Brush-type macromolecules (BMs) have attracted much attention over the past decades because of their unique properties and potential applications in nanoscience, drug-delivery systems, photonics. A two-step strategy synthesis polycarbonate-grafted copolymers with either star-shaped or brush-typed morphologies using a “grafting from” approach is reported; backbone these all-polycarbonate graft m...

Cyclic and aromatic hydrocarbons are important components of usual commercial fuels, with C6-rings being among the most abundant cyclic structures. The combustion chemistry involves different levels unsaturation, either as initial fuels (aromatics, naphtenes, …) or intermediates formed during their combustion. In this work ignition delays cyclohexane, cyclohexene, 1,3-cyclohexadiene 1,4-cyclohe...

A highly selective olefin-assisted palladium-catalyzed oxidative carbocyclization via remote olefin insertion to afford cyclohexenes has been developed. It was shown that the assisting olefin moiety was indispensable for the formation of the cyclohexene product. Furthermore, preliminary studies on chiral anion-induced asymmetrical carbocyclization-borylation of enallenes have been carried out.

The synthesis of siloles with substitution patterns that are continuative toward natural product synthesis are described. Their reactivity in Diels-Alder chemistry was explored through thermal, Lewis acid, and high-pressure reactions. Furthermore, bicyclic adducts were oxidatively cleaved to reveal a highly functionalized cyclohexene core.

In this communication we have demonstrated the synthesis of organosilica nanotubes with inner diameter of ∼6 nm and their carbonization to form carbon/silica composite nanotubes. Pd nanoparticles. encapsulated in the organosilica and carbon/silica nanotubes show different catalytic activities in the hydrogenation of cyclohexene.

A series of stable (air, water stable and with good thermal stability) and hydrophobic ionic liquids based upon metal chelate anions were synthesized, which were shown to be effective, mild, and easy to recycle catalysts at the same time stable solvents for the oxidation of cyclohexene.

of niobium clusters with cyclohexene and 1,3-~yclohexadiene makes both the energy and the entropy contribution to the free energy even more favorable for the dehydrogenation reaction. These two factors, the lack of aromatic stability and the increased entropy change, appear to lessen the effect of the relative stability of the Nbs and Nb,,, structures on their reactivity with cyclohexene and 1,...

The effect of impregnation sequence on the formation of Pt/Ni bimetallic nanoparticles supported on g-Al2O3 was investigated for catalysts with Pt/Ni atomic ratios of 3/1 and 1/1. These bimetallic catalysts were prepared with a fixed Pt loading (5 wt.%) by incipient impregnation of one metal precursor and calcination, followed by the impregnation of the second metal precursor and a second calci...

Induced and constitutive microsomal enzymes of mouse and hamster lungs catalyze both the hydroxylation of benzo(alpha)pyrene and reactions that lead to its irreversible binding to macromolecules. For mouse and hamster, the induced lung hydroxylases have Km values of 1.10 and 0.52 muM, respectively. The induced hydroxylases are strongly inhibited by 7,8-benzoflavone and are stimulated by cyclohe...