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Updated: Jun 1, 2026

Facile Preparation of (2Z,4E)-Dienamides by the Olefination of Electron-deficient Alkenes with Allyl Acetate
Published on: June 21, 2017
(Z)-1-Acetyl-3-[2-oxo-1-phenyl-2-(3-pyrid-yl)ethyl-idene]indolin-2-one
Abstract:
The title compound, C(23)H(16)N(2)O(3), exists in a Z configuration with respect to the acyclic C=C bond. The pyridine and phenyl rings are oriented at dihedral angles of 72.97 (4) and 45.05 (4)°, respectively, with respect to the almost planar indoline ring system [maximum deviation 0.080 (1) Å]. The pyridine and phenyl rings are oriented almost perpendicular to each other [dihedral angle 88.93 (5)°]. In the crystal, mol-ecules are inter-connected into a three-dimensional framework via inter-molecular C-H⋯O and C-H⋯N hydrogen bonds and weak π-π inter-actions [centroid-centroid distance = 3.681 (1) Å].
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