✍ Scribed by L.A. Avaca; E.R. González; E.A. Ticianelli
No coin nor oath required. For personal study only.
The reactions between benzyl chLoride and radical anions derived from anthracene and 9, lOdiphenylanthracene were studied by cyclic voltammetry and controlled-potential electrolysea in NJVdimethylformamide solutions, for several concentrations of the aromatic hydrocarbons. The controlledpotential electrolyses for direct and catalytic homogeneous reduction of benzyl chloride on mercury showed toluene as being the main product in both cases. These results were used in the formulation of the overall catalytic mechanisms. The application of a new theoretical treatmenl for the cyclic voltammelric results, developed recently by Saveant and coworkers, allowed the establishment of the rate determining step and the calculation of the rate constant for the homogeneous electron transfer reaction between the anthracene radical anion and benzyl chloride. Thii resulted in a value of I.8 x 104 M-'s-l. For 9, l@dipheaylanthracene it was established the existence of a mixed kinetic control under normal experimental conditions. Using very low initial concentrations of the depolarizer it was possible to obtain for the rate constant the valueof5.OxlO"M~'s~'.
📜 SIMILAR VOLUMES
This study reports evidence for the generation of chlorine from NaCl as starting material when aqueous-solution oxidizing materials such as Ce(SO& -4Hz0, Suprov (perisophthalic acid), MPPA (monoperouyphthalic acid) and NaBOs. 4H20 are brought in contact with catalytic amounts of powdered Ru02. Cl2 e