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Highly efficient oxidation of alcohols by the system "hydrogen peroxide-[LMn(O)3MnL](PF6)2 (L = 1,4,7-trimethyl-1,4,7-triazacyclononane)-oxalic acid"статья
- Авторы: dos Santos Vanessa A., Shul'pina Lidia S., Veghini Dario, Mandelli Dalmo, Shul'pin Georgiy B.
- Журнал: REACTION KINETICS AND CATALYSIS LETTERS
- Том: 88
- Номер: 2
- Год издания: 2006
- Первая страница: 339
- Последняя страница: 348
- DOI: 10.1007/s11144-006-0070-y
- Аннотация: The dinuclear manganese(IV) complex [LMn(O)3MnL](PF6)2 (1, L = 1,4,7-trimethyl-1,4,7-triazacyclononane) catalyzes the extremely efficient oxidation of alcohols with hydrogen peroxide at room temperature. Oxalic acid is an obligatory co-catalyst. The oxidation of isopropanol, for example, yields acetone with turnover numbers up to 40000 after 5-10 h in the absence of a solvent. 2-Cyanoethanol was oxidized by this system with somewhat lower efficiency (conversion 70%). The catalytically active cation from salt 1 was obtained in an insoluble form containing a heteropoly anion [Mn2O3(TMTACN)2]2[SiW12O40]. Oxidation of 2-cyanoethanol using this heterogenized catalyst and oxalic acid gave the oxo-products with the 54% total yield.
- Добавил в систему: Астахов Григорий Сергеевич