A New Approach to the Efficient Method for the Asymmetric Synthesis of (S)-O-, M-, P-Fluorophenylalanines and Their 2-Methyl-substituted Analogs
2011
Abstract The reactions of asymmetric C-alkylation of glycine and alanine in NiII complexes of their Schiff's bases with modified chiral auxiliaries (S)-2-N-[(N′-2-chlorobenzylprolyl)amino]benzophenone and (S)-2-N-[N′-(3,4-dimethylbenzylprolyl)amino]benzophenone by fluorine-substituted benzyl halogenides have been studied. As a result, a highly stereoselective and relatively rapid method for the asymmetric synthesis of (S)-o-, m-, p-fluorophenylalanines and their 2-methyl substituted analogs has been developed.
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