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1

The Wittig Reaction Using Potassium-tert-butoxide High Yield Methylenations of Sterically Hindered Ketones

Fitjer, Lutz, Quabeck, Ulrike

Journal:

Synthetic Communications

Year:

1985

Language:

english

File:

PDF, 306 KB

english, 1985

2

HUNTER: A conformational search program for acyclic to polycyclic molecules with special emphasis on stereochemistry

Weiser, J�rg, Holthausen, Max C., Fitjer, Lutz

Journal:

Journal of Computational Chemistry

Year:

1997

Language:

english

File:

PDF, 451 KB

english, 1997

3

Polyspirane, 91). Umlagerungskaskaden, 41). Über die Verwendbarkeit von Polyspiranen zum Eintritt in Polycyclen-Hyperflächen – Fünf- bzw. neunfache 1,2-Verschiebungen an einem Pentaspiro[3.0.2.0.3.0.2.0.3.1]nonadecan

Lutz Fitjer, Walter Kühn, Ulrich Klages, Ernst Egert, William Clegg, Norbert Schormann, George M. Sheldrick

Journal:

European Journal of Inorganic Chemistry

Year:

1984

File:

PDF, 986 KB

1984

4

Pentacyclo[11.3.0.01,5.05,9.09,13]hexadecane ([4.5]Coronane)

Prof. Dr. Lutz Fitjer, Dipl.-Chem. Ulrike Quabeck

Journal:

Angewandte Chemie International Edition

Year:

1987

Language:

english

File:

PDF, 314 KB

english, 1987

5

Multiple Cyclopropylmethyl-Cyclobutyl-Umlagerungen an einem Pentaspirohexadecanol

Dr. Lutz Fitjer, Detlef Wehle

Journal:

Angewandte Chemie

Year:

1979

Language:

german

File:

PDF, 229 KB

german, 1979

6

Hexaspiro[3.0.3.0.3.0.3.0.3.0.3.0]tetracosan ([6.4]Rotan)

Prof. Dr. Lutz Fitjer, Karl Justus, Peter Puder, Dr. Martin Dittmer, Carla Haßler, Dr. Mathias Noltemeyer

Journal:

Angewandte Chemie

Year:

1991

Language:

german

File:

PDF, 354 KB

german, 1991

7

Theoretische und spektroskopische Untersuchungen an Indigofarbstoffen, XIII Darstellung und Eigenschaften des 3.3′-Dioxo-4.4.4′.4′-tetramethyl-2.2′-biselenolanylidens, einer Verbindung mit dem Grundchromophorsystem des Selenoindigos

Lutz Fitjer, Wolfgang Lüttke

Journal:

European Journal of Inorganic Chemistry

Year:

1972

File:

PDF, 463 KB

1972

8

Cyclobutyl phenyl sulfoxide and (SR)-cyclobutyl p-tolyl sulfoxide: New reagents for the spiroannelation of cyclopentanone

Lutz Fitjer, Werner Schlotmann, Mathias Noltemeyer

Journal:

Tetrahedron Letters

Year:

1995

Language:

english

File:

PDF, 211 KB

english, 1995

9

Theoretische und spektroskopische Untersuchungen an Indigofarbstoffen, XIV 1.4.5.8-Tetrasubstituierte Octandione-(3.6) als mögliche Vorstufen zu Indigo-Grundchromophorsystemen

Lutz Fitjer, Wolfgang Lüttke

Journal:

European Journal of Inorganic Chemistry

Year:

1972

File:

PDF, 404 KB

1972

10

Chair/Twist-Boat Energy Gap in Monocyclic, Conformationally Unconstrained Polyalkylcyclohexanes

Weiser, Jörg, Golan, Oren, Fitjer, Lutz, Biali, Silvio E.

Journal:

Journal of Organic Chemistry

Year:

1996

Language:

english

File:

PDF, 305 KB

english, 1996

11

Theoretische und spektroskopische Untersuchungen an Indigofarbstoffen, XV Indigo-Grundchromophorsysteme und Indigo-Grundchromophor-Abbausubstanzen aus 1.4.5.8-tetra-substituierten Octandionen-(3.6)

Lutz Fitjer, Wolfgang Lüttke

Journal:

European Journal of Inorganic Chemistry

Year:

1972

Language:

german

File:

PDF, 534 KB

german, 1972

12

Polyspirane, 14. — Umlagerungskaskaden, 9. Fünffache Cyclobutylmethyl-Cyclopentyl-Umlagerung an einem Pentaspiro[3.0.3.0.3.0.3.0.3.1]henicosanol — Eine Schlüsselsequenz zur Synthese des [6.5]Coronans

Manfred Giersig, Detlef Wehle, Lutz Fitjer, Norbert Schormann, William Clegg

Journal:

European Journal of Inorganic Chemistry

Year:

1988

File:

PDF, 757 KB

1988

13

Synthesis of tricyclopentanoid sesquiterpenes via rearrangement routes: (±)-modhephene, (±)-epimodhephene and (±)-isocomene

Lutz Fitjer, Marita Majewski, Honorato Monzó-Oltra

Journal:

Year:

1995

Language:

english

File:

PDF, 1.29 MB

english, 1995

14

Synthesis and rearrangement of functionalized dispiro[2.1.3.3]Undecanes - preferred C4C5 over C3C4 ring enlargements

Lutz Fitjer, Marita Majewski, Andreas Kanschik, Ernst Egert, George M Sheldrick

Journal:

Tetrahedron Letters

Year:

1986

Language:

english

File:

PDF, 232 KB

english, 1986

15

Heptacyclo[19.3.0.01,5.05,9.09,13.013,17.017,21]tetracosan ([6.5]Coronan)

Detlef Wehle, Prof. Dr. Lutz Fitjer

Journal:

Angewandte Chemie

Year:

1987

Language:

german

File:

PDF, 331 KB

german, 1987

16

Heptacyclo[19.3.0.01,5.05,9.09,13.013,17.017,21]-tetracosane([6.5]coronane)

Dipl.-Chem. Detlef Wehle, Prof. Dr. Lutz Fitjer

Journal:

Angewandte Chemie International Edition

Year:

1987

Language:

english

File:

PDF, 365 KB

english, 1987

17

Isomerizations of Alkenylidenecyclopropanes Catalyzed by Lewis Acids

Dr. Lutz Fitjer

Journal:

Angewandte Chemie International Edition

Year:

1975

Language:

english

File:

PDF, 223 KB

english, 1975

18

Helical primary structures of 1,2-spiroannelated five-membered rings: attempted synthesis of (±)-tetraspiro[4.0.0.0.4.3.3.3]heneicosane

Tien Widjaja, Lutz Fitjer, Kathrin Meindl, Regine Herbst-Irmer

Journal:

Year:

2008

Language:

english

File:

PDF, 375 KB

english, 2008

19

A rearrangement approach to (±)-cerapicol

Nizar El-Hachach, Matthias Fischbach, Ralf Gerke, Lutz Fitjer

Journal:

Year:

1999

Language:

english

File:

PDF, 601 KB

english, 1999

20

MM3 parameters for carbocations

David Strobl, Jörg Weiser, Lutz Fitjer

Journal:

Year:

1997

Language:

english

File:

PDF, 378 KB

english, 1997

21

Towards a synthesis of (±)modhephene via cascade rearrangement: Synthesis and rearrangement of dispiro[3.0.4.2]undecanes to [3.3.3]propellanes

Lutz Fitjer, Marita Majewski, Andreas Kanschik

Journal:

Tetrahedron Letters

Year:

1988

Language:

english

File:

PDF, 147 KB

english, 1988

22

Durch Lewis-Säuren katalysierte Isomerisierungen von Alkenylidencyclopropanen

Dr. Lutz Fitjer

Journal:

Angewandte Chemie

Year:

1975

Language:

german

File:

PDF, 233 KB

german, 1975

23

Polyspirane, 7. Umlagerungskaskaden, 2: Von Polyspiranen zu Polycyclen – Sechsfache 1,2-Verschiebungen an funktionalisierten Pentaspiro[2.0.2.0.2.0.2.0.2.1]hexadecanen

Lutz Fitjer, Detlef Wehle, Mathias Noltemeyer, Ernst Egert, George M. Sheldrick

Journal:

European Journal of Inorganic Chemistry

Year:

1984

File:

PDF, 955 KB

1984

24

Helical primary structures of four-membered rings: (M)-trispiro[3.0.0.3.2.2]tridecane

Lutz Fitjer, Ralf Gerke, Jörg Weiser, Gabor Bunkoczi, Judit E Debreczeni

Journal:

Year:

2003

Language:

english

File:

PDF, 298 KB

english, 2003

25

Permethylcyclohexane

Lutz Fitjer, Hans-Jörg Scheuermann, Detlef Wehle

Journal:

Tetrahedron Letters

Year:

1984

Language:

english

File:

PDF, 255 KB

english, 1984

26

Synthesis of (3a R ,6a R )-2,2,5,6-Tetramethyl-1,2,3,3a,4,6a-hexahydropentalene: A Potential Precursor of Protoilludane Sesquiterpenes

Fitjer, Lutz, Gerke, Ralf, Anger, Thorsten

Journal:

Year:

1994

File:

PDF, 214 KB

1994

27

ChemInform Abstract: TRICYCLOPROPYLIDEN-((3)-ROTAN)

FITJER, LUTZ, CONIA, JEAN-MARIE

Journal:

Chemischer Informationsdienst

Year:

1973

File:

PDF, 112 KB

1973

28

ChemInform Abstract: THEORETISCHE UND SPEKTROSKOPISCHE UNTERSUCHUNGEN AN INDIGORFARBSTOFFEN 15. MITT. INDIGO-GRUNDCHROMOPHORSYST. UND INDIGO-GRUNDCHROMOPHOR-ABBAUSUBSTANZEN AUS 1,4,5,8-TETRASUBSTITUIERTEN OCTANDIONEN-(3,6)

FITJER, LUTZ, LUETTKE, WOLFGANG

Journal:

Chemischer Informationsdienst

Year:

1972

File:

PDF, 236 KB

1972

29

(±)Modhephene and (±)isocomene via cascade rearrangement

Lutz Fitjer, Andreas Kanschik, Marita Majewski

Journal:

Tetrahedron Letters

Year:

1988

Language:

english

File:

PDF, 268 KB

english, 1988

30

Rearrangement of (-)-.beta.-Caryophyllene. A Product Analysis and Force Field Study

Fitjer, Lutz, Malich, Andreas, Paschke, Carola, Kluge, Sabine, Gerke, Ralf, Rissom, Beate, Weiser, Joerg, Noltemeyer, Mathias

Journal:

Journal of the American Chemical Society

Year:

1995

Language:

english

File:

PDF, 1.25 MB

english, 1995

31

Polyspiranes. 22. Cascade rearrangements. 16. Stereospecific rearrangements in tricyclopentanoid sesquiterpenes: the absolute configuration of (-)-isocomene, (-)-.beta.-isocomene, and (-)-silphinene

Fitjer, Lutz, Monzo-Oltra, Honorato

Journal:

Journal of Organic Chemistry

Year:

1993

Language:

english

File:

PDF, 293 KB

english, 1993

32

Conformational isomerism in a fully substituted cyclohexane

Detlef Wehle, Lutz Fitjer

Journal:

Tetrahedron Letters

Year:

1986

Language:

english

File:

PDF, 207 KB

english, 1986

33

Coupling Reactions of Vinylidenedicyclopropanes Doubly Halogenated in Allylic Positions—A Productive Synthesis of Trispiro[2.0.2.0.2.0]nonane([3]Rotane)

Dr. Lutz Fitjer

Journal:

Angewandte Chemie International Edition

Year:

1976

Language:

english

File:

PDF, 201 KB

english, 1976

34

Polyspirane, 4. Synthesen und Kupplungsreaktionen allylständig halogenierter Vinylcyclopropane und Vinylidendicyclopropane

Journal:

European Journal of Inorganic Chemistry

Year:

1982

Language:

german

File:

PDF, 682 KB

german, 1982

35

Sterically crowded cyclohexanes - 71). synthesis, crystal structure, conformation and dynamics of hexaspiro[2.0.3.0.2.0.3.0.3.0.3.0]docosane and hexaspiro[2.0.3.0.3.0.3.0.3.0.3.0]tricosane

Lutz Fitjer, Manfred Giersig, Detlef Wehle, Martin Dittmer, Georg-Wilhelm Koltermann, Norbert Schormann, Ernst Egert

Journal:

Year:

1988

Language:

english

File:

PDF, 1.02 MB

english, 1988

36

A Universal Rotane Synthesis—Hexaspiro[2.0.2.0.2.0.2.0.2.0.2.0]octadecane([6]Rotane)

Dr. Lutz Fitjer

Journal:

Angewandte Chemie International Edition

Year:

1976

Language:

english

File:

PDF, 204 KB

english, 1976

37

Polyspirane, 5. Synthese und Reaktionen funktionalisierter Polyspirane mit drei- bis achtgliedrigem Zentralring – Polycyclopropylidene ([n]Rotane)

Journal:

European Journal of Inorganic Chemistry

Year:

1982

Language:

german

File:

PDF, 815 KB

german, 1982

38

Polyspirane, 16. – Umlagerungskaskaden, 11. Synthese, Struktur, Konformation und Dynamik von Heptacyclo[19.3.0.01,5.05,9.09,13.0 13,17.017,21]tetracosan ([6.5]Coronan)

Detlef Wehle, Norbert Schormann, Lutz Fitjer

Journal:

European Journal of Inorganic Chemistry

Year:

1988

Language:

german

File:

PDF, 756 KB

german, 1988

39

Helical primary structures of 1,3-spiroannelated five-membered rings: (±)-trispiro[4.1.1.4.2.2]heptadecane and (±)-tetraspiro[4.1.1.1.4.2.2.2]heneicosane

Imelda Meyer-Wilmes, Ralf Gerke, Lutz Fitjer

Journal:

Year:

2009

Language:

english

File:

PDF, 355 KB

english, 2009

40

Sterically crowded cyclohexanes - 81). Synthesis, crystal structure, conformation and dynamics of pentaspiro[2.0.2.0.2.0.2.0.2.1]hexadecane, pentaspiro[3.0.2.0.3.0.2.0.3.1]- nonadecane and pentaspiro[3.0.3.0.3.0.3.0.3.1] heneicosane

Lutz Fitjer, Ulrich Klages, Detlef Wehle, Manfred Giersig, Norbert Schormann, William Clegg, David S. Stephenson, Gerhard Binsch

Journal:

Year:

1988

Language:

english

File:

PDF, 766 KB

english, 1988

41

New indigo chromophores containing disulfide donor groups

Ralf Gerke, Lutz Fitjer, Peter Müller, Isabel Usón, Klaus Kowski, Paul Rademacher

Journal:

Year:

1999

Language:

english

File:

PDF, 348 KB

english, 1999

42

ChemInform Abstract: THEORETISCHE UND SPEKTROSKOPISCHE UNTERSUCHUNGEN AN INDIGOFARBSTOFFEN 14. MITT. 1,4,5,8-TETRASUBSTITUIERTE OCTANDIONE-(3,6) ALS MOEGLICHE VORSTUFEN ZU INDIGO-GRUNDCHROMOPHORSYST.

FITJER, LUTZ, LUETTKE, WOLFGANG

Journal:

Chemischer Informationsdienst

Year:

1972

Language:

german

File:

PDF, 244 KB

german, 1972

43

Von Tetraspiranen zu Bispropellanen

Prof. Dr. Lutz Fitjer, Ulrike Quabeck

Journal:

Angewandte Chemie

Year:

1989

Language:

german

File:

PDF, 363 KB

german, 1989

44

Polyspirane, 6. Versuche zur direkten Homologisierung von Trispiro[2.0.2.0.2.1]decan-10-on und 10-(Benzolsulfonimido)-trispiro[2.0.2.0.2.1]decan mit Diazocyclopropan

Lutz Fitjer, Detlef Wehle

Journal:

European Journal of Inorganic Chemistry

Year:

1982

File:

PDF, 466 KB

1982

45

The stereochemistry of the [2+2]-cycloadditions of cyclopentyne - evidence for an antisymmetrical singlet ground state

Lutz Fitjer, Said Modaressi

Journal:

Tetrahedron Letters

Year:

1983

Language:

english

File:

PDF, 211 KB

english, 1983

46

Percycloalkylated cyclohexanes: attempted synthesis of a trispropellane

Karl Justus, Tobias Beck, Mathias Noltemeyer, Lutz Fitjer

Journal:

Year:

2009

Language:

english

File:

PDF, 316 KB

english, 2009

47

ChemInform Abstract: THEORETISCHE UND SPEKTROSKOPISCHE UNTERSUCHUNGEN AN INDIGOFARBSTOFFEN 12. MITT. HETEROCYCLISCHE FUENFRINGKETONE AUS 1,4-DISUBSTITUIERTEN BUTANONEN-(2), 4,4-DIMETHYL-PYRROLIDON-(3), 4,4-DIMETHYL-THIOLANON-(3) UND 4,4-DIMETHYL-SELENOLAN

FITJER, LUTZ, LUETTKE, WOLFGANG

Journal:

Chemischer Informationsdienst

Year:

1972

File:

PDF, 249 KB

1972

48

Kupplungsreaktionen doppelt allylständig halogenierter Vinylidendicyclopropane – eine ergiebige Synthese für Trispiro [2.0.2.0.2.0]nonan ([3]-Rotan)

Dr. Lutz Fitjer

Journal:

Angewandte Chemie

Year:

1976

File:

PDF, 203 KB

1976

49

Synthesis, conformation and dynamics of 4,4,5,5,6,6,7,7,8,8-decamethyl-1-oxa-spiro[2.5]octane and 1,2,3,3,4,4,5,5,6,6-decamethyl-cyclohexene

Stefan Dressel, Norbert Schormann, Lutz Fitjer

Journal:

Year:

2010

Language:

english

File:

PDF, 495 KB

english, 2010

50

ChemInform Abstract: DURCH LEWIS-SAEUREN KATALYSIERTE ISOMERISIERUNGEN VON ALKENYLIDENCYCLOPROPANEN

Journal:

Chemischer Informationsdienst

Year:

1975

File:

PDF, 119 KB

1975

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