barium salts of dibenzylidene cystines 8a-c were obtained from the reaction of lcystine with benzaldehyde or its derivatives in the presence of barium hydroxide. their reduction with zinc and hydrochloric acid in methanol yielded the narylmethylcysteines ?9a-c?. these can, in turn, be converted by esterification into the methyl esters ?10 a-c. ?reaction of n, n'-carbonyl diimidazole (im co...

experimental results of dielectric investigations for binary mixtures of 2, 3-butanediol, 2, 3-bd, in2-ethyl-1-hexanol, 2eh, were reported for various mole fractions and temperatures (298.2-308.2) kand they were used to calculate dielectric parameters such as kirkwood correlation factor, excesspermittivity and bruggeman parameter. these parameters were used to carry out temperaturedependent die...

Catalysts applied in cobalt-catalyzed cyclotrimerizations reactions general rely on the use of Co(I) precatalysts or situ generation catalysts from Co(II) sources by reduction presence steering ligands, often addition less noble metals. In this paper, we report synthesis and properties novel stable CpCo(III) complexes as their exemplary evaluation for application catalytic [2+2+2] cycloaddition...