title: (Z)-Ethyl 3-(2,4,6-trimethyl-anilino)but-2-enoate.
abstract: The title compound, C(15)H(21)NO(2), was obtained by the reaction of acetoacetate with 2,4,6-trimethyl-aniline using Mexican bentonitic clay as a catalyst. It crystallizes in the enamine form. The β-enamino ester residue is almost perpendicular to the aromatic ring [dihedral angle = 88.10 (6)°]. The mol-ecular conformation is stabilized by a strong intra-molecular N-H⋯O hydrogen bond. In addition, the N-H group forms a weak inter-molecular N-H⋯O hydrogen bond linking the mol-ecules into centrosymmetric dimers.
authors.affiliation: Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, México 04510, Mexico.
authors.forename: Manuel
authors.initials: M
authors.lastname: Amézquita-Valencia
authors.forename: Simón
authors.initials: S
authors.lastname: Hernández-Ortega
authors.forename: G Alejandra
authors.initials: GA
authors.lastname: Suárez-Ortiz
authors.forename: Rubén Alfredo
authors.initials: RA
authors.lastname: Toscano
authors.forename: Armando
authors.initials: A
authors.lastname: Cabrera