Amino Acids and Peptides; 70.1Optically Active α-Amino Acids,N-Boc-Aminoaldehydes and α-Amino-β-hydroxy Acid from 2,3-Epoxy Alcohols

All articles of this category Trichloroacetimidic esters of 2,3-epoxy alcohols are transformed into oxazolines 5 and dihydrooxazines 6 , respectively, depending on the structure of the educts and the catalyst. The five-membered ring compounds 5 are transformed into erythro -α-amino-β-hydroxy acids (60-70% from epoxy alcohols) via oxazolidinones 11 , 12 , and 13 . α-Amino acids and α-substituted α-amino acids 10 as well as the corresponding aldehydes 9 are obtained from the dihydrooxazines 6 (50-60% from epoxy alcohols).