Method of preparing a fluorene derivative and the method of puri

Details Method of preparing a fluorene derivative and the method of puri Method of preparing a fluorene derivative and the method of puri

1994-12-07

1997-05-13

Reamer, James H.

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

Organic compounds

Oxygen containing

568631, 568727, C07C 3912

Patent

active

056294565

ABSTRACT:
A fluorene derivative of high purity is produced by reacting fluorenone with phenoxyethanol in the presence of a sulfuric acid-thiol catalyst system, dissolving the reaction mixture in a lower aliphatic alcohol and adding water to the resulting solution for precipitation of 9,9-bis(4-(2-hydroxyethoxy)phenyl)fluorene [fluorene derivative]. A fluorene derivative of still higher purity is obtained by recrystallization from a lower aliphatic alcohol.
In accordance with this invention, a fluorene derivative can be produced advantageously on a commercial scale without incurring any appreciable loss of fluorenone, in good yield, with high efficiency and in a reduced production time.

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Chen et al, J. Appl. Polymer Sci., vol. 27, pp. 3289-3312 (1982).
Teramoto et al, Chem. Abst, vol. 109, #110, 0492 (1988).

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