Patent ID: 6329555
Filing Date: 2001-12-11
Classification: C07C

Abstract:
A process for preparing substituted butenes of the formula I and/or II, ##STR7##where the radical R is C.sub.2 -C.sub.20 -alkyl, C.sub.2 -C.sub.20 -alkenyl, C.sub.6 -C.sub.10 -aryl, C.sub.7 -C.sub.11 -aralkyl, or methyl, wherein the alkyl and alkenyl groups may be substituted by one or two substituents selected from C.sub.1 -C.sub.10 -alkoxy and hydroxy, by reacting 1,3-butadiene with an alcohol of the formula ROH in which R is as defined above, in the presence of an acidic particulate catalyst insoluble in the reaction medium, which comprises introducing a liquid reaction medium, which contains the butadiene and the alcohol, against the direction of gravity from below into a fluidized bed reactor containing the catalyst, at such a linear velocity that the fluidized bed reactor is operated at above the loosening point.