2,6-dimethylpyridine; tetrabutylammomium bromide in acetone

potassium tert-butylate in tert-butyl alcohol T=50°C; Equilibrium constant;

potassium acetate; acetic acid T=50°C;

trifluoroacetic anhydride in trifluoroacetic acid T=25°C; other temp.; also in TFA-d, and in a mixture TFA, TFA-18O and TFA-18O2; kinetic isotope effect; Rate constantMechanism;