Concerted process for the production of an alkenyl...

Details Concerted process for the production of an alkenyl... Concerted process for the production of an alkenyl...

2005-02-08

2005-02-08

Dang, Thuan Dinh (Department: 1764)

Chemistry of hydrocarbon compounds

Plural serial diverse syntheses

To produce aromatic

C585S469000, C585S435000

Reexamination Certificate

active

06852896

ABSTRACT:
An integrated process of preparing a C2-5alkenyl-substituted aromatic compound using a C6-12aromatic compound and a C2-5alkane as raw materials. The process involves two reaction steps operating in tandem, the first reaction step reacts the C6-12aromatic compound with hydrogen chloride and molecular oxygen in the presence of a catalyst to yield water and mono-, di-, tri-, and higher chlorinated aromatic adducts. The chlorinated compounds from the first reaction step are reacted with ethane in the second reaction step to produce alkane-substituted aromatic compounds which spontaneously dehydrogenate to an alkenyl-substituted aromatic compound and hydrogen chloride. After separating the alkenyl-substituted aromatic product from the hydrogen chloride, the hydrogen chloride is recycled to the first reaction step so that there is no net production or consumption of hydrogen chloride.

REFERENCES:
patent: 3148222 (1964-09-01), Malone, III et al.

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