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2,4-Di-tert-butyl-5,6-dialkylpyrimidines were easily obtained in a one-step reaction from dialkyl ketones and pivalonitrile in the presence of triflic anhydride. pKa values determined show that these compounds can be used as highly sterically non-nucleophilic bases. It was applied to the synthesis of vinyl triflates in which the strong TfOH acid is formed. The results were compared with the obtained using commercially available 2,4,6-tri-tert-butylpyrimidine (TTBP).

2,4-Di-tert-butil-5,6-dialkylpyrimidines: easily prepared alternative to non-nucleophilic hindered bases