5-Diethyl-amino-2-[(E)-(4-eth-oxy-phen-yl)imino-meth-yl]phenol.

The title compound, C(19)H(24)N(2)O(2), adopts the phenol-imine tautomeric form. An intra-molecular O-H⋯N hydrogen bond results in the formation of a six-membered ring. The aromatic rings are oriented at a dihedral angle of 17.

3-Diethyl-amino-6-[(Z)-(4-hy-droxy-anilino)methyl-idene]cyclo-hexa-2,4-dienone.

In the mol-ecule of the title compound, C(17)H(20)N(2)O(2), the aromatic rings are oriented at a dihedral angle of 6.23 (22)°. Intra-molecular N-H⋯O hydrogen bonding involving the amine H atom and the carbonyl O atom affects the conformation of the mol-ecule.