Reactivity of Cage-Like Amines toward p-Toluenesulfonyl Chloride and Diphenyl Chlorophosphate in Acetonitrile

The nucleophilic reactivity of amines of the norbornane, norbornene, and adamantane series toward ptoluenesulfonyl chloride and diphenyl chlorophosphate in acetonitrile at 25°C is determined mainly by the steric factor. Parameters characterizing spatial accessibility of the reaction center in the amine molecule have been determined. Cage-like substituents show no appreciable effect on the amine reactivity, as compared to common alkyl groups.     

Kinetic Parameters of Dissolution of Iron(III) Oxides of Varied Thermal and Chemical Prehistory in Hydrochloric Acid

The kinetic parameters of dissolution in hydrochloric acid of Fe₂O₃ (hematite) samples of varied thermal and chemical prehistory are calculated in terms of Delmon's model of instantaneous nucleation on the surface of a solid reagent.