Department of Chemistry, UGC Sponsored Centre for Advanced Studies-II, Guru Nanak Dev University, Amritsar, 143005, Punjab, India.
Chem Asian J. 2020 Mar 16;15(6):892-898. doi: 10.1002/asia.201901687. Epub 2020 Feb 25.
A photoredox catalytic ensemble consisting of CuO-Fe O nanocomposites and oligomeric derivative of phenazine has been developed. The prepared system acts as an efficient photoredox catalyst for C-N bond formation reaction via SET mechanism under 'green' conditions (aerial environment, mixed aqueous media, recyclable), requiring less equivalents of base and amine substrate. The present study demonstrates the significant role of supramolecular assemblies as photooxidants and reductants upon irradiation and their important contribution towards the activation of the metallic centre through energy transfer and electron transfer pathways. The potential of oligomer 4: CuO-Fe O has also been explored for C-C bond formation reactions via the Sonogashira protocol.
一种由 CuO-FeO 纳米复合材料和吩嗪的齐聚衍生物组成的光氧化还原催化体系已经被开发出来。该制备体系在“绿色”条件（空气环境、混合水相介质、可回收）下通过 SET 机制作为 C-N 键形成反应的有效光氧化还原催化剂，需要较少当量的碱和胺底物。本研究表明，超分子组装体在光照下作为光氧化剂和还原剂的重要作用，以及它们通过能量转移和电子转移途径对金属中心的活化的重要贡献。通过 Sonogashira 协议，也探索了齐聚物 4：CuO-FeO 在 C-C 键形成反应中的潜力。
