• 1640 Citations
  • 21 h-Index
1965 …2014
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Research Output 1965 2014

  • 1640 Citations
  • 21 h-Index
  • 153 Article
  • 1 Chapter
  • 1 Conference contribution
1998
5 Citations (Scopus)
Cyclohexylamines
Benzoxazines
Cyclopentanes
Isomers
cyclohexane
9 Citations (Scopus)

Saturated heterocycles, part 257*. Preparation and structure of partially saturated isoindolo[1,2-b]-and -[2,1-a]quinazolinones

Sohár, P., Stájer, G., Szabó, A. E., Szúnyog, J. & Bernáth, G., 1998, In : Heterocycles. 48, 1, p. 175-180 6 p.

Research output: Contribution to journalArticle

Quinazolinones
Nuclear magnetic resonance
methylamine
13 Citations (Scopus)
Quinazolinones
Heptanes
Stereochemistry
Carboxylic Acids
Derivatives
8 Citations (Scopus)

Synthesis and structure of methanobenzocyclooctene derivatives

Miklós, F., Csende, F., Stájer, G., Sohár, P., Sillanpää, R., Bernáth, G. & Szúnyog, J., Mar 1998, In : Acta Chemica Scandinavica. 52, 3, p. 322-327 6 p.

Research output: Contribution to journalArticle

hydrazine
Hydrazine
X ray crystallography
Cyclization
Carboxylic acids
18 Citations (Scopus)

The first preparation of a heterotricycle, [1,3]oxazino[2,3- α]isoindole-2,6-dione, by a retro Diels-Alder method

Stájer, G., Szabó, A. E., Sohár, P., Szúnyog, J. & Bernáth, G., May 1998, In : Synthesis. 5, p. 718-720 3 p.

Research output: Contribution to journalArticle

Isoindoles
Cyclopentanes
Hexane
Carboxylic acids
Nuclear magnetic resonance spectroscopy
4 Citations (Scopus)

Transformation of oxomethanobenzocyclooctenecarboxylic acids to pyrrolidinone-fused penta-, hexa- and heptacyclic hetero compounds

Miklós, F., Stájer, G., Sohár, P., Bernáth, G. & Sillanpää, R., 1998, In : Heterocycles. 48, 7, p. 1407-1414 8 p.

Research output: Contribution to journalArticle

Pyrrolidinones
Rubiaceae
Methanol
Propanolamines
Oxazines
1997

3-Endo-(hidroxi-metil)-5-exo-biciklo[2.2.1]heptil-2-endo-amin regioszelektív szintézise és átalakítása telített vagy részlegesen telített diendo-kondenzált heterociklusokká

Translated title of the contribution: Regioselective synthesis of 3-endo-hydroxymethyl-5-exo-phenylbicyclo[2.2.1]heptane-2-endo-amine and its transformation to saturated or partially saturated diendo-fused heterocyclesVirág, M., Stájer, G., Szabó E., A., Bernáth, G., Sohár, P. & Sillanpää, R., Dec 1997, In : Magyar Kemiai Folyoirat, Kemiai Kozlemenyek. 103, 12

Research output: Contribution to journalArticle

Benzoxazines
Heptanes
Amines
Norbornanes
Dichloroacetic Acid
8 Citations (Scopus)
Norbornanes
Oxazines
Ionization
Electrons
Ions
5 Citations (Scopus)
Benzoxazines
Hydrogen
preparation
hydrogen
Nuclear magnetic resonance spectroscopy
11 Citations (Scopus)
hydrazine
Cycloparaffins
Pyrimidinones
Stereoisomerism
X ray analysis
3 Citations (Scopus)

Saturated heterocycles. Part 243. Preparation and steric structure of dodecahydroindolo-[1,7a-a]benzoxazin-12-one isomers

Sillanpää, R., Virág, M., Stájer, G. & Bernáth, G., Jun 1997, In : Acta Chemica Scandinavica. 51, 6-7, p. 810-812 3 p.

Research output: Contribution to journalArticle

Isomers
10 Citations (Scopus)

Structures of pyrrolo-1,3-heterocycles prepared from 3-aroylpropionic acid and cyclic aminoalcohols: An NMR and X-ray diffraction study

Tähtinen, P., Sillanpää, R., Stájer, G., Szabó, A. E. & Pihlaja, K., Mar 1997, In : Journal of the Chemical Society, Perkin Transactions 2. 3, p. 597-606 10 p.

Research output: Contribution to journalArticle

Benzoxazines
Amines
ethylenediamine
hydrazine
Nuclear magnetic resonance

Telitett es reszlegesen telitett izoindolo[2,1-a][3,1]benzoxazinok, -[1,2-b][2,4]benzoxazepinonok, ciklopentan- es -hexan[b]pirrolo[2,1-a][3,1]benzoxazin izomerek szintezise

Translated title of the contribution: Preparation and steric structure elucidation of saturated or partially saturated isoindolo[2,1-a]-[3,1]benzoxazinones, -[1,2-b][2,4]benzoxazepinones, cyclopentane- and -cyclohexane[b]pyrrolo[2,1-a][3,1]-benzoxazinesStájer, G., Virág, M., Szabó, E. A., Bernáth, G. & Sohár, P., Sep 1997, In : Acta Pharmaceutica Hungarica. 67, 5, p. 201-210 10 p.

Research output: Contribution to journalArticle

Benzoxazines
Cyclopentanes
Hydrogen
Magnetic Resonance Spectroscopy
X-Rays
1996

Mass spectrometric fragmentation of saturated isoindolobenzoxazepinones and -benzoxazinones under electron ionization

Partanen, T., Vainiotalo, P., Stájer, G. & Bernáth, G., 1996, In : Rapid Communications in Mass Spectrometry. 10, 9, p. 1013-1018 6 p.

Research output: Contribution to journalArticle

Benzoxazines
Ionization
Electrons
Atoms
Nitrogen
8 Citations (Scopus)
Benzoxazines
Heptane
Amines
Dichloroacetic acid
Amino alcohols
20 Citations (Scopus)
Imidazolidines
Oxazines
Cross-Linking Reagents
Anhydrides
anhydrides
6 Citations (Scopus)

Synthesis and steric structure determination of 9b-p-tolyl-perhydrothiazolo[2,3-a]isoindolone isomers

Stájer, G., Szabó, A. E., Csende, F., Bernáth, G. & Sohár, P., 1996, In : Journal of Molecular Structure. 377, 2, p. 101-104 4 p.

Research output: Contribution to journalArticle

Isomers
isomers
Keto Acids
Cysteamine
synthesis
1995
18 Citations (Scopus)

Copper(II) chloride as an efficient reagent for the dehydrogenation of pyridazinone derivatives

Csende, F., Szabo, Z., Bernáth, G. & Stájer, G., 1995, In : Synthesis. 10, p. 1240-1242 3 p.

Research output: Contribution to journalArticle

Halogenation
Dehydrogenation
Isomers
Derivatives
Copper
23 Citations (Scopus)
Norbornanes
Benzoxazines
Cycloparaffins
Benzoic Acid
Nuclear magnetic resonance spectroscopy
1994
14 Citations (Scopus)

Electron and chemical ionization mass spectrometry in stereochemical differentiation of some 1,3‐amino alcohols

Partanen, T., Vainiotalo, P., Stájer, G., Bernáth, G. & Pihlaja, K., 1994, In : Organic Mass Spectrometry. 29, 3, p. 126-132 7 p.

Research output: Contribution to journalArticle

Norbornanes
Butanes
Stereoisomerism
Methane
Ammonia
18 Citations (Scopus)

Electron impact ionization mass spectrometry and intramolecular cyclization in 2-substituted pyrimidin-4(3 H)-ones

Oksman, P., Stájer, G., Pihlaja, K. & Karelson, M., Feb 1994, In : Journal of the American Society for Mass Spectrometry. 5, 2, p. 113-119 7 p.

Research output: Contribution to journalArticle

Impact ionization
Cyclization
Mass spectrometry
Mass Spectrometry
Substitution reactions
2 Citations (Scopus)

Electron ionization fragmentation of some isoindolone derivatives

Mäki, E., Csende, F., Stájer, G., Vainiotalo, P. & Pihlaja, K., 1994, In : Rapid Communications in Mass Spectrometry. 8, 10, p. 858-862 5 p.

Research output: Contribution to journalArticle

Ionization
Ions
Derivatives
Electrons
Isoindol-1-one
1 Citation (Scopus)

Mass spectral fragmentation of some cycloalkane‐condensed 4,5‐dihydro‐3(2H)‐pyridazinones and 4,5‐dihydro‐6H‐1,2‐oxazin‐6‐ones

Mäki, E., Stájer, G., Csende, F., Vainiotalo, P. & Pihlaja, K., 1994, In : Rapid Communications in Mass Spectrometry. 8, 12, p. 1021-1025 5 p.

Research output: Contribution to journalArticle

Cycloparaffins
Ionization
Ions
Derivatives
Electrons
10 Citations (Scopus)

Preparation and NMR determination of structures of tri‐, tetra‐ and pentacyclic isoindolone derivatives

Sohár, P., Frimpong‐Manso, S., Stájer, G. & Bernáth, G., 1994, In : Magnetic Resonance in Chemistry. 32, 12, p. 705-710 6 p.

Research output: Contribution to journalArticle

ethylenediamine
Diamines
Nuclear magnetic resonance spectroscopy
Conformations
Nuclear magnetic resonance
17 Citations (Scopus)
Norbornanes
Cycloparaffins
Anthracenes
Hydrazines
Heptanes
31 Citations (Scopus)

Preparation and steric structure of condensed-skeleton saturated diphenyl-substituted isoindolones

Stájer, G., Szabó, A. E., Bernáth, G. & Sohár, P., May 1 1994, In : Heterocycles. 38, 5, p. 1061-1070 10 p.

Research output: Contribution to journalArticle

Skeleton
Hydrogen
ethylenediamine
hydrazine
Benzene
37 Citations (Scopus)
Derivatives
Cysteamine
Xylenes
Ethanolamine
Carboxylic Acids

Preparation of steric structure of condensed-skeleton saturated diphenyl-substituted isoindolones

Stájer, G., Szabo, E. A., Bernáth, G. & Sohár, P., 1994, In : Acta Pharmaceutica Hungarica. 64, 5, p. 159-166 8 p.

Research output: Contribution to journalArticle

Skeleton
Hydrogen
ethylenediamine
hydrazine
Benzene
4 Citations (Scopus)
Norbornanes
Oxazines
X ray crystallography
Diffractometers
Conformations
1 Citation (Scopus)
Oxazines
Thiones
Conformations
X-Rays
X rays
1993
12 Citations (Scopus)

Conformational analysis 29: Preparation and1H and13C NMR, FTIR, MS, and crystallographic conformational and configurational study of 3-Oxo-1,3-oxathiane and its monomethyl derivatives

Pihlaja, K., Sillanpää, R., Dahlqvist, M., Stájer, G. & Ahlgren, M., Jun 1993, In : Structural Chemistry. 4, 3, p. 203-210 8 p.

Research output: Contribution to journalArticle

Fourier Transform Infrared Spectroscopy
seats
Nuclear magnetic resonance
Derivatives
preparation
8 Citations (Scopus)

Electron‐impact induced fragmentations of some quinazolinediones and benzoxazinones

Himottu, M., Pihlaja, K., Stájer, G. & Vainiotalo, P., 1993, In : Rapid Communications in Mass Spectrometry. 7, 5, p. 374-377 4 p.

Research output: Contribution to journalArticle

Benzoxazines
Quinazolinones
Carbon Dioxide
2,4(1H,3H)-quinazolinedione
10 Citations (Scopus)

Mass spectral fragmentation reactions of some stereoisomeric cyclic β‐amino acids under electron and chemical ionization

Partanen, T., Vainiotalo, P., Stájer, G., Bernáth, G., Göndös, G. & Pihlaja, K., 1993, In : Rapid Communications in Mass Spectrometry. 7, 12, p. 1121-1125 5 p.

Research output: Contribution to journalArticle

Cyclic Amino Acids
Ionization
Isomers
Electrons
Norbornanes
6 Citations (Scopus)

Structure of 2‐(2‐hydroxyethyl)‐1‐p‐tolyl‐4,5,6,7‐tetrahydro‐3(1H)‐isoindolone

Kapor, A., Stájer, G. & Bernáth, G., 1993, In : Acta Crystallographica Section C: Crystal Structure Communications. 49, 11, p. 1967-1969 3 p.

Research output: Contribution to journalArticle

Isoindol-1-one
5 Citations (Scopus)
Benzoxazines
Oxazines
Spectrum Analysis
Spectroscopy
chloroacetyl chloride
28 Citations (Scopus)

Synthesis and structural study of new saturated isoindol-1-one derivatives

Csende, F., Szabó, Z. & Stájer, G., Aug 1 1993, In : Heterocycles. 36, 8, p. 1809-1821 13 p.

Research output: Contribution to journalArticle

Hydrochloric Acid
Magnesium
Amines
Methanol
Zinc
1992
25 Citations (Scopus)

Preparation of uracil by cycloreversion. Structure of cyclo-alkane/ene and norbornane/ene-fused dihydrouracils

Frimpong-Manso, S., Nagy, K., Stájer, G., Bernáth, G. & Sohár, P., 1992, In : Journal of Heterocyclic Chemistry. 29, 1, p. 221-224 4 p.

Research output: Contribution to journalArticle

Norbornanes
Cycloparaffins
Uracil
Urea
Esters
1991
5 Citations (Scopus)
Thiones
Cycloparaffins
Ionization
Ions
Electrons
19 Citations (Scopus)
Norbornanes
Pyrimidinones
Charge density
electron impact
Mass spectrometry
5 Citations (Scopus)
Cycloparaffins
Pyrimidinones
Isomers
mass spectra
electron impact
7 Citations (Scopus)
Norbornanes
Cycloaddition
Acetonitrile
Nuclear magnetic resonance spectroscopy
Nuclear magnetic resonance
2 Citations (Scopus)
Norbornanes
Chlorides
Oxazines
Acylation
Hydrochloric Acid
6 Citations (Scopus)
Norbornanes
Thiones
X ray crystallography
X ray analysis
Diffractometers
1990
17 Citations (Scopus)
Norbornanes
Thiones
mass spectra
electron impact
Ionization
7 Citations (Scopus)

Mass spectrometric behaviour of cyclopentane‐and cyclohexane‐condensed pyrimidinediones under electron impact

Himottu, M., Pihlaja, K., Bernáth, G., Stájer, G. & Vainiotalo, P., 1990, In : Organic Mass Spectrometry. 25, 5, p. 277-284 8 p.

Research output: Contribution to journalArticle

Aniline Compounds
Mass Behavior
Aniline
Isomers
electron impact
13 Citations (Scopus)

Phenyl-substituted cyclopentane- and cyclohexane-cis-fused-1,3-oxazines and -1,4-oxazepinones. Preparation and stereochemical study

Stájer, G., Szabó, A. E., Frihpong-Manso, S., Bernáth, G. & Sohár, P., 1990, In : Tetrahedron. 46, 19, p. 6859-6868 10 p.

Research output: Contribution to journalArticle

Oxazines
Cyclopentanes
Cycloparaffins
Thiones
Carbamates
1 Citation (Scopus)

POLAROGRAPHIE UND MECHANISMUS DER ELEKTROCHEMISCHEN REAKTION VON 5,8-METHANO-4(3H)-CHINAZOLINONEN

Translated title of the contribution: Polarographic investigation and mechanism of electrochemical reduction of 5,8-methano-4(3H)- quinazolinonesPricken, A., Stájer, G., Pflegel, P. & Bernáth, G., 1990, In : Pharmazie. 45, 7, p. 496-499 4 p.

Research output: Contribution to journalArticle

4-hydroxyquinazoline
3 Citations (Scopus)

POLAROGRAPHIE UND MECHANISMUS DER ELEKTROCHEMISCHEN REDUKTION VON CIS- UND TRANS-TETRAHYDRO-4(3H)-CHINAZOLINONEN

Translated title of the contribution: Polarographic investigation and mechanism of electrochemical reduction of cis- and trans-tetrahydro-4(3H)-quinazolinonesPricken, A., Stájer, G., Szabo, A. E., Fülöp, F., Pflegel, P. & Bernáth, G., 1990, In : Pharmazie. 45, 8, p. 568-571 4 p.

Research output: Contribution to journalArticle

4-hydroxyquinazoline
10 Citations (Scopus)

Preparation and stereostructure of norbornane/ene‐condensed phenyl‐substituted O,N‐heterocycles

Sohár, P., Bernáth, G., Frimpong‐Manso, S., Szabó, A. E. & Stájer, G., 1990, In : Magnetic Resonance in Chemistry. 28, 12, p. 1045-1050 6 p.

Research output: Contribution to journalArticle

Norbornanes
Amino alcohols
Amino Alcohols
Thiones
Conformations
26 Citations (Scopus)
Cycloparaffins
Cyclopentanes
Spectrum Analysis
Spectroscopy
Derivatives