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:
Dec. 07, 1993
Filed:
Oct. 16, 1992
Applicant:
Inventors:
Marco Villa, Milan, IT;
Paolo Cavalleri, Milan, IT;
Assignee:
Zambon Group S.p.A., Vicenza, IT;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
549453 ; 549347 ; 549374 ; 549450 ; 549452 ; 549451 ; 568592 ;
Abstract
A process for the selective dehalogenation in position 5 of the naphthalenic nucleus of compounds of formula ##STR1## (wherein X, X.sub.1 and R have the meanings reported in the description) by treatment with a dehalogenating agent selected among hydrogen sulfide, aliphatic thiols or mixtures thereof in an inert anhydrous solvent at acid pH.