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US 5,347,062 AGranted
Process for preparing alkyl-substituted aromatic hydrocarbons
AssigneeSumitomo Chemical Company, Limited
InventorsMasami Fukao, Takuo Hibi, Kazuo Kimura, Masahiro Usui, Gohfu Suzukamo
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Abstract
An alkyl-substituted hydrocarbon is prepared by alkylating an aromatic hydrocarbon having at least one hydrogen atom at an alpha-position in a side chain with an olefin in the presence of a solid base which is obtainable by heating an alumina, an alkali metal hydroxide and an alkali metal or an alumina containing at least 1.3% by weight of water and an alkali metal in an inert gas atmosphere at a specific temperature as a catalyst.
Claims15
A process for preparing an alkyl-substituted hydrocarbon comprising:
- alkylating an aromatic hydrocarbon having at least one hydrogen atom at an alpha-position in a side chain with an olefin in the presence of a solid base which is obtained by reacting alumina, an alkali metal hydroxide and an alkali metal as follows,
- (a) reacting the alumina with the alkali metal hydroxide under the following conditions,
- (1) at a temperature not lower than 200.degree. C. and lower than 400.degree. C. when said alkali metal hydroxide is potassium hydroxide and said alkali metal is sodium, or
- (2) at a temperature of 200.degree. C. to 600.degree. C. when said alkali metal hydroxide is potassium hydroxide and said alkali metal is other than sodium, or when the alkali metal hydroxide is other than potassium hydroxide;
- and then
- (b) reacting the product of step (a) with the alkali metal at a temperature of 200.degree. C. to 600.degree. C. in an inert gas atmosphere to obtain said solid base.
3 more elements
Dependencies are inferred from the claim text.