Chemistry of hydrocarbon compounds – Aromatic compound synthesis – By condensation of entire molecules or entire hydrocarbyl...
Patent
1976-06-21
1979-05-22
Gantz, Delbert E.
Chemistry of hydrocarbon compounds
Aromatic compound synthesis
By condensation of entire molecules or entire hydrocarbyl...
585461, C07C 356
Patent
active
041559444
ABSTRACT:
A process for preparing alkylbenzenes, which comprises alkylation of benzene or alkylderivatives thereof with olefines in the presence of a catalyst comprising a product prepared by reacting metallic aluminum with a chlorinated hydrocarbon in a medium of benzene or an alkylbenzene at a weight ratio between metallic aluminum and said chlorinated hydrocarbon ranging from 1:0.08 to 1:17 respectively; said alkylation being conducted at a temperature within the range of from 50.degree. to 180.degree. C. under a pressure within the range of from 2 to 20 atm. The catalyst employed in the process according to the present invention is non-hygroscopic; it is prepared by rather simple technology; said catalyst ensures a high yield of the desired products (up to 80-96% as calculated for the reacted olefine) while retaining a high quality thereof (for example, purity degree of ethylbenzene prepared thereon is 99.9179% by weight). The alkylbenzenes prepared according to the present invention are valuable stock materials for the production of styrene, alpha-methylstyrene and the like.
REFERENCES:
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Buehler et al., Survey of Organic Synthesis, Wiley Interscience, 1970, p. 34.
Uhlig, Chemical Abstracts 49:5192a.
Bakhshi-Zade Amir-Mamed A. O.
Dalin Mark A.
Kasumov Kasum G. O.
Kuliev Tair A. O.
Kyazimov Sabir M. O.
Gantz Delbert E.
Thierstein J.
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