Science Advances

Supplementary Materials

This PDF file includes:

  • table S1. Optimization of reaction conditions for the direct N-ethylation of unprotected amino acids (1a to 1i) with ethanol (2a).
  • table S2. Direct mono-N-isopropylation of an amino acid (1) with isopropanol (2b).
  • table S3. Direct N-alkylation of a free amino acid (1) with various alcohols (2).
  • table S4. Direct N-alkylation of di- and tripeptides (4a to 4b) with alcohols (2).
  • table S5. Iron-catalyzed N-ethylation of amino acids with ethanol (2a).
  • table S6. Iron-catalyzed N-alkylation of unprotected amino acids (1a to 1c) with long-chain aliphatic alcohols (2) to produce surfactants.
  • Spectral data of isolated compounds
  • Determination of the optical purity of products
  • HPLC traces
  • 1H and 13C NMR spectra
  • References (33–45)

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