reagents (trifluoromethyl)(4-nitrophenyl)bis(carbomethoxy)methylide (1g) and (trifluoromethyl)(3-chlorophenyl)bis(carbomethoxy)methylide (1j) through structure-activity study was described. Under mild conditions, reagent 1g reacted with β-ketoesters and silyl enol ethers to give α-trifluoromethylated-β-ketoesters or α-trifluoromethylated ketones in high yields. In addition, reagent 1g could serve as
Solid-phase synthesis of diaryl ketones through a three-component Stille coupling reaction
作者:Weiya Yun、Shiming Li、Bingbing Wang、Li Chen
DOI:10.1016/s0040-4039(00)01937-7
日期:2001.1
A three-component Stille coupling reaction on solid phase is described. Diarylketones bearing a wide variety of functional groups were prepared with polymer-bound organostannane and aryl halides in the presence of carbon monoxide.
Pd-Catalyzed Synthesis of Aryl and Heteroaryl Triflones from Reactions of Sodium Triflinate with Aryl (Heteroaryl) Triflates
作者:Lynette A. Smyth、Eric M. Phillips、Vincent S. Chan、José G. Napolitano、Rodger Henry、Shashank Shekhar
DOI:10.1021/acs.joc.5b02523
日期:2016.2.5
A novel method for Pd-catalyzed triflination of aryl and heteroaryl triflates using NaSO2CF3 as the nucleophile is described. The combination of Pd2(dba)3 and RockPhos formed the most effective catalyst. A broad range of functional groups and heteroaromatic compounds were tolerated under the neutral reaction conditions. The order of reactivity ArOTf ≥ ArCl ≥ ArBr is consistent with transmetalation
Synthesis of 18F‐labeled Aryl Trifluoromethyl Sulfones, ‐Sulfoxides, and ‐Sulfides for Positron Emission Tomography
作者:Lukas Veth、Albert D. Windhorst、Danielle J. Vugts
DOI:10.1002/anie.202404278
日期:2024.7
The mild and high-yielding synthesis of 18F-labeled aryl trifluoromethyl sulfones, -sulfoxides, and -sulfides using [18F]Ruppert-Prakash reagent is described. The application to the radiolabeling of different bioactive compounds using >1 GBq of 18F-labeling reagent is demonstrated. This work expands the radiochemical space of [18F]CF3-containing structural motifs for the use in positron emission tomography