Mono-hydrofluorination of electrophilic alkynes by the liquid biphasic CsF–H<sub>2</sub>O–DMF system (DMF = N,N-dimethylformamide)
作者:Alain Gorgues、Dominique Stéphan、Jack Cousseau
DOI:10.1039/c39890001493
日期:——
CsF induces the addition of HF in fair yields to activated acetylenic triple bonds in a DMF–water biphasic medium (DMF = N,N-dimethylformamide); in a homogeneous DMF–water mixture, no addition is observed.
Tetrabutylammonium and polymer-supported dihydrogentrifluoride: new hydrofluorinating reagents for electrophilic alkynes
作者:Patrice Albert、Jack Cousseau
DOI:10.1039/c39850000961
日期:——
Tetrabutylammonium and polymer-supporteddihydrogentrifluoride are readily accessible reagents which allow addition of HF to activated carbon–carbon triple bonds, thus leading to functional fluoroalkenes in good yields.
(E)-beta-Fluoro-alpha-unsaturated esters were stereoselectively obtained by the palladium-catalyzed carbonylation reaction of (E)-2-fluoro-1-iodo-1-alkenyliodonium salts obtained by the addition of iodotoluene difluoride to 1-alkynes. (C) 1999 Elsevier Science Ltd. All rights reserved.