Chemoselective Bromination of Active Methylene and Methyne Compounds by Potassium Bromide, Hydrochloric Acid and Hydrogen Peroxide - Kirihara, Masayuki; Ogawa, Shiho; Noguchi, Takuya; Okubo, Kumiko; Monma, Yoshinari; Shimizu, Ikuko; Shimosaki, Ryuji; Hatano, Akihiko; Hirai, Yoshiro (Synlett, 2006)