Starting from silyl enol ether 4 the corresponding alkenylnonaflate 5 was generated by treatment with nonafluorobutanesulfonyl fluoride (NfF) and a catalytic amount of tetra-n-butyl-ammonium fluoride (TBAF). By Pd-catalysis 5 was directly Heck-coupled with a variety of olefins to furnish functionalized 1,3-dienes 6 - 12. This one-pot procedure could be extended to other silyl enol ethers and provides new synthetic options.
从
硅醚4出发,通过与
全氟丁磺酰
氟(NfF)和催化量的四正丁基
氟化铵(TBAF)处理,生成相应的烯基
全氟丁
磺酸盐5。通过
钯催化,5可直接与各种烯烃进行 Heck偶联反应,得到功能化的1,3-二烯6至12。这一单锅法流程可扩展到其他
硅醚,并提供新的合成选择。