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:
Aug. 09, 1988
Filed:
Mar. 18, 1986
Pietro Cesti, Novara, IT;
Paolo Piccardi, Milan, IT;
Montedison S.p.A., Milan, IT;
Abstract
There is described the preparation of S(+) alpha-aryl-alkanoic acids by means of the reaction of a racemic ester(R,S) of the formula: ##STR1## wherein: R is a group selected from the group consisting of --C.tbd.CH, a --CH.dbd.CH.sub.2, --CN; --COCH.sub.3, --COO alkyl C.sub.1 C.sub.4 and --CH.sub.2 --O alkyl C.sub.1 -C4 group, Ar is a group selected from the group consisting of an aryl group and an aryl substituted or condensed with other groups, in particular a group selected from the group consisting of groups of the formula: ##STR2## wherein: R' is selected from the group consisting of C.sub.1 -C.sub.8 linear or branch of chain alkyl, C.sub.1 -C.sub.4 alkenyl, alkoxy, phenyl, phenoxy, tenoyl and heterocyclic;