Palladium(<scp>II</scp>)‐Catalyzed Markovnikov Hydroalkynylation of Unactivated Terminal Alkenes<sup>†</sup>
作者:Chuanqi Hou、Pinhong Chen、Guosheng Liu
DOI:10.1002/cjoc.202300472
日期:2024.1
challenging. Herein, we have developed a palladium-catalyzed Markovnikov hydroalkynylation of unactivated terminal alkenes, which provides an efficient approach for the synthesis of branched alkynyl compounds under mild conditions. This reaction features excellent functional group tolerance, good reaction yields and excellent regioselectivity. Moreover, the asymmetric hydroalkynylation reaction has also
炔烃是有机合成中的多功能合成子,也是生物活性分子中的重要结构部分。最近,已经用反应性烯烃和带有导向基团的烯烃开发了过渡金属催化的烯烃加氢炔基化。然而,简单烯烃的区域选择性加氢炔基化仍然具有挑战性。在此,我们开发了一种钯催化的未活化末端烯烃的马尔可夫尼科夫加氢炔基化反应,为在温和条件下合成支链炔基化合物提供了一种有效的方法。该反应具有优异的官能团耐受性、良好的反应产率和优异的区域选择性。此外,通过引入空间庞大的手性 Pyox 配体,也实现了具有中等对映选择性的不对称加氢炔基化反应。