Figure 2. Substitution pattern of the 2-(substituted benzylidene)malononitrile derivatives.
Twelve 2-(substituted benzylidene)malononitrile derivatives (BMN1-BMN12) were synthesized. All the substituents of hydroxyl, methoxy, ethoxy and bromo are substituted at position 2, 3, 4 or 5 and substituted by 1, 2, or 3 substituents.