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. 27, 1983
Filed:
Mar. 29, 1982
Applicant:
Inventors:
Vincenzo Cannata, Borgo Nuovo di Pontecchio Marconi, IT;
Giancarlo Tamerlani, Pontecchio Marconi, IT;
Assignee:
Alfa Chemicals Italiana S.p.A., Milan, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
562466 ; 26050117 ;
Abstract
A new process for the preparation of the d-2-(6-methoxy-2-naphthyl)-propionic acid of formula ##STR1## which comprises resolving a racemic mixture of the d- and 1-2-(5-halo-6-methoxy-2-naphthyl)-propionic acids of formula ##STR2## wherein halo stands for a halogen atom, recovering the d-isomer and subjecting this isomer to catalytic dehalogenation. Compound I is obtained in very high yields and with a high purity degree.