Direct Synthesis of α-Keto Esters from Ethylbenzenes Using 48% Aqueous HBr by Aerobic Visible Light Photooxidation - Tada, Norihiro; Ban, Kazunori; Nobuta, Tomoya; Hirashima, Shin-ichi; Miura, Tsuyoshi; Itoh, Akichika (Synlett, 2011)