Photocatalytic Synthesis of 1,3-Dioxacyclanes from Diols and Primary Alcohols Effected by a System FeCl3–NaNO2/O2(Air)
作者:A. R. Makhmutov
DOI:10.1134/s1070428018110143
日期:2018.11
Diols and primary alcohols were subjected to the action of a system FeCl3–NaNO2/O2 (air) under mercury lamp irradiation to synthesize unsubstituted and 2-methyl-1,3-dioxacyclanes: 1,3-dioxolane, 1,3-dioxepane, 1,3-dioxocane, 2-methyl-1,3-dioxolane, 2-methyl-1,3-dioxepane, 2-methyl-1,3-dioxocane. The probable mechanism of the photocatalytic synthesis of 1,3-dioxacyclanes was described by an example
The invention relates to substituted carbo- and heterocyclic spiro compounds of the formula Ia which inhibit thiol proteases, to processes for their preparation and to the use thereof as medicaments.
HETEROCYCLIC COMPOUNDS AND THEIR USE AS GLYCOGEN SYNTHASE KINASE-3 INHIBITORS
申请人:Turner Sean Colm
公开号:US20120077840A1
公开(公告)日:2012-03-29
The present invention relates to novel heterocyclic compounds which are useful for inhibiting glycogen synthase kinase 3 (GSK-3), methods of making the compounds, compositions containing the compounds, and methods of treatment using the compounds.
Isomerization and hydrogenolysis of 1,3-dioxacycloalkanes on metal catalysts
作者:Mihály Bartók、József Czombos
DOI:10.1039/c39810000106
日期:——
The isomerization of 5-, 6-, and 7-membered 1,3-dioxacycloalkanes to esters on various metalcatalysts is reported, the hydrogenolysis pattern for this type of compound is determined, and a new reaction mechanism is proposed to interpret these catalytic processes.
Disclosed is a method for removing aldehyde impurities from a methyl acetate supply. The method comprises reacting the methyl acetate supply with a polyol and converting the aldehyde impurities to cyclic acetals. The acetals are subsequently removed from the methyl acetate supply by, e.g., distillation. The purified methyl acetate supply is used for carbonylation to produce acetic acid.