Dearomative Cycloadditions Utilizing an Organic Photosensitizer: An Alternative to Iridium Catalysis
作者:Alessa B. Rolka、Burkhard Koenig
DOI:10.1021/acs.orglett.0c01622
日期:2020.7.2
A highly efficient, cheap, and organic alternative to the commonly used iridium photosensitizer (Ir[dF(CF3)ppy]2(dtbpy))PF6 ([Ir–F]) is presented for visible-light energy transfer catalysis. The organic dye 2CzPN surpasses [Ir–F] in selectivity while at the same time being easily accessible in one step. The catalyst is recyclable and, due to its uncharged nature, soluble in nonpolar solvents such as
提出了一种常用的铱光敏剂(Ir [dF(CF 3)ppy] 2(dtbpy))PF 6([Ir–F])的高效,廉价和有机替代品,用于可见光能量转移催化。有机染料2CzPN的选择性超过[Ir–F],同时一步即可轻松获得。该催化剂是可回收的,并且由于其不带电荷的性质,可溶于非极性溶剂如甲苯中。此外,扩大了与可见光催化的脱芳香环加成反应相容的底物分子支架的范围。