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

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 and13C 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 compounds3a, 3band3care available in the supporting information in .pdf format. Crystallographic information files (.cif) of compounds3a, 3b, and3care available in the electronic format.] [ABSTRACT FROM AUTHOR]