Étude structurale d'aldimines derivées des furanne-, thiophène- et N-méthylpyrrolecarboxaldéhydes-2.I. N-hétéroarylidèneanilines

Abstract

We have studied a series of five N-heteroarylideneanilines, either nitrated or not on the heterocyclic ring, in which the hetero atom can be O, S or N—CH₃. The uv and ¹³C nmr results obtained suggest that these molecules are, as in the case of benzylideneaniline, not entirely planar. In addition, ¹H nmr shows that only a single rotamer exists out of the four possibilities (or, at the limit, a rapid equilibrium between two rotamers). [Journal Translation]