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. 28, 1995
Filed:
Jan. 21, 1994
Applicant:
Inventors:
Helmut Kraus, Cologne, DE;
Nikolaus Muller, Monheim, DE;
Gerhard Marzolph, Cologne, DE;
Bernhard Beitzke, Rosrath, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
558375 ; 544161 ; 544162 ; 544163 ; 544171 ; 546192 ; 546230 ; 546238 ; 548566 ; 548571 ; 548572 ; 558384 ; 560-9 ; 560 22 ; 560 23 ; 560 38 ; 560 41 ; 560 43 ; 560147 ; 560156 ; 560170 ; 560171 ;
Abstract
Aminomethylene compounds of the formula ##STR1## may advantageously be prepared by reacting C--H-acidic compounds of the formula ##STR2## with formamide acetals of the formula ##STR3## in which the radicals R.sup.1 to R.sup.6 have the meaning given in the description, if the process is carried out in the presence of a secondary amine of the formula ##STR4## in which R.sup.7 and R.sup.8 have the meaning given in the description.