Preparation of enantiomerically enriched amine-functionalized compounds
申请人:——
公开号:US20040006225A1
公开(公告)日:2004-01-08
Process for removing a residual fragment of a chiral auxiliary from a diastereomeric compound with formula (2)
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in the preparation of an enantiomerically enriched, amine-functionalized compound, with the diastereomeric compound being subjected to a non-reductive removal of the residual fragment of the chiral auxiliary, the carbon atom that is removed having an oxidation state of +3 which is not lowered during the method of removal.
The chiral auxiliary is preferably chosen from the group of amides or esters of proteogenous amino acids or from the group of phenylglycine amide, an ester of phenylglycine, p-OH-phenylglycine amide, an ester of p-OH-phenylglycine, &agr;-methylphenylglycine amide and an ester of &agr;-methylphenylglycine.