Method of producing halogenated and alpha-aminoalchohols

Details Method of producing halogenated and alpha-aminoalchohols Method of producing halogenated and alpha-aminoalchohols

1995-08-21

1996-06-04

Dees, Jose G.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

560148, 560161, 564186, 564224, C07C26100

Patent

active

055234631

ABSTRACT:
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.

REFERENCES:
patent: 5157041 (1992-10-01), Handa et al.
patent: 5196438 (1993-03-01), Martin et al.
patent: 5430041 (1995-07-01), Martin et al.
patent: 5451678 (1995-09-01), Parkes et al.
patent: 5455353 (1995-10-01), Hilpert

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