A novel efficient tandem cyclization–methoxylation reaction has been developed to synthesize cyclopentadienyl alkyl ethers via palladium-catalyzed trimerization of diarylethynes and elimination of one dimethoxymethyl benzene molecule. The reaction mechanism was investigated by the Q-Tof APCI-HRMS technique, and the fluorescent properties of the obtained compounds were studied in the solid state and in solution.