in water; acetone T=15.6 - 35°C; 1 h; kinetics; ΔH(excit.) and ΔS(excit.) of the second and third order reaction; velocity constants in the presence of NEt3; dependence of velocity constants on the composition of acetone - water mixtures, var. conc. oftNEt3 and EtNH2; Thermodynamic dataMechanismRate constant;