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:
Mar. 23, 1993
Filed:
Aug. 02, 1991
Applicant:
Inventors:
Herbert Gayer, Monheim-Baumberg, DE;
Alexander Klausener, Krefeld, DE;
Peter C Knuppel, Wermelskirchen, DE;
Fritz Maurer, Yuki, JP;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ; C07D / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
546312 ; 560 62 ; 560100 ; 560103 ; 560121 ; 560123 ; 560124 ; 560 17 ; 560 43 ; 560 61 ; 560-01 ; 540288 ; 540289 ; 540296 ; 540297 ; 546300 ; 546307 ; 546310 ; 548183 ; 548184 ; 548190 ; 548191 ; 548194 ; 548243 ; 548244 ; 548245 ; 548246 ; 548247 ; 5483751 ; 548484 ; 548485 ; 548486 ; 5483061 ; 5483071 ; 5483064 ; 548-07 ; 5483097 ; 5483147 ; 5483241 ; 5483261 ; 5483625 ; 5483641 ; 5483701 ; 5483717 ; 5483371 ; 5483285 ;
Abstract
There is described a new process for the preparation of substituted 3-aminoacrylic esters of the general formula (I) ##STR1## in which R.sup.1, R.sup.2, R.sup.3, R.sup.4, X and n have the meaning given in the description. The 3-aminoacrylic esters of the formula (I) are obtained by reacting acetic esters of the formula (II)