CHEM 203 Lecture Notes - Lecture 5: Carbonium Ion, Electrophilic Addition, Chloroethane
Document Summary
Carbocations, carbonium ions: the (+)-charged, highly lewis acidic carbon fragments obtained upon protonation of alkenes. Cl a carbocation (carbonium ion) (ethyl cation in this case) H chloroethane or ethyl chloride: an alkyl halide. The above transformation as an addition reaction: a process that involves the union of two molecules to produce a new chemical individual. Addition reactions: typical reactions of alkenes and of systems in general. These processes may be represented with the following general equation (which says nothing about mechanism): Substrate: the organic compound that undergoes the reaction (c=c in the above reaction) Reagent: the species that acts upon the organic compound undergoing the reaction (a b in the above reaction) Description of the addition of hcl to ethylene as an electrophilic addition, because it is initiated by the interaction of the substrate with an electrophile (the proton carried by hcl)
