Chinese Journal of Catalysis ›› 2022, Vol. 43 ›› Issue (7): 1667-1673.DOI: 10.1016/S1872-2067(21)63859-7

• Special column on catalytic conversion of CO2 Previous Articles     Next Articles

Visible-light photoredox-catalyzed carboxylation of benzyl halides with CO2: Mild and transition-metal-free

Ke Jinga, Ming-Kai Weia, Si-Shun Yana, Li-Li Liaoa, Ya-Nan Niua, Shu-Ping Luob, Bo Yua,*(), Da-Gang Yua,#()   

  1. aKey Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, Sichuan, China
    bState Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014, Zhejiang, China
  • Received:2021-04-13 Accepted:2021-05-22 Online:2022-07-18 Published:2021-06-15
  • Contact: Bo Yu, Da-Gang Yu
  • About author:Da-Gang Yu (College of Chemistry, Sichuan University) was invited as a young member of the 6th Editorial Board of Chin. J Catal. in 2020. Prof. Da-Gang Yu received his B.S. degree from Sichuan University (P. R. China) in 2007 and Ph.D. degree with Prof. Zhang-Jie Shi from Peking University (P. R. China), 2012. He carried out postdoctoral research with Humboldt fellowship in the group of Prof. Frank Glorius, Muenster University (Germany). Since 2015, he has been working independently in Sichuan University (China) with support from “The Thousand Young Talents Plan” and the National Natural Science Foundation of China‒Outstanding Young Scholars. His research interests mainly focus on novel transformations of CO2, radical chemistry and novel transition-metal catalysis. He has coauthored about 90 peer-reviewed papers and 11 patents.
  • Supported by:
    National Natural Science Foundation of China(21822108);National Natural Science Foundation of China(21772129);China Postdoctoral Science Foundation(2020M683301);Sichuan Science and Technology Program(20CXTD0112)

Abstract:

The visible-light photoredox-catalyzed carboxylation of benzyl chlorides and bromides with CO2 has been reported. With inexpensive organic dyes as photocatalysts and amines as electron donors, this carboxylation proceeds well in the absence of sensitive organometallic reagents, transition metal catalysts, or metallic reductants. A wide range of commercially available and inexpensive benzyl halides undergo such carboxylation to give valuable aryl acetic acids, including several pharmaceutical molecules and drug precursors, in moderate to high yields. Moreover, this reaction features mild reaction conditions (one atmospheric pressure of CO2 and room temperature), broad substrate scope, good functional group tolerance, easy scalability, and low catalyst loading, thus providing an efficient approach for the assembly of aryl acetic acids.

Key words: Carbon dioxide, Visible-light photoredox catalysis, Carboxylation, Aryl acetic acids, Benzyl halides