
%0 Journal Article
%A Daly, NJ 
%A Gilligan, MF 
%T The gas-phase reaction of methyl acetate and hydrogen bromide
%J Australian Journal of Chemistry
%D 1971/09/01
%V 24
%N 9
%P 1823-1827
%K 
%R https://doi.org/10.1071/CH9711823
%U https://www.publish.csiro.au/paper/CH9711823 
%X In the gas phase methyl acetate reacts with hydrogen bromide over the range 419-497° to give methyl bromide, carbon monoxide, and methanol. Rate constants first order in both ester and hydrogen bromide are calculated from initial slopes, and are described by the equation                        k2 = 1012.29exp(-32312/RT) ml mol-1 s-1   Kinetic data depart from this second-order form at early stages of the reaction. The addition of methanol can reduce the value of k2 to zero. A mechanism involving the reversible step :                            CH3COOCH3+HBr &#8596; CH3OH+A*   is proposed. The intermediate reacts with isobutene to form mesityl oxide, and is considered identical with that formed in the reaction of acetic acid with hydrogen bromide. 
