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1

Synthesis of sugar phosphinimine derivatives from amino sugars

István Pintér, József Kovács, András Messmer

Journal:

Carbohydrate Research

Year:

1977

Language:

english

File:

PDF, 367 KB

english, 1977

2

A new route to cyclic urea derivatives of sugars via phosphinimines

József Kovács, István Pintér, András Messmer, Gábor Tóth, Helmut Duddeck

Journal:

Carbohydrate Research

Year:

1987

Language:

english

File:

PDF, 714 KB

english, 1987

3

Selective ring opening of linearly and angularly fused triazolium salts

András Kotschy, György Hajós, András Messmer, Gurnos Jones

Journal:

Year:

1996

Language:

english

File:

PDF, 694 KB

english, 1996

4

Synthesis and ring transformation of novel tetracyclic fused as-triazines

Zsuzsanna Riedl, György Hajós, Gert Kollenz, Heinz Sterk, András Messmer

Journal:

Monatshefte für Chemie - Chemical Monthly

Year:

1992

Language:

english

File:

PDF, 658 KB

english, 1992

5

Synthesis and Methylation of Two Differently Fused Benzologs of Pyrido[1,2-b]pyridazinium-4-olate

Géza Tímári, György Hajós, Sándor Bátori, András Messmer

Journal:

European Journal of Inorganic Chemistry

Year:

1992

Language:

english

File:

PDF, 410 KB

english, 1992

6

Unexpected Ring Transformation to Pyrrolo[3.2- b ]pyridine Derivatives. Fused Azolium Salts. 22 ‡

Riedl, Zsuzsanna, Kövér, Péter, Soós, Tibor, Hajós, György, Egyed, Orsolya, Fábián, László, Messmer, András

Journal:

Journal of Organic Chemistry

Year:

2003

Language:

english

File:

PDF, 179 KB

english, 2003

7

Synthesis and transformations of tetrazolylacroleins

Ildikó Nagy, Dénes Kónya, Zsuzsanna Riedl, András Kotschy, Géza Timári, András Messmer, György Hajós

Journal:

Year:

2003

Language:

english

File:

PDF, 137 KB

english, 2003

8

A novel approach towards acyclic 2-deoxyaldose derivatives

István Pintér, Virág Zsoldos-Mády, András Messmer, Péter Sándor, Stephan D. Gero

Journal:

Carbohydrate Research

Year:

1988

Language:

english

File:

PDF, 210 KB

english, 1988

9

Ring opening of [1,2,3]triazolo[1,5-a]pyrazinium salts: Synthesis and some transformations of a novel type of 2-aza-1,3-butadienes

Mariann Béres, György Hajós, Zsuzsanna Riedl, Géza Timári, András Messmer, Sándor Holly, Joachim G. Schantl

Journal:

Year:

1997

Language:

english

File:

PDF, 381 KB

english, 1997

10

The first synthesis of pyrido[2,1-a]phthalazinium system and its three thieno-fused analogues

Salo Gronowitz, András Messmer, Géza Timári

Journal:

Journal of Heterocyclic Chemistry

Year:

1992

File:

PDF, 276 KB

1992

11

Formation of 2,5-anhydro derivatives in the zemplén de-acetylation of acetylated sugar formazans

Virág Zsoldos, András Messmer, István Pintér, András Neszmélyi

Journal:

Carbohydrate Research

Year:

1978

Language:

english

File:

PDF, 846 KB

english, 1978

12

Selective ring closure to substituted pyrido[1,2-b]-as-triazinium salt

György Hajós, Zsuzsanna Riedl, Eszter Gács-Baitz, Messmer András

Journal:

Year:

1992

Language:

english

File:

PDF, 405 KB

english, 1992

13

A novel synthesis of 2-azido-2-deoxyinosose oximes

Péter Mészáros, István Pintér, András Messmer, Gábor Tóth, Stephan D. Gero

Journal:

Carbohydrate Research

Year:

1990

Language:

english

File:

PDF, 482 KB

english, 1990

14

Synthesis, alkylation and ring opening of two differently fused pyridoquinazolones

Géza Timári, György Hajós, András Messmer

Journal:

Journal of Heterocyclic Chemistry

Year:

1990

File:

PDF, 366 KB

1990

15

Fused Azolium Salts. Part 21. Chemical Reactivity of [1,2,3]Tirazolo[1,5-a]- and [1,5-c]-pyrimidinium Salts.

Sandor Batori, Eszter Gacs-Baitz, Sandor Bokotey, Andras Messmer

Journal:

Year:

2003

File:

PDF, 153 KB

2003

16

Photoinduced ring transformation of pyrido-[1,2-b]pyridazinium-4-olate

Sándor Bátori, Dietrich Döpp, András Messmer

Journal:

Year:

1994

Language:

english

File:

PDF, 611 KB

english, 1994

17

Regioselectivity in methylation and phenylation of the zwitterionic pyrido[2,1-f]-as-triazinium-1- and 3-olates and thiolates

Sándor Bátori, András Messmer

Journal:

Journal of Heterocyclic Chemistry

Year:

1988

File:

PDF, 540 KB

1988

18

Direct arylation of tetrazolo[1,5-a]pyridine and its benzenologues

András Messmer, György Hajós, Judit Fleischer, Mátyás Czugler

Journal:

Monatshefte für Chemie - Chemical Monthly

Year:

1985

Language:

english

File:

PDF, 228 KB

english, 1985

19

2-Acetamido-2-deoxyaldonolactones from sugar formazans

Virág Zsoldos-Mády, István Pintér, András Neszmélyi, András Messmer, András Perczel

Journal:

Carbohydrate Research

Year:

1994

Language:

english

File:

PDF, 682 KB

english, 1994

20

Synthesis and selective reactions of v-triazolo-[1,5-b]pyridazinium salts with nucleophiles. A facile access to functionalized ethenyl-1,2,3-triazoles

Zsuzsanna Riedl, György Hajós, András Messmer, Gert Kollenz

Journal:

Journal of Heterocyclic Chemistry

Year:

1993

File:

PDF, 381 KB

1993

21

Synthesis of Azinylvinylpyridazines: A General Note on the Isomerization of Hetaryldienamines †

Kotschy, András, Hajós, György, Timári, G., Messmer, András

Journal:

Journal of Organic Chemistry

Year:

1996

Language:

english

File:

PDF, 196 KB

english, 1996

22

Unusual conversions of a zwitterionic polyfused triazine with electron-deficient dienophiles

Riedl, Zsuzsanna, Hajós, György, Messmer, András, Rockenbauer, Antal, Korecz, László, Kollenz, Gert, Fabian, Walter M. F., Peters, Karl, Peters, Eva-Maria

Journal:

Chemical Communications

Year:

1997

Language:

english

File:

PDF, 87 KB

english, 1997

23

"IONIC DIELS-ALDER" REACTION OF ΗETARYLDIENAMINES

Kotschy, András, Hajós, György, Timári, Géza, Messmer, András, Schantl, Joachim G.

Journal:

Heterocyclic Communications

Year:

1997

Language:

english

File:

PDF, 236 KB

english, 1997

24

Synthesis of N-(1-Aziridinyl)-6-fluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic Acids

Bátori, Sándor, Tímári, Géza, Messmer, András, Podányi, Benjámin, Vasvárii-Debreczy, Lelle, Hermecz, István

Journal:

Year:

1997

Language:

english

File:

PDF, 405 KB

english, 1997

25

Reactivity of Substituted N-Aminopyridinium Salts and Their Benzologues. A Novel Approach to s-Triazolo[1,5-a]quinolinium and s-Triazolo[5,1-a]isoquinolinium Derivatives

Messmer, András, B�ori, S�dor, S�dor, P師er

Journal:

Year:

1990

Language:

english

File:

PDF, 475 KB

english, 1990

26

Fused triazoles and triazolium salts with bridgehead nitrogen atom. Novel syntheses and selective transformations

György Halós, Zsuzsanna Riedl, Géza Timári, András Kotschy, Mariann Béres, Tibor Soós, András Messmer, Sándor Bátori, Wolfgang Ritzberger, Joachim Schantl

Journal:

Chemistry of Heterocyclic Compounds

Year:

1995

Language:

english

File:

PDF, 506 KB

english, 1995

27

Structure elucidation of tetrazolo[5,1-c]benzo-as-triazine. An interesting ternary equilibrium of tetrazole-azide systems

Messmer, Andras, Hajos, Gyorgy, Tamas, Jozsef, Neszmelyi, Andras

Journal:

Journal of Organic Chemistry

Year:

1979

Language:

english

File:

PDF, 342 KB

english, 1979

28

Synthesis of new stable arylthiopyridinium N-arylimide zwitterions. Part 20: Fused azolium salts

András Messmer, Péter Kövér, Zsuzsanna Riedl, Ágnes Gömöry, György Hajós

Journal:

Year:

2002

Language:

english

File:

PDF, 173 KB

english, 2002

29

Fused Azolium Salts XVIII [1]. Synthesis and Reactivity of a Novel Fused Heteroaromatic System: [1,2,3]Triazolo[1,5-b]isoquinolinium Salts

Mariann Béres, György Hajós, Zsuzsanna Riedl, Géza Timári, András Messmer

Journal:

Monatshefte für Chemie - Chemical Monthly

Year:

1998

Language:

english

File:

PDF, 200 KB

english, 1998

30

Formation of phosphonioepimino salts of sugars: a novel neighboring-group participation

István Pintér, József Kovács, András Messmer, Alajos Kálmán, Gábor Tóth, Börje K. Lindberg

Journal:

Carbohydrate Research

Year:

1979

Language:

english

File:

PDF, 522 KB

english, 1979

31

A simple synthesis of epimeric 2-azidoinosose derivatives

István Pintér, József Kovács, András Messmer, Gábor Tóth, Stephan D. Gero

Journal:

Carbohydrate Research

Year:

1983

Language:

english

File:

PDF, 361 KB

english, 1983

32

Chemical reactivity of [1,2,3]triazolo[1,5-a]- and [1,5-c]-pyrimidinium salts

Sándor Bátori, Eszter Gács-Baitz, Sándor Bokotey, András Messmer

Journal:

Year:

2003

Language:

english

File:

PDF, 169 KB

english, 2003

33

NEW EVIDENCE FOR ISOMERISM OF THE FORMAZYL GROUP. SYNTHESIS OF SELECTIVELY PROTECTED 2-DEOXY-GALACTOSE FORMAZANS

Zsoldos-Mády, Virág, Pintér, István, Sándor, Péter, Peredy-Kajtár, Mária, Messmer, András

Journal:

Journal of Carbohydrate Chemistry

Year:

2001

Language:

english

File:

PDF, 366 KB

english, 2001

34

ChemInform Abstract: New Evidence for Isomerism of the Formazyl Group. Synthesis of Selectively Protected 2-Deoxy-galactose Formazans.

Virag Zsoldos-Mady, Istvan Pinter, Peter Sandor, Maria Peredy-Kajtar, Andras Messmer

Journal:

Year:

2002

File:

PDF, 31 KB

2002

35

A simple approach to new 5-butenylidene-imidazolin-2-ones from 2-amino-2-deoxy-d-glucose

József Kovács, István Pintér, András Messmer, Gábor Tóth, Ursula Lendering, Peter Köll

Journal:

Carbohydrate Research

Year:

1990

Language:

english

File:

PDF, 322 KB

english, 1990

36

Unprotected sugar phosphinimines: A facile route to cyclic carbamates of amino sugars

József Kovács, István Pintér, András Messmer, Gábor Tóth

Journal:

Carbohydrate Research

Year:

1985

Language:

english

File:

PDF, 656 KB

english, 1985

37

New Fused as-Triazines with Bridgehead Nitrogen Synthesis and Reactivity

György Hajós, András Messmer, Sándor Bátori, Zsuzsanna Riedl

Journal:

Bulletin des Sociétés Chimiques Belges

Year:

1992

Language:

english

File:

PDF, 437 KB

english, 1992

38

Synthesis of New Zwitterionic Pyridazino-as-triazines

Zsuzsanna Juhász-Riedl, György Hajós, Eszter G´cs-Baitz, Gert Kollenz, András Messmer

Journal:

European Journal of Inorganic Chemistry

Year:

1990

Language:

english

File:

PDF, 492 KB

english, 1990

39

Synthesis and regiospecificity in methylation of pyrido[1,2-a]pyrazinium-1- and 3-olates and pyrido[1,2-b]pyridazinium-2- and 4-olates

Sándor Bátori, András Messmer

Journal:

Journal of Heterocyclic Chemistry

Year:

1990

File:

PDF, 588 KB

1990

40

Synthesis and Transformations of Tetrazolylacroleins.

Ildiko Nagy, Denes Konya, Zsuzsanna Riedl, Andras Kotschy, Geza Timari, Andras Messmer, Gyoergy Hajos

Journal:

Year:

2004

File:

PDF, 114 KB

2004

41

Synthesis of novel ellipticine analogues and their inhibition of Moloney leukaemia reverse transcriptase

Géza Timári, Tibor Soós, György Hajós, András Messmer, János Nacsa, József Molnár

Journal:

Bioorganic & Medicinal Chemistry Letters

Year:

1996

Language:

english

File:

PDF, 305 KB

english, 1996

42

Valence Bond Isomerization of Fused [1,2,3]Triazolium Salts with Bridgehead Nitrogen Atom. Fused Azolium Salts. 19 †,‡

Béres, Mariann, Hajós, György, Riedl, Zsuzsanna, Soós, Tibor, Timári, Géza, Messmer, András

Journal:

Journal of Organic Chemistry

Year:

1999

Language:

english

File:

PDF, 167 KB

english, 1999

43

Notizen/Notes Selective Alkylations of Tricyclic Pyrrolo- and Pyridazino-as-Triazines1). – A Novel Evidence of the Importance of the Lone-Pair Densities

Zsuzsanna Juh´az-Riedl, György Hajóas, Eszter G´acs-Baitz, Andŕas Messmer, Gert Kollenz

Journal:

European Journal of Inorganic Chemistry

Year:

1991

Language:

english

File:

PDF, 272 KB

english, 1991

44

MEP maps as useful tools for prediction of selectivity of alkylations of fused N-heteroaromatics

György Hajós, Gyula Tasi, József Csontos, Werner Gyõrffy, Zsuzsanna Riedl, Géza Timári, András Messmer

Journal:

Journal of Molecular Structure: THEOCHEM

Year:

1998

Language:

english

File:

PDF, 350 KB

english, 1998

45

Synthesis of Novel Heteroaromatic Polyfused as-Triazines by Ring Transformation[1]

Zsuzsanna Riedl, György Hajòs, András Messmer, Gert Kollenz

Journal:

European Journal of Inorganic Chemistry

Year:

1994

Language:

english

File:

PDF, 324 KB

english, 1994

46

Linearly fused isoquinolines. 3. Positional effect of substitution on equilibrium of tetrazole-azide systems. Anomalous behavior in trifluoroacetic acid

Messmer, Andras, Hajos, Gyoergy

Journal:

Journal of Organic Chemistry

Year:

1981

Language:

english

File:

PDF, 496 KB

english, 1981

47

New imino sugar derivatives from a 6-azido-6-deoxy sugar formazan

Virág Zsoldos-Mády, István Pintér, Péter Sándor, András Messmer

Journal:

Carbohydrate Research

Year:

1996

Language:

english

File:

PDF, 588 KB

english, 1996

48

Expected Selectivity and Unexpected Isomerization in the Inverse Diels-Alder Reaction of Azolyl Dienes

Kotschy, Andras, Hajos, Gyorgy, Messmer, Andras

Journal:

Journal of Organic Chemistry

Year:

1995

Language:

english

File:

PDF, 402 KB

english, 1995

49

ChemInform Abstract: Valence Bond Isomerization of Fused [1,2,3]Triazolium Salts with Bridgehead Nitrogen Atom. Fused Azolium Salts. Part 19.

Mariann Beres, Gyoergy Hajos, Zsuzsanna Riedl, Tibor Soos, Geza Timari, Andras Messmer

Journal:

Year:

1999

File:

PDF, 34 KB

1999

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