C. Fleckenstein, H. Plenio
May 1, 2008
Citations
1
Influential Citations
56
Citations
Journal
Green Chemistry
Abstract
The water soluble Pd complex of dicyclohexyl(2-sulfo-9-(3-(4-sulfophenyl)propyl)-9H-fluoren-9-yl)phosphine was used for an efficient copper free and sustainable reaction protocol for Sonogashira cross couplings. Using a water/ipropanol mixture as the solvent and K2CO3 as base, numerous heterocyclic and aryl bromides and chlorides were reacted with various acetylenes in near quantitative yield at 1 mol% catalyst loading and 90 °C.