Browsing Fakultät für Chemie (inkl. GAUSS) by Referee "Tietze, Lutz Prof. Dr. Dr. h.c."
Now showing items 21-31 of 31
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Isolierung, Strukturaufklärung und Biosynthese von Sekundärmetaboliten endophytischer Pilze aus Algen und Pflanzen mariner Habitate
(2005-10-18)The core of the present thesis is the study of endophytic fungi with regard to their production of secondary metabolites. Altogether 56 fungal strains were both chemically and biologically ... -
New Applications of Methyl 2-Chloro-2-cyclopropylideneacetate Towards the Synthesis of Biologically Important Heterocycles
(2005-09-23)The work in this thesis starts with the advanced synthesis of methyl 2-chloro- and 2-bromo-2-cyclopropyledeneacetate (4-Me and 5). The cyclopropanol derivative (31) obtained by Kulinkovich ... -
Bestimmung und Modellierung der Initiatoreffektivität von Diazenen in der Ethen-Hochdruckpolymerisation
(2005-07-29)In this thesis the initiator efficiency of diazenes (azoalkanes), R-N=N-R', in the high-pressure ethene polymerization was determined in a continuously stirred tank reactor. The initiator ... -
Die Zirconiumalkoxid-katalysierte Aldol-Tishchenko-Reaktion von Keton-Aldolen
(2005-05-18)In the first part of the current thesis the aldol-Tishchenko reaction of ketone aldols as enol equivalents has been developed as an efficient strategy to furnish differentiated 1,3-anti ... -
Versuche zur Erzeugung des Pentacyclopropylcyclopentadienyl-Kations, und Synthese von Cyclopropylierten Oligoenen, Carbo- und Heterocyclen
(2004-12-27)The objective of this dissertation on the one hand was to generate the pentacyclopropylcyclopentadienyl cation under stable cation conditions and its characterization by low-temperature ... -
Synthesis, Structure and Reactivity of Manganese Complexes Supported by Carbon or Nitrogen Donor Ligands
(2004-11-23)In this thesis, N-heterocyclic carbene, b-diketiminate and diamide ligands have been employed as supporting moieties for manganese compounds. The experimental results demonstrate that steric ... -
Chemisches Screening von ausgewählten Actinomyceten sowie Strukturaufklärung von Sekundärmetaboliten aus Micromonospora sp. und Pflanzen
(2004-04-27)The core of this thesis is the study of microorganisms and plants of different sources with regard to their production of secondary metabolites.The first part deals with 35 actinomycete ... -
Methanophenazin: Strukturaufklärung und Totalsynthese eines neuartigen Cofaktors aus methanogenen Archaea
(2002-10-30)Methanogenesis is the terminal step in the degradation of complex organic compounds and essential for the mineralization of organic material. The formation of methane from simple compounds ... -
Potentiell photochrome brückenkopfsubstituierte Furo[2,3-d]furane
(2002-04-08)Within the scope of this thesis a photochromic system consisting of furo[2,3-d]furans and bis-quinonemethides was investigated. In the literature the known compounds of this system are ... -
Selektive Halogenierungen unter Phasentransferbedingungen: Mechanistische Untersuchungen und Synthetische Anwendungen
(2001-08-01)The present thesis deals with a new selective method for halogenation (Cl, Br,I) of organic compounds in multiphase systems. Systematic variations of the reaction conditions led to strong ...