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Hydrogen peroxide oxidation of 2-cyanoethanol catalyzed by metal complexes
Abstract Oxidation of 2-cyanoethanol, a relatively inert primary alcohol, with several systems (both homogeneous and heterogenized) based on transition metal complexes was studied. The oxidation was performed under homogeneous conditions with 35% hydrogen peroxide upon catalysis by the chlorides FeCl3 or OsCl3. The best result was obtained upon the oxidation catalyzed by OsCl3 at 70°C for 3 h in the absence of solvent: the total yield of the corresponding aldehyde and cyanoacetic acid reached 90%, and the turnover number was 1500. The systems [LMnIV(O)3MnIVL]n(X)m-oxalic acid (where L = 1,4,7-trimethyl-1,4,7-triazacyclononane) also catalyze oxidation of 2-cyanoethanol with yields of 50–70% either under homogeneous conditions (X = PF− 6, n = 1, and m = 2) or with the use of the catalyst in the heterogenized form (as insoluble heteropoly acid salt), where X = W12SiO4− 40, n = 2, and m = 1.
Hydrogen peroxide oxidation of 2-cyanoethanol catalyzed by metal complexes
Abstract Oxidation of 2-cyanoethanol, a relatively inert primary alcohol, with several systems (both homogeneous and heterogenized) based on transition metal complexes was studied. The oxidation was performed under homogeneous conditions with 35% hydrogen peroxide upon catalysis by the chlorides FeCl3 or OsCl3. The best result was obtained upon the oxidation catalyzed by OsCl3 at 70°C for 3 h in the absence of solvent: the total yield of the corresponding aldehyde and cyanoacetic acid reached 90%, and the turnover number was 1500. The systems [LMnIV(O)3MnIVL]n(X)m-oxalic acid (where L = 1,4,7-trimethyl-1,4,7-triazacyclononane) also catalyze oxidation of 2-cyanoethanol with yields of 50–70% either under homogeneous conditions (X = PF− 6, n = 1, and m = 2) or with the use of the catalyst in the heterogenized form (as insoluble heteropoly acid salt), where X = W12SiO4− 40, n = 2, and m = 1.
Hydrogen peroxide oxidation of 2-cyanoethanol catalyzed by metal complexes
Veghini, D. (Autor:in) / Shul’pina, L. S. (Autor:in) / Strelkova, T. V. (Autor:in) / Shul’pin, G. B. (Autor:in)
Petroleum Chemistry ; 46 ; 167-170
01.05.2006
4 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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