Transition‐Metal‐Free C(sp
<sup>2</sup>
)–C(sp
<sup>2</sup>
) Cross‐Coupling of Diazo Quinones with Catechol Boronic Esters
作者:Kai Wu、Liang‐Liang Wu、Cong‐Ying Zhou、Chi‐Ming Che
DOI:10.1002/anie.202006542
日期:2020.9.7
developed. With this protocol, a variety of biaryls and alkenyl phenols were obtained in good to high yields under mild conditions. The reaction tolerates various functionalities and is applicable to the derivatization of pharmaceuticals and natural products. The synthetic utility of the method was demonstrated by the short synthesis of multi‐substituted triphenylenes and three bioactive natural products
无过渡金属的C(sp 2)-C(sp 2)开发了重氮醌与邻苯二酚硼酸酯的交叉偶联反应。通过该方案,可以在温和条件下以高收率或高收率获得各种联芳基和烯基苯酚。该反应具有多种功能,可用于药物和天然产物的衍生化。该方法的合成效用通过短取代多取代的三亚苯基和三种生物活性天然产物厚朴酚,苦味素M和呋喃呋喃A的合成得到证明。机理研究和密度泛函理论(DFT)计算表明,该反应涉及到硼酸酯由单重醌卡宾构成,然后通过逐步机理进行1,2-重排。