作者:Thomas Wurm、Janina Bucher、Sarah B. Duckworth、Matthias Rudolph、Frank Rominger、A. Stephen K. Hashmi
DOI:10.1002/anie.201700057
日期:2017.3.13
Conjugated 1,5‐diynes bearing two aromatic units at the alkyne termini were converted in the presence of a gold catalyst. Under mild conditions, aryl‐substituted dibenzopentalenes were generated. Calculations predict that aurated vinyl cations are key intermediates of the reaction. A bidirectional approach provided selective access to the angular annulated product in high yield, which was explained
在金催化剂的存在下,将在炔烃末端带有两个芳族单元的共轭1,5-二炔进行了转化。在温和的条件下,会生成芳基取代的二苯并戊烯。计算预测,充气的乙烯基阳离子是反应的关键中间体。双向方法提供了高产量的角形产品的选择性访问,这通过计算得到了解释。