Rm. Adlington et al., The efficient, enantioselective synthesis of quinoxaline, pyrazine and 1,2,4-triazine substituted alpha-amino acids from vicinal tricarbonyls, J CHEM S P1, (7), 2001, pp. 668-679
The reaction of diamines and amidrazones with alpha -amino acid vicinal tri
carbonyls has been shown to be a versatile route towards novel heterocyclic
alpha -amino acids. This route is also applicable to parallel synthesis an
d has allowed the formation of a range of heterocyclic amino acid systems.