Epoxydiols are produced in the gas phase from the photo-oxidation of isoprene in the absence of significant mixing ratios of nitrogen oxides (NO(x)). The reactive uptake of these compounds onto acidic aerosols has been shown to produce secondary organic aerosol (SOA). To better characterize the fate of isoprene epoxydiols in the aerosol phase, the kinetics and products of the acid-catalyzed rin...

This work reports on the use of gallium aminotrisphenolate compounds as catalysts for synthesis cyclic carbonates from epoxides and CO2. The results show that they are highly active, more so than corresponding aluminium congeners. catalyst system is applicable at low elevated temperatures across a wide substrate scope including terminal, internal, multiple fully deuterated epoxides. Applying lo...

The two isomeric 20(22)-olefins and the four isomeric 20,22-epoxides of cholesterol have been examined as possible intermediates in the conversion of cholesterol to pregnenolone both by crude extracts of acetone-dried bovine adrenal cortex mitochondria, and by a partially purified cytochrome P-450 specific for the side chain cleavage ( P 4 5 0 ~ ~ ~ ) . The quantities of pregnenolone (measured ...