effect
of Derivatization on the Enantiodifferentiation.
Chromatographia 1998,
48, 81.
- Gy. Szöllösi, B. Török, G. Szakonyi,
I. Kun, M. Bartók: Ultarsonic Irradiation as Activity
and Selectivity Improving Factor in the Hydrogenation
of Cinnamaldehyde over Pt/SiO2 Catalysts.
Appl. Catal. A. 1998,
172, 225.
- I. Pálinkó, B. Török, G. K.
S. Prakash, G. A. Olah: Surface Characterization
of Variously Treated Nafion-H, Nafion-H Supported
on Silica and Nafion-H Silica Nanocomposite Catalysts
by Infrared Microscopy.
Applied Catal. A 1998,
174, 147.
- B. Török, Gy. Szöllösi, M. Rózsa-Tarjáni,
M. Bartók: Preparation, Characterization and Application
of Chirally Modified K-10 Montmorillonite Ion-Exchanged
with Chiral Ammonium Salts.
Mol. Cryst. Liquid Cryst. 1998,
311, 289.
- Gy. Szöllösi, B. Török, L. Baranyi,
M. Bartók: Chemoselective Hydrogenation of Cinnamaldehyde
to Cinnamyl Alcohol over Pt/K-10 Catalyst.
J. Catal. 1998,
179, 619.
- I. Pálinkó, P. T. Szabó, B. Török,
Z. Kele, I. Kapocsi: Fragmentation of Cyclobutane
Derivatives upon ,Electron Impact: Transformation
Pathways Elucidated by Various Mass Spectrometric
Methods.
Rapid Commun. Mass Spectrom. 1998,
12, 1.
- M. Bartók, K. Felföldi, B. Török,
T. Bartók: A new cinchona-modified platinum catalyst
for the enantioselective hydrogenation of pyruvate:
the structure of the 1:1 alkaloid-reactant complex.
Chem. Commun. 1998, 2605.
- B. Török, Á. Molnár, N. Balogh,
L. I. Horváth, I. Kiricsi, I. Pálinkó: Homogeneous
Catalysis by Heteropoly Acids: a Redox Transformation
of H4(SiMo12O40( in Electrophilic Reactions.
Appl. Catal. A 1997,
158, L17.
- I. Pálinkó, B. Török: Multiple
Steady-State in the Hydrogenative Ring Opening of
Propylcyclobutane over Rh/SiO2.
Catal. Lett. 1997,
45, 193.
- B. Török, J. T. Kiss, M. Bartók:
Hydrogen Pressure Dependence in the Hydrogenative
Ring Opening of Methylcyclobutane and Methylcyclopentane
over Silica-Supported Pt and Pd Catalysts.
Catal. Lett. 1997,
46, 169.
- T. Beregszászi, B. Török, Á.
Molnár, G. A. Olah, G. K S. Prakash: Friedel-Crafts
Reactions Induced by Heteropoly Acids. Regioselective
Adamantyl Substitution of Aromatic Compounds.
Catal. Lett. 1997,
48, 83.
- B. Török, K. Felföldi, G. Szakonyi,
M. Bartók: Sonochemical Enantioselective Hydrogenation
of Ethyl Pyruvate over Platinum Catalysts
Ultrasonics Sonochem. 1997,
4, 301.
- G. A. Olah, B. Török, T. Shamma, M. Török, G. K. S. Prakash:
Effect of Acid Hydrocarbon Ratio, Temperature and Contact Time on the Isobutane-Isobutylene Alkylation with Trifluoromethanesulfonic Acid.
Catal. Lett. . 1996,
42, 5.
- G. A. Olah, G. K. S. Prakash, B. Török, M. Török:
Solid Acid (Superacid) Catalyzed Regioselective Adamantylation of Substituted Benzenes.
Catal. Lett. 1996,
40, 137.
- I. Pálinkó, G. Horváth, B. Török:
Rearrangement Reactions on EI Ionization of a-Phenylcinnamic Acid Trimethyl Silyl Esters; Practical and Theoretical Aspects.
J. Mass Spectrom. 1996,
31, 823.
- G. A. Olah, P. Batamack, D. Deffieux, B. Török, Q. Wang, Á. Molnár, G. K. S. Prakash:
Acidity Dependence of Trifluoromethanesulfonic Acid Catalyzed Isobutane-Isobutylene Alkylation Modified with Trifluoroacetic Acid or Water.
Applied Catal. A 1996,
146, 107.
- B. Török, I. Pálinkó, Á. Molnár, M. Bartók:
Hydrogen Pressure Dependence in the Ring-Opening Reactions of Substituted Cyclobutanes over Rh/SiO2 Catalyst at Various Temperatures.
J. Catal. 1996,
159, 500.
- B. Török, I. Bucsi, T. Beregszászi, I. Kapocsi, Á. Molnár:
Transformation of Diols in the presence of Heteropoly Acids under Homogeneous and Heterogeneous Conditions.
J. Mol. Catal. 1996,
107, 305.
- B. Török, I. Bucsi, T. Beregszászi, Á. Molnár:
Rearrangements of Oxygen-Containing Compounds Induced by Heteropoly Acids.
Catalysis of Organic Reactions (ed. R.E. Malz), Marcel Dekker, New York, 1996, 393.
- I. Pálinkó, B. Török, G. Tasi, T. Körtvélyesi:
Experimental and Computational Tools for Mechanistic Study: a Modified Perkin Condensation Leading to a-Phenylcinnamic Acid Isomers.
Trends in Organic Chemistry (ECTOC 1) (eds.: Rzepa, H. S., Goodman, J. M.), ISBN 0 85404 899 (CD-ROM), Royal Society of Chemistry,
Marcel Dekker, New York, 1996 (http://www.ch.ic.ac.uk/ectoc/papers/).
- B. Török, Á. Molnár, M. Bartók:
Hydrogenative Ring Opening of Propylcyclopropane over Silica-Supported Pt and Pd Catalysts.
Catal. Lett. 1995,
33, 331.
- B. Török, M. Török, M. Bartók:
Temperature and Hydrogen Pressure Dependence in the Ring Opening of Methylcyclobutane over Pt/SiO2 Catalyst.
Catal. Lett. 1995,
33, 321.
- B. Török, I. Pálinkó, M. Bartók:
Hydrogen Pressure Dependence of the Ring-Opening Reactions of Propylcyclobutane over Pd/SiO2 Catalyst.
Catal. Lett. 1995,
31, 421.
- B. Török, M. Bartók:
Ring-Opening Hydrogenation Reactions of Monoalkyl-Substituted Cyclobutanes over Ni/SiO2 catalyst.
J. Catal. 1995,
151, 315.
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