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:
Oct. 01, 1985
Filed:
May. 23, 1984
Applicant:
Inventors:
Helmut Hagen, Frankenthal, DE;
Rolf-Dieter Kohler, Edingen-Neckarhausen, DE;
Assignee:
Basf Aktiengesellschaft, Ludwigshafen, DE;
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; C07C / ;
U.S. Cl.
CPC ...
548335 ; 2604 / ; 544165 ; 544402 ; 548164 ; 548191 ; 548199 ; 548338 ; 549 61 ; 564166 ; 564329 ; 564413 ;
Abstract
Phthalimides of the formula I ##STR1## where R is a substituent and the ring A can be further substituted, are cleaved by a process in which a compound of the formula I is treated with an alkanolamine. The compounds prepared according to the invention are useful intermediates for the preparation of dyes, drugs and plastics.