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:
Oct. 04, 2005
Filed:
Feb. 15, 2002
Applicants:
Georg Frater, Winterthur, CH;
Matthias Nagel, Hermetschwil, CH;
Inventors:
Georg Frater, Winterthur, CH;
Matthias Nagel, Hermetschwil, CH;
Assignee:
Givaudan SA, Vernier, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C045/00 ; C07C035/20 ; C07C035/18 ;
U.S. Cl.
CPC ...
Abstract
The present invention relates to a novel thermo-isomerization method for rapidly and simply producing macrocyclic ketones of the formula Ia or Ib. The macrocyclic ketones are prepared in the gas phase at temperatures above 500° C. rapidly and in a simple manner from alcohols of the formula IIa and IIb directly with a high yield. In the formulae Ia, Ib, IIa and IIb, R1-R5, and n have the meanings given in the description.