Process for racemization of n-acylamino acids by means of transition metal catalysts
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United States of America Patent
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Aug 20, 2002
Grant Date -
Oct 18, 2001
app pub date -
Mar 12, 2001
filing date -
Mar 18, 2000
priority date (Note) -
Expired
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Abstract
The present invention relates to a process for the racemization of N-acylamino acids of the formula (I) R--CH(NR.sup.1 COR.sup.2)CO.sub.2 H (I) in which, in a solvent, an enantiomerically enriched mixture or an enantiomerically pure compound of the formula (I) is reacted in the presence of a transition metal salt, transition metal complex or transition metal complex salt or of a mixture thereof comprising at least one element from the group consisting of Fe, Ru, Os, Co, Rh, Ir, Ni, Pd, Pt, preferably at a temperature of 10-150.degree. C.
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