Pyrimidine reactions. XI. Amination rates for two chlorodimethylprimidines without solvent

Abstract

Second-order rate constants, Arrhenius parameters, and isokinetic temperatures are presented for the reactions of 2-chloro-4,6-dimethylpyrimidine and 4-chloro-2,6-dimethylpyrimidine with some n-alkyl-, branched alkyl-, and dialkylamines in the absence of a solvent. The differences between these values and those available for the same reactions in a solvent are briefly discussed. An equation is derived for satisfactorily converting the apparent first-order rate constants previously reported by us into second-order rate constants.