Rapid Deoxyfluorination of Alcohols with
<i>N</i>
‐Tosyl‐4‐chlorobenzenesulfonimidoyl Fluoride (SulfoxFluor) at Room Temperature
作者:Junkai Guo、Cuiwen Kuang、Jian Rong、Lingchun Li、Chuanfa Ni、Jinbo Hu
DOI:10.1002/chem.201901176
日期:2019.5.28
2‐pyridinesulfonyl fluoride (PyFluor) in fluorination rate, and is also superior to perfluorobutanesulfonyl fluoride (PBSF) in fluorine‐economy. Its reaction with alcohols not only tolerates a wide range of functionalities including the more sterically hindered alcoholic hydroxyl groups, but also exhibits high fluorination/elimination selectivity. Because SulfoxFluor can be easily preparedfrom inexpensive
Deoxyfluorination with CuF
<sub>2</sub>
: Enabled by Using a Lewis Base Activating Group
作者:D. Eilidh Sood、Sue Champion、Daniel M. Dawson、Sonia Chabbra、Bela E. Bode、Andrew Sutherland、Allan J. B. Watson
DOI:10.1002/anie.202001015
日期:2020.5.25
Deoxyfluorination is a primary method for the formation of C-F bonds. Bespoke reagents are commonly used because of issues associated with the low reactivity of metal fluorides. Reported here is the development of a simple strategy for deoxyfluorination, using first-row transition-metal fluorides, and it overcomes these limitations. Using CuF2 as an exemplar, activation of an O-alkylisourea adduct
Efficient protocol for the SO2F2-mediated deoxyfluorination of aliphatic alcohols
作者:Cayo Lee、Joey Lai、Maxim Epifanov、Cindy Xinyun Wang、Glenn M. Sammis
DOI:10.1016/j.jfluchem.2021.109888
日期:2021.11
the development of new synthetic methods to access these important fluorinated motifs. Herein we report the sulfuryl fluoride-mediated deoxyfluorination of alcohols using room temperature reaction conditions in only an hour. A wide range of primary aliphatic alcohols were efficiently converted to the corresponding fluoride in 46-70% isolated yields. Secondaryalcohols were also effectively deoxyfluorinated
Derivatives of 2-arylimino-2,3-dihydrothiazoles, their preparation processes and their therapeutic use
申请人:Moinet Christophe
公开号:US20070043095A1
公开(公告)日:2007-02-22
The present invention is drawn to compounds of the formula
in racemic and enantiomeric form or all combinations of these forms wherein the various substituents are as defined in the application which compounds have a good affinity for certain subtypes of somatostatin receptors and have useful pharmacological properties.
PyFluor: A Low-Cost, Stable, and Selective Deoxyfluorination Reagent
作者:Matthew K. Nielsen、Christian R. Ugaz、Wenping Li、Abigail G. Doyle
DOI:10.1021/jacs.5b06307
日期:2015.8.5
We report an inexpensive, thermally stable deoxyfluorination reagent that fluorinates a broad range Of alcohols without substantial formation of elimination side products. This combination of selectivity; safety, and economic viability enables,deoxyfluorination on preparatory scale. We employ the [F-18]-labeled reagent in the first example of a no-carrier-added deoxy-radiofluorination: