Antibacterial 2-formyl-quinoxaline 1,4-di:oxide imine derivs. - prepd. e.g. by reaction of benzo:furoxane cpds. with alpha, beta-unsatd aldehyde e.g. crotonaldehyde imine(s)

摘要

New 2-formylquinoxaline 1,4-dioxide imine derivs. are cpds. of formula (I) where R1 and R2 are H or halogen; R3 is alkyl or cycloalkyl; and R4 is H, alkyl or aryl. (I) are useful as intermediates for antibacterially and nutritively active hydrazones of 2-formylquinoxaline 1,4-dioxides (DE 1620114).