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1

Synthesis and resolution of a Tolperisone metabolite

József Bálint, Zoltán Hell, Imre Markovits, László Párkányi, Elemér Fogassy

Journal:

Tetrahedron: Asymmetry

Year:

2000

Language:

english

File:

PDF, 162 KB

english, 2000

2

Zeolite-catalyzed Pechmann synthesis of coumarins

Adrienn Hegedüs, Zoltán Hell

Journal:

Catalysis Letters

Year:

2006

Language:

english

File:

PDF, 517 KB

english, 2006

3

Palladium-catalyzed transfer hydrogenation of nitrobenzenes: investigation of the selectivity

Németh, János, Kiss, Árpád, Hell, Zoltán

Journal:

Reaction Kinetics, Mechanisms and Catalysis

Year:

2014

Language:

english

File:

PDF, 247 KB

english, 2014

4

Zeolite-catalyzed simple synthesis of isochromans via the oxa-Pictet–Spengler reaction

Hegedüs, Adrienn, Hell, Zoltán

Journal:

Organic & Biomolecular Chemistry

Year:

2006

Language:

english

File:

PDF, 99 KB

english, 2006

5

Palladium/Magnesium-Lanthanum Mixed Oxide Catalyst in the Heck Reaction

Agnieszka Cwik, Zoltán Hell, François Figueras

Journal:

Advanced Synthesis & Catalysis

Year:

2006

Language:

english

File:

PDF, 117 KB

english, 2006

6

ChemInform Abstract: Diastereoselectivity in the Formation of Bicyclic Cyclopropane Carboxylic Acid Lactones.

Zoltan Hell, Zoltan Finta, Tamas Gruenvald, Zsolt Boecskei, Daniella Balan, Gyoergy M. Keserue, Laszlo Toeke

Journal:

Year:

1999

File:

PDF, 29 KB

1999

7

ChemInform Abstract: Unexpected Substituent Effect in the Stereoselective Synthesis of Trifluoromethyl Group Containing Cyclopropane Lactones.

Ferenc Faigl, Zoltan Finta, Zoltan Hell, Istvan Koevesdi, Laszlo Toke

Journal:

Year:

2000

File:

PDF, 29 KB

2000

8

ChemInform Abstract: Effect of Microwave Irradiation on the Formation of Bicyclic Cyclopropane Derivatives.

Zoltan Finta, Zoltan Hell, Laszlo Toke

Journal:

Year:

2000

File:

PDF, 28 KB

2000

9

ChemInform Abstract: Synthesis and Separation of Substituted Cyclopropane Carboxylic Acid Amide Isomers.

Zoltan Finta, Zoltan Hell, Jozsef Balint, Adrienn Takacs, Laszlo Parkanyi, Laszlo Toeke

Journal:

Year:

2001

File:

PDF, 27 KB

2001

10

ChemInform Abstract: A Simple Synthesis of 2-Substituted Oxazolines and Oxazines.

Agnieszka Cwik, Zoltan Hell, Adrienn Hegedues, Zoltan Finta, Zoltan Horvath

Journal:

Year:

2002

File:

PDF, 29 KB

2002

11

A Simple Synthesis of 1,1,2-Tris-(hydroxymethyl)cyclopropane and Its Dihalo Derivatives.

Zoltan Finta, Zoltan Hell, Agnieszka Cwik, Laszlo Toke

Journal:

Year:

2003

File:

PDF, 115 KB

2003

12

Zeolite-Catalyzed Simple Synthesis of Different Heterocyclic Rings. Part 2.

Adrienn Hegedues, Ilona Vigh, Zoltan Hell

Journal:

Year:

2005

File:

PDF, 19 KB

2005

13

One-Step Preparation of 1-Substituted Tetrahydroisoquinolines via the Pictet—Spengler Reaction Using Zeolite Catalysts.

Adrienn Hegedues, Zoltan Hell

Journal:

Year:

2005

File:

PDF, 25 KB

2005

14

Zeolite-Catalyzed Environmentally Friendly Tetrahydropyranylation of Alcohols and Phenols.

Adrienn Hegedues, Ilona Vigh, Zoltan Hell

Journal:

Year:

2005

File:

PDF, 17 KB

2005

15

Modified Mg: Al Hydrotalcite in the Synthesis of Oxazolidin-2-ones.

Agnieszka Cwik, Aliz Fuchs, Zoltan Hell, Ildiko Boejtoes, Dora Halmai, Petra Bombicz

Journal:

Year:

2005

File:

PDF, 21 KB

2005

16

Nitroaldol-Reaction of Aldehydes in the Presence of Non-Activated Mg:Al 2:1 Hydrotalcite: A Possible New Mechanism for the Formation of 2-Aryl-1,3-dinitropropanes.

Agnieszka Cwik, Aliz Fuchs, Zoltan Hell, Jean-Marc Clacens

Journal:

Year:

2005

File:

PDF, 28 KB

2005

17

Solid Base Catalyzed Synthesis of 5-Substituted 4,5-Dihydroisoxazoles.

Agnieszka Cwik, Zoltan Hell, Aliz Fuchs, Dora Halmai

Journal:

Year:

2005

File:

PDF, 18 KB

2005

18

ChemInform Abstract: A Simple Method for the Preparation of Propargylamines Using Molecular Sieve Modified with Copper(II).

Anna Fodor, Arpad Kiss, Nora Debreczeni, Zoltan Hell, Ivan Gresits

Journal:

Year:

2011

File:

PDF, 50 KB

2011

19

ChemInform Abstract: A Heterogeneous Catalytic Method for the Conversion of Nitriles into Amides Using Molecular Sieves Modified with Copper(II).

Arpad Kiss, Zoltan Hell

Journal:

Year:

2012

File:

PDF, 27 KB

2012

20

Optical resolution by crystallization from melt using enantiomer derivatives as resolving agents: Nonlinear behavior of resolving agent mixtures

József Schindler, Márton Egressy, József Bálint, Zoltán Hell, Elemér Fogassy

Journal:

Year:

2005

Language:

english

File:

PDF, 206 KB

english, 2005

21

Zeolite-catalyzed simple synthesis of different heterocyclic rings, part 2

Adrienn Hegedüs, Ilona Vígh, Zoltán Hell

Journal:

Heteroatom Chemistry

Year:

2004

Language:

english

File:

PDF, 81 KB

english, 2004

22

Benzocrown derivatives as ionophores for alkali cations, II. Synthesis and comparison of urethane-, ether-, and ester-linked bis-crown compounds and several „crown-ring free” analogues

Lászlo Tőke, István Bitter, Béla Ágai, Zoltán Hell, Ernő Lindner, Klára Tóth, Mária Horváth, Salman Harfouch, Ernő Pungor

Journal:

European Journal of Organic Chemistry

Year:

1988

Language:

english

File:

PDF, 571 KB

english, 1988

23

Benzocrown derivatives as ionophores for alkali cations, III. Synthesis of ring-cleaved analogues of benzocrown ethers a novel method for building up crown ether rings

László Tőke, István Bitter, Béla Ágai, Zoltán Hell, Ernő Lindner, Klára Tóth, Mária Horváth, Áron Szöllősy, Salman Harfouch, Ernő Pungor

Journal:

European Journal of Organic Chemistry

Year:

1988

Language:

english

File:

PDF, 270 KB

english, 1988

24

Structure determination and molecular modelling of an unexpected side product of a cyclopropane lactone formation process

Ferenc Faigl, Zoltán Finta, Zoltán Hell, Tamás Kárpáti, Veronika Harmat, István Kövesdi, László Tőke

Journal:

Journal of Molecular Structure

Year:

2004

Language:

english

File:

PDF, 158 KB

english, 2004

25

One-step preparation of 1-substituted tetrahydroisoquinolines via the Pictet–Spengler reaction using zeolite catalysts

Adrienn Hegedüs, Zoltán Hell

Journal:

Tetrahedron Letters

Year:

2004

Language:

english

File:

PDF, 244 KB

english, 2004

26

Solid base-catalyzed synthesis of 5-substituted 4,5-dihydroisoxazoles

Agnieszka Cwik, Zoltán Hell, Aliz Fuchs, Dóra Halmai

Journal:

Tetrahedron Letters

Year:

2005

Language:

english

File:

PDF, 112 KB

english, 2005

27

A copper-free Sonogashira reaction using a Pd/MgLa mixed oxide

Agnieszka Cwik, Zoltán Hell, François Figueras

Journal:

Tetrahedron Letters

Year:

2006

Language:

english

File:

PDF, 95 KB

english, 2006

28

Unexpected substituent effect in the stereoselective synthesis of trifluoromethyl group containing cyclopropane lactones

Ferenc Faigl, Zoltán Finta, Zoltán Hell, István Kövesdi, László Tõke

Journal:

Journal of Fluorine Chemistry

Year:

2000

Language:

english

File:

PDF, 125 KB

english, 2000

29

Single electron transfer induced elemental steps in the transformation of iodomalonic esters and related CH-acids under solid-liquid PTC conditions. Preparation of electrophilic cyclopropanes

László To&amp, #x030B, ke, Zoltán Hell, Gábor T. Szabó, Gábor Tóth, Mária Bihari, Antal Rockenbauer

Journal:

Year:

1993

Language:

english

File:

PDF, 890 KB

english, 1993

30

Diastereoselectivity in the formation of bicyclic cyclopropane carboxylic acid lactones

Zoltán Hell, Zoltán Finta, Tamás Grünvald, Zsolt Böcskei, Daniella Balán, György M. Keseru&amp, #x030B, , László To&amp, #x030B, ke

Journal:

Year:

1999

Language:

english

File:

PDF, 518 KB

english, 1999

31

Reaction of non-activated olefins with CH-acids; a novel method for the preparation of electrophilic cyclopropanes

László Tóke, Gábor T Szabó, Zoltán Hell, Gábor Tóth

Journal:

Tetrahedron Letters

Year:

1990

Language:

english

File:

PDF, 217 KB

english, 1990

32

Nucleophilic ring cleavage of crown ethers, novel method for building up crown ether rings

Béla Ágai, István Bitter, Zoltán Hell, Áron Szöllősy, László Tőke

Journal:

Tetrahedron Letters

Year:

1985

Language:

english

File:

PDF, 198 KB

english, 1985

33

A simple synthesis of 2-substituted oxazolines and oxazines

Agnieszka Cwik, Zoltán Hell, Adrienn Hegedüs, Zoltán Finta, Zoltán Horváth

Journal:

Tetrahedron Letters

Year:

2002

Language:

english

File:

PDF, 76 KB

english, 2002

34

Synthesis and separation of substituted cyclopropane carboxylic acid amide isomers

Zoltán Finta, Zoltán Hell, József Bálint, Adrienn Takács, László Párkányi, László Tőke

Journal:

Tetrahedron: Asymmetry

Year:

2001

Language:

english

File:

PDF, 139 KB

english, 2001

35

Mg-Al 3:1 hydrotalcite catalyst in the synthesis of cyclopropane carboxylic acid derivatives

Zoltán Finta, Zoltán Hell, Daniella Balán, Agnieszka Cwik, Sándor Kemény, François Figueras

Journal:

Journal of Molecular Catalysis A: Chemical

Year:

2000

Language:

english

File:

PDF, 134 KB

english, 2000

36

A new and convenient method for the acylation of amino acids in the presence of a modified zeolite: Ersorb®

Zoltán Hell, Agnieszka Cwik, Zoltán Finta, Zoltán Horváth

Journal:

Journal of Molecular Catalysis A: Chemical

Year:

2002

Language:

english

File:

PDF, 58 KB

english, 2002

37

A Simple Environmentally-friendly Method for the Selective Synthesis of 1,5-benzodiazepine Derivatives using Zeolite Catalyst

Adrienn Hegedüs, Zoltán Hell, Attila Potor

Journal:

Catalysis Letters

Year:

2005

Language:

english

File:

PDF, 181 KB

english, 2005

38

A new, simple synthesis of 1,2-dihydroquinolinesviacyclocondensation using zeolite catalyst

Adrienn Hegedüs, Zoltán Hell, Tamás Vargadi, Attila Potor, Iván Gresits

Journal:

Catalysis Letters

Year:

2007

Language:

english

File:

PDF, 197 KB

english, 2007

39

Heterogeneous Catalytic Solvent-free Synthesis of Quinoline Derivatives via the Friedländer Reaction

Árpád Kiss, Attila Potor, Zoltán Hell

Journal:

Catalysis Letters

Year:

2008

Language:

english

File:

PDF, 238 KB

english, 2008

40

An efficient and environmental-friendly synthesis of 4-hydroxy-arylpiperidines using hydrotalcite catalyst

Agnieszka Cwik, Aliz Fuchs, Zoltán Hell, Jean-Marc Clacens

Journal:

Journal of Molecular Catalysis A: Chemical

Year:

2004

Language:

english

File:

PDF, 76 KB

english, 2004

41

Nitroaldol-reaction of aldehydes in the presence of non-activated Mg:Al 2:1 hydrotalcite; a possible new mechanism for the formation of 2-aryl-1,3-dinitropropanes

Agnieszka Cwik, Aliz Fuchs, Zoltán Hell, Jean-Marc Clacens

Journal:

Year:

2005

Language:

english

File:

PDF, 207 KB

english, 2005

42

Decomposition of organic hydroperoxides on cation exchangers XV. The kinetics of the decomposition process ofp-isopropylcumene hydroperoxide on a catalyst of montmorillonite type

János Vodnár, Sándor Békássy, Nicu Dulămiţă, István Lőrinczi, Zoltán Hell

Journal:

Reaction Kinetics, Mechanisms and Catalysis

Year:

2004

Language:

english

File:

PDF, 83 KB

english, 2004

43

Convenient One‐Pot Heterogeneous Catalytic Method for the Preparation of 3,4‐Dihydropyrimidin‐2(1H)‐ones

Hegedüs, Adrienn, Hell, Zoltán, Vígh, Ilona

Journal:

Synthetic Communications

Year:

2006

Language:

english

File:

PDF, 97 KB

english, 2006

44

Zeolite‐Catalyzed Environmentally Friendly Synthesis of Benzimidazole Derivatives

Hegedüs, Adrienn, Hell, Zoltán, Potor, Attila

Journal:

Synthetic Communications

Year:

2006

Language:

english

File:

PDF, 83 KB

english, 2006

45

A heterogeneous catalytic method for the conversion of nitriles into amides using molecular sieves modified with copper(II)

Árpád Kiss, Zoltán Hell

Journal:

Tetrahedron Letters

Year:

2011

Language:

english

File:

PDF, 790 KB

english, 2011

46

Theoretical study on the 5-exo/6-endo selectivity in the cyclization of electrophilic radicals

György M. Keseru&amp, #x030B, , László To&amp, #x030B, ke, Zoltán Hell, Zsuzsanna M. Jászay, Imre Petneházy, László Korecz

Journal:

Journal of Molecular Structure: THEOCHEM

Year:

1997

Language:

english

File:

PDF, 435 KB

english, 1997

47

A new, environmentally-friendly method for the Bischler–Napieralski cyclization using zeolite catalyst

Adrienn Hegedüs, Zoltán Hell, Attila Potor

Journal:

Catalysis Communications

Year:

2006

Language:

english

File:

PDF, 110 KB

english, 2006

48

Suzuki–Miyaura cross-coupling reaction catalyzed by Pd/MgLa mixed oxide

Cwik, Agnieszka, Hell, Zoltán, Figueras, François

Journal:

Organic & Biomolecular Chemistry

Year:

2005

Language:

english

File:

PDF, 96 KB

english, 2005

49

Heterogeneous Catalytic Method for the Conversion of Aldoximes into Nitriles Using Molecular Sieve Modified with Copper(II)

Kiss, Árpád, Hell, Zoltán

Journal:

Synthetic Communications

Year:

2013

Language:

english

File:

PDF, 303 KB

english, 2013

50

Palladium-catalysed transfer hydrogenation of aromatic nitro compounds — an unusual chain elongation

Németh, János, Kiss, Árpád, Hell, Zoltán

Journal:

Tetrahedron Letters

Year:

2013

Language:

english

File:

PDF, 239 KB

english, 2013