Frishauf, Holtz, Goodman & Woodward
Process for producing a monoalkenyl aromatic hydrocarbon compound
 There is disclosed a process for producing a monoalkenylbenzene which comprises alkenylating a side chain of an aromatic hydrocarbon compound having at least one hydrogen atom bonded at .alpha.-position of the side chain (such as xylene) with a conjugated diene having 4 or 5 carbon atoms (such as butadiene) in the presence of a catalyst produced by calcining the mixture of potassium hydroxide and aluminum hydroxide and then heat treating the calcined product together with metallic sodium in an atmosphere of an inert gas. According to the aforesaid process, an industrially useful monoalkenylbenzene can be produced in high yield at a low cost with enhanced safety. 
Mitsubishi Gas Chemical Company, Inc.
C C B C
C07C C07C B01J C07C
inventional additional inventional additional
Norio Ko Kinji Makoto
Fushimi Kedo Kato Takagawa