No abstract

A brief, efficient method has been developed for the removal of the allyl protecting group from allyl carboxylic esters using a Co­(II)/TBHP/(Me2SiH)2O catalytic system. This facile strategy displays excellent chemoselectivity, functional group tolerance, and high yields. This transformation probably occurs through the hydrogen atom transfer process, and a Co­(III)–six-membered cyclic intermediate is recommended.

Isostructural Ln-CPs (1-Eu and 2-Tb) show almost the same high detection ability for Fe3+ and different detection abilities for aniline. The detection difference was studied through PXRD, UV-vis, luminescence lifetimes and Hirshfeld surface analysis.

The kinetic parameters including Tafel slope, exchange current density and activation energy of methanol oxidation on Pt/C and PtRu/C catalysts in different methanol concentrations (0.1, 0.5, 1, 2 mol-L-1) and different temperatures (30oC, 60oC, 80oC) were evaluated using cyclic voltammetry (CV) and linear sweep voltammetry (LSV). It was found that the exchange current densities of Pt/C were nearly 104 lower than those of PtRu/C, while the activation energies of PtRu/C were larger than those of Pt/C, in particular at low methanol concentrations. The change of rate determination steps was suggested to be mainly responsible for the distinctive characteristics of methanol oxidation on PtRu/C and Pt/C catalysts.