Studies on compounds related to pyrazine.  I.  Synthesis of 2-substituted oxazolo(b)quinoxaline.
D006571:Heterocyclic Compounds; D011719:Pyrazines; D011810:Quinoxalines
D006571:Heterocyclic Compounds; D011719:Pyrazines; D011810:Quinoxalines
HETEROCYCLIC COMPOUNDS/preparation of