Process for the preparation of 1,2,4,5-dimethyldiisopropylbenzen

Details Process for the preparation of 1,2,4,5-dimethyldiisopropylbenzen Process for the preparation of 1,2,4,5-dimethyldiisopropylbenzen

1997-08-18

1998-09-15

Caldarola, Glenn

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By condensation of entire molecules or entire hydrocarbyl...

585323, 585466, 585804, 585812, C07C 270, C07C 714

Patent

active

058081690

ABSTRACT:
A process for preparing 1,2,4,5-dimethyldiisopropylbenzene includes conducting alkylation of p-xylene with propylene to produce an alkylation product, and crystallizing the alkylation product. A heteropolyacid-supported catalyst can be used as an alkylation catalyst for the reaction. The reaction solution produced from the alkylation reaction can be distilled before crystallization to improve yield and purity even more.

REFERENCES:
patent: 5202516 (1993-04-01), Lee et al.
patent: 5254766 (1993-10-01), Fujita et al.
patent: 5488194 (1996-01-01), Beck et al.
Derwent Abstract-68:104964, "Preparation of 1,4-dimethyl-2,5-diisopropylbenzene", Babin et al, USSR, 1967.

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