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R. Lubczak

Synthesis of oligoetherols with a carbazole ring and an azo group

Polimery 2011, No 2, 146


DOI: dx.doi.org/10.14314/polimery.2011.146

Summary

Diols with a carbazole ring were obtained in reactions of 9-(2,3-epoxypropyl)carbazole with water or ethylene glycol or in a reaction of 9-(2-chloroethyl)carbazole with diethanolamine. Then, the diols were further converted in a reaction with excess of ethylene or propylene oxide (EO and PO, respectively) to obtain oligoetherols. The oligoetherols were derivatized into azo compounds by reactions with 2-chloro-4-nitrophenylamine.The compounds were isolated and characterized by elemental analysis, number-average molecular weight (Mn), hydroxyl number (LOH), IR, UV-Vis and 1H NMR spectroscopy. It has been found that the products have enhanced thermal stability in comparison with oligomers obtained from diols containing carbazole ring without azo group.


Key words: diols with a carbazole ring, hydroxyalkylation, diazotization, thermal properties

e-mail: rlubczak@prz.rzeszow.pl

R. Lubczak (324.1 KB)
Synthesis of oligoetherols with a carbazole ring and an azo group