Chemistry of hydrocarbon compounds – Aromatic compound synthesis – By condensation of entire molecules or entire hydrocarbyl...
Patent
1993-04-15
1994-08-02
Pal, Asok
Chemistry of hydrocarbon compounds
Aromatic compound synthesis
By condensation of entire molecules or entire hydrocarbyl...
585435, 585438, 585467, C07C 272
Patent
active
053347943
ABSTRACT:
A process for producing a monoalkenyl aromatic hydrocarbon compound which comprises alkenylating a side chain of an aromatic hydrocarbon compound having at least one hydrogen atom bonded at an .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 comprising a mixture obtained by heat treating metallic sodium together with a mixture of a zirconium oxide and a potassium compound in an inert gas atmosphere. An industrially useful monoalkenyl aromatic hydrocarbon compound is produced in a high yield at a low cost with enhanced safety from a specific aromatic hydrocarbon compound and a specific conjugated diene compound.
REFERENCES:
patent: 3244758 (1966-04-01), Eberhardt
patent: 3839485 (1994-10-01), Wrisberg et al.
patent: 4977124 (1990-12-01), Smith
Fushimi Norio
Inamasa Kenji
Kedo Ko
Takagawa Makoto
Achutamurthy P.
Mitsubishi Gas Chemical Company Inc.
Pal Asok
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