• 2713 Citations
  • 27 h-Index
1973 …2012
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Research Output 1973 2012

  • 2713 Citations
  • 27 h-Index
  • 175 Article
  • 1 Chapter
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Article
2012
9 Citations (Scopus)
Acetylation
Energy barriers
Dimethyl Sulfoxide
Acetic Acid
Nuclear magnetic resonance
2009
2 Citations (Scopus)
hydrazine
Pyrazoles
Microanalysis
Nuclear magnetic resonance
pyridine
2 Citations (Scopus)

Dimethyldioxirane oxidation of exocyclic (E,E)-cinnamylideneketones

Lévai, A., Silva, A. M. S., Santos, C. M. M., Cavaleiro, J. A. S. & Jek, J., 2009, In : Australian Journal of Chemistry. 62, 1, p. 82-89 8 p.

Research output: Article

Bearings (structural)
Stereochemistry
Acetone
Nuclear magnetic resonance
Derivatives
10 Citations (Scopus)
hydrazine
Microanalysis
Acetic Acid
Nuclear magnetic resonance
10 Citations (Scopus)

Synthesis of spiro-1-pyrazolines by the reaction of exocyclic α,β,γ,δ-unsaturated ketones with diazomethane

Lévai, A., Simon, A., Jenei, A., Kálmán, G., Jekó́, J. & Tóth, G., 2009, In : Arkivoc. 2009, 12, p. 161-172 12 p.

Research output: Article

Diazomethane
Ketones
Stereochemistry
Nuclear magnetic resonance
cinnamic aldehyde
2008
2 Citations (Scopus)
Stereochemistry
hydrazine
Nuclear magnetic resonance
Propionic acid
Column chromatography
6 Citations (Scopus)
Thiazepines
Oxazepines
Ketones
Nuclear magnetic resonance
Acids
15 Citations (Scopus)

Synthesis and chemical transformations of benzoxazepines

Lévai, A., 2008, In : Heterocycles. 75, 9, p. 2155-2185 31 p.

Research output: Article

Oxazepines
Derivatives
22 Citations (Scopus)

Synthesis of optically active 1,5-benzothiazepines

Lévai, A. & Kiss-Szikszai, A., máj. 23 2008, In : Arkivoc. 2008, 1, p. 65-86 22 p.

Research output: Article

Bioactivity
Derivatives
1,5-benzothiazepine
2007
1 Citation (Scopus)
Mass spectrometry
Ions
Derivatives
Cations
Chemical analysis
32 Citations (Scopus)
Stereochemistry
Epoxidation
Cyclization
Oxidants
Hydrogen Peroxide
8 Citations (Scopus)
hydrazine
Acetic Acid
Nuclear magnetic resonance
propionic acid
16 Citations (Scopus)

Synthesis of 4-aryl-3(5)-(2-hydroxyphenyl)pyrazoles by reaction of isoflavones and their 4-thio analogues with hydrazine derivatives

Lévai, A., Silva, A. M. S., Cavaleiro, J. A. S., Elguero, J., Alkorta, I. & Jekó́, J., 2007, In : Australian Journal of Chemistry. 60, 12, p. 905-914 10 p.

Research output: Article

hydrazine
Pyrazoles
Isoflavones
Derivatives
Dimethyl Sulfoxide
3 Citations (Scopus)
Thiazepines
Chromans
Toluene
Acetic Acid
Experiments
15 Citations (Scopus)

Synthesis of carboxylic acid derivatives of 2-pyrazolines

Lévai, A. & Jekó́, J., máj. 3 2007, In : Arkivoc. 2007, 1, p. 134-145 12 p.

Research output: Article

hydrazine
Carboxylic Acids
Derivatives
Acetic Acid
Bearings (structural)
2006
8 Citations (Scopus)
Multiple Drug Resistance
Ketones
Colonic Neoplasms
Modulators
Lymphoma
5 Citations (Scopus)

Epoxidation studies of 2-styrylchromones using Jacobsen's catalyst and hydrogen peroxide and iodosylbenzene as oxidants

Santos, C. M. M., Silva, A. M. S., Cavaleiro, J. A. S., Patonay, T. & Lévai, A., szept. 2006, In : Journal of Heterocyclic Chemistry. 43, 5, p. 1319-1326 8 p.

Research output: Article

Epoxidation
Oxidants
Hydrogen Peroxide
Catalysts
Epoxy Compounds
1 Citation (Scopus)
Nuclear magnetic resonance
nuclear magnetic resonance
products
Experiments
1,2-diaminobenzene
6 Citations (Scopus)

Reductive formation of 1,5-benzothiazepines

Lévai, A., Tóth, G., Gondos, T., Jekó́, J. & Brahmbhatt, D. I., júl. 1 2006, In : Heterocycles. 68, 7, p. 1319-1324 6 p.

Research output: Article

2-aminothiophenol
1,5-benzothiazepine
11 Citations (Scopus)
hydrazine
Pyrans
Ketones
Acetic Acid
Nuclear magnetic resonance
27 Citations (Scopus)
hydrazine
Hydrazines
Ketones
Acetic Acid
Spectroscopy
35 Citations (Scopus)

Synthesis of pyrazoles by treatment of 3-benzylchromones, 3-benzylflavones and their 4-thio analogues with hydrazine

Lévai, A., Silva, A. M. S., Cavaleiro, J. A. S., Alkorta, I., Elguero, J. & Jekó́, J., jún. 12 2006, In : European Journal of Organic Chemistry. 12, p. 2825-2832 8 p.

Research output: Article

hydrazine
Pyrazoles
Nuclear magnetic resonance
Dimethyl Sulfoxide
Hydrogen
2005
7 Citations (Scopus)
2,4-bis(4-methoxyphenyl)-1,3,2,4-dithiadiphosphetane-2,4-disulfide
Toluene
9 Citations (Scopus)

Enantioselective reduction of C=N double bond by chromium(II) complexes of natural amino acids

Micskei, K., Holczknecht, O., Marchis, V., Lévai, A., Patonay, T., Zucchi, C. & Pályi, G., 2005, In : Chirality. 17, 9, p. 511-514 4 p.

Research output: Article

Oximes
Enantioselectivity
Chromium
Amino acids
Amino Acids
1 Citation (Scopus)
Electrospray ionization
Ionization
Desorption
Ions
Lasers
9 Citations (Scopus)

Novel and simple synthesis of carboxyl-terminated polyisobutylenes

Nagy, M., Kéki, S., Orosz, L., Deák, G., Herczegh, P., Lévai, A. & Zsuga, M., máj. 17 2005, In : Macromolecules. 38, 10, p. 4043-4046 4 p.

Research output: Article

Polymers
Derivatives
Nitriles
Anhydrides
Aldehydes
22 Citations (Scopus)
Hydrazines
Chalcones
hydrazine
Acetic Acid
Spectroscopy
47 Citations (Scopus)
Hydrazines
Acetic Acid
Nuclear magnetic resonance
15 Citations (Scopus)
Hydrazines
Acetic Acid
Nuclear magnetic resonance spectroscopy
2004
8 Citations (Scopus)

Bromination and azidation reactions of 2-styrylchromones. New syntheses of 4(5)-aryl-5(4)-(2-chromonyl)-1,2,3-triazoles

Silva, A. M. S., Vieira, J. S., Brito, C. M., Cavaleiro, J. A. S., Patonay, T., Lévai, A. & Elguero, J., márc. 2004, In : Monatshefte fur Chemie. 135, 3, p. 293-308 16 p.

Research output: Article

Chromones
Triazoles
Bearings (structural)
Electrons
Sodium Azide
13 Citations (Scopus)
Matrix-Assisted Laser Desorption-Ionization Mass Spectrometry
Ionization
Mass spectrometry
Desorption
Metals
1 Citation (Scopus)

Dimethyldioxirane epoxidation of 3-aryl-1-(3-coumarinyl)propen-1-ones

Lévai, A., Jekó́, J. & Brahmbhatt, D. I., szept. 2004, In : Journal of Heterocyclic Chemistry. 41, 5, p. 707-709 3 p.

Research output: Article

Epoxidation
Epoxy Compounds
dimethyldioxirane
7 Citations (Scopus)

Microwave-induced, solvent-free transformations of benzoheteracyclanones by HTIB (Koser's reagent)

Patonay, T., Lévai, A., Rimán, É. & Varma, R. S., 2004, In : Arkivoc. 2004, 7, p. 183-195 13 p.

Research output: Article

4-Quinolones
Dehydrogenation
Microwaves
Substrates
flavanone
3 Citations (Scopus)
Epoxidation
Epoxy Compounds
dimethyldioxirane
44 Citations (Scopus)

Synthesis and reactivity of styrylchromones

Silva, A. M. S., Pinto, D. C. G. A., Cavaleiro, J. A. S., Lévai, A. & Patonay, T., 2004, In : Arkivoc. 2004, 7, p. 106-123 18 p.

Research output: Article

Heterocyclic Compounds
Bioactivity
Oxygen
26 Citations (Scopus)

Synthesis of exocyclic α,β-unsaturated ketones

Lévai, A., 2004, In : Arkivoc. 2004, 7, p. 15-33 19 p.

Research output: Article

Ketones
Isoflavones
Biological Products
aurone
11 Citations (Scopus)
Heterocyclic Compounds
Ketones
16 Citations (Scopus)

Synthesis of isoflavones

Lévai, A., júl. 2004, In : Journal of Heterocyclic Chemistry. 41, 4, p. 449-460 12 p.

Research output: Article

Isoflavones
54 Citations (Scopus)

Synthesis of pyrazolyl-2-pyrazolines by treatment of 3-(3-aryl-3- oxopropenyl)chromen-4-ones with hydrazine and their oxidation to bis(pyrazoles)

Lévai, A., Silva, A. M. S., Pinto, D. C. G. A., Cavaleiro, J. A. S., Alkorta, I., Elguero, J. & Jekó́, J., nov. 12 2004, In : European Journal of Organic Chemistry. 22, p. 4672-4679 8 p.

Research output: Article

hydrazine
Pyrazoles
Acetic Acid
Nuclear magnetic resonance
Oxidation
3 Citations (Scopus)
Tetralones
Enantioselectivity
Ketones
Acetates
Ligands
2003
42 Citations (Scopus)
sulfoxide
Sulfones
Stereochemistry
sulfones
epoxy compounds
3 Citations (Scopus)
Oxidation
Acetone
Temperature
benzothiazoline
dimethyldioxirane
10 Citations (Scopus)

Dioxirane oxidation of sulfur-containing organic compounds

Lévai, A., 2003, In : Arkivoc. 2003, 14, p. 14-30 17 p.

Research output: Article

Organic compounds
Sulfur
Oxidation
Oxidants
dioxirane
21 Citations (Scopus)
Ketones
ketones
Hydrogenation
hydrogenation
catalysts
3 Citations (Scopus)

Epoxidation of homoisoflavones

Lévai, A., márc. 2003, In : Journal of Heterocyclic Chemistry. 40, 2, p. 395-397 3 p.

Research output: Article

Isoflavones
Epoxidation
Sodium Hypochlorite
Epoxy Compounds
Microanalysis
18 Citations (Scopus)
Hydrazines
Pyrazoles
Microanalysis
Nuclear magnetic resonance spectroscopy
thioflavanone
8 Citations (Scopus)
Alkali Metals
Acetylation
Isoflavones
Protonation
Matrix-Assisted Laser Desorption-Ionization Mass Spectrometry