Enantiomers of 2-methyl-6-nitro-1,2,3,4-tetrahydroquinoline have been obtained by kinetic resolution of racemic 2-methyl-1,2,3,4-tetrahydroquinoline in acylation with acyl chlorides of N-protected amino acids followed by regioselective nitration of the diastereoisomeric amides and acidic hydrolysis. The introduction of a trifluoroacetyl protecting group into the position 1 of the enantio pure nitro compound followed by the reduction led to (S)-6-amino-2-methyl-1-trifluoroacetyl-1,2,3,4-tetra-hydroquinoline in a high yield.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 5, pp. 805-815, May, 2012.
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Gruzdev, D.A., Levit, G.L., Kodess, M.I. et al. Synthesis of enantiomers of 6-nitro- and 6-amino-2-methyl-1,2,3,4-tetrahydroquinolines. Chem Heterocycl Comp 48, 748–757 (2012). https://doi.org/10.1007/s10593-012-1053-8
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DOI: https://doi.org/10.1007/s10593-012-1053-8