Process for preparing thymol

Details Process for preparing thymol Process for preparing thymol

1976-06-02

1978-04-25

Thomas, Jr., James O.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260624R, C07C 3906

Patent

active

040862836

ABSTRACT:
Thymol can be prepared on a continuous basis by reacting m-cresol with propylene and/or compounds which eliminate propylene, over aluminum oxide catalysts in the presence of a nitrogen base. The aluminum oxide catalyst is an active or activated hydrated aluminum oxide having a particle size between 0.5 and 20 mm, a BET surface area of at least 200 m.sup.2 /g, a porosity equal to or greater than 0.5 mm/g, a boehmite content of 5 to 40 percent by weight, and an X-ray spectrum which shows the reflections of .gamma.-alumina wherein the content of microcrystalline constituents is less than 50 percent by weight.

REFERENCES:
patent: 1886311 (1932-11-01), Skraup et al.
patent: 1902904 (1933-03-01), Schollkupe et al.
patent: 3968173 (1976-07-01), Klein et al.

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