Electrochemistry of aminoazines and nitrones: Electrochemical reductions of 2-amino-1,4-pyrazine with nitrones to form amide compounds and electrochemical oxidations of anilines with nitrones to form imine compounds and benzaldehydes

Electrochemical reductions of 2-amino-1,4-pyrazine in the presence of nitro ne derivatives afforded two types of amide compounds, one of which was deri ved from both the pyrazine and the nitrones and the other from only the nit rones. The analogous reactions but using 2-aminopyridine or aniline instead of the pyrazine resulted in the recovery of the starting materials. On the other hand, electrochemical oxidations of the aminoazine derivatives in th e presence of nitrones did not afford any isolatable products. However the reaction using aniline derivatives formed imine compounds accompanied by be nzaldehyde derivatives.