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Facile Preparation of 2Z,4E-Dienamides by the Olefination of Electron-deficient Alkenes with Allyl Acetate
Published on: June 21, 2017
(E)-2-(3,5-Di-meth-oxy-benzyl-idene)indan-1-one
Elvia Encarnacion-Thomas1, Roger D Sommer2, Ajay Mallia1
1School of Science and Technology, H-3209, Georgia Gwinnett College, 1000 University Center Lane, Lawrenceville, GA 30043, USA.
Abstract:
The title chalcone, C18H16O3, was prepared by a solventless base-promoted Claisen-Schmidt condensation and, upon recrystallization from ethanol, obtained in 56% yield. The dihedral angle between the indanone ring system and the benzene ring is 2.54 (4) ° and the C atoms of the methoxy groups deviate from the benzene ring by 0.087 (1) and 0.114 (1) Å. In the crystal, π-stacking is the predominant inter-molecular force, with the mol-ecules stacking into columns running parallel to the b axis of the unit cell.
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