Process for the preparation of 2,6-dimethylnaphthalene using a M

Details Process for the preparation of 2,6-dimethylnaphthalene using a M Process for the preparation of 2,6-dimethylnaphthalene using a M

1999-03-31

2000-11-14

Knode, Marian C.

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By alkyl or aryl transfer between molecules, e.g.,...

585471, C07C 1512

Patent

active

061472700

ABSTRACT:
A highly selective process is described for preparing 2,6-dimethylnaphthalene which comprises reacting a naphthalene hydrocarbon selected from naphthalene, methylnaphthalenes, dimethylnaphthalenes, trimethylnaphthalenes, polymethylnaphthalenes or their mixtures with one or more benzene hydrocarbons selected from benzene, toluene, xylenes, trimethylbenzenes, tetramethylbenzenes, pentamethylbenzene and/or hexamethylbenzene, under at least partially liquid phase conditions, in the presence of a zeolite belonging to the structural type MTW and optionally in the presence of a methylating agent.

REFERENCES:
patent: 5003122 (1991-03-01), Fellman et al.
patent: 5670704 (1997-09-01), Hagen et al.
patent: 5672799 (1997-09-01), Perego et al.
"MTW"; internet search record, Dec. 1999.

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