The synthesis of some 13-lactams is described. 'The electronic activation of monocyclic B-lactams provided by a quinonemethine function was found to instabilize the 13-lactam ring toward nucleophilic: attack by water

A hydrogen polysulfide mediated aziridine ring-opening reaction was discovered. Based on this reaction, a novel H2S(n)-specific chemosensor (AP) was developed. AP showed high sensitivity and selectivity for H2S(n). Notably, the fluorescent turn-on product (1) exhibited excellent two-photon photophysical properties, a large Stokes shift, and high solid state luminescent efficiency.

The ring opening of 2-substituted N,N-dibenzylaziridinium ions by bromide is known to occur exclusively at the substituted aziridine carbon atom via an S(N)2 mechanism, whereas the opposite regioselectivity has been observed as the main pathway for ring opening by fluoride. Similarly, the hydride-induced ring opening of 2-substituted N,N-dibenzylaziridinium ions has been shown to take place sol...

Abstract In spite of the high electrical conductivity carbon nanotube (CNT), its tendency to aggregate and expensive cost in fabricating aerogel, foams, porous materials remains a problem. Therefore, we described simple feasible way design light-weight, electrically conductive, cost-efficient polylactic acid (PLA)/CNT foams. The branched PLA (BPLA) resin with excellent melt elasticity foamabili...

Membrane-based polybenzimidazole (mPBI) emerges as an exciting electrolyte membrane for alkaline fuel cells and water electrolyzers due to its useful ion conductivity range after being doped with aqueous KOH. However, the polymer degradation at highly concentrations limits practical use. Herein, density functional theory (DFT) calculations are used study mechanism of mPBI molecule in solution. ...

The Au(I)-catalyzed reactions of (2-alkynyl)phenylsulfonyl azetidines bearing terminal and non-terminal alkynes in the presence methanol as protic nucleophile to form benzosultams derivatives were studied by density functional theory (DFT) calculations. Our study highlights that gold(I) catalyzed nucleophilic addition nitrogen on alkyne is favored over direct ring opening azetidine methanol, co...

Synthesis of a new class of anionic and amphoteric sucrose-based surfactants is described. Direct sulfonation of 6-O-acylsucrose using the pyridine±sulfur trioxide complex led to a mixture of the regioisomeric monosulfates, 6-O-acyl-40±O-sulfosucrose and 6-O-acyl-10-O-sulfosucrose, while sulfonation of 10-O-acylsucrose a€orded a mixture of 10-O-acyl-60-O-sulfosucrose and 10-O-acyl-6O-sulfosucro...