53778-72-6Relevant articles and documents
Novel polymer-supported ruthenium and iron complexes that catalyze the conversion of epoxides into diols or diol mono-ethers: Clean and recyclable catalysts
Lee, Sun Hwa,Lee, Eun Yong,Yoo, Dong-Woo,Hong, Sung Jin,Lee, Jung Hwan,Kwak, Han,Lee, Young Min,Kim, Jinheung,Kim, Cheal,Lee, Jin-Kyu
, p. 1579 - 1582 (2008/03/14)
Polymer-supported metal (Fe or Ru) complexes for epoxide ring opening reactions were successfully prepared by anchoring the bis(2-picolyl)amine ligand onto the polymer poly(chloromethylstyrene-co-divinylbenzene) (PCD); the catalysts showed heterogeneous catalytic activity and easy recyclability in the ring opening reactions of various epoxide substrates with methanol or H 2O at room temperature under mild and neutral conditions. The Royal Society of Chemistry and the Centre National de la Recherche Scientifique.
Synthesis, structure and heterogeneous catalytic activity of a coordination polymer containing tetranuclear Cu(II)-btp units connected by nitrates
Yoo, Sang-Kun,Ryu, Ji Young,Lee, Jun Yong,Kim, Cheal,Kim, Sung-Jin,Kim, Youngmee
, p. 1454 - 1456 (2007/10/03)
Synthesis, structure and heterogenous catalytic activity of a coordination polymer containing tetranuclear Cu(II)-btp units connected by nitrates were studied. Blue block-type crystals were obtained from the direct diffusion technique. With acetate counteranions, a discrete Cu(II) molecule was obtained. This polymer is an effective heterogeneous catalyst for regioselective ring opening of epoxide by methanol.
Studies on the Catalytic Oxidation of Alkanes and Alkenes by Titanium Silicates
Khouw, C. B.,Dartt, C. B.,Labinger, J. A.,Davis, M. E.
, p. 195 - 205 (2007/10/02)
Titanium containing, aluminum-free ZSM-5 (TS-1) and amorphous TiO2-SiO2 coprecipitate are investigated as catalysts for the selective oxidation of alkanes and alkenes using a variety of oxidants at temperatures below 100 deg C. Comparisons between the activities of TS-1 and the TiO2-SiO2 coprecipitate for alkane oxidation and alkene epoxidation using nonaqueous H2O2 indicate that the absence of water is crucial for the catalytic activity of silica-supported titanium. Due to the hydrophobicity of TS-1, the concentration of water surrounding the titanium is maintained at a low value, and thus TS-1 can be used as an oxidation catalyst with aqueous H2O2 as oxidant. Alkyl hydroperoxides are active as oxidants for alkene epoxidation on the TiO2-SiO2 coprecipitate but not for alkane oxidation reactions on both TS-1 and the TiO2-SiO2 coprecipitate. A plausible explanation for the above results is provided. The presence of stereoscrambling without any "radical clock" rearrangement during alkane oxidation on TS-1 indicates that the radicals formed may have a very short life-time, or their movements are restricted such that no rearrangement can occur. A proposal for the mechanism of alkane oxidation on TS-1 is given and compared to a mechanism suggested for alkene epoxidation on TS-1 and the TiO2-SiO2 coprecipitate.