A porous copolymer of an IL with divinylbenzene was prepared and applied as a support for Pd nanoparticles. The supported Pd nanocatalyst was found to be extremely active for Suzuki-Miyaura reaction of aryl bromides and chlorides with phenylboronic acid even with 10 ppm Pd loading under air in water.
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http://dx.doi.org/10.1039/c0cc04498a | DOI Listing |
Chemistry
January 2025
Hunan Normal University, Chemistry, Yue Lu Qu Lushan Road 36, 410081, Changsha, CHINA.
In order to examine the effects of the fused heterole on the electronic properties of aromatic and antiaromatic smaragdyrins, 2,3-thiophene- and 2,3-indole-fused [20]smaragdyrins were synthesized by Suzuki-Miyaura coupling and subsequent oxidative fusion reaction, and were reduced with NaBH4 to the corresponding [22]smaragdyrins. Fused-thiophene- and fused-pyrrole-bridged [20]- and [22]smaragdyrin dimers were also synthesized in the similar manner. The installed fused heteroles mitigate the paratropic ring current of the [20]smaragdyrin but exert only minor effects on the diatropic ring current of the [22]smaragdyrin.
View Article and Find Full Text PDFInorg Chem
January 2025
College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Normal University, Jinan 250014, P. R. China.
As an indispensable member of the reticular material family, metal-carbon-based organometallic frameworks (OMFs) remain largely underexplored, and no chiral OMFs (COMFs) have been reported thus far. Herein, we first report the construction of COMFs from a Pd-isocyanide OMF via nucleophilic addition to the Pd-isocyanide moiety with optically pure amines. The obtained Pd-bis(acyclic diaminocarbene) (Pd-BADC)-derived chiral OMFs display excellent applicability and can be reusable chiral catalysts to highly promote asymmetric Strecker and Suzuki-Miyaura cross-coupling reactions in a heterogeneous way.
View Article and Find Full Text PDFMolecules
December 2024
Laboratoire de Chimie de Coordination, CNRS, Toulouse-INP, Université de Toulouse, 31000 Toulouse, France.
In recent years, there has been growing interest in the development of greener alternatives to traditional reagents used in carbon-carbon coupling reactions, particularly in response to environmental concerns. The commonly used aryl halides, despite being highly reactive in the Suzuki-Miyaura coupling (SMC), pose significant environmental risks. As a result, research has shifted towards exploring the use of phenols, which are widely accessible and environmentally benign.
View Article and Find Full Text PDFChem Asian J
January 2025
Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Hubei, Wuhan, 430074, China.
Using a direct knitting strategy, we successfully prepared a novel heterogeneous catalyst consisting of pyridine-bridged bis(imidazolium-2-ylidene) palladium complexes (CNC-Pd) embedded in a knitted network polymer. The resulting catalysts (HCP-CNC-Pd-d) exhibited high specific surface areas of 982 m g with microporous and mesoporous structures. The large surface area enhances contact between the substrate and the catalytic center, while the strong chelation between CNC and the metal ion ensures the catalyst's durability.
View Article and Find Full Text PDFOrg Biomol Chem
January 2025
Department of Chemistry, CMS College Kottayam (Autonomous), Kottayam, Kerala, 686001, India.
The Suzuki-Miyaura Coupling (SMC) reaction is a powerful method for forming carbon-carbon bonds in organic synthesis. Recent advancements in SMC reactions have introduced first-row transition metal catalysts, with zinc garnering significant interest due to its cost-effective and eco-friendly nature. Despite progress in experimental protocols, the mechanistic details of zinc-catalyzed SMC reactions are limited.
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