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Zastosowanie promieniowania mikrofalowego w reakcjach utleniania difenylometanu w układach wodoronadtlenek tert-butylu - chlorki metali bloku d

Dworakowska S., Pisarek U., Bednarz S., Bogdał D.

Czasopismo Techniczne. Chemia

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2011

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R. 108, z. 2-Ch

53-58

PL

W artykule przedstawiono wyniki badań dotyczących utleniania difenylometanu za pomocą wodoronadtlenku tert-butylu (TBHP), zarówno w warunkach konwencjonalnych, jak też pod wpływem promieniowania mikrofalowego. Testowanymi katalizatorami były chlorki metali przejściowych bloku d: FeCl[3][.]6H[2]O, CoCl[2][.]6H[2]O, NiCl[2][.]6H[2]O, CrCl[3][.]6H[2]O, CuCl[2][.]2H[2]O, ZnCl[2] oraz jod. Z przebadanych katalizatorów najlepszą aktywność katalityczną wykazywały FeCl[3][.]6H[2]O, CoCl[2][.]6H[2]O, NiCl[2][.]6H[2]O oraz CrCl[3][.]6H[2]O.

EN

The paper presents results of benzylic oxidation of diphenylmethane with tert-butyl hydroperoxide (TBHP) both under conventional and microwave conditions. The catalysts tested were chlorides of transition d-metals: FeCl[3][.]6H[2]O, CoCl[2][.]6H[2]O, NiCl[2][.]6H[2]O, CrCl[3][.]6H[2]O, CuCl[2][.]2H[2]O, ZnCl[2] and iodine. Of all the metal catalysts studied, FeCl[3][.]6H[2]O, CoCl[2][.]6H[2]O, NiCl[2][.]6H[2], CrCl[3][.]6H[2]O showed the best catalytical activity.

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Wybór optymalnego modelu matematycznego procesu na przykładzie konwersji wodoronadtlenku tert-butylu w reakcji epoksydowania 1,5,9-cyklododekatrienu w obecności Mo(CO)6

Lewandowski G., Ćwirko J.

Przemysł Chemiczny

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2009

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T. 88, nr 9

1011-1018

3

Optimization of the epoxidation process of (1Z,5E,9E)-1,5,9-cyclododecatriene to 1,2-epoxy-(5Z,9E)-5,9-cyclododecadiene with tert-buthyl hydroperoxide — the influence of technological parameters on the hydroperoxide conversion

Lewandowski G., Rytwińska E., Milchert E.

Polish Journal of Chemical Technology

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2007

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Vol. 9, nr 3

105-107

EN

The optimization studies of the epoxidation process of (1Z,5E,9E)-1,5,9-cyclododecatriene (CDT) with tert-buthyl hydroperoxide (TBHP) over the molybdenum catalyst Mo(CO)6 were performed. The reaction was examined in terms of a uniform-rotatable design. Three factors were analyzed: the reaction time, CDT:TBHP molar ratio, and the molar concentration of the catalyst (Mo(CO)6). According to the design 20 experiments were performed at the constant temperature of 70°C.

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Comparison of the methods of the phase transfer catalysis and hydroperoxide in the epoxidation of 1,5,9-cyclododecatriene

Lewandowski G.

Polish Journal of Chemical Technology

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2007

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Vol. 9, nr 3

101-104

EN

The process of the epoxidation of cis,trans,trans- 1,5,9-cyclododecatriene (CDT) to 1.2-epoxy-5,9-cyclododecadiene (ECDD) with the 30% aqueous hydrogen peroxide under the phase transfer conditions and with /tert-butyl hydroperoxide under the homogeneous conditions was investigated. Onium salts such as AliquatŽ 336, ArquadŽ 2HT, methyltrioctylammonium bromide and the Na2WO4/H3PO4 catalyst system are very active under the phase transfer catalysis (PTC) conditions for the selective epoxidation of cis,trans,trans-1,5,9-cyclododecatiene (PTC method). These catalytic systems were found to be as active and selective as the homogeneous phase system Mo(CO)6/TBHP (hydroperoxide method).