Imposing Latency in Ruthenium Sulfoxide-Chelated Benzylidenes: Expanding Opportunities for Thermal and Photoactivation in Olefin Metathesis
作者:Gal Segalovich-Gerendash、Illya Rozenberg、Nebal Alassad、Noy B. Nechmad、Israel Goldberg、Sebastian Kozuch、N. Gabriel Lemcoff
DOI:10.1021/acscatal.0c00676
日期:2020.4.17
Herein we show the design and synthesis of an electron-rich, sulfoxide-chelated, ruthenium benzylidene. In contrast to previously reported sulfoxide-chelated ruthenium benzylidenes, this complex is more stable in a cis-dichloro conformation and is thus latent in typical olefin metathesis reactions. The complex was characterized by NMR, UV–vis, and X-ray spectroscopy, alongside density functional theory
本文中,我们展示了富电子的亚砜螯合钌亚苄基的电子的设计和合成。与以前报道的亚砜螯合钌亚苄基相反,该络合物在顺式二氯构象,因此在典型的烯烃复分解反应中具有潜在性。该复合物的特征在于NMR,UV-vis和X射线光谱学以及密度泛函理论计算。潜在的预催化剂可以被热活化,根据溶剂的不同,可以被UV-C或可见光活化。此外,还开发出了原始的“热色”正交序列,并通过使用硫醚螯合的配合物进一步改进了该反应,其中发散的两步合成方法只能根据不同的顺序生成二氢呋喃或二氢吡喃。施加刺激,热或光。