Abstract
In the title compound, C16H21N3O, the molecule adopts an E conformation about the central C=N double bond. The 2-methylpent-2-ene group is disordered over two sets of sites, with a refined occupancy ratio of 0.785 (8): 0.215 (8). The dihedral angle between the essentially planar [the r.m.s. value for the major component is 0.021 (7) and its maximum deviation is 0.025 (4) angstrom ; the r.m.s. value for the minor component is 0.03 (4) and its maximum deviation is 0.05 (3) angstrom major and minor components of the 2-methylbut-2-ene group is 35.9 (13)degrees. In the crystal, C-H center dot center dot center dot O and N-H center dot center dot center dot O hydrogen bonds link the molecules, with the same O atom acting as the acceptor. This results in C-1(1)(4) and C-1(1)(5) [001] chains.