Process for production of 1,1-dimethyl-6-hydroxyindans

Details Process for production of 1,1-dimethyl-6-hydroxyindans Process for production of 1,1-dimethyl-6-hydroxyindans

1984-01-31

1985-04-09

Lone, Werren B.

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

Organic compounds

Oxygen containing

C07C 3912

Patent

active

045103372

ABSTRACT:
In the production of 1,1-dimethyl-6-hydroxyindans through the reaction of phenols with isoprene or 2,3-dimethyl-1,3-butadiene in the presence of phosphoric acid, an improvement is comprised of using a phosphoric acid concentration of about 100% instead of 85% or less and also of the distillation of the product mixture from a solution containing phosphoric acid of about 95% concentration.

REFERENCES:
patent: 2544815 (1951-03-01), Weaver
patent: 3057929 (1962-10-01), Arrigo
patent: 3152192 (1964-10-01), Wood et al.
patent: 3597472 (1971-08-01), Heiss et al.
patent: 3629337 (1971-12-01), Degginger et al.
patent: 3954889 (1976-05-01), Klein et al.
patent: 4107324 (1978-08-01), Grotkopp et al.

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