Oligoetherol Synthesis

Great Essays
New method of synthesis of oligoetherols with carbazole ring
Renata Lubczak

Abstract: The new method of synthesis of multifuntional oligoetherols with carbazole ring suitable for obtaining the polyurethane foams of enhanced thermal resistance was presented. At the first step of the synthesis the carbazole was reacted with excess glycidol to obtain the product of (n +1) functionality, where n is number of equivalents of glycidol reacted with carbazole. Carbazole reacts with glycidol without catalyst. The process is exothermic and thus needs control of temperature. Reaction of carbazole with glycidol requires excess of glycidol, the best molar ratio is 1:7. When lower excess of glycidol is used, the carbazole precipitates from reaction mixture. This semiproduct obtained from carbazole and
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Zhang XJ, Tian YP, Li SL, Jiang M, Usman A, Chantrapromma S. Fun HK (2003) Zn(II) and Cd(II) N-carbazolylacetates with strong fluorescences. Polyhedron 22; 397-402. Doi: http://dx.doi.org/10.1016/S0277-5387(02)01360-8
15. Tirapattur S, Belletete M, Drolet N, Leclerc N, Durocher G (200) Steady-State and Time-Resolved Studies of 2,7- Carbazole-Based Conjugated Polymers in Solution and as Thin Films: Determination of Their Solid State Fluorescence Quantum Efficiencies. Chem Phys Letters 370;799-804. Doi: http://dx.doi.org/10.1016/S0009-2614(03)00178-7 16. Lubczak R (2010) Linear Oligoetherols and Polyurethanes with Carbazole Ring, J Appl Polymer Sci 117;16-23. Doi: http://dx.doi.org/10.1002/app.31088 17. Lubczak R (2013) Polyester resins with carbazole ring. Polymer Intern 62; 1243-1249. Doi: http://dx.doi.org/10.1002/pi.4415 18. “Epoxide resins. Method of testing. Determination of the epoxide number and epoxide equivalent”, Polish Standards PN-C-89085-13:1987, Ed. Polish Committee for Standardization, 1987. 19. Kijowska D (2005) Alkylene carbonates with the five-membered ring. Preparation, properties and applications “ Przemysł Chemiczny, 84;

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