Synthesis and structure of (E)-N-(4-meth-oxy-phen-yl)-2-[4-(3-oxo-3-phenyl-prop-1-en-1-yl)phen-oxy]acetamide. 2021

Cong Nguyen Tien, and Trung Vu Quoc, and Dat Nguyen Dang, and Giang Le Duc, and Luc Van Meervelt
Faculty of Chemistry, Ho Chi Minh City University of Education, 280 An Duong Vuong Street, Ho Chi Minh City, 72711, Vietnam.

The title compound N-(4-meth-oxy-phen-yl)-2-[4-(3-oxo-3-phenyl-prop-1-en-1-yl)phen-oxy]acetamide, C24H21NO4, was prepared from reaction of N-(4-meth-oxy-phen-yl)-2-chloro-acetamide and (E)-3-(4-hy-droxy-phen-yl)-1-phenyl-prop-2-en-1-one, which was obtained from the reaction of 4-hy-droxy-benzaldehyde and aceto-phenone. The structure of the title compound was determined by IR, 1H-NMR, 13C-NMR and HR-MS spectroscopic data and further characterized by single-crystal X-ray diffraction. The asymmetric unit contains four mol-ecules, each displaying an E-configuration of the C=C bond. The dihedral angle between the phenyl rings in each mol-ecule varies between 14.9 (2) and 45.8 (2)°. In the crystal, C-H⋯O hydrogen-bonding inter-actions link the mol-ecules into chains running along the [001] direction. In addition, C-H⋯π inter-actions further stabilize the crystal packing. A Hirshfeld analysis indicates that the most important contributions to the surface contacts are from H⋯H (43.6%), C⋯H/H⋯C (32.1%) and O⋯H/H⋯O (18.1%) inter-actions.

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