Synthesis of ArCF<sub>2</sub>X and [<sup>18</sup>F]Ar-CF<sub>3</sub> via Cleavage of the Trifluoromethylsulfonyl Group
作者:Ren-Yin Yang、Xinyan Gao、Kehao Gong、Juan Wang、Xiaojun Zeng、Mingwei Wang、Junbin Han、Bo Xu
DOI:10.1021/acs.orglett.1c03803
日期:2022.1.14
A versatile synthesis of ArCF2X and [18F]Ar-CF3 type compounds from readily available ArCF2SO2CF3 has been developed. Diverse nucleophiles, including weak nucleophiles such as halides (18F–, Cl–, Br–, and I–), RSH, and ROH, could react with ArCF2SO2CF3 efficiently to give the corresponding difluoromethylene products. The control experiments and the Hammett plot indicated that the reaction might proceed
已经开发了一种从容易获得的 ArCF 2 SO 2 CF 3合成 ArCF 2 X 和 [ 18 F]Ar-CF 3型化合物的通用方法。多种亲核试剂,包括弱亲核试剂,如卤化物(18 F –、Cl –、Br –和 I –)、RSH 和 ROH,可以与 ArCF 2 SO 2 CF 3反应有效地得到相应的二氟亚甲基产物。对照实验和哈米特图表明,反应可能通过三氟甲基磺酰基的空间位阻辅助裂解产生的二氟碳正离子中间体进行。