(6Z)-3-Di­ethyl­amino-6-(3-hy­droxy­anil­ino­methyl­ene)cyclo­hexa-2,4-dien-1-one

In the title mol­ecule, C17H20N2O2, the angle between the mean planes of the 3-hydroxy­phenyl and cyclo­hexa-2,4-dien-1-one rings is 10.7 (7)°. Intra­molecular N—H⋯O hydrogen bonding involving the amine H atom and the carbonyl O atom affects the conformation of the mol­ecule. One of the ethyl arms is disordered over two conformations with occupancies of 0.766 (8) and 0.234 (8). Crystal packing is stabilized by inter­molecular C—H⋯O hydrogen bonding between the major component of the disordered ethyl C atom and a nearby carbonyl O atom, and by O—H⋯O hydrogen bonding between the hydroxyl H atom and the carbonyl O atom. This links the molecules into chains in an alternate inverted pattern, parallel, oblique and diagonal to the bc face of the unit cell