Epoxidedeoxygenation: Hydrotalcite‐supportedgoldnanoparticles (Au/HT) efficiently catalyze the deoxygenation of epoxides to alkenes in water at roomtemperature under CO at atmospheric pressure and in the absence of organic solvents (see graphic). Moreover, Au/HT retains its activity and selectivity and can be reused.
Effect of Anions on the Epoxidation of Styrenes with H<sub>2</sub>O<sub>2</sub>in the Presence of Ammonium Heptamolybdate(VI)– Dioctyltin Oxide Catalysts
The epoxidation of styrene, α-methylstyrene, β-methylstyrene, p-chlorostyrene, and m-divinylbenzene with H2O2 in the presence of ammonium heptamolybdate(VI)–dioctyltin oxide catalysts in CHCl3–H2O was studied. The addition of neutral salts, such as NaNO3 or Na2SO4, to the catalyst system prevented the successive hydration of styrene oxide once formed. The presence of KCl or NaCl almost suppressed the oxidation, while no substantial effect was observed in NaClO4. The various effects of these anions were related to the results concerning the coordination of anions to Mo(VI)-ions.
ANTIHYPERTENSIVE POLYOL COMPOUND AND DERIVATIVE THEREOF
申请人:East China University of Science and Technology
公开号:EP3906969A1
公开(公告)日:2021-11-10
The present invention provides a compound as represented by formula I, or a pharmaceutically acceptable salt or ester, a prodrug, an optical isomer, a stereoisomer, or a solvate thereof. The compound provided by the present invention can be used for preparing drugs for preventing or treating hypertension, or hypertension-related diseases, or pulmonary hypertension, or pulmonary hypertension-related diseases. The compound provided by the present invention has a different mechanism from existing drugs for treating hypertension and pulmonary hypertension, thereby laying a new material foundation for the development of drugs for treating hypertension and pulmonary hypertension.
[EN] VINYL MONOMERS HAVING CHELATING FUNCTIONALITY<br/>[FR] VINYLE MONOMÈRES AYANT UNE FONCTIONNALITÉ CHÉLATANTE
申请人:DOW GLOBAL TECHNOLOGIES LLC
公开号:WO2013066927A1
公开(公告)日:2013-05-10
The present invention provides novel polymerizable monomers having chelating functionality and processes to make them. In particular, the novel monomers are ethylenically unsaturated aminocarboxylates and are prepared by reacting ethylenediamine triacetic acid or its salt with an ethylenically unsaturated monomer. The ethyleneically unsaturated monomer may be a polymerizable vinyl monomer selected from (o-, p-, m-)DVBMO, allyl glycidyl ether, and glycidyl (meth)acrylate.
[EN] PROCESS FOR PREPARING A DIVINYLARENE DIOXIDE<br/>[FR] PROCÉDÉ DE PRÉPARATION D'UN DIOXYDE DE DIVINYLARÈNE
申请人:DOW GLOBAL TECHNOLOGIES LLC
公开号:WO2013070392A1
公开(公告)日:2013-05-16
A process for preparing a divinylarene dioxide including reacting (a) at least one divinylarene, (b) hydrogen peroxide, (c) at least one iron-containing catalyst, and (d) an excess of amine hydrogen halide, under conditions to form a divinylarene dioxide.