Ram Kishan, Pooja Rani, Gulshan Singh, C. M. Nagaraja
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引用次数: 0
Abstract
The capture and utilization of CO2 for sustainable synthesis of commodity products represent a significant move toward mitigating the growing atmospheric CO2 content for environmental remediation. Meanwhile, Suzuki-Miyaura and Mizoroki-Heck cross-coupling reactions are considerable tools for generating valuable feedstock compounds, such as agrochemicals, natural products, drugs, etc. In this regard, we present the strategic incorporation of catalytically active Pd(II) in a porous covalent triazine framework (CTF) composed of bipyridine sites (bpy-CTF) by postsynthetic modification. Notably, Pd(II) anchored framework, Pd(II)@bpy-CTF, demonstrated exceptional catalytic function in the cyclization of CO2 with propargylic amines and in cross-coupling reactions (Heck and Suzuki-Miyaura), producing high-value commodity products under mild conditions. Further, various electronically and sterically challenging substrates were converted into the corresponding products by using Pd(II)@bpy-CTF as a catalyst. Notably, Pd(II)@bpy-CTF exhibited efficient reusability, sustaining eight catalytic cycles without substantial degradation. The exceptional catalytic behavior of Pd(II)@bpy-CTF is accredited to high abundance of N-rich triazine units and the exposed catalytic Pd(II) sites within the one-dimensional channels of the CTF. This work establishes the potential utility of triazine-based frameworks for utilizing carbon dioxide and stabilizing catalytically active metal ions in developing highly recyclable catalysts to generate value-added chemicals efficiently.
期刊介绍:
The aim of Crystal Growth & Design is to stimulate crossfertilization of knowledge among scientists and engineers working in the fields of crystal growth, crystal engineering, and the industrial application of crystalline materials.
Crystal Growth & Design publishes theoretical and experimental studies of the physical, chemical, and biological phenomena and processes related to the design, growth, and application of crystalline materials. Synergistic approaches originating from different disciplines and technologies and integrating the fields of crystal growth, crystal engineering, intermolecular interactions, and industrial application are encouraged.