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. 22, 1977
Filed:
Jan. 23, 1976
Applicant:
Inventors:
Helmut Waldmann, Leverkusen, DT;
Wulf Schwerdtel, Leverkusen-Steinbuechel, DT;
Wolfgang Swodenk, Odenthal-Gloebusch, DT;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
260483 ; 260404 ; 2604045 ; 260408 ; 2604105 ; 2604 / ; 2604 / ; 2604654 ; 2604 / ; 2604 / ; 2604 / ; 2604 / ; 2604 / ;
Abstract
A process for the production of an .omega.-formyl carboxylic acid ester, comprising reacting an enol ether of a cyclic ketone with hydrogen peroxide in the presence of at least one catalyst selected from the group consisting of a compound of boron or of a metal of the Fifth or Sixth Secondary Group of the Periodic Table. Advantageously the enol ether has the formula ##STR1## wherein R.sub.1 is alkyl of 1 to about 3 carbon atoms, cycloalkyl of 5 or 6 carbon atoms or phenyl optionally substituted by fluorine, chlorine, alkoxy of 1 to about 3 carbon atoms, cyano or phenyl,