Key points are not available for this paper at this time.
The room temperature ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate, bmimPF6, is used as a ‘green’ recyclable alternative to dipolar aprotic solvents for the regioselective alkylation at the heteroatom of indole and 2-naphthol.
Earle et al. (Thu,) studied this question.