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:
Nov. 27, 1990
Filed:
Jan. 17, 1989
Applicant:
Inventors:
Claudio Giordano, Monza, IT;
Graziano Castaldi, Briona, IT;
Silvia Cavicchioli, Costermano, IT;
Francesco Minisci, Milan, IT;
Assignee:
Zambon S.p.A., Vicenza, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
546267 ; 549 60 ; 549 73 ; 549267 ; 549274 ; 549473 ; 549483 ; 549498 ; 548517 ; 548518 ; 548562 ; 568319 ; 568386 ; 568397 ; 568435 ; 568483 ; 546174 ; 546315 ; 546284 ; 546283 ; 546281 ; 546275 ;
Abstract
A stereoselective process is described for preparing optically active alpha,beta-disubstituted carbonyl compounds, comprising forming an acetal between an alpha,beta-unsaturated aldehyde or ketone and tartaric acid or a derivative thereof, halogenating the product thus obtained, and restoring the carbonyl compound.
Giordano, Claudio. (1990). Stereoselective process for preparing optically active alpha, (U.S. Patent No. 4973696). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4973696
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile