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:
Aug. 19, 2008
Filed:
Jun. 06, 2002
Albert Loren Casalnuovo, Wilmington, DE (US);
Albert Loren Casalnuovo, Wilmington, DE (US);
E. I. du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
The present invention pertains to a process for preparing a compound of Formula I that is achiral, racemic or enantiomerically enriched at the hydroxylation center indicated by comprising contacting a compound of Formula II with an oxidant selected from oxygen, hydrogen peroxide, peracids or alkyl hydroperoxides in the presence of a zirconium complex, wherein R, Rand Rare as defined in the disclosure. This invention also pertains to zirconium complexes useful in this procedure comprising zirconium and a ligand of Formula III or its enantiomer wherein J, Rand n are as defined in the disclosure. This invention further pertains to a compound of Formula III or its enantiomer.