Kamboj Nisha, Mali Ghanshyam, Lama Prem, Erande Rohan D, Metre Ramesh K
Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur 342037, Rajasthan, India.
CSIR-Indian Institute of Petroleum, Haridwar Road, Mokhampur, Dehradun 248005, India.
ACS Omega. 2022 Mar 1;7(10):8789-8797. doi: 10.1021/acsomega.1c07051. eCollection 2022 Mar 15.
A square-planar [CuL] complex , based on the redox-active phenalenyl unit LH = 9,9'-(ethane-1,2-diylbis(azanediyl))bis(1-phenalen-1-one), is prepared and structurally characterized by single-crystal X-ray diffraction analysis. Complex crystallizes at room temperature with the 1 space group. The molecular structure of reveals the presence of intriguing C-H···Cu intermolecular anagostic interactions of the order ∼2.7715 Å. Utilizing the presence of anagostic interactions and the free nonbonding molecular orbitals (NBMOs) of the closed-shell phenalenyl unit in , the oxidation reactions of some industrially important polycyclic aromatic hydrocarbons (PAHs) in the presence of the [CuL] complex under very mild conditions have been reported. The direct conversion of anthracene-9-carbaldehyde to 9,10-anthraquinone in one step concludes that the catalyst shows dual activity in the chemical transformations. This also includes the first report of a "single-step" catalytic transformation of pyrene-1-carbaldehyde to the synthetically difficult pyren-4-ol, a precursor for the synthesis of several novel fluorescent probes for cell imaging.
基于氧化还原活性菲咯啉单元LH = 9,9'-(乙烷-1,2-二基双(氮杂二基))双(1-菲咯啉-1-酮)制备了一种平面正方形[CuL]配合物，并通过单晶X射线衍射分析对其结构进行了表征。配合物在室温下以1空间群结晶。其分子结构揭示了存在约2.7715 Å的有趣的C-H···Cu分子间次级相互作用。利用次级相互作用的存在以及配合物中闭壳菲咯啉单元的自由非键分子轨道（NBMOs），报道了在非常温和的条件下，[CuL]配合物存在时一些工业上重要的多环芳烃（PAHs）的氧化反应。蒽-9-甲醛一步直接转化为9,10-蒽醌表明该催化剂在化学转化中具有双重活性。这还包括首次报道将芘-1-甲醛“一步”催化转化为合成困难的芘-4-醇，芘-4-醇是合成几种用于细胞成像的新型荧光探针的前体。
