Palladium-Catalyzed Alkynylation of Enones with Alkynylsilanes via C–C Bond Activation
作者:Yu-Wen Liu、Ling-Jun Li、Hui Xu、Hui-Xiong Dai
DOI:10.1021/acs.joc.2c00498
日期:2022.5.20
We report herein the synthesis of 1,3-enynes via palladium-catalyzed cross-coupling between enone derivatives and alkynylsilanes. The employment of an appropriate pyridine-oxazoline ligand is the key to the C–C cleavage and the high E/Z stereoselectivity. This protocol features broad substrate scope and wide functional-group tolerance, affording the desired products in moderate-to-good yields. Late-stage
我们在此报告了通过钯催化的烯酮衍生物和炔基硅烷之间的交叉偶联合成 1,3-烯炔。使用合适的吡啶-恶唑啉配体是 C-C 裂解和高E / Z立体选择性的关键。该协议具有广泛的底物范围和广泛的官能团耐受性,以中等至良好的产量提供所需的产品。天然产物 β-紫罗兰酮的后期多样化进一步证明了该协议的合成效用。