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。
A broadly applicable [18F]trifluoromethylation of aryl and heteroaryl iodides for PET imaging
作者:Mickael Huiban、Matthew Tredwell、Satoshi Mizuta、Zehong Wan、Xiaomin Zhang、Thomas Lee Collier、Véronique Gouverneur、Jan Passchier
DOI:10.1038/nchem.1756
日期:2013.11
the precursor and other reagents, as well as the limited availability of parent 18F sources of suitable reactivity ([18F]F– and [18F]F2). There is a high-priority demand for general methods allowing access to [18F]CF3-substituted molecules for application in pharmaceutical discovery programmes. We report the development of a process for the late-stage [18F]trifluoromethylation of (hetero)arenes from
A Universal Procedure for the [<sup>18</sup>F]Trifluoromethylation of Aryl Iodides and Aryl Boronic Acids with Highly Improved Specific Activity
作者:Dion van der Born、Claudia Sewing、J. Koos D. M. Herscheid、Albert D. Windhorst、Romano V. A. Orru、Danielle J. Vugts
DOI:10.1002/anie.201406221
日期:2014.10.6
Herein, we describe a valuable method for the introduction of the [18F]CF3 group into arenes with highly improved specific activity by the reaction of [18F]trifluoromethane with aryliodides or aryl boronic acids. This [18F]trifluoromethylation reaction is the first to be described in which the [18F]CF3 products are generated in actual trace amounts and can therefore effectively be used as PET tracers
Fluorine‐18 Labeling of Difluoromethyl and Trifluoromethyl Groups via Monoselective C−F Bond Activation
作者:Shivashankar Khanapur、Kenneth Lye、Dipendu Mandal、Xin Jie Wee、Edward G. Robins、Rowan D. Young
DOI:10.1002/anie.202210917
日期:2022.12.5
method for the labeling of both CF3 and CF2H groups using frustrated Lewis pair mediated selectiveC−Factivation to formally substitute fluorine-19 with fluorine-18. The method utilizes the target compound as the starting material simplifying the radiosynthetic protocol for labeling pharmaceuticals and radiotracers that already contain CF3 or CF2H groups.
我们报告了一种标记 CF 3和 CF 2 H 基团的通用方法,使用受挫的 Lewis 对介导的选择性 C−F 激活正式用氟 18 替代氟 19。该方法利用目标化合物作为起始材料,简化了用于标记已经含有 CF 3或 CF 2 H 基团的药物和放射性示踪剂的放射合成方案。