Trifluoromethyl Benzoate: A Versatile Trifluoromethoxylation Reagent
作者:Min Zhou、Chuanfa Ni、Yuwen Zeng、Jinbo Hu
DOI:10.1021/jacs.8b04000
日期:2018.6.6
Trifluoromethyl benzoate (TFBz) is developed as a new shelf-stable trifluoromethoxylation reagent, which can be easily prepared from inexpensive starting materials using KF as the only fluorine source. The synthetic potency of TFBz is demonstrated by trifluoromethoxylation-halogenation of arynes, nucleophilic substitution of alkyl (pseudo)halides, cross-coupling with aryl stannanes, and asymmetric
A regiospecific silver-mediated fluorination of arylsilanes is reported. The reaction is operationally simple, and employs Ag2O as readily available, inexpensive silver source, which can be recovered.
报道了芳基硅烷的区域特异性银介导的氟化。该反应操作简单,并使用 Ag 2 O 作为容易获得的廉价银源,可以回收。
Copper-Mediated Radiofluorination of Arylstannanes with [<sup>18</sup>F]KF
作者:Katarina J. Makaravage、Allen F. Brooks、Andrew V. Mossine、Melanie S. Sanford、Peter J. H. Scott
DOI:10.1021/acs.orglett.6b02911
日期:2016.10.21
A copper-mediated nucleophilic radiofluorination of aryl- and vinylstannanes with [18F]KF is described. This method is fast, uses commercially available reagents, and is compatible with both electron-rich and electron-deficient arene substrates. This method has been applied to the manual synthesis of a variety of clinically relevant radiotracers including protected [18F]F-phenylalanine and [18F]F-DOPA
Ni-Catalyzed Stannylation of Aryl Esters via C−O Bond Cleavage
作者:Yiting Gu、Rúben Martín
DOI:10.1002/anie.201611720
日期:2017.3.13
Ni‐catalyzed stannylation of aryl esters with air‐ and moisture‐insensitive silylstannyl reagents via C −Ocleavage is described. This protocol is characterized by its wide scope, including challenging combinations, thus enabling access to versatile building blocks and orthogonal C−heteroatom bond formations.