Process for preparing butanone derivatives
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United States of America Patent
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Jun 1, 1999
Grant Date -
N/A
app pub date -
Jul 14, 1997
filing date -
Jan 12, 1995
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Abstract
A process for the preparation of a saturated butanone having a terminal substituted aryl group (I) by the selective reduction of an aryl-substituted .alpha.,.beta.-unsaturated butanone (II) is presented. The aryl moiety can be mono- or polysubstituted by one or more C.sub.1 -C.sub.6 alkoxy, methylenedioxy or hydroxyl radicals and R is a C.sub.1 -C.sub.6 radical. The .alpha.,.beta.-unsaturated butanone (II) is subjected to the action of the enzymes of a yeast or of a filamentous fungus to give a mixture of (I) and an alcohol (III). (I) and (III) are isolated and purified. (III) can be enzymatically oxidized to provide (I).
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