“…To short or simplify the preparation process, in the present study, benzaldehyde derivatives containing hydroxyl electron-donating groups or methoxy electron-donating groups were selected to react with aldehyde taking place aldol reaction, the advantame intermediate was obtained from the aldol reaction, the intermediate was obtained from the aldol reaction, and then, advantame was prepared through a ring-opening and hydrogenation reaction on the basis of the intermediate at the same time, so advantame was prepared in just two simple steps (Wu & Zheng, 2009). To our knowledge, a series of safety toxicology studies of advantame have been performed (Otabe, Fujieda, Masuyama, Ubukata, & Lee, 2011c;Sclafani & Ackroff, 2015;Ubukata, Nakayama, & Mihara, 2011), and a method using HPLC and LC-MS/MS for the determination of advantame in food was described (Kobayashi, Terada, Nakajima, 2015). However, currently there is barely any detailed information on the analysis or detection method of the advantame intermediate, and even the reference substance of advantame intermediate cannot be bought from the market.…”