Fluoride ion catalyzed isomerization of 2-aryl-F-butenes [1]
作者:Donald J. Burton、James A. Headley
DOI:10.1016/s0022-1139(00)82653-6
日期:1981.10
A kinetic study of the fluorideioncatalyzed isomerization of a series of 2-arylF1-butenes shows the reactions to be pseudo first order in olefin at constant fluorideion concentration. The resultant Hammett plot is non-linear witb a concave downward break near σ=0. A two step mechanism involving formation of a carbanionic intermediate is proposed. A change in the rate limiting step causes the break
The reactions of aromaticketones with trialkyl(trifluorovinyl)silanes in the presence of fluoride ions were studied. The conditions for the selective addition of trialkyl(trifluorovinyl)silanes to the carbonyl function of aromaticketones in the presence of cesium fluoride and absence of any solvents to form the trifluorovinyl containing “silylated” alcohols have been worked out. The analogous reactions