摘要:
Chiral 2‐amino‐butanols (4 and 5) were obtained via the isolation of diastereomeric salt. Then, chiral compounds (6–9) were synthesized by a sequential procedure involving condensation of chiral 2‐amino‐butanol with ketone and dichloroacetyl chloride. All the compounds were characterized by IR, 1H NMR, 13C NMR, and element analysis. The absolute configurations of (S)‐8 was determined by X‐ray crystallography.