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. 16, 2003
Filed:
Jul. 02, 2002
William E. Bauta, San Antonio, TX (US);
William R. Cantrell, Jr., San Antonio, TX (US);
Dennis P. Lovett, San Antonio, TX (US);
ILEX Products, Inc., San Antonio, TX (US);
Abstract
The present invention provides a process from preparing isocoumarin-3-yl derivatives comprising reacting a homophthalic anhydride derivative with a carbonyl compound, wherein the carbonyl group is substituted with an acyl activating group, in the presence of a reaction medium comprising a solvent and a base. The invention also encompasses a process for the preparation of homophthalate esters useful in the preparation of homophthalic anhydride reactants as well as an integrated process wherein the twp reactions are carried out sequentially to afford the desired isocoumarin derivative.