bromides. The reaction proceeds efficiently when a combination of a highly substituted bromoalkene and a hydrazone derived from a ketone are employed, pointing to the convenience of a sterically encumbered environment. This unprecedented process allows for the stereocontrolled preparation of highly substituted dienes and polyenes.
通过N-
甲苯磺酰hydr与烯基
溴化物之间的
钯催化交叉偶联,描述了一种合成多取代共轭二烯的新方法。当使用高度取代的
溴代烯烃和衍生自酮的a的组合时,反应有效地进行,这指出了空间受限环境的便利。这一空前的过程允许立体控制制备高度取代的二烯和多烯。