Studies on the Reactivity of Some Halogenohydrocarbons with Various Metals. IV. : Retarrding or Promoting Action of Various Alcohols, Phenols, Mercaptans, Amines and Some Others on the Reaction between Iron Powder and Benzyl Chloride

摘要

It was shown in the previous papers that the electro-solution voltage of each metal might be closely correlated to the induction or the rate of the reaction between various metals and benzyl chloride. Futher-more inhibiting or promoting action of some reagents for the reaction between aluminum partic1es and benzyl chloride was reported as an attempt to checking the solvent effect of these reagents on the reaction catalyzed by aluminum chloride. Now using similar additives the reaction between iron powder and benzyl chloride is studied from the same stand-point as is stated above. The result obtained is as follows: (1) Mercaptans, amines and amides showed strong inhibiting action, and alcohols showed moderate inhibiting action, whereas most of phenols, nitrobenzene and aluminum triphenolate showed remarkable promoting action. (2) It is shown that the form of curve representing the inhibiting or promoting effect is deservedly changed with the variety of the additives and also inf1uenced with temperature in cosiderable extent. (3) The promoting effect of nitrobenzene reinforced our suggestion for the presence of suitable range of electric conductivity over which the intermediate complex in the system of catalytic reaction with metallic halide is activated by the ionization or polarization of that in desirable degree. (4) One presumption is offered for the explanation of the promoting action of phenols ascribing to the formation of metallic phenolates as the intermediate of the reaction.