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. 20, 1988
Filed:
Jul. 16, 1987
Applicant:
Inventors:
Reinhard Lantzsch, Wuppertal, DE;
Hermann-Dieter Krall, Duesseldorf, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ; C07D / ; C07D / ; C07D / ; C07D / ; C07D / ; C07D / ; C07D / ; C07D / ; C07D / ; C07D / ; C07D / ; C07D / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
544296 ; 544300 ; 544301 ; 544335 ; 544334 ; 544310 ; 544311 ; 544316 ; 544317 ; 544320 ; 544321 ; 544319 ; 544323 ; 544324 ; 544328 ; 544329 ; 544327 ; 544255 ; 544331 ; 544332 ; 544333 ; 544230 ; 558399 ; 558344 ; 558350 ; 558351 ; 546115 ; 546116 ; 546 18 ; 546 19 ; 546263 ; 546280 ; 546284 ; 546283 ; 546318 ; 546326 ; 546327 ; 546287 ; 546296 ; 546297 ; 546298 ; 546307 ; 546310 ; 546301 ; 546302 ; 546312 ; 546330 ; 548183 ; 548184 ; 548187 ; 548188 ; 548 10 ; 548191 ; 548194 ; 548198 ; 548201 ; 548204 ; 548213 ; 548214 ; 548147 ; 548153 ; 549331 ; 549332 ; 549334 ; 549350 ; 549363 ; 549365 ; 549359 ; 549360 ; 549364 ; 549373 ; 549347 ; 549370 ; 549349 ; 549336 ; 549337 ; 549338 ; 549339 ; 549340 ; 549341 ; 549342 ; 549448 ; 549449 ; 549450 ; 549451 ; 549473 ; 549474 ; 549476 ; 549478 ; 549479 ; 549480 ; 549481 ; 549482 ; 549484 ; 549485 ; 549488 ; 549494 ; 549495 ; 549496 ;
Abstract
A process for the preparation of a dimeric aromatic acyl cyanide of the formula ##STR1## in which Ar is optionally substituted phenyl, naphthyl or hetaryl, comprising reaction an acyl halide of the formula