Cyclization catalyst

Details Cyclization catalyst Cyclization catalyst

1986-10-31

1988-04-26

Davis, Curtis R.

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By ring formation from nonring moiety, e.g., aromatization,...

585417, 585418, C07C 1200

Patent

active

047406470

ABSTRACT:
Cyclization of aliphatic moieties of 3-20 carbons which comprises contacting a suitable starting compound comprising the aliphatic moiety with a catalyst comprising at least one member selected from the group consisting of copper aluminum borate and zero valent copper on a support comprising aluminum borate under appropriate reaction conditions to obtain a compound having at least one more cyclic moiety than the starting compound. Preferably, the aromatic which undergoes cyclization is an alkenyl group attached to an aromatic nucleus. The present invention can be used to dehydrocyclize alkenylbenzenes to alkylnaphthalenes. In particular, 5-(o-tolyl)pentene can be dehydrocyclized to mixtures of 1,5-, 1,6-, and 2,6-dimethylnaphthalene.

REFERENCES:
patent: 4024171 (1977-05-01), McArthur

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