Process for preparing hexamethyltetrahydronaphthalenes

Details Process for preparing hexamethyltetrahydronaphthalenes Process for preparing hexamethyltetrahydronaphthalenes

1979-03-12

1981-08-18

Trousof, Natalie

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

585411, 585323, C07C 268, C07C 4546

Patent

active

042848180

ABSTRACT:
1,1,3,4,4,6-Hexamethyl-1,2,3,4-tetrahydronaphthalene (HMT), which is an intermediate for the production of acetyl HMT valuable in the art of perfumery because of its musk-like odor properties, is produced with industrial advantages by reacting p-cymene with 2,3-dimethylbutene using a catalytic amount of an anhydrous aluminum halide in the presence of at least one member selected from secondary alkyl halides, tertiary alkyl halides, propargyl halides and allyl halides; and 7-acetyl HMT is obtained by acetylation of the above-obtained HMT.

REFERENCES:
patent: 2759022 (1956-08-01), Fuchs
patent: 2851501 (1958-09-01), Benz et al.
patent: 3278621 (1966-10-01), Stofberg et al.
patent: 3379782 (1968-04-01), Kahn
patent: 3856875 (1974-12-01), Wood et al.
Wood, T. F. et al., "Polycyclic Musks": J. Org. Chem., vol. 28, pp. 2248-2255 (1963).
Kirk-Othmer, "Encyclopedia of Chemical Technology", vol. 1, pp. 218 and 888, 2nd Ed. (1963).

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