Congratulations to Boyu LIU and Xianjun XU: Our paper titled "One-Pot Synthesis of Unsymmetrical 1,4-Diaminobutynes by Cu(I)-Catalyzed Cross-Coupling of Propiolic Acid, Secondary Amine, Aldehydes and Formaldehyde" has been accepted for publication in Chin. J. Org. Chem.