Preparation of 2,2-diethyltoluene

Details Preparation of 2,2-diethyltoluene Preparation of 2,2-diethyltoluene

1989-10-10

1990-11-27

Sneed, H. M. S.

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By condensation of entire molecules or entire hydrocarbyl...

585468, C07C 268

Patent

active

049737821

ABSTRACT:
A diethyltoluene mixture rich in 2,5-diethyltoluene and containing less tha 5% of the 3,5-diethyltoluene can be prepared by methylating 1,4-diethylbenzene with an excess of methanol in the presence of amorphous silica-alumina catalysts. The most desirable catalysts have a silica:alumina ratio from about 2:1 through about 9:1. Methylation is conveniently effected in a temperature range between about 300.degree. C. and about 450.degree. C. and most desirably in a hydrogen atmosphere.

REFERENCES:
Handbook of Petroleum Refining Processes, edited by Robert A. Meyers, 8-80, et ff., McGraw-Hill Book Company, (1986).

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