One-pot fluorosulfurylation of Grignard reagents using sulfuryl fluoride
作者:Cayo Lee、Nicholas D. Ball、Glenn M. Sammis
DOI:10.1039/c9cc08487h
日期:——
Herein, we report a new method for the one-pot syntheses of sulfonyl fluorides. Addition of an alkyl, aryl, or heteroaryl Grignard to a solution of sulfuryl fluoride at ambient temperature affords the desired sulfonyl fluorides in 18-78% yield. Furthermore, this method is applicable for in situ sequential reactions, whereby the Grignard reagent can be converted to the corresponding diarylsulfone, sulfonate
The first metal-free procedure for the synthesis of arylsulfonyl fluorides is reported. Under organo-photoredox conditions, aryl diazonium salts react with a readily available SO2 source (DABSO) to afford the desired product through simple nucleophilic fluorination. The reaction tolerates the presence of both electron-rich and -poor aryls and demonstrated a broad functional group tolerance. To shed
报道了合成芳基磺酰氟的第一个无金属程序。在有机光氧化还原条件下,芳基重氮盐与容易获得的 SO 2源 (DABSO)反应,通过简单的亲核氟化得到所需的产物。该反应耐受富电子和贫电子芳基的存在,并表现出广泛的官能团耐受性。为了阐明反应机理,结合了几种实验技术,包括荧光、核磁共振和 EPR 光谱以及 DFT 计算。
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: