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- W2950741844 abstract "The asymmetric synthesis of α-substituted α-amino acids and propargylamines is described. As chiral auxiliary we used (S)-(–)-1-dimethoxymethyl-2-methoxymethylpyrrolidine (SDMP, 1). Treatment of the amino acids or amines with SDMP 1 afforded the corresponding amidines C, which can be metalated and alkylated to yield the products D, which were hydrolyzed to give the desired α-substituted α-amino acids 20 and propargylamines 22. The method allows the enantioselective alkylation of amino acids and propargylamines in satisfactory chemical yields and fair to good enantioselectivity. The chiral auxiliary SDMP 1 is prepared from (S)-proline in 4 steps." @default.
- W2950741844 created "2019-06-27" @default.
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- W2950741844 date "1984-01-10" @default.
- W2950741844 modified "2023-09-23" @default.
- W2950741844 title "ChemInform Abstract: ASYMMETRIC SYNTHESIS OF α-SUBSTITUTED AMINO ACIDS AND AMINES BY CARBON-CARBON BOND FORMATION IN POSITION α TO THE NITROGEN" @default.
- W2950741844 cites W2006970798 @default.
- W2950741844 doi "https://doi.org/10.1002/chin.198402317" @default.
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