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.
Stereoselective synthesis of (Z)-β-fluoro-α,β-unsaturated esters from (Z)-2-fluoro-1-alkenyliodonium salts
作者:Masanori Yoshida、Ayumu Komata、Shoji Hara
DOI:10.1016/j.jfluchem.2003.11.025
日期:2004.4
(Z)-β-Fluoro-α,β-unsaturated esters were stereoselectively synthesized from (Z)-2-fluoro-1-alkenyliodonium salts by the Pd-catalyzed methoxycarbonylation reaction. The reaction proceeded at room temperature and various functional groups on the substrate can tolerate the reaction conditions.
Stereoselective synthesis of fluoroalkenes via (Z)-2-fluoroalkenyliodonium salts
作者:Masanori Yoshida、Ayumu Komata、Shoji Hara
DOI:10.1016/j.tet.2006.05.085
日期:2006.9
Stereoselective synthesis of fluoroalkenes is described. (Z)-2-Fluoro-1-alkenyl(phenyl)iodonium tetrafluoroborates (1) were synthesized stereoselectively in good yields by Michael-type addition of HF to 1-alkynyl(phenyl)iodonium tetrafluoroborates (2) with a commercially available HF reagent, hydrofluoric acid or Et3N-3HF. Pd-catalyzed cross-coupling reactions using 1 gave (Z)-2-fluoro-l-alkene derivatives in moderate yields. The treatment of 1 with KI in the presence of a catalytic amount of CuI gave (Z)-2-fluoro-1-iodo-1-alkenes (3). Pd-catalyzed cross-coupling reactions of 3 gave better results than that of 1, and a variety of (Z)-2-fluoro-l-alkene derivatives were synthesized in good yields. (c) 2006 Elsevier Ltd. All rights reserved.
Cousseau, Jack; Albert, Patrice, Bulletin de la Societe Chimique de France, 1986, # 6, p. 910 - 915