Amide-tethered organosilatranes: Syntheses, structural characterization and photophysical properties

A new Pd(II)‐supported catalyst on magnetic SBA‐15 for CC bond formation via the Heck and Hiyama cross‐coupling reactions

“…Magnetite nanocomposite of mesoporous SBA (MNP@SiO 2 ‐SBA) was prepared via embedding MNPs between regular SBA channels. [ 19,24 ] TMSP‐PCA obtained from the reaction between 3‐aminopropyltrimethoxysilane (APTMS) and picolinoyl chloride [ 23 ] was used for the silylation of MNP@SiO 2 ‐SBA. The functionalized magnetic composite was subsequently treated with an ethanolic solution of PdCl 2 in order to prepare MNP@SiO 2 ‐SBA‐PCA‐Pd(II) (Scheme 1).…”

“…TMSP‐PCA was prepared according to the method described by Singh et al [ 23 ] In a round‐bottomed flask, pyridine‐2‐carboxylic acid (1.000 g, 8.00 mmol) and a catalytic amount of N , N ‐dimethylformamide (three drops) were dissolved in the excess amount of freshly distilled thionyl chloride (5 ml) at 0°C under an argon atmosphere and then refluxed for 3 h. Thionyl chloride was distilled off, and the residue was washed with dry petroleum ether (10 ml) and then dried in a vacuum to give pyridine‐2‐carbonyl chloride. The obtained product was suspended in sodium dried THF (30 ml), and triethylamine (3.37 ml, 24 mmol) was added at 0°C under argon.…”

A New Magnetically Retrievable Porous Supported Catalyst for The Suzuki‐Miyaura Cross‐Coupling Reaction

“…Magnetite nanocomposite of mesoporous SBA‐15 (MNP@SiO 2 ‐SBA) was prepared via embedding MNPs between regular SBA‐15 channels . TMSP‐PCA obtained from the reaction between 3‐aminopropyltrimethoxysilane (APTMS) and picolinoyl chloride was used for the silylation of MNP@SiO 2 ‐SBA. The functionalized magnetic composite was subsequently treated with an ethanolic solution of PdCl 2 in order to prepare MNP@SiO 2 ‐SBA‐PCA−Pd(II) (Scheme ).…”

New atranes and similar ionic complexes. Synthesis, structure, properties

“…For example, silatranes. Due to their unusual architecture (the N → Si bond, the pentacoordinated silicon atom, the tricyclic structure), high dipole moment and strong electron‐donating effect of the silatrane skeleton, silatranes are of interest not only as theoretical objects but also as important functional reagents, advanced materials (Si‐organic polyimide films, catalysts, optical probes, adhesion layers for nanoparticles), as well as physiologically and pharmacologically active compounds …”