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:
Sep. 19, 1989
Filed:
Mar. 08, 1988
Applicant:
Inventors:
Ambrogio Magni, Osnago, IT;
Giuseppina Visentin, Vedano Al Lambro, IT;
Assignee:
Blaschim S.p.A., , IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
568319 ; 568322 ; 568323 ;
Abstract
The acylation of a naphthalene compound, substituted in the 2-position with an electron-donating group, with a reactive derivative of a lower aliphatic acid, in an aprotic organic diluent and in the presence of a Friedel Crafts catalyst consisting of a halide of an element having at least two valences, is improved when maintaining constant at any time the molar ratio of the naphthalene compound to the acylating agent and that of the acylating agent to the Friedel Crafts catalyst within specific ranges.