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A simple, one-pot synthesis of six highly functionalized selenazole derivatives has been achieved in moderate to good yields via a three-component condensation of variously substituted hydrazines, potassium selenocyanate, aroyl chlorides, and dimethyl acetylenedicarboxylate in acetone at room temperature. The structures of the compounds were deduced from elemental analysis and their infrared (IR),  77 Se nuclear magnetic resonance (NMR),  1 H NMR, and  13 C NMR spectra. This new protocol offers advantages such as mild reaction conditions, easy work-up, and high yields.

A simple, one-pot method for the synthesis of functionalized selenazole derivatives