Process for preparing monomethylated or dimethylated phenols

Details Process for preparing monomethylated or dimethylated phenols Process for preparing monomethylated or dimethylated phenols

1996-11-22

1998-03-03

Shaver, Paul F.

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

Organic compounds

Oxygen containing

568607, 568609, 568659, 568660, 568662, 568626, C07C 3700

Patent

active

057236941

ABSTRACT:
Phenols monomethylated or dimethylated in the ortho or para position to the OH group and having the formula ##STR1## can be prepared by reaction of tert-alkyl-substituted phenols of the formula ##STR2## in which at least one free ortho or para position to the OH group is present, in three reaction steps a), b) and c). In a), (II) is reacted with formaldehyde or its polymers and a carboxylic acid of the formula

REFERENCES:
patent: 4475001 (1984-10-01), Leston
patent: 4480140 (1984-10-01), Leston
patent: 4538009 (1985-08-01), Goetz et al.
patent: 4769501 (1988-09-01), Iwahara et al.
K-D. Bode, V. Herstellung von Phenolen bzw. Phenol-Derivaten aus anderen Phenolen unter Erhaltung der phenolischen Funktion, Methoden der Organischen Chemie (Houben-Weyl), Band VI/lc, p. 925, (1976).
B. Delmon, et al., Zeolites as Catalysts, Sorbents and Detergent Builders Applications and Innovations, Studies in Surface Science and Catalysis, vol. 46, pp. 168-179, (1989).
H. Fiege, Ullmann's Encyclopedia of Industrial Chemistry, Fifth, Completely Revised Edition, Cresols and Xylenols, vol. A 8, p. 25 (1975).

Affiliated with

Also associated with

Rating

Process for preparing monomethylated or dimethylated 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 Process for preparing monomethylated or dimethylated phenols, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparing monomethylated or dimethylated phenols will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2249811