Oxidation process for the preparation of intermediates useful in the synthesis of diarylpyridines
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United States of America Patent
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Issued Date -
Jul 28, 2005
app pub date -
Apr 5, 2005
filing date -
Dec 19, 2001
priority date (Note) -
Abandoned
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Abstract
An oxidation process for the preparation of intermediates useful in the synthesis of diarylpiridines is described. The oxidation of the thioether of formula III to give the sulfone of formula II is is carried out with a mixture of peracetic acid and hydrogen peroxide as oxidant, in the presence of methanesulphonic acid and in the absence of a catalylst.
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