General and Efficient Intermolecular [2+2] Photodimerization of Chalcones and Cinnamic Acid Derivatives in Solution through Visible‐Light Catalysis
作者:Tao Lei、Chao Zhou、Mao‐Yong Huang、Lei‐Min Zhao、Bing Yang、Chen Ye、Hongyan Xiao、Qing‐Yuan Meng、Vaidhyanathan Ramamurthy、Chen‐Ho Tung、Li‐Zhu Wu
DOI:10.1002/anie.201708559
日期:2017.11.27
which are building blocks for a variety of biologically active molecules and natural products. However, most attempts at the above [2+2] addition have focused on solid‐state, molten‐state, or host–guest systems under ultraviolet‐light irradiation in order to overcome the competition of facile geometric isomerization of nonrigid olefins. We report a general and simple method to realize the intermolecular
[2 + 2]光环加成反应(例如,查耳酮和肉桂酸衍生物的二聚化)是构建环丁烷的独特策略,环丁烷是多种生物活性分子和天然产物的基础。然而,为了克服非刚性烯烃的简便几何异构化的竞争,大多数对上述[2 + 2]的尝试都集中在紫外光照射下的固态,熔融态或主客体系统。我们报告了一种通用且简单的方法来实现这些无环烯烃的分子间[2 + 2]二聚反应,以在可见光下以高度区域和非对映选择性的方式构建环丁烷,这为长期存在的问题提供了有效的解决方案。