Abstract
Calcium chloride along with one drop of concentrated HCl is a facile and efficient catalyst for the synthesis of aryl 14<em>H</em>-dibenzo[<em>a,j</em>] xanthene derivatives via one-pot condensation of various substituted benzaldehydes and β-naphthol under microwave and solvent-free conditions. The advantages offered by the present protocol include shorter reaction time, good‑to‑excellent yields, operational simplicity, cost-effectiveness, and easily available catalysts.
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