Preparation of 9,9-bis-(4-hydroxyphenyl)-fluorene

Details Preparation of 9,9-bis-(4-hydroxyphenyl)-fluorene Preparation of 9,9-bis-(4-hydroxyphenyl)-fluorene

1992-02-11

1992-12-08

Lone, Werren B.

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

Organic compounds

Oxygen containing

568718, 568722, 568727, 568733, 568125, 568190, C07C 3912, C07C 3720

Patent

active

051699907

ABSTRACT:
In the production of 9,9-bis-(4-hydroxphenyl)-fluorene by condensation by fluorenone and phenol in a molar ratio of 1:4 to 1:8 at 30.degree. to 90.degree. C. in the presence of gaseous hydrogen chloride and .beta.-mercapto-propionic acid as catalyst, the improvement comprising mixing the completed reaction mixture with a polyalkylene glycol, distilling excess phenol from the mixture, and mixing the distillation residue with a solvent miscible with the polyalkylene glycol, recovering the crystallized product, suspending the crystallized product in water and heating the suspension to obtain highly pure 9,9-bis-(4-hydroxyphenyl)-fluorene as white crystals.

REFERENCES:
patent: 3546165 (1970-12-01), Morgan
patent: 4024194 (1977-05-01), Corn, Jr. et al.
patent: 4049722 (1977-09-01), Corn, Jr. et al.
patent: 4675458 (1987-06-01), Riemans et al.

Affiliated with

Also associated with

Rating

Preparation of 9,9-bis-(4-hydroxyphenyl)-fluorene does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Preparation of 9,9-bis-(4-hydroxyphenyl)-fluorene, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preparation of 9,9-bis-(4-hydroxyphenyl)-fluorene will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-962030