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:
May. 28, 1991
Filed:
Jun. 08, 1989
Guy P Adrian, Givors, FR;
Delalande S.A., Courbevoie, FR;
Abstract
Method of preparing 4-disubstituted phenyl-1-tetralones of formula ##STR1## in which X represents halogen, C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 alkoxy and Y, situated in position 2' or 3', represents halogen or C.sub.1 -C.sub.4 alkyl, this method being characterized in that it comprises the reaction, in the presence of an acid agent, of .alpha.-naphthol of formula (II) with a phenyl compound of formula (III): ##STR2## where X represents halogen, C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 alkoxy, and Y is situated in the ortho or meta position with respect to X and represents halogen or C.sub.1 -C.sub.4 alkyl.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile