Structure Checker : Aromaticity Error

  • Checker searches for GeneralBasic, or Loose aromatic systems that can't be dearomatized or rearomatizing with the given method does not reproduce the initial molecule. Details on aromaticity detection.
  • Fixer offers:
    1. rearomatizing (rearomatize);
    2. dearomatizing the aromatic system (dearomatize).


Example :

Aromaticity Error checker (aromaticity) Warning: Fix
Rearomatize (rearomatize) Dearomatize (dearomatize)
General ex_arom_ch no no
ex_arom_ch no no
Basic ex_arom_ch ex_arom_f ex_arom_f
ex_arom_ch no no
Loose ex_arom_ch ex_arom_f ex_arom_f
ex_arom_ch ex_arom_f ex_arom_f


Note : The 2-pyridone aromatized in general mode is corrected after a checking of aromatization in basic mode.
In this case, both rearomatization and dearomatization fix yields the same structure.