Process for the preparation of 4'-hydroxybiphenyl-4-carboxyl aci

Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

562469, 562508, C07C 0976

Patent

active

047556170

ABSTRACT:
A process for the preparation of 4'-hydroxybiphenyl-4-carboxylic acid by reacting a cyclohexanone-4-carboxylic acid compound with phenol in the presence of an acid catalyst, and then subjecting the resulting 4,4-bis(4-hydroxyphenyl)cyclohexanecarboxylic acid compound to decomposition and dehydrogenation reactions in the presence of a base and a dehydrogenation catalyst. The aforesaid cyclohexanone-4-carboxylic acid compound is obtained by catalytically hydrogenating a 4-hydroxybenzoic acid compound in a secondary alcohol or tertiary alcohol solvent, and the reaction mixture thus obtained is directly used for the reaction with phenol.

REFERENCES:
patent: 3957851 (1976-05-01), Satzinger et al.
patent: 3970694 (1976-07-01), Minai et al.
patent: 4537704 (1985-08-01), Sprecker et al.
Journal of American Chemical Society, 58, 1738 (1936).
Bulletin of the Chemical Society of Japan, 30, 508-13 (1957).
Method der organischen Chemie, vol. 6/1c, No. 2, (1976), p. 1028.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Process for the preparation of 4'-hydroxybiphenyl-4-carboxyl aci does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the preparation of 4'-hydroxybiphenyl-4-carboxyl aci, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of 4'-hydroxybiphenyl-4-carboxyl aci will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2333389

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.