The title compound, C16H17N3O2, was synthesized by the reaction of 4-dimethylaminobenzaldehyde with 3-hydroxybenzoic acid hydrazide in methanol. The dihedral angle between the two benzene rings in the molecule is 9.2 (2)°. In the crystal structure, molecules are linked through intermolecular O—H⋯O, O—H⋯N and N—H⋯O hydrogen bonds, forming layers parallel to the bc plane.
A metal-free route to 1,4-disubstituted and 1,4,5-trisubstituted formyl triazoles was developed. One 1,2,3-triazole containing diastereotopic protons was identified.
The title compound, [Cu(NCS)2(C16H24N2O)2], is a mononuclear copper(II) complex. The Cu atom lies on an inversion centre and is coordinated by two N atoms and two O atoms from two Schiff base ligands, and two N atoms from two thiocyanate anions. The six atoms around the metal constitute a slightly distorted octahedral geometry.
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