LEWIS-ACID INDUCED REARRANGEMENT OF 2,3-EPOXY AMINES AND REGIOSPECIFIC NUCLEOPHILIC TRAPPING OF AZIRIDINIUM ION INTERMEDIATES WITH AMINO-ACID ESTERS - SYNTHESIS OF N(2-AMINO-3-HYDROXYALKYL)-SUBSTITUTED AMINO-ACID ESTERS
Qy. Liu et al., LEWIS-ACID INDUCED REARRANGEMENT OF 2,3-EPOXY AMINES AND REGIOSPECIFIC NUCLEOPHILIC TRAPPING OF AZIRIDINIUM ION INTERMEDIATES WITH AMINO-ACID ESTERS - SYNTHESIS OF N(2-AMINO-3-HYDROXYALKYL)-SUBSTITUTED AMINO-ACID ESTERS, Synlett, (10), 1995, pp. 1037
Rearrangement of homochiral 2,3-epoxy amines by treatment with TMSOTf
gives 3-trimethylsilyloxy-1,2-aziridinium triflates, which undergo eff
icient regiospecific ring opening at C-1 with amino acid ester nucleop
hiles to give N-(2-amino-3-hydroxyalkyl)-substituted amino acid esters
.