Fluorinated organiccompounds are becoming increasingly important in pharmaceuticals, agrochemicals and materials science. The introduction of trifluoromethoxy groups into new drugs and agrochemicals has attracted much attention due to their strongly electron-withdrawing nature and high lipophilicity. However, synthesis of trifluoromethoxylated organic molecules is difficult owing to the decomposition
Silver-Mediated Intermolecular Iodotrifluoromethoxylation of Alkenes
作者:Qingyun Huang、Pingping Tang
DOI:10.1021/acs.joc.9b03206
日期:2020.2.21
For the first time, intermolecular iodotrifluoromethoxylation between alkenes and NIS with AgF as the catalyst and TFMS as the trifluoromethoxylation reagent has been explored. The practical processes, good functional group tolerance, and easy scalability make this reaction an attractive protocol for the synthesis of trifluoromethoxylated iodides, which can be readily used for further synthetic manipulation
silver‐promoted oxidativebenzylicC−H trifluoromethoxylation has been reported for the first time. With trifluoromethyl arylsulfonate as the trifluoromethoxylation reagent, various arenes, having diverse functional groups, undergo trifluoromethoxylation of their benzylicC−H bonds to form trifluoromethyl ethers under mild reaction conditions. In addition, the trifluoromethoxylation and the fluorination of methyl
Direct Dehydroxytrifluoromethoxylation of Alcohols
作者:Xiaohuan Jiang、Zhijie Deng、Pingping Tang
DOI:10.1002/anie.201711050
日期:2018.1.2
developed. This method generated an alkyl fluoroformate in situ from alcohols, followed by nucleophilic trifluoromethoxylation with trifluoromethyl arylsulfonate (TFMS) as the trifluoromethoxylation reagent. The reaction is operationally simple and scalable, and it proceeds under mild reaction conditions to provide access to a wide range of trifluoromethyl ethers from alcohols. In addition, this method
fluorine-containing groups, trifluoromethylarylethers (ArOCF3) have unique properties in drug design and are difficult to be synthesized, and many different methods were developed to prepare them. A novel one-pot synthesis of o-iodine-aryl trifluoromethylethers (ArOCF3I) was described by the reaction of trifluoromethoxylation and iodination with trifluoromethylaryl sulfonates (TFMS) in this manuscript