Fast Carbon Isotope Exchange of Carboxylic Acids Enabled by Organic Photoredox Catalysis
作者:Duanyang Kong、Maxime Munch、Qiqige Qiqige、Christopher J. C. Cooze、Benjamin H. Rotstein、Rylan J. Lundgren
DOI:10.1021/jacs.0c12819
日期:2021.2.10
Carbazole/cyanobenzene photocatalysts promote the direct isotopic carboxylate exchange of C(sp3) acids with labeled CO2. Substrates that are not compatible with transition-metal-catalyzed degradation–reconstruction approaches or prone to thermally induced reversible decarboxylation undergo isotopic incorporation at roomtemperature in short reaction times. The radiolabeling of drug molecules and precursors
咔唑/氰基苯光催化剂促进带有标记CO 2的C(sp 3)酸的直接同位素羧酸交换。与过渡金属催化的降解-重建方法不兼容或易于发生热诱导的可逆脱羧作用的底物在室温下会在短时间内经历同位素掺入。证明了用[ 11 C] CO 2对药物分子和前体进行放射性标记。
How does an allene distort to accommodate negative charge? 1,1,3,3-Tetraphenylallene