Alkylation of phenols

Details Alkylation of phenols Alkylation of phenols

1974-08-09

1976-01-13

Thomas, Jr., James O.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 3906

Patent

active

039325377

ABSTRACT:
Improvement in a method for producing para-alkylated phenols comprising reacting (A) a phenol and (B) an alkylating agent in the presence of (C) an alkylation catalyst and resulting product. This improvement comprises using as (C) an aryl sulfonic acid selected from the class of highly acidic aryl sulfonic acids having a K value of at least 3.8 .times. 10.sup.-.sup.3 including para-chlorobenzene sulfonic acid, 4,4'-diphenyldisulfonic acid, nitrobenzenesulfonic acids, 2,4,6-trinitrobenzenesulfonic acid and meta-benzenedisulfonic acid and also trifluoromethanesulfonic acid. These acid catalysts are also very effective in rearranging ortho and meta substituted phenols to parasubstituted phenols allowing use of normally discarded by-products as starting materials.

REFERENCES:
patent: 2014766 (1935-09-01), Ishom
patent: 2435087 (1948-01-01), Luten et al.
patent: 2793239 (1957-05-01), Toland et al.
patent: 3458449 (1969-07-01), Mausner

Affiliated with

Also associated with

Rating

Alkylation of phenols does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Alkylation of phenols, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Alkylation of phenols will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-747558