Resolution of racemic amino acids by gas chromatography. IV. N-trifluoroacetyl-L-prolyl amino acid n-butyl esters.
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چکیده
منابع مشابه
Asymmetric α-2-tosylethenylation of N,N-dialkyl-L-amino acid esters via the formation of non-racemic ammonium enolates.
Asymmetric α-2-tosylethenylation of (S)-2-(pyrrolidin-1-yl)propanoic acid esters was shown to produce good yields with high enantioselectivities. The reaction proceeds via the formation of a non-racemic ammonium enolate without an external source of chirality.
متن کاملAMINO ACIDS Gas Chromatography
New York: John Wiley. Grob RL (ed.) (1995) Modern Practice of Gas Chromatography, 3rd edn. New York: John Wiley. Heftmann E (ed.) (1992)Chromatography, 5th edn. Part B: Applications. (Journal of ChromatographyLibrary, Vol. 51B). Amsterdam: Elsevier. Hyver KJ and Sandra P (eds) (1989) High Resolution Gas Chromatography, 3rd edn. Delaware: Hewlett-Packard. Kataoka H (1996) Derivatization reaction...
متن کاملEnantioseparation of chiral amino acids as the N(O,S)-ethoxycarbonylated diastereomeric esters by achiral dual-capillary column gas chromatography.
The enantioseparation of 30 racemic amino acids in a single analysis is described for the determination of their absolute configurations. Two-phase extractive ethoxycarbonyl (EOC) reaction with ethyl chloroformate present in the dichloromethane phase was performed to recover amino acids from alkaline aqueous solutions. The resulting N(O,S)-EOC amino acids extracted into an organic solvent after...
متن کاملCorrection: Mechanochemical enzymatic resolution of N-benzylated-β3-amino esters
[This corrects the article DOI: 10.3762/bjoc.13.167.].
متن کاملMechanochemical enzymatic resolution of N-benzylated-β3-amino esters
The use of mechanochemistry to carry out enantioselective reactions has been explored in the last ten years with excellent results. Several chiral organocatalysts and even enzymes have proved to be resistant to milling conditions, which allows for rather efficient enantioselective transformations under ball-milling conditions. The present article reports the first example of a liquid-assisted g...
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ژورنال
عنوان ژورنال: Chemical and Pharmaceutical Bulletin
سال: 1974
ISSN: 0009-2363,1347-5223
DOI: 10.1248/cpb.22.2075