Photoactivated Transition-Metal Triggers for Ambient Temperature Enediyne and Dienyne Cyclization: Ruthenium-η<sup>6</sup>-Naphthalene Complexes
作者:Pengjin Qin、Stephen K. Cope、Han Steger、Kate M. Veccharelli、Ryan L. Holland、David M. Hitt、Curtis E. Moore、Kim K. Baldridge、Joseph M. O’Connor
DOI:10.1021/acs.organomet.7b00589
日期:2017.10.23
A persistent challenge confronting potential applications of the Bergman cycloaromatization reaction is the development of methods for spatiotemporal control of diradical formation. Photochemical variants (photo-Bergman cycloaromatizations) have thus far met with limited success, failing completely in the case of acyclic enediynes. Here we describe the development of efficient photoactivated transition-metal
Bergman环芳化反应的潜在应用面临的持续挑战是双基形成时空控制方法的发展。迄今为止,光化学变体(光-Bergman环芳族化)仅获得了有限的成功,在无环烯二炔的情况下完全失败了。在这里,我们描述了有效的光活化过渡金属络合物的发展,该络合物允许在环境温度下时空控制烯二炔环芳烃化。该策略依赖于对空气和水分稳定的钌萘配合物,这些配合物经过萘配体的光化学分解,从而生成烯二炔结合和环芳构化的配位点。在光化学条件下,相同的钌萘配合物也可引发二烯炔环化。