Scheme 2From: Development of a fluorine-18 radiolabelled fluorescent chalcone: evaluated for detecting glycogenRadiochemistry to access [18F]5. Reaction conditions: i) [18F] fluoride, Kryptofix K222, KHCO3, MeCN, 90 °C, 20 min; ii) phosphoric acid (1.8 M), MeCN, 80 °C, 15 min; iii) acryloyl chloride, MeCN, 50 °C, 15 minBack to article page