“…Comment 1,4-Dicarbonyl compounds are widely used as synthetic building blocks for further elaboration into substituted cyclopentenones, such as jasmones, rethorolones, cuparenones, prostaglandins, and five-membered heterocyclic compounds, such as furans, pyrroles, thiophenes, pyridazines (Ellison et al, 1973;Yuguchi et al, 2004). As a continuation of our previous studies in this area, (Chen et al, 2007;Gao et al, 2007;Yin et al, 2007). We herein report the structure of the title compound (I) ( Fig.…”