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

A method for making 9,9-bis-(4-hydroxyphenyl)-fluorene by reacting fluorenone with phenol at a temperature from 20 DEG to 100 DEG 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 agent...

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Bibliographic Details
Main Authors UDE; WERNER, RIEMANN; ACHIM
Format Patent
LanguageEnglish
Published 23.06.1987
Edition4
Subjects
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Summary:A method for making 9,9-bis-(4-hydroxyphenyl)-fluorene by reacting fluorenone with phenol at a temperature from 20 DEG to 100 DEG 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.
Bibliography:Application Number: US19850783463