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Nanostructured silicon carbide (SiC) is an exceptional material with numerous applications, for example, in catalysis, biomedicine, high‐performance composites, and sensing. In this study, a fast and scalable method of producing nanostructured SiC from plant materials by magnesiothermic reduction via self‐propagating high‐temperature synthesis (SHS) route was developed. The produced biogenic material possessed a high surface area above 200 m2/g with a SiC crystallite size below 10 nm, which has not been done previously by SHS. This method enables affordable synthesis of the material plant‐based precursors in a reaction that only takes a few seconds, thereby paving a way for nanostructured SiC production in high volumes using renewable resources. The material was also functionalized with carboxylic acid and bisphosphonate moieties, and its use as metal adsorbent in applications such as wastewater remediation was demonstrated. [ABSTRACT FROM AUTHOR]

The article discusses the synthesis of a novel single hybrid monomer combining a vinylether and trimethoxysilane groups in the same molecule through chemoselective hydrosilation. It was also subjected to ultraviolet (UV)-irradiation in the presence of a triarylsulfonium salt. A type II polyvinyl-polysilicate nanocomposite film resulted from the simultaneous occurrence of two acid-catalyzed processes. Parameters such as laminated conditions, UV irradiation equipment and film thickness were also investigated.

The two title 5-oxa-2,6-di­aza­spiro­[3.4]­octan-1-one adducts, 7-benzoyl-2-(4-methoxy­phenyl)-6-phenyl-5-oxa-2,6-di­aza­spiro­[3.4]­octan-1-one, C25H22N2O4, (III), and 6- tert-butyl-2-(4-methyl­phenyl)-7-phenyl-5-oxa-2,6-di­aza­spiro­[3.4]­octan-1-one, C22H26N2O2, (IV), were obtained from a stereospecific [3+2] 1,3-cyclo­addition of 3-methyl­ene azetidin-2-ones as dipolaro­philes with nitro­nes. The lactam ring is conjugated with the p-­methoxy­phenyl or p-methyl­phenyl moiety. The envelope conformations of the isoxazolidine rings in (III) and (IV) are different, leading the substituents to be pseudo-axial in (III) and pseudo-equatorial in (IV). [ABSTRACT FROM AUTHOR]