Department of Chemistry, Lehigh University, Bethlehem, PA 18015, USA.
Org Biomol Chem. 2011 Mar 21;9(6):1714-6. doi: 10.1039/c0ob01229g. Epub 2011 Feb 14.
In this communication we show that the instability of samarium diiodide (SmI(2)) in acetonitrile is a consequence of ionization of the reductant in this solvent. Samarium triflate (Sm(OTf)(2)) is exceptionally stable in acetonitrile for periods over six months and can be used with appropriate additives to initiate a ketyl-olefin coupling reaction in high yield.
在本通讯中，我们表明二碘化钐（SmI2）在乙腈中的不稳定性是还原剂在该溶剂中电离的结果。三氟甲磺酸钐（Sm（OTf）2）在乙腈中极为稳定，可以使用适当的添加剂，以高产率引发酮基-烯烃偶联反应。
