Chemistry of Some [1,2,5]Oxadiazolo[3,4-c]isoquinolines and N-Oxides

Abstract

The reaction of some 4-nitroisoquinolin-3-amines with iodosobenzene diacetate [ PhI ( OAc )₂] is a convenient preparation of the title compound N-oxides. Attempts to convert these into quinoxaline N,N′-dioxides were not successful, but reactions of some 5-substituents are described, along with deoxygenation to the corresponding furazan derivatives.