Patent ID: 8609882

Claim:
A process for the preparation of a N-protected α-aminoaldehyde, in the racemic or optically active form, comprising the steps of: protecting the amine functional group of the corresponding α-aminoacetal with an arylalkyloxycarbonyl group of general formula (I): wherein: R is a hydrogen, a phenyl group or a linear or branched C 1 -C 6 alkyl group, Ar is a phenyl group, a naphthyl group or an anthryl group, optionally substituted by one or more halogen, phenyl, linear or branched C 1 -C 6 alkyl, linear or branched C 1 -C 6 alkoxy, nitro, cyano or methylsulphinyl groups, and deacetalizing the acetal functional group of the said N-protected α-aminoacetal using formic acid.