Stereoselective Synthesis of <i>trans</i>-Stilbenes through Silver-Catalyzed Self-Coupling of <i>N</i>-Triftosylhydrazones: An Experimental and Theoretical Study
作者:Qingmin Song、Yue Zhao、Shaopeng Liu、Yong Wu、Zhaohong Liu
DOI:10.1021/acs.orglett.3c01040
日期:2023.5.19
efficiency with excellent stereoselectivity, broad substrate scope, and good functional group tolerance. A plausible mechanism involving nucleophilic attack of in situ generated sulfonium ylides on silver carbene was proposed on the basis of experimental results and DFT calculations, which further indicates that π–π stacking interactions play a dominant role in stereoselectivity control.
已经提出了用于构建反式二苯乙烯的银介导的N-三氟甲磺酰腙自偶联。该协议的特点是适用于分子间和分子内反应、操作简单、效率高且具有出色的立体选择性、广泛的底物范围和良好的官能团耐受性。基于实验结果和 DFT 计算,提出了原位生成的硫叶立德对银卡宾的亲核攻击机制,进一步表明 π-π 堆积相互作用在立体选择性控制中起主导作用。