31383-34-3Relevant academic research and scientific papers
METHOD FOR PRODUCING PYRIDAZINONE COMPOUNDS AND INTERMEDIATE THEREOF
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Page/Page column 277-278, (2012/03/27)
The present invention relates to a novel method for producing a pyridazinone compound and an intermediate thereof as shown in the following scheme: wherein the symbols are as defined in the specification.
Tetra-(tetraalkylammonium)octamolybdate catalysts for selective oxidation of sulfides to sulfoxides with hydrogen peroxide
Yang, Chuanbo,Jin, Qingping,Zhang, Hua,Liao, Jian,Zhu, Jin,Yu, Bin,Deng, Jingen
experimental part, p. 1401 - 1405 (2010/05/02)
Tetra-(tetraalkylammonium)octamolybdate catalysts are successfully applied in the selective oxidation of various sulfides to sulfoxides with 30% aqueous hydrogen peroxide as oxidant under mild reaction conditions in 94-100% yield and 95-100% selectivity. The octamolybdate catalysts show high catalytic activity in a high ratio of substrate to catalyst (up to 10000:1) and are recyclable, with actively functional groups, including hydroxyl group and CC bonds, tolerated in the oxidation. The Royal Society of Chemistry 2009.
Selective and mild oxidation of sulfides to sulfoxides by oxodiperoxo molybdenum complexes adsorbed onto silica gel
Batigalhia, Fabiana,Zaldini-Hernandes, Marcelo,Ferreira, Ant?nio G,Malvestiti, Ivani,Cass, Quezia B
, p. 9669 - 9676 (2007/10/03)
Aliphatic and aromatic sulfides, ketosulfides, sulfinyl acids and esters, and olefinic sulfides were oxidized to sulfoxides using oxodiperoxo complexes of molybdenum coated on silica gel (150 ? pore size) in very high yields. Complete chemoselectivity was observed for the oxidation of all functional sulfides. Sulfones were, however, the main products of the reaction when the complexes were not coated on silica gel. The influence of silica gel as the support of these reactions was also investigated and it was demonstrated that it alters the reactivity of the complex but it is not responsible for the excellent chemoselectivity of the complexes. The complex [MoO(O2)2(pyrazole) (H2O)] proved to be more reactive than [MoO(O2)2(Opyr) (H2O)].
