A process for the manufacture of N-protected .alpha.-aminoketones and N-protected .alpha.-aminoalcohols of the formula ##STR1## wherein X is halogen, one of Q.sup.1 and Q.sup.2 is hydrogen and the other is hydroxy or Q.sup.1 and Q.sup.2 together are oxo, R.sup.1 is an amino protecting group and R.sup.2 is hydrogen or the characterizing group of an .alpha.-aminocarboxylic acid, starting from the corresponding lower alkyl N-protected .alpha.-aminocarboxylates via corresponding lower alkyl N-silyl protected .alpha.-aminocarboxylates.
一种制备N-保护的α-
氨基酮和N-保护的α-
氨基醇的方法,其
化学式为##STR1##其中X为卤素,Q.sup.1和Q.sup.2中的一个为氢,另一个为羟基,或者Q.sup.1和Q.sup.2一起为氧代基,R.sup.1为
氨基保护基团,R.sup.2为氢或者α-
氨基
羧酸的特征基团,从相应的低碳烷基N-保护的α-
氨基
羧酸酯出发,经过相应的低碳烷基N-
硅保护的α-
氨基
羧酸酯。