Gas phase ion chemistry of methyl acetate, methyl propanoate and their enolic tautomers. An experimental approach

Abstract From a combination of isotopic substitution, time‐resolved measurements and sequential collision experiments, it was proposed that whereas ionized methyl acetate prior to fragmentation rearranges largely into $$ {\rm CH}_3 \mathop {\rm C}\limits^ + ({\rm OH}){\rm O}\mathop {\rm C}\limits^{\rm .} {\rm H}_2 $$ , in contrast, methyl propanoate molecular ions isomerize into $$ \mathop {\rm C}\limits^. {\rm H}_2 {\rm CH}_2 \mathop {\rm …