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US 5,847,215 AGranted
Racemization of optically active amines
AssigneeBASF SE
InventorKlaus Ditrich
Life of this patent
Estimating the term…
Abstract
A process for the racemization of optically active amines of the formula (I), where Ar is an unsubstituted or substituted aryl and R is alkyl, in which a) (I) is reacted with the ketone (II) in which Ar and R have the same meanings as for (I), to give the condensation product (III), ##STR1## b) (III) is racemized by treatment with base, ##STR2## c) the arylalkylamine (I) is liberated as racemate from racemic (III) by reaction with optically active (I). ##STR3##
Claims4
A process for the racemization of optically active amines of the formula (I), where Ar is an unsubstituted or substituted aryl and R is alkyl, in which
- a) (I) is reacted with the ketone (II) in which Ar and R have the same meanings as for (I), to give the condensation product (III), ##STR7## b) (III) is racemized by treatment with base, ##STR8## c) the arylalkylamine (I) is liberated as racemate from racemic (III) by reaction with optically active (I), ##STR9##
Dependencies are inferred from the claim text.