Visible Light Induced Bifunctional Rhodium Catalysis for Decarbonylative Coupling of Imides with Alkynes. (12th November 2020)

• Record Type: Journal Article
• Authors: Min, Xiang‐Ting; Ji, Ding‐Wei; Guan, Yu‐Qing; Guo, Shi‐Yu; Hu, Yan‐Cheng; Wan, Boshun; Chen, Qing‐An
• Is Part Of: Angewandte Chemie. Volume 133:Number 3(2021)
• Page Start: 1607
• Page End: 1611
• Publication Date: 2020-11-12
• Subjects: alkynes -- C−H activation -- heterocycles -- photochemistry -- rhodium; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.202010782
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: Transition metal catalyzed decarbonylation offers a distinct synthetic strategy for new chemical bond formation. However, the π‐backbonding between CO π* orbitals and metal center d ‐orbitals impedes ligand dissociation to regenerate the catalyst under mild reaction conditions. Developed here is visible light induced rhodium catalysis for decarbonylative coupling of imides with alkynes under ambient conditions. Initial mechanistic studies suggest that the rhodium complex simultaneously serves as the catalytic center and photosensitizer for decarbonylation. This visible light promoted catalytic decarbonylation strategy offers new opportunities for reviewing old transformations with ligand dissociation as a rate‐determining step. Abstract : Visible light induced rhodium catalysis has been developed for decarbonylative coupling of imides with alkynes under ambient conditions. Initial mechanistic studies suggest that the rhodium complex simultaneously serves as the catalytic center and photosensitizer for decarbonylation.