Synthesis and structural characterization of 2-benzylidenebenzofuran-3-(2 H)-ones

Abstract

Novel aurone derivatives e.g. 2-(2-(3-methylbut-2-enyloxy)benzylidene)benzofuran-3(2H)-one (3a), 2-(2-(allyloxy)benzylidene)-7-methoxybenzofuran-3(2H)-one (3b), and 2-(5-bromo-2-(3-methylbut-2-enyloxy)benzylidene)-6-hydroxybenzofuran-3(2H)-one (3c) were synthesized. All these compounds were characterized by IR, 1H and 13C NMR, and Mass spectroscopy. Finally, the crystal structures were solved by single crystal X-ray diffraction data and the structures were analyzed in terms of supramolecular interactions.

[Supplementary materials are available for this article. Go to the publisher's online edition of Molecular Crystals and Liquid Crystals for the following free supplemental resource(s): supplemental figures 1–12; Spectral data (IR, NMR, MS, and HRMS) of the compounds 3a, 3b and 3c are available in the supporting information in .pdf format. Crystallographic information files (.cif) of compounds 3a, 3b, and 3c are available in the electronic format.]