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. 31, 1988
Filed:
Dec. 10, 1981
Applicant:
Inventors:
Claudio Giordano, Monza, IT;
Aldo Belli, Novara, IT;
Fulvio Uggeri, Codogno, IT;
Giovanni Villa, Monticello Brianza, IT;
Assignee:
Blasinachim S.p.A., Milan, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; C07C / ;
U.S. Cl.
CPC ...
549 79 ; 560100 ; 560102 ; 560109 ; 560111 ;
Abstract
Process for preparing esters of alkanoic acids via rearrangement of alpha-haloketals in the presence of a Lewis acid. The rection is preferably carried out in the presence of catalytic amounts of a Lewis acid and of a diluent at a temperature in the range from about 0.degree. to the reflux temperature of diluent. The esters thus obtained are useful as intermediate products for preparing drugs. The process involves the preparation of new alpha-haloketals.