The present account reviews the most recent noteworthy developments on synthesis, structure and catalytic applications of Zn-NHC species, a class complexes that have attracted attention over past five to ten years due their enhanced robustness hydrolytic stability versus classical Zn organometallics. In particular, thanks NHC stabilization, access unprecedented species were recently achieved, i...

Friedel-Crafts alkylation reaction of vinyltri-methoxysilane with styrene was performed in the pres-ence anhydrous AlCl3. Alkoxy(4-vinylphenethyl)silane has been obtained. The synthesized products were identified by 1H, 13C, COSY NMR, and FTIR spectroscopy. Calculations using quantum-chemical non-empirical density functional theory (DFT) method for between vinyltrimethoxysilane ortho-, meta- pa...

Abstract Enantioselective reactions that install functional groups at the positions of unactivated C−H bonds can be envisioned to produce intermediates for synthesis active ingredients in pharmaceuticals and agrochemicals directly from simple feedstocks. Among these bond functionalization reactions, those form carbon–silicon (C−Si) carbon–boron (C−B) have been pursued because products converted...

A series of rhenium complexes bearing a pyridine-based PNP-type pincer ligand are synthesized from phosphine as precursors. dinitrogen-bridged dirhenium complex the ligands catalytically converts dinitrogen into ammonia during reaction with KC8 reductant and [HPCy3]BArF4 (Cy=cyclohexyl, ArF=3,5-(CF3)2C6H3) proton source at ?78 °C to afford 8.4 equiv based on atom catalyst. The rhenium-dinitroge...

This report discloses a mild and efficient O-acetylation using easily accessible TMSOAc as novel acetyl reagent O-trimethylsilylation HMDS for various alcohols catalyzed by tunable Brønsted acidic ionic liquids (TBAILs). Imidazolium-based TBAILs were prepared two-step atom-economic reaction acidities measured UV-visible spectroscopy. Both protections accomplished at room temperature with good t...

Abstract Structural control of siloxane-based materials at multiple length scales is important for various applications. In this study, we report the controlled assembly cage oligosiloxane building blocks by both intermolecular hydrogen bonding and hydrophobic interactions. A siloxane molecule modified with seven dimethylsilanol groups an octadecyldimethylsilyl group was synthesized stepwise si...

The following aromatic plants of Greek origin, Origanum dictamnus (dictamus), Eucalyptus globulus (eucalyptus), Origanum vulgare L. (oregano), Mellisa officinalis L. (balm mint) and Sideritis cretica (mountain tea), were examined for the content of phenolic substances. Reversed phase HPLC coupled to diode array detector (DAD) was used for the analysis of the plant extracts. The gas chromatograp...