Catalytic Conjugate Addition
of Cyanide to Enones: Cooperative Catalysis of Ni(0) and Gd(OTf)<sub>3</sub>
作者:Motomu Kanai、Masakatsu Shibasaki、Yuta Tanaka
DOI:10.1055/s-2008-1078264
日期:——
catalytic cunjugate addition of cyanide to enones was developed using cooperative catalysis of Ni(0) and Gd(OTf) 3 . The co-catalyst, Gd(OTf) 3 , dramatically accelerated the reaction. The substrate scope is broad, including cyclic, linear, branched, and aromatic enones. Synthetic efficiency of the key conversion in our Tamiflu synthesis, conjugate cyanation of an enone, was significantly improved by using
使用 Ni(0) 和 Gd(OTf) 3 的协同催化,开发了一种高效、合成有用的催化偶联物加成氰化物到烯酮中。助催化剂 Gd(OTf) 3 显着加速了反应。底物范围广泛,包括环状、直链、支链和芳香烯酮。通过使用这种新方法,我们达菲合成中的关键转化(烯酮的共轭氰化)的合成效率得到了显着提高。三氟甲磺酸钆有助于将 Ni(0) 氧化加成到烯酮中,这是催化循环中的关键步骤。