title: Triazole-Containing Dendrimer-like Core Cross-Linked Micelles that Stabilize Pd Nanoparticles as Heterogenized Homogeneous Catalysts for Room-Temperature Suzuki-Miyaura Reactions in Water.
abstract: Featuring the advantages of both homogeneous (high activity) and heterogeneous (recyclability) catalysts, heterogenized homogeneous catalysts (e.g., dendrimer-stabilized metal nanoparticles) have received much attention in recent years. Here, we develop a new triazole-containing dendrimer-like core cross-linked micelle (DCCM) stabilized Pd nanoparticles as a highly efficient heterogenized homogeneous catalyst for the Suzuki-Miyaura reaction. Both arylboronic acids and iodobenzenes with diverse electronic properties performed with excellent reactivity under the mild conditions of room temperature, water as the sole solvent, and as low as 0.5 % catalyst loading. Importantly, the Pd@triazole-DCCMs can tolerate various functional groups well (e.g., alcohol, aldehyde, ester, acyl, amino, and cyano, etc.) and give the corresponding biphenyl products in high yields. Recycling experiments suggest that the new heterogenized homogeneous catalyst can be recovered simply and reused many times with negligible activity change.
authors.affiliation: National Engineering Research Centre for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, China.
authors.forename: Bing
authors.initials: B
authors.lastname: Li
authors.affiliation: National Engineering Research Centre for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, China.
authors.forename: Yangyang
authors.initials: Y
authors.lastname: Yu
authors.affiliation: Science and Technology on Surface Physics and Chemistry Laboratory, Mianyang, 621907, Sichuan, China.
authors.forename: Pengxiang
authors.initials: P
authors.lastname: Zhao
authors.affiliation: National Engineering Research Centre for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, China.|College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, China.
authors.forename: Shiyong
authors.identifier: http://orcid.org/0000-0001-7633-358X
authors.initials: S
authors.lastname: Zhang
keywords: Suzuki-Miyaura reaction; dendrimers; heterogenized homogeneous catalysts; micelles; palladium nanoparticles