发现氟代烯烃1和10e与苯硫基或硒烯基卤化物6之间的反应是溶剂依赖性的,并且在大多数情况下主要给出区域异构体8。加合物8和9的结构通过1 H,19 F和77 Se NMR光谱确定。化合物8容易被卤化,并且用镁或锌处理产物产生所需的多氟乙烯基硫化物和硒化物10。这些试剂的第二种合成路线是由(氟乙烯基硫代衍生物11与苯硫基或亚硒基卤化物。烯烃10e也由三氟乙醛的硒缩醛8t获得。
Synthesis of Fluoroalkyl Sulfides via Additive-Free Hydrothiolation and Sequential Functionalization Reactions
作者:Denise E. Sunagawa、Naoyoshi Ishida、Hiroaki Iwamoto、Masato Ohashi、Corinne Fruit、Sensuke Ogoshi
DOI:10.1021/acs.joc.1c00361
日期:2021.4.16
A modularsynthetic method, involving a hydrothiolation, silylation, and fluoroalkylation, for the construction of highly functionalized fluoroalkyl sulfides has been developed. The use of aprotic polar solvents enables the additive-free chemoselective hydrothiolation of tetrafluoroethylene, trifluorochloroethylene, and hexafluoropropene with various thiols. The stepwise functionalization reactions
Captodative substituent effects — Part XXXI olefins with captodative substitution in [2+2] cycloadditions
作者:Ch. De Cock、S. Piettre、F. Lahousse、Z. Janousek、R. Merényi、H.G. Viehe
DOI:10.1016/s0040-4020(01)97193-5
日期:1985.1
Olefins with captodative substitution are excellent partners in [2+2] cycloadditions leading to cyclobutane derivatives. The reaction rates increase with the radical stabilising power of the substituents. Thio- and selenoalkyl(aryl) substituted gemdifluoroolefins allow the synthesis of new cyclobutane derivatives.
Synthesis of Aryl Perfluorocyclopropyl Ethers via [2 + 1] Cyclopropanation Using TMSCF<sub>2</sub>Br Reagent
作者:Ran Liu、Jinbo Hu
DOI:10.1021/acs.orglett.2c00958
日期:2022.5.27
Aryl perfluorocyclopropyl ethers have been synthesized for the first time by [2 + 1] cyclopropanation between aryl trifluorovinyl ethers and a commercially available TMSCF2Br reagent. This cycloaddition reaction between two fluorine-containing reactants proceeds smoothly in toluene at 120 °C in the presence of a catalytic amount of n-Bu4NBr, and the reaction tolerates a variety of functional groups
Procédé de préparation de perhalogénoalkylthioéthers
申请人:RHONE-POULENC AGROCHIMIE
公开号:EP0374061A1
公开(公告)日:1990-06-20
Procédé de préparation de perhalogenoalkylthioéthers dans lequel on met en contact, éventuellement dans un solvant
- un réducteur formé d'un métal choisi parmi le zinc, le cadmium, l'aluminium, le manganèse, avec du dioxyde de soufre, ou formé d'un dithionite alcalin ou d'un hydroxyméthane sulfinate alcalin, alcalino terreux ou métallique, ou formé d'un anion formiate et le dioxyde de soufre,
- un disulfure
- un halogénure de perfluoroalkyle.