“…Acetanilide, azobenzene, and a compound said be (IOI) were isolated in addition to 12% acetaldehyde plus acetone. The authors suggest decomposition of the cyclic adduct into acetaldehyde or acetone and the carbonylimines (99) or (/m). Thus, we would be dealing here with the first representatives of this class of I ,B-dipoles (listed in Table 2).…”