The thermal decompositions of casbamates. III. Ethyl N,N-dimethylcarbamate and the effect of N-substitution upon the β-elimination
NJ Daly, GM Heweston and F Ziolkowski
Australian Journal of Chemistry
26(6) 1259 - 1262
AbstractEthyl N,N-dimethylcarbamate thermolyses to, N,N-dimethylamine, carbon dioxide, and ethylene in a homogeneous molecular reaction. First-order rate constants are described in s-1 units by the equation log k = 12.10-(44340±400)/θ where θ = 4.576T. The pattern of substituent effects for N-substitution and values of ΔS? for several N-substituted carbamates show that ring closure through the carbonyl oxygen is favoured over the alternative cyclization involving the nitrogen atom.
© CSIRO 1973