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:
Jul. 12, 1994
Filed:
Apr. 27, 1993
Applicant:
Inventors:
Laurent Weisse, Oberursel, DE;
Heinz Strutz, Usingen, DE;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
568319 ; 568327 ;
Abstract
1-Indanones of the formula III or IIIa ##STR1## in which R.sup.1 to R.sup.7 are preferably hydrogen or alkyl, or adjacent radicals R.sup.1 to R.sup.4 form a ring, are obtained in a one-step reaction by reacting a compound I ##STR2## with a compound of the formula II ##STR3## in liquid hydrogen fluoride.