1822-73-7Relevant articles and documents
Highly efficient atom economical "green chemistry" synthesis of vinyl sulfides from thiols and acetylene in water
Gusarova,Chernysheva,Yas'Ko,Trofimov
, p. 438 - 440 (2013)
Potassium thiolates generated by treatment of thiols with aqueous KOH react with acetylene to give the corresponding vinyl sulfides in 90-95% yields.
Development of a highly efficient catalytic method for synthesis of vinyl ethers
Okimoto, Yoshio,Sakaguchi, Satoshi,Ishii, Yasutaka
, p. 1590 - 1591 (2002)
A new method for the preparation of alkyl vinyl ethers has been developed. Thus, various types of alkyl vinyl ethers were synthesized by the reaction of alcohols with vinyl acetate under the influence of a catalytic amount of [Ir(cod)Cl]2 combined with Na2CO3 in good to excellent yields. Copyright
Electrophilic Chlorine from Chlorosulfonium Salts: A Highly Chemoselective Reduction of Sulfoxides
Acosta-Guzmán, Paola,Mahecha-Mahecha, Camilo,Gamba-Sánchez, Diego
supporting information, p. 10348 - 10354 (2020/07/13)
Herein, we describe a selective late-stage deoxygenation of sulfoxides based on a novel application of chlorosulfonium salts and demonstrate a new process using these species generated in situ from sulfoxides as the source of electrophilic chlorine. The use of highly nucleophilic 1,3,5-trimethoxybenzene (TMB) as the reducing agent is described for the first time and applied in the deoxygenation of simple and functionalized sulfoxides. The method is easy to handle, economic, suitable for gram-scale operations, and readily applied for poly-functionalized molecules, as demonstrated with more than 45 examples, including commercial medicines and analogues. We also report the results of competition experiments that define the more reactive sulfoxide and we present a mechanistic proposal based on substrate and product observations.
Synthesis and characterization of TiO2/Mg(OH)2composites for catalytic degradation of CWA surrogates
?tastny, Martin,?tengl, Václav,Ederer, Jakub,Henych, Jirí,Issa, Gloria,Jano?, Pavel,Kormunda, Martin,Tolasz, Jakub
, p. 19542 - 19552 (2020/06/04)
Surface catalyzed reactions can be a convenient way to deactivate toxic chemical warfare agents (CWAs) and remove them from the contaminated environment. In this study, pure titanium oxide, magnesium hydroxide, and their composites TiO2/Mg(OH2) were prepared by thermal decomposition and precipitation of the titanium peroxo-complex and/or magnesium nitrate in an aqueous solution. The as-prepared composites were examined by XRD, XPS, HRTEM, and nitrogen physisorption. Their decontamination ability was tested on CWA surrogates and determined by high-performance liquid chromatography (HPLC) and gas chromatography coupled with mass spectrometry (GC-MS). Dimethyl methyl phosphonate (DMMP) was used as a G simulant for the nerve agents sarin (GB) and soman (GD) while 2-chloroethyl ethyl sulfide (2-CEES) and 2-chloroethyl phenyl sulfide (2-CEPS) were used as surrogates of sulfur mustard (HD). The activity of the as-prepared composites was correlated with acid-base properties determined by potentiometric titrations and pyridine adsorption studied byin situDRIFTS. The mixing of Ti and Mg led to an increase of the surface area and the amount of surface -OH groups (with an increasing amount of Ti) that caused improved degradation of DMMP.