Sulphoamidic Phtalocyaninic Pigments and Dyes(II)

2008 ◽  
Vol 59 (5) ◽  
Author(s):  
Elena Stingaciu ◽  
Corneliu Minca ◽  
Ion Sebe
Keyword(s):  
Ir Spectra ◽  
Aromatic Amines ◽  
Free Groups ◽  
Cyanuric Chloride ◽  
Layer Chromatography ◽  
Phenylene Diamine

This work concerns the synthesis of pigments and phtalocyanine dyes obtained through the sulphonation of copper phtalocyanine and amidation with some aliphatic and aromatic amines (lauryl-amine, i-propyl-amine, hexadecyl-amine, stearyl-amine and acetyl-p-phenylene-diamine) with good properties for the electrotechnic utilisation and for toner materials. The pigments with amino free groups are transformed by condensation with cyanuric chloride in phtalocyanine pigments with different tinctorial properties. The dyes were analyzed through the layer chromatography and were characterized on the IR spectra bases and tinctorial tests.

Soap thin-layer chromatography of primary aromatic amines

1978 ◽  
Vol 155 (1) ◽  
pp. 119-127 ◽  
Author(s):  
L. Lepri ◽  
P.G. Desideri ◽  
Heimler
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Aromatic Amines ◽  
Primary Aromatic Amines ◽  
Layer Chromatography

scholarly journals Identification and Isolation of Pharmacologically Active Triterpenes in Betuale Cortex, Betula Pendula Roth., Betulaceae

2009 ◽  
Vol 9 (1) ◽  
pp. 31-38 ◽  
Author(s):  
Elvira E. Kovač-Bešović ◽  
Kemal Durić ◽  
Zdenka Kalođera ◽  
Emin Sofić
Keyword(s):  
Thin Layer ◽  
Ir Spectra ◽  
Column Chromatography ◽  
Betulinic Acid ◽  
Betula Pendula ◽  
Birch Bark ◽  
Good Separation ◽  
Pharmacological Activities ◽  
Pharmacologically Active ◽  
Layer Chromatography

Betulae cortex, Betulapendula Roth., Betulaceae, comprise triterpene substances which are confirmed to posses very important pharmacological activities such as anti-inflammatory, anticancer and antiviral. In this study, extraction of triterpene substances from both, inner and external birch bark was carried out and after that qualitative analysis on betulin, betulinic acid, oleanolic acid and lupeol was performed by method of thin layer chromatography. By this separation method, applying system for development benzene-ethyl acetate-formic acid (36:12:5), is gained a good separation of examined triterpene substances from methanol extracts of inner and external birch bark as well as used standards. From obtained row triterpene mixtures, certain triterpene substances are isolated using method of dry column chromatography. To those substances infrared (IR) spectra were recorded and compared with IR spectra of adequate standards.The study encloses all obtained IR spectra and interpretations on the basis of which can be concluded that triterpene substances, betulin, betulin acid and lupeol isolated from external birch bark give identical characteristic signals and absorbance as referent standards. Method of dry column chromatography has resulted as simple, efficient, repeatable and economical for laboratory conditions. Beside this, a sufficient quantity of examined triterpene substances is also obtained for continuation of their further analytical analysis.

Separation of some aromatic amines by thin-layer chromatography

1964 ◽  
Vol 13 ◽  
pp. 571-572 ◽  
Author(s):  
M. Gillio-Tos ◽  
S.A. Previtera ◽  
A. Vimercati
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Aromatic Amines ◽  
Layer Chromatography
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