Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Reexamination Certificate
2002-06-06
2008-08-19
Oh, Taylor Victor (Department: 1625)
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
C560S051000, C568S629000
Reexamination Certificate
active
07414157
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 R1, R2and R3are 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, R6and n are as defined in the disclosure. This invention further pertains to a compound of Formula III or its enantiomer.
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E. I. du Pont de Nemours and Company
Oh Taylor Victor
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