Appeal No. 2001-0754
Application 09/040,276
THE INVENTION
The appellants claim a method for making 1,2,3,6-
tetrahydro-2,2,6,6-tetramethylpyridine N-oxide, and also claim
a redox catalyst which includes this compound. Claims 1 and
16 are illustrative:
1. A process for the preparation of 1,2,3,6-tetrahydro-
2,2,6,6-tetramethylpyridine N-oxide by the catalytic oxidation
of 1,2,3,6-tetrahydro-2,2,6,6-tetramethylpyridine, comprising
oxidizing 1,2,3,6-tetrahydro-2,2,6,6-tetramethylpyridine with
hydrogen peroxide in an aqueous medium in the presence of an
alkaline earth metal salt or hydroxide as catalyst.
16. A redox catalyst which includes 1,2,3,6-tetrahydro-
2,2,6,6-tetramethylpyridine N-oxide prepared by the process as
claimed in Claim 1.
THE REFERENCES
References relied upon by the examiner
Büschken et al. (Büschken) 5,416,215 May 16,
1995
Büschken et al. (EP ‘667) 0 574 667 Dec. 22,1
1993
(European patent application)
Reference relied upon by the appellant
Wiezer 4,223,148 Sep. 16,
1 Our consideration of EP ‘667 is based upon an English
translation thereof, a copy of which is provided to the
appellant with this decision.
2
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