A series of new hypervalentiodinereagents based on the 1,3‐dihydro‐3,3‐dimethyl‐1,2‐benziodoxole and 1,2‐benziodoxol‐3‐(1H)‐one scaffolds, which contain a functionalized tetrafluoroethyl group, have been prepared, characterized, and used in synthetic applications. Their corresponding electrophilic fluoroalkylation reactions with various sulfur, oxygen, phosphorus, and carbon‐centered nucleophiles
Zinc-Mediated Intermolecular Reductive Radical Fluoroalkylsulfination of Unsaturated Carbon-Carbon Bonds with Fluoroalkyl Bromides and Sulfur Dioxide
作者:Yongan Liu、Qiongzhen Lin、Zhiwei Xiao、Changge Zheng、Yong Guo、Qing-Yun Chen、Chao Liu
DOI:10.1002/chem.201805526
日期:2019.2.1
general zinc‐mediated intermolecular reductiveradical fluoroalkylsulfination of unsaturated C−C bonds has been developed using readily available fluoroalkyl bromides and 1,4‐diazabicyclo[2.2.2]octane‐bis(sulfur dioxide) adduct (DABSO) with wide substrate scope and excellent functional group tolerance. Sulfur dioxide anionradical generated in situ from the reduction of sulfur dioxide with zinc may be
Visible-light-induced installation of oxyfluoroalkyl groups
作者:Gwi-Rim Park、Jisu Moon、Eun Jin Cho
DOI:10.1039/c7cc08067k
日期:——
(Hetero)aryloxytetrafluoroethylation of heteroaromatics and alkenes has been achieved by visible-light photocatalysis utilizing readily synthesized oxyfluoroalkyl reagents.
Tetrafluoroalkyl bromides are metalated with equimolar iPrMgCl·LiCl (Turbo Grignard) to form organomagnesium compounds which are stable at low temperatures and react with various electrophiles (aldehydes, ketones, CO2, cyclic sulfate and sulfamidate, N-sulfonylimines, nitrone, chlorophosphate, nonaflyl azide) to afford novel functionalized tetrafluoroethylene-containing products. Ease of operation
A practical synthesis of aryl tetrafluoroethyl ethers via the improved reaction of phenols with 1,2-dibromotetrafluoroethane
作者:Jianqing Li、Jennifer X. Qiao、Daniel Smith、Bang-Chi Chen、Mark E. Salvati、Jacques Y. Roberge、Balu N. Balasubramanian
DOI:10.1016/j.tetlet.2007.08.065
日期:2007.10
An efficient and practical synthesis of various aryl tetrafluoroethyl ethers by the reaction of phenols with 1,2-dibromotetrafluoroethane and the subsequent reduction with zinc dust was described. The nucleophilic substitution of 1,2-dibromotetrafluoroethane with phenols initiated by bromophilic attack was improved by using Cs2CO3 as a base and DMSO as a solvent.
描述了通过苯酚与1,2-二溴四氟乙烷反应并随后用锌粉还原而有效和实用地合成各种芳基四氟乙基醚的方法。通过使用Cs 2 CO 3作为碱和DMSO作为溶剂,改善了由亲油性攻击引发的苯酚对1,2-二溴四氟乙烷的亲核取代。