Kinetics of addition of diethylamine to <em>para</em>-substituted ethyl ɑ-cyanocinnamates

Abstract

1092-1094The kinetics of addition of diethylamine to ethyl ɑ-cyanocinnamates and para-substituted ethyl ɑ-cyanocinnamates in acetonitrile at four different temperatures have been followed spectrophotometrically. A step wise mechanism involving the formation of zwitteri-onic addition complex in an equilibrium step followed by conversion into the reaction product via proton transfer has been proposed for the second order addition reaction and this also accounts for the observed structure-reactivity pattern (ρ = 1.02 ±0.11 at 30ᵒC)