Palladium-Catalyzed Intramolecular Diarylation of 1,3-Diketone in Total Synthesis of (±)-Spiroaxillarone A
作者:Tingting Cao、Lei Zhu、Jun Huang、Zhen Yang
DOI:10.1021/acs.orglett.2c00153
日期:2022.2.25
congested all-carbon quaternary center was installed for the first time via a Pd-catalyzed cascade diarylation with aryl bromides and acyclic 1,3-diketones. This method was used as a key step in the total synthesis of (±)-spiroaxillarone A. Computational experimental results indicated that the selective diarylation is accelerated by the higher free-energy barriers of the endothermic transmetalation and reductive
首次通过 Pd 催化的芳基溴化物和无环 1,3-二酮的级联二芳基化安装了空间拥挤的全碳四元中心。该方法被用作(±)-螺环菌酮A全合成的关键步骤。计算实验结果表明,选择性二芳基化通过第一芳基化步骤中较高的吸热金属转移和还原消除的自由能垒加速。