Synthesis and Structural Characterization of 2-Benzylidenebenzofuran-3-(2H)-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 inf