Method for making 9,9-bis-(4-hydroxyphenyl)-fluorene

Details Method for making 9,9-bis-(4-hydroxyphenyl)-fluorene Method for making 9,9-bis-(4-hydroxyphenyl)-fluorene

1985-10-03

1987-06-23

Lone, Werren B.

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

Organic compounds

Oxygen containing

568719, 568728, C07C 3912

Patent

active

046754580

ABSTRACT:
A method for making 9,9-bis-(4-hydroxyphenyl)-fluorene by reacting fluorenone with phenol at a temperature from 20.degree. to 100.degree. C. in the presence of sulfuric acid of a concentration higher than 70 percent and of a mercaptan, and particularly beta-mercaptopropionic acid, as acidic condensing agents.

REFERENCES:
patent: 2775620 (1956-12-01), Williamson
patent: 3821317 (1974-06-01), Webb
patent: 4024194 (1977-05-01), Corn
patent: 4049721 (1977-09-01), Corn et al.
patent: 4467122 (1984-08-01), Szabolcs
Chem. Abstr. 95, 133593d (1981).
Schnell et al., Angew. Chem. Internat. Edit./vol. 2 (1963)/No. 7, pp. 373-379.
Schultz et al., Archiv der Pharmazie, 288 (1955) 234-246.

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