• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 2
  • 1
  • Tagged with
  • 3
  • 3
  • 2
  • 2
  • 2
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

2-(4,6-dimetil-2-pirimidiniltio) alkanų rūgščių hidrazidų sąveika su karboniliniais junginiais / Reactions of 2-(4,6-dimethyl-2-pyrimidinylthio) alkanoic acid hydrazides with carbonylic compounds

Kuršys, Marius 13 June 2005 (has links)
In this work the alkylation of 4,6-dimethylpyrimidin-2(1H)-thione with ethyl bromoalkanoates was described. It was found the reactions in the present of potassium carbonate in boiling acetonitrile gave rise to corresponding S-alkylated derivatives. Under treatment of ethyl 2-(4,6-dimethyl-2-pirimidinylthio)alkanoates with excess of hydrazine hydrate the corresponding hydrazides were prepared. Further refluxing with aromatic monocarbonylic compounds led to formation of corresponding hydrazones. By the spectral data hydrazones exist as mixtures of E/Z conformers. The purity of the synthesized compounds was controlled by thin layer chromatography. The structure was proved by 1H NMR, IR and UV spectra.
2

Funkcines grupes turinčių elektroaktyvių junginių sintezė ir tyrimas / Synthesis and studies of electronically active compounds containing reactive functional groups

Budreckienė, Rūta 19 July 2005 (has links)
Darbo tikslas buvo skyles pernešančių organinių junginių,gebančių efektyviai tinklintis ar fotopolimerizuotis, sintezė.
3

Krūvius transportuojančių, stabilios amorfinės būsenos hidrazonų, azinų bei antrachinono darinių sintezė ir savybės / Synthesis and properties of charge transporting molecular glasses possessing hydrazone, azine and anthraquinone moieties

Vilionskienė, Ingrida 26 July 2005 (has links)
The aims of the work were as follows: • synthesis of branched dimers with stable amorphous state possessing tiophenylsulphide, sulphide and hydroxygroups in the linking fragment of chromophores from aromatic and heteroaromatic alde6 hyde phenylhydrazones. A thorough study of physical and optoelectrographic properties of these charge-transporting compounds; • synthesis of new crosslinkable charge transporting molecular glasses exhibiting high charge carrier mobilities, high morphological stability; • design and synthesis of new hole transporting molecular glasses and polymers (from 9-(2,3-epoxypropyl)carbazole); • investigation of the interaction of 1(2)-aminoanthraquinone and 1- chloro-2,3-epoxypropane (CEP) with the aim to use the products for the creation of hydroxygroups possessing electron-transporting materials, having stable amorphous state.

Page generated in 0.0381 seconds