Process for the preparation of hydroxyphenyl-indanols

Details Process for the preparation of hydroxyphenyl-indanols Process for the preparation of hydroxyphenyl-indanols

1981-02-05

1982-06-08

Lone, Werren B.

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

Organic compounds

Oxygen containing

568721, 568727, 568732, 568734, 568736, C07C 3711, C07C 3720, C07C 3912

Patent

active

043341063

ABSTRACT:
An improved process is provided for the preparation of a certain class of hydroxyphenyl-indanol compounds by the cyclization of a phenol selected from the group consisting of an isopropenylphenol, oligomers thereof, and mixtures of any of said group in any combination and proportion, by dissolving said phenol in a stoichiometric excess of an organic acid selected from the group consisting of trifluoroacetic acid, trichloroacetic acid, difluoroacetic acid, dichloroacetic acid, fluoroacetic acid, chloroacetic acid, formic acid, and mixtures thereof at a temperature falling within a range of from about 0.degree. C. to about 90.degree. C. to form a solution; and maintaining said solution at a temperature falling within the above said range until the formation of said indanol is substantially complete.
The dihydroxy compounds produced by the present method are useful in the preparation of epoxy, alkyd, and urethane resins in particular.

REFERENCES:
patent: 2754285 (1956-07-01), Petropoulos
patent: 2819249 (1958-01-01), Petropoulos et al.
patent: 2979534 (1961-04-01), Petropoulos et al.
patent: 3264357 (1966-08-01), Webb et al.
patent: 3264358 (1966-08-01), Webb et al.
patent: 3271463 (1966-09-01), Howard
patent: 3288864 (1966-11-01), Farnham
patent: 4260831 (1981-04-01), Matsuhimi et al.
Kamagami, "Chemical Abstracts", vol. 89, p. 146656c, (1978).

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