Liang, Ying, Pei-Zhen Liu, Chan-Cui Wu, and Qian Zhang. “Lewis Acid Catalyzed C-N Bond Formation: Synthesis of Quinoxalines via CuX (X = Cl, Br, I) Catalyzed Cyclotrimerization of Alkynes With O-Phenylendiamines”. Asian Journal of Chemistry 27, no. 11 (July 16, 2015): 3921–3924. Accessed November 25, 2024. https://asianpubs.org/index.php/ajchem/article/view/27_11_1.