The α, α'-dianion III or IV derived from the β-ketosulfoxide I or II reacted with alkyl halide, carbonyl compound, Schiff base, ester, and α, β-unsaturated carbonyl compound to give exclusively the α'-substituted β-ketosulfoxide V or VI.
[EN] METHOD FOR PRODUCING PYRIDAZINONE COMPOUNDS AND INTERMEDIATE THEREOF<br/>[FR] PROCÉDÉ DE PRODUCTION DE COMPOSÉS DE PYRIDAZINONE ET D'UN INTERMÉDIAIRE DE CEUX-CI
申请人:SUMITOMO CHEMICAL CO
公开号:WO2012033225A1
公开(公告)日:2012-03-15
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.
Selective and mild oxidation of sulfides to sulfoxides by oxodiperoxo molybdenum complexes adsorbed onto silica gel
作者:Fabiana Batigalhia、Marcelo Zaldini-Hernandes、Antônio G Ferreira、Ivani Malvestiti、Quezia B Cass
DOI:10.1016/s0040-4020(01)00969-3
日期:2001.11
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 Å 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
Sulfenylation of β-keto sulfoxides. III. Diastereoselectivity induced by a chiral phase transfer catalyst
作者:Blanka Wladislaw、Liliana Marzorati、Francisco C. Biaggio、Reinaldo R. Vargas、Marcelo B. Bjorklund、Julio Zukerman-Schpector
DOI:10.1016/s0040-4020(99)00705-x
日期:1999.10
The asymmetric induction in the sulfenylation of several β-ketosulfoxides under phase transfer catalytic conditions in the presence of the chiral catalyst N-benzylquininium chloride was investigated. It is concluded that the diastereoselectivity is not accompanied by enantiomeric resolution.
METHOD FOR PRODUCING PYRIDAZINONE COMPOUNDS AND INTERMEDIATE THEREOF
申请人:Jachmann Markus
公开号:US20130172556A1
公开(公告)日:2013-07-04
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.