Nguyen, H., & Tran, P. (2016). Friedel-Crafts acetylation of indole, 5-methoxyindole and 5-chloroindole using copper triflate under microwave irradiation. VNUHCM Journal of Science and Technology Development, 19(4), 177-184. https://doi.org/https://doi.org/10.32508/stdj.v19i4.621