Chemistry of hydrocarbon compounds – Aromatic compound synthesis – By ring formation from nonring moiety – e.g. – aromatization,...
Patent
1989-01-27
1989-10-31
Dixon, Jr., William R.
Chemistry of hydrocarbon compounds
Aromatic compound synthesis
By ring formation from nonring moiety, e.g., aromatization,...
585410, 585452, 585459, C07C 1200, C07C 1264, C07C 264
Patent
active
048779105
ABSTRACT:
A process is disclosed for the production of polyalkyl tetrahydronaphthalenes is disclosed wherein a cyclialkylation reaction between an olefinic compound of the general Formula ##STR1## wherein R.sup.4, R.sup.5, and R.sup.6 are independently defined and each represents a substituent which does not substantially interfere with a Friedel-Crafts type reaction and where R.sup.5 and R.sup.6 are other than H, and a substituted benzene compound is carried out in the presence of a hydride abstracting reagent, an alkyl halide or hydrogen halide, a Lewis acid, and, optionally, a phase transfer agent. In some embodiments, the subject process is specifically carried out in the absence of elemental iodine. The subject process produces the desired compounds in a surprisingly high yield, with a surprisingly high selectivity to the desired product, and at a relatively high rate of reaction, using better, more convenient, or less expensive process methodology than many processes known heretofore.
REFERENCES:
patent: 3856875 (1984-12-01), Wood et al.
patent: 4551573 (1985-11-01), Cobb
Dixon Jr. William R.
Saba J.
Sites Edward J.
Union Camp Corporation
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