(Z)-4-[(E)-(4-Butylphenyl)diazenyl]-6-{[1,3-dihydroxy-2-(hydroxymethyl) propan-2-ylamino]methylene}-2-methoxycyclohexa-2,4-dienone

Abstract

The title compound, C22H29N3O5, is approximately planar with the aromatic rings in a trans configuration with respect to the azo double bond. The eneamine portion of the molecule exists as the keto-amine tautomer, stabilized by a strong intramolecular N-(HO)-O-... hydrogen bond. Intramolecular N-(HO)-O-... and O-(HO)-O-... and intermolecular O-(HO)-O-... and C-(HO)-O-... interactions influence the conformation of the molecules and the crystal packing.