utilization of decomposition products of PFECAs. We report herein a new series of deoxyfluorination reagents featuring OCF2 functional groups derived from certain PFECAs. Alkyl fluorides were generated from various alcohols in ≤97% yield by these novelreagents. The mechanistic experiment verified in situgeneration of carbonic difluoride (COF2).
The direct anti-Markovnikov addition of mineral acids to styrenes
作者:Dale J. Wilger、Jean-Marc M. Grandjean、Taylor R. Lammert、David A. Nicewicz
DOI:10.1038/nchem.2000
日期:2014.8
hydrogen atom donor. The nucleophile counterion plays a critical role by ensuring high reactivity, with 2,6-lutidinium salts typically furnishing the best results. The nature of the redox-activehydrogen atom donor is also consequential, with 4-methoxythiophenol providing the best reactivity when 2,6-lutidinium salts are used. A novel acridinium sensitizer provides enhanced reactivity within several of
Photoredox-catalyzed deoxyfluorination of activated alcohols with Selectfluor®
作者:María González-Esguevillas、Javier Miró、Jenna L. Jeffrey、David W.C. MacMillan
DOI:10.1016/j.tet.2019.05.043
日期:2019.8
Herein we disclose a deoxyfluorination of alcohols with an electrophilic fluorine source via visible-light photoredox catalysis. This radical-mediated C–F coupling is capable of fluorinating secondary and tertiary alcohols efficiently, complementing previously reported nucleophilic deoxyfluorination protocols.
An easy access to fluoroalkanes by deoxygenative hydrofluorination of carbonyl compounds via their tosylhydrazones
作者:Arvind K. Yadav、Vishnu P. Srivastava、Lal Dhar S. Yadav
DOI:10.1039/c3cc00122a
日期:——
An efficient and operationally simple synthesis of fluoroalkanes by deoxygenative hydrofluorination of carbonyl compounds via their tosylhydrazone surrogates is reported. The reaction can be carried out in a one-pot procedure directly from carbonyl compounds.
Synthesis of Alkyl Fluorides by Silver‐Catalyzed Radical Decarboxylative Fluorination of Cesium Oxalates
作者:Émilie Vincent、Julien Brioche
DOI:10.1002/ejoc.202100344
日期:2021.5.7
Readily available from alcohols, cesium oxalates undergo radical deoxyfluorination reaction in the presence of silver salts catalyst and Selectfluor® to produce alkyl fluorides. Herein, the scope of the fluorination protocol and a brief mechanistic study is described.