Preparation of dihydroxydiphenyl alkanes

Details Preparation of dihydroxydiphenyl alkanes Preparation of dihydroxydiphenyl alkanes

1976-12-30

1978-08-29

Morgenstern, Norman

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

Organic compounds

Oxygen containing

C07C 3718, C07C 3916

Patent

active

041105427

ABSTRACT:
A process is described for preparing 4,4'-dihydroxydiphenylethane by reacting phenol with a 1,2-dihaloethane in which the halogen is chlorine, bromine or iodine, in at least the stoichiometric proportions of 2:1 in contact with a catalyst comprising lanthanum oxide supported on an inorganic material such as silica at a temperature from about 125.degree. to about 225.degree. C. and in the presence of a hydrogen halide as a promoter.

REFERENCES:
patent: 3280201 (1966-10-01), Hamilton et al.
patent: 3426358 (1969-02-01), Schlichting et al.
patent: 3463824 (1969-08-01), Velling
patent: 3790641 (1974-02-01), Oshuma et al.
patent: 3857899 (1974-12-01), Tasaka et al.
Vestn. Khar'kov, "Politekh. Inst.," 1971, No. 60, 61-64.

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