Visible‐Light‐Enhanced Suzuki–Miyaura Reactions of Aryl Chlorides in Water with Pd NPs Supported on a Conjugated Nanoporous Polycarbazole
Bin Guo1,2，Hong‐Xi Li 1, *（李红喜），Cheng‐Hao Zha 1，David James Young3，Hai‐Yan Li1，Jian‐Ping Lang 1,2, *（郎建平）
1 College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123 P.R. China
2 State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200032 P.R. China
3 College of Engineering, Information Technology and Environment, Charles Darwin University, Northern Territory, 0909 Australia
CHEMSUSCHEM，2019，12（7），1421--1427
The visible‐light‐enhanced catalytic activation of aryl chlorides for Suzuki–Miyaura cross‐coupling (SMC) reactions is highly challenging because of the strength of the C−Cl bond. In this work, palladium nanoparticles (Pd NPs) were grown on a conjugated nanoporous polycarbazole (CNP), named Pd/CNP. The hybrid material Pd/CNP could catalyze the SMC reactions of aryl chlorides with arylboronic acids in water under blue LED irradiation at room temperature with high efficiency. This protocol exhibited good functional group tolerance and the catalyst could be recycled without significant loss of its catalytic activity. CNP not only provided photogenerated electrons to enrich the electron density of the Pd NPs but also generated holes for the activation of the arylboronic acids.
链接：https://onlinelibrary.wiley.com/doi/abs/10.1002/cssc.201802918g
