addition of water-resistant carbon radicals to glyoxylic oxime ether provided a new method for the one-pot synthesis of α-amino acids via a carbon–carbon bond formation. The reaction of 2-hydroxy-2-methoxyacetic acid methyl ester with benzyloxyamine and an alkyl radical gave the protected α-amino acids via the stannyl radical-mediated reaction. In the absence of Bu3SnH, the predominant formation of the
glyoxylic imines was studied using zinc dust as a radical initiator. The zinc-mediated radical reaction of glyoxylic oximeethers and hydrazones proceeded smoothly to give the alkylated products via a carbon-carbon bond-forming process in aqueous media. The reaction of the oximeethers and hydrazones having an Oppolzer's camphorsultam group provided the corresponding alkylated products, which could be converted