Gert Kollenz: search on Z-Library

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1

A nitroketene to nitrile oxide transformation

Kappe, C. Oliver, Kollenz, Gert, Wentrup, Curt

Journal:

Journal of the Chemical Society Chemical Communications

Year:

1992

Language:

english

File:

PDF, 241 KB

english, 1992

2

Functionalization and cyclization reactions of 4-benzoyl-1,5-diphenyl- 1H-pyrazole-3-carboxylic acid

Yunus Akcamur, Ahmet Sener, Alemdar Mustafa Ipekoglu, Gert Kollenz

Journal:

Journal of Heterocyclic Chemistry

Year:

1997

File:

PDF, 294 KB

1997

3

Mechanistic investigations aided by isotopic labeling. 10. Investigations of novel furan-2,3-dione rearrangements by oxygen-17 labeling

Kollenz, Gert, Sterk, Heinz, Hutter, Gerald

Journal:

Journal of Organic Chemistry

Year:

1991

Language:

english

File:

PDF, 528 KB

english, 1991

4

Synthesis and chemical reactivity of methoxycarbonyl-1,3-dioxinyl(pivaloyl)ketene—a persistent α-oxoketene

Wallfisch, Bianca C., Belaj, Ferdinand, Wentrup, Curt, Kappe, C. Oliver, Kollenz, Gert

Journal:

Journal of the Chemical Society Perkin Transactions 1

Year:

2002

Language:

english

File:

PDF, 288 KB

english, 2002

5

α-Oxoketenes - Preparation and Chemistry

Wentrup, Curt, Heilmayer, Werner, Kollenz, Gert

Journal:

Year:

1994

Language:

english

File:

PDF, 1.72 MB

english, 1994

6

Acyl- und Thioacylketene: Synthese von 3-Benzoyl-4-phenylthiet-2-on

Prof. Dr. Curt Wentrup, Hans-Wilhelm Winter, Gerhard Gross, Klaus-Peter Netsch, Prof. Dr. Gert Kollenz, Dr. Walter Ott, Adolf G. Biedermann

Journal:

Angewandte Chemie

Year:

1984

Language:

german

File:

PDF, 217 KB

german, 1984

7

Struktur der 1:1-Addukte von Arylisocyaniden an 4-Benzoyl-5-phenylfuran-2,3-dion und ihrer Produkte mit Nucleophilen. - Neuartige Umlagerungen 5,5-disubstituierter 4-Methylenfuran-2,3-dione

Gert Kollenz, Walter Ott, Erich Ziegler, Eva-Maria Peters, Karl Peters, Hans Georg von Schnering, Viktor Formáček, Helmut Quast

Journal:

European Journal of Organic Chemistry

Year:

1984

File:

PDF, 1.22 MB

1984

8

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

9

Die Struktur eines Pyrrolo[2,3-d]pyrimidins, des Reaktionsprodukts von 4-Benzoyl-5-phenyl-2,3-furandion mit Arylisocyanaten; eine Berichtigung

Karl Peters, Gert Kollenz

Journal:

European Journal of Inorganic Chemistry

Year:

1981

Language:

german

File:

PDF, 227 KB

german, 1981

10

Conformation and reactivity of α-oxo-ketenes: Ab initio and semiempirical (AM1, PM3) calculations

Rudolf Janoschek, Walter M. F. Fabian, Gert Kollenz, C. Oliver Kappe

Journal:

Journal of Computational Chemistry

Year:

1994

Language:

english

File:

PDF, 803 KB

english, 1994

11

Pyridazines. XLV . on the mechanism of an unusual 1,2-diazine → 1,2-diazole ring contraction

Gottfried Heinisch, Thierry Huber, Christina Langer, Walter Gössler, Gert Kollenz

Journal:

Journal of Heterocyclic Chemistry

Year:

1989

File:

PDF, 237 KB

1989

12

Synthesen von Heterocyclen, CC Reaktionen mit cyclischen Oxalylverbindungen, XVIII Zur Reaktion von 4-Benzoyl-5-phenyl-2,3-dihydrofuran-2,3-dion mit Η-aktiven Nucleophilen. / Syntheses of Heterocycles, CC Reactions of Cyclic Oxalyl Compounds, XVIII The Reaction of 4-Benzoyl-5-phenyl-2,3-dihydrofuran-2,3-dione with Η-active Nucleophiles

Kollenz, Gert, Ziegler, Erich, Ott, Walter, Igel, Herwig

Journal:

Zeitschrift für Naturforschung B

Year:

1976

Language:

german

File:

PDF, 3.88 MB

german, 1976

13

Molecular cleft or tweezer compounds derived from trioxabicyclo[3.3.1]nonadiene diisocyanate and diacid dichloride

Kollenz, Gert, Smounig, Ralf, Belaj, Ferdinand, Kvaskoff, David, Wentrup, Curt

Journal:

Beilstein Journal of Organic Chemistry

Year:

2015

Language:

english

File:

PDF, 4.25 MB

english, 2015

14

Reactions of cyclic oxalyl compounds, Part 30: Some reactions with N-amino-pyrimidine derivatives

Behzat Altural, Gert Kollenz

Journal:

Monatshefte für Chemie - Chemical Monthly

Year:

1990

Language:

english

File:

PDF, 363 KB

english, 1990

15

ZurFischer-Indol-Umlagerung sterisch gehinderter Systeme, 6. Mitt.: Reaktionen mit cyclischen Oxalylverbindungen, 22. Mitt.

Journal:

Monatshefte für Chemie - Chemical Monthly

Year:

1978

File:

PDF, 449 KB

1978

16

N-Aminopyrroledione–hydrazonoketene–pyrazolium oxide–pyrazolone rearrangements and pyrazolone tautomerismElectronic supplementary information (ESI) available: calculated and observed IR spectra of 8a and X-ray structure, packing diagram, bond lengths and angles for compound 14. See http://www.rsc.org/suppdata/ob/b3/b304070d

Ebner, Sieglinde, Wallfisch, Bianca, Andraos, John, Aitbaev, Ilyas, Kiselewsky, Michael, Bernhardt, Paul V., Kollenz, Gert, Wentrup, Curt

Journal:

Organic & Biomolecular Chemistry

Year:

2003

Language:

english

File:

PDF, 157 KB

english, 2003

17

Synthesen von Heterocyclen, CCIV1 Reaktionen mit cyclischen Oxalylverbindungen, XIX2 Eine einfache Synthese von 5-Benzoyl-6-phenyl-1.3-dioxin-4-onen / Syntheses of Heterocycles, CCIV1 Reactions of Cyclic Oxalyl Compounds, XIX 2 A Simple Synthesis of 5 Benzoyl-6-phenyl-1,3-dioxin-4-ones

Kollenz, Gert, Ziegler, Erich, Ott, Walter, Kriwetz, Gert

Journal:

Zeitschrift für Naturforschung B

Year:

1977

Language:

german

File:

PDF, 3.77 MB

german, 1977

18

ChemInform Abstract: SYNTH. VON HETEROCYCLEN 169. MITT. RK. MIT CYCLISCHEN OXALYLVERBINDUNGEN 9. MITT. RK. SUBSTITUIERTER 2,3-DIHYDRO-PYRROL-2,3-DIONE MIT O-PHENYLENDIAMIN

Journal:

Chemischer Informationsdienst

Year:

1972

File:

PDF, 256 KB

1972

19

A novel and convenient approach to functionalized 2,6,9-trioxabicyclo[3.3.1]nona-3,7-dienes (bridged bis-dioxines).

C.Oliver Kappe, Gereld Färber, Curt Wentrup, Gert Kollenz

Journal:

Tetrahedron Letters

Year:

1992

Language:

english

File:

PDF, 293 KB

english, 1992

20

Reaktionen mit cyclischen Oxalylverbindungen, 26. Mitt. Cyclokondensation von 4,5-substituierten Thiophen- bzw. N-Alkylpyrrol-2,3-dionen mito-Phenylendiamin

Ewald Terpetschnig, Walter Ott, Gert Kollenz, Karl Peters, Eva-Maria Peters, Hans Georg Schnering

Journal:

Monatshefte für Chemie - Chemical Monthly

Year:

1988

File:

PDF, 490 KB

1988

21

Synthesis and structure of a new 1,2-bridged calix[6]arene

Haberz, Peter, Belaj, Ferdinand, Gloe, Karsten, Wentrup, Curt, Kollenz, Gert

Journal:

Supramolecular Chemistry

Year:

2012

Language:

english

File:

PDF, 268 KB

english, 2012

22

13 C-LABELLED ALIPHATIC NITRILES AND KETONES

Kollenz, Gert, Waldenberger, Hans

Journal:

Organic Preparations and Procedures International

Year:

1980

Language:

english

File:

PDF, 140 KB

english, 1980

23

ChemInform Abstract: REACTIONS OF CYCLIC OXALYL COMPOUNDS. XIII. INDOLE REARRANGEMENT OF 1-DIPHENYLAMINO-2,3-DIHYDRO-2,3-PYRROLEDIONES

KOLLENZ, GERT, LABES, CHRISTA

Journal:

Chemischer Informationsdienst

Year:

1976

File:

PDF, 218 KB

1976

24

Reactions of cyclic oxalyl compounds, 37. Substituent effects on the site of nucleophilic attack at 1H-pyrrole-2,3-diones

C. Oliver Kappe, Ewald Terpetschnig, Gerhard Penn, Gert Kollenz, Karl Peters, Eva-Maria Peters, Hans Georg von Schnering

Journal:

European Journal of Organic Chemistry

Year:

1995

Language:

english

File:

PDF, 740 KB

english, 1995

25

4-benzoyl-5-phenyl-1,3-oxathiol-2-one. Synthesis and reaction with N-nucleophiles

Chang He-Xi, Gert Kollenz

Journal:

Journal of Heterocyclic Chemistry

Year:

1993

File:

PDF, 286 KB

1993

26

Imidoylketene?azetin-2-one?oxoketenimine rearrangement

Kappe, C. Oliver, Kollenz, Gert, Netsch, Klaus-Peter, Leung-Toung, Regis, Wentrup, Curt

Journal:

Journal of the Chemical Society Chemical Communications

Year:

1992

Language:

english

File:

PDF, 210 KB

english, 1992

27

Untersuchungen von Reaktionsmechanismen durch Isotopenmarkierung, VIII. Zum Bildungsweg der Pyrrolo[2,3-d]pyrimidine aus 4-Benzoyl-5-phenyl-2,3-furandion und Arylisocyanaten

Gert Kollenz, Gerhard Penn, Gerhard Dolenz, Yunus Akcamur, Karl Peters, Eva-Maria Peters, Hans Georg Von Schnering

Journal:

European Journal of Inorganic Chemistry

Year:

1984

File:

PDF, 532 KB

1984

28

Synthesen von Heterocyclen, CXCVI. Reaktionen mit cyclischen Oxalylverbindungen, XVIII. Zur Reaktion von heterocyclischen Fünfring-2,3-dionen mit Phenylisocyanid

Erich Ziegler, Gert Kollenz, Walter Ott

Journal:

European Journal of Organic Chemistry

Year:

1976

Language:

german

File:

PDF, 668 KB

german, 1976

29

Reactions of cyclic oxalyl compounds - 32. : Photochemical and thermal 2+2-cycloadditions of diphenylketene and diphenylketen-N-methyl-phenyl-imine to five-membered heterocyclic 23-diones

Ewald Terpetschnig, Gerhard Penn, Gert Kollenz, Karl Peters, Eva-Maria Peters, Hans Georg von Schnering

Journal:

Year:

1991

Language:

english

File:

PDF, 839 KB

english, 1991

30

Reaktionen mit cyclischen Oxalylverbindungen, XXIV. Zur Reaktion von 4-Benzoyl-5-phenyl-furan-2,3-dion mit Phenylhydrazonen bzw. Phenylhydrazin

Yunus Akcamur, Gerhard Penn, Erich Ziegler, Heinz Sterk, Gert Kollenz, Karl Peters, Eva-Maria Peters, Hans Georg Schnering

Journal:

Monatshefte für Chemie - Chemical Monthly

Year:

1986

File:

PDF, 660 KB

1986

31

Synthesis and Complexation Properties of Some Novel Lariat-Crown Ethers

Ralf Smounig, C. Oliver Kappe, Curt Wentrup, Gert Kollenz

Journal:

Monatshefte für Chemie - Chemical Monthly

Year:

2003

Language:

english

File:

PDF, 127 KB

english, 2003

32

Novel [4+2] cycloaddition reactions of ketenimines: a semiempirical molecular orbital study

Walter M.F. Fabian, Gert Kollenz

Journal:

Journal of Molecular Structure: THEOCHEM

Year:

1989

Language:

english

File:

PDF, 526 KB

english, 1989

33

From dipivaloylketene to tetraoxaadamantanes

Kollenz, Gert, Wentrup, Curt

Journal:

Beilstein Journal of Organic Chemistry

Year:

2018

Language:

english

File:

PDF, 563 KB

english, 2018

34

Preparation and Chemistry of an Unexpectedly Stable α-Oxoketene−Pyridine Zwitterion, 2,2-Bis(tert-butylcarbonyl)-1-[4-(dimethylamino)pyridinio]ethen-1-olate

Gert Kollenz, Susanne Holzer, C. Oliver Kappe, Turkaram S. Dalvi, Walter M. F. Fabian, Heinz Sterk, Ming Wah Wong, Curt Wentrup

Journal:

European Journal of Organic Chemistry

Year:

2001

Language:

english

File:

PDF, 353 KB

english, 2001

35

Reaktionen mit cyclischen Oxalylverbindungen, XXIII. Zur Reaktion heterocyclischer Fünfring-2,3-dione mit Carbodiimiden – Eine Synthesemöglichkeit für hetero-analoge 7-Desazapurin-Systeme

Gert Kollenz, Gerhard Penn, Walter Ott, Karl Peters, Eva-Maria Peters, Hans Georg von Schnering

Journal:

European Journal of Inorganic Chemistry

Year:

1984

File:

PDF, 1018 KB

1984

36

Untersuchungen von Reaktionsmechanismen durch Isotopenmarkierung, I. Zur Ringverengung von 3,3-Dichlor-1,2,3,4- tetrahydro-2,4-chinolindionen

Gert Kollenz, Thomas Kappe

Journal:

European Journal of Organic Chemistry

Year:

1974

Language:

german

File:

PDF, 296 KB

german, 1974

37

Synthesis and Host-abilities of some New Corands Bearing Uncommon Chiral Spacer Units

Heilmayer, Werner, Wallfisch, Bianca, Oliver kappe, C., Wentrup, Curt, Gloe, Karsten, Kollenz, Gert

Journal:

Supramolecular Chemistry

Year:

2003

Language:

english

File:

PDF, 382 KB

english, 2003

38

Untersuchungen von Reaktionsmechanismen durch Isotopenmarkierung, VI. Zum Ringverengungsmechanismus von 1,5-Dihydro-2H-1,5-benzodiazepin-2,3,4-trionen

Gerhard Dolenz, Gert Kollenz

Journal:

European Journal of Inorganic Chemistry

Year:

1982

Language:

german

File:

PDF, 401 KB

german, 1982

39

Substituent Effects on Site Selectivity (CC vs CN) in Heterocumulene−Heterodiene [4 + 2] Cycloadditions: Density Functional and Semiempirical AM1 Molecular Orbital Calculations

Fabian, Walter M. F., Kollenz, Gert

Journal:

Journal of Organic Chemistry

Year:

1997

Language:

english

File:

PDF, 176 KB

english, 1997

40

Struktur der Cycloaddukte von Alkyliminen an 4-Benzoyl-5-phenylfuran-2,3-dion - eine Richtigstellung

Ott, Walter, Terpetschnigg, Ewald, Sterk, Heinz, Kollenz, Gert

Journal:

Year:

1987

File:

PDF, 150 KB

1987

41

Synthesis of functionalized macrocyclic derivatives of trioxabicyclo[3.3.0]nonadiene

Leber, Sabine, Kollenz, Gert, Wentrup, Curt

Journal:

Beilstein Journal of Organic Chemistry

Year:

2012

Language:

english

File:

PDF, 269 KB

english, 2012

42

Untersuchungen von Reaktionsmechanismen durch Isotopenmarkierung, VII. Zum Mechanismus der Ringverengung von 2,2-Dichlor-6-methyl-4H-1-thiochroman-3,4-dion

Peter Seidler, Gert Kollenz

Journal:

Monatshefte für Chemie - Chemical Monthly

Year:

1982

File:

PDF, 390 KB

1982

43

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

44

Macrocyclic Systems Containing 2,6,9-Trioxabicyclo[3.3.1]-nona-3,7-dienes as Chiral Spacer Groups: Synthesis, Stereochemical Features and Preliminary Complexation Properties

Chebanov, Valentin A., Reidlinger, Claudia, Kanaani, Hussein, Wentrup, Curt, Oliver Kappe, C., Kollenz, Gert

Journal:

Supramolecular Chemistry

Year:

2004

Language:

english

File:

PDF, 173 KB

english, 2004

45

Mechanism of rearrangement reactions of ketenimine?4-acylfuran-2,3-dione cycloadducts?a semiempirical molecular orbital study

Fabian, Walter M. F., Kollenz, Gert

Journal:

Journal of the Chemical Society Perkin Transactions 2

Year:

1995

Language:

english

File:

PDF, 377 KB

english, 1995

46

ChemInform Abstract: MECHANISTIC INVESTIGATIONS BY ISOTOPIC LABELING, II. MECHANISM OF THE REARRANGEMENT OF 1-DIPHENYLAMINO-2,3-DIHYDRO-2,3-PYRROLEDIONES INTO PYRROLO(2,3-B)INDOLES

KOLLENZ, GERT, LABES, CHRISTA

Journal:

Chemischer Informationsdienst

Year:

1976

File:

PDF, 84 KB

1976

47

Recent Advances in Ring Transformations of Five-Membered Heterocycles and Their Fused Derivatives

György Hajós, Zsuzsanna Riedl, Gert Kollenz

Journal:

European Journal of Organic Chemistry

Year:

2001

Language:

english

File:

PDF, 588 KB

english, 2001

48

Furan-2,3-diones: Convenient Synthons in Heterocyclic Chemistry

Gert Kollenz, Sabine Leber

Journal:

Year:

2004

File:

PDF, 57 KB

2004

49

Imidoylketene - oxoketenimine rearrangement. Facile 1,3-shift of an alkoxy group

Belinda Fulloon, Hisham A.A. El-Nabi, Gert Kollenz, Curt Wentrup

Journal:

Tetrahedron Letters

Year:

1995

Language:

english

File:

PDF, 160 KB

english, 1995

50

Untersuchungen von Reaktionsmechanismen durch Isotopenmarkierung, IV

Gert Kollenz, Wolfgang Maitz

Journal:

Monatshefte für Chemie - Chemical Monthly

Year:

1979

Language:

german

File:

PDF, 341 KB

german, 1979

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