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:
Feb. 23, 1993
Filed:
Dec. 21, 1990
Applicant:
Inventors:
Gerhard Burdinski, Nastatten, DE;
Reinhard Kirsch, Frankfurt am Main, DE;
Hariolf Kottmann, Hofheim am Taunus, DE;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt am Main, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
544298 ; 544334 ; 544335 ; 546173 ; 546174 ; 546290 ; 546301 ; 546302 ; 548160 ; 548165 ; 548187 ; 548204 ; 548225 ; 548226 ; 548236 ; 5483071 ; 5483067 ; 549 62 ; 549 66 ; 549 78 ; 549473 ; 558 10 ; 558 44 ; 558 53 ; 558 57 ; 558454 ; 568 42 ; 568 43 ;
Abstract
A process for preparing a compound I ##STR1## with A=t-butyl, aryl and