Investigations on the catalytic systems diethylzinc/Di- and trihydroxybenzenes in the copolymerization of carbon dioxide with propylene oxide |
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Authors: | Witold Kuran Stanisaw Pasynkiewicz Jadwiga Skupiska |
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Institution: | Witold Kuran,Stanisław Pasynkiewicz,Jadwiga Skupińska |
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Abstract: | Investigations on the reactions of diethylzinc ( 1 ) with resorcinol ( 2 ) and phloroglucinol ( 8 ) were carried out for different mole ratios of the reactants. It was found that the reaction of 1 with 2 at a mole ratio of 1:1 is a two step process. In the first step 1 reacts very rapidly with half of applied 2 yielding di(ethylzinc) resorcinolate ( 6 ), which then reacts slowly with the remaining amount of 2 . It was found that zinc 3-ethylzincoxyphenolate resorcinolate ( 5 ) formed in the second step is an active catalyst of the copolymerization reaction of carbon dioxide with propylene oxide. The reaction of 1 with 8 shows a similar course. |
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