The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 17, 1980
Filed:
Dec. 21, 1976
Applicant:
Inventors:
Michel Costantini, Lyons, FR;
Adrien Dromard, Paris, FR;
Michel Jouffret, Francheville le Bas, FR;
Roland Nantermet, Lyons, FR;
Assignee:
Rhone-Poulenc Industries, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
568771 ; 568800 ;
Abstract
Aromatic compounds of the general formula ##STR1## in which R and R.sub.o represents a hydrogen atom or an alkyl radical of 1 to 4 carbon atoms are hydroxylated by reaction with hydrogen peroxide in the presence of a catalytic amount of a strong acid and the reaction is carried out in the presence of an activator which is a juxtanuclear aromatic aldehyde or derivative thereof selected from an acetal or a benzhydrol.