Abstract
Abstract magnified image The reaction of β‐naphthol with arylaldehydes and 2H‐indene‐1,3‐dione in the presence of sulfamic acid (3 mol %) under solvent‐free conditions led to 13‐aryl‐indeno[1,2‐b]naphtho[1,2‐e]pyran‐12(13H)‐ones in good yields. J. Heterocyclic Chem., (2010).
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