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- W2064754069 abstract "A kinetic study of the complex behaviour of ring-substituted α-methoxystyrenes in acidic (HBr) methanol is reported. The reaction yields the corresponding acetals as the only kinetic products; these are subsequently partly hydrolysed into acetophenones with rates only a little lower than those of their formation. The rate-limiting step for methanol addition corresponds to proton attachment to the double bond, yielding an oxocarbenium ion which is trapped by methanol with a rate constant 104 higher than that of ion deprotonation. The rate constants for proton transfer from CH3OH2+ are in the same range of magnitude as those for proton transfer from H3O+ in water. The lyonium ion catalytic constants fit a good Young–Jencks equation with ρn–2.86 and ρr–1.28." @default.
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- W2064754069 date "1987-01-01" @default.
- W2064754069 modified "2023-09-27" @default.
- W2064754069 title "Kinetics and mechanism of acid-catalysed addition of methanol to α-methoxystyrenes" @default.
- W2064754069 doi "https://doi.org/10.1039/p29870001517" @default.
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