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Updated: Feb 25, 2026

Facile Preparation of 2Z,4E-Dienamides by the Olefination of Electron-deficient Alkenes with Allyl Acetate
Published on: June 21, 2017
Crystal structure of (E)-4-benzyl-idene-6-phenyl-1,2,3,4,7,8,9,10-octa-hydro-phenanthridine
Baidaa K Al-Rubaye1, Alice Brink2, Gary J Miller3
1Department of Chemistry, College of Education for Pure Science (Ibn Al-Haitham), University of Baghdad, Iraq.
Abstract:
The preparation of the title compound, C26H25N, was achieved by the condensation of an ethano-lic mixture of benzaldehyde, cyclo-hexa-none and ammonium acetate in a 2:1:1 molar ratio. There are two crystallographically independent mol-ecules in the asymmetric unit. The two cyclo-hexyl rings adopt an anti-envelope conformation with the benzyl moiety adopting a cis conformation with respect to the nitro-gen atom of the phenanthridine segment. In the crystal, mol-ecules are linked through C-H⋯N inter-actions into hydrogen-bonded chains that are further arranged into distinct layers by weak offset π-π inter-actions.
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