Metal-free visible-light-promoted intermolecular [2+2]-cycloaddition of 3-ylideneoxindoles |
| |
| Authors: | Ling-Ling Wu Gao H. Yang Zhi Guan Yan-Hong He |
| |
| Affiliation: | 1. Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China;2. Chemistry Department, College of Saint Benedict and Saint John''s University, MN 56374, USA |
| |
| Abstract: | ![]()
The Rose Bengal sensitized intermolecular [2 + 2]-cycloaddition of 3-ylideneoxindoles for the synthesis of spirocyclic oxindoles was developed successfully under visible light irradiation conditions. The cycloaddition products were obtained in good yields (up to 93%) with excellent diastereoselectivity and regioselectivity by using a low loading of Rose Bengal (0.125 mol%) as a triplet sensitizer. This work demonstrates the potential benefits of Rose Bengal in visible light catalysis. |
| |
| Keywords: | Visible light Rose Bengal 3-ylideneoxindoles [2+2]-cycloaddition Spirocyclic oxindoles |
| 本文献已被 ScienceDirect 等数据库收录！ |
