| Abstract
| - The kinetic constants and activation parameters for the reactions of Br3- and ICl2- with somealkenes and alkynes have been determined in the ionic liquids [bmim][PF6], [emim][Tf2N],[bmim][Tf2N], [hmim][TF2N], [bm2im][Tf2N], and [bpy][TF2N] (where emim = 1-ethyl-3-methylimidazolium, bmim = 1-butyl-3-methylimidazolium, hmim = 1-hexyl-3-methylimidazolium, bm2im= 1-butyl-2,3-dimethylimidazolium, bpy = butylpyridinium, PF6 = hexafluorophosphate, and Tf2N= bis(trifluoromethylsulfonyl)imide) and in 1,2-dichloroethane. The rates of both reactions increaseon going from 1,2-dichloroethane to ILs. Evidence suggests that, while the hydrogen bonding abilityof the imidazolium cation is probably the main factor able to increase the rate of the addition ofICl2- to double and triple bonds, this property has no effect on the electrophilic addition of Br3- toalkenes and alkynes. Furthermore, in the case of the ICl2- reaction, the hydrogen bonding abilityof ILs can be exploited to suppress the unwanted nucleophilic substitution reaction on the productsby the Cl- anion.
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