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Updated: Jun 5, 2026

Facile Preparation of (2Z,4E)-Dienamides by the Olefination of Electron-deficient Alkenes with Allyl Acetate
Published on: June 21, 2017
(E)-2-Acetyl-pyrazine 4-nitro-phenyl-hydrazone
Shang Shan1, Yu-Liang Tian, Shan-Heng Wang
1College of Chemical Engineering and Materials Science, Zhejiang University of Technology, People's Republic of China.
Abstract:
In the title compound, C(12)H(11)N(5)O(2), the mol-ecule adopts an E configuration, with the benzene and pyrazine rings located on opposite sides of the N=C double bond. The face-to-face separations of 3.413 (14) and 3.430 (8) Å, respectively between parallel benzene rings and between pyrazine rings indicate the existence of π-π stacking between adjacent mol-ecules. The crystal structure also contains N-H⋯N and C-H⋯O hydrogen bonding.
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