An Acid Stable Metal-Organic Framework as an Efficient and Recyclable Catalyst for the O−H Insertion Reaction of Carboxylic Acids
作者:Yingxia Wang、Hao Cui、Li Zhang、Cheng-Yong Su
DOI:10.1002/cctc.201800597
日期:2018.9.7
Although metal‐organic frameworks (MOFs) can be used in many reactions, their applications in acid involved reactions are limited due to their instability in acid environment. As a stable MOF, the Ir(III)‐porphyrin metal‐organic framework of the formula [(Hf6(μ3‐O)8(OH)2(H2O)10)2(Ir(TCPP)Cl)3]⋅solvents (Ir‐PMOF‐1(Hf)) can sustain its structure upon treatments in different pH (0–11) aqueous solutions
尽管金属有机骨架(MOF)可以用于许多反应,但由于它们在酸性环境中的不稳定性,因此在涉及酸的反应中的应用受到限制。作为稳定的MOF中,IR(III) -卟啉金属-有机式框架[(HF 6(μ 3 -O)8(OH)2(H 2 O)10)2(铱(TCPP)Cl)的3 ]·溶剂(Ir-PMOF- 1(Hf))在不同pH(0-11)水溶液中处理后可以保持其结构。在这项工作中,Ir‐PMOF‐ 1(Hf)已在羧酸与重氮化合物的OH插入反应中进行了研究。催化结果表明,低至0.042 mol%的Ir-PMOF- 1(Hf)可以促进酸O-H的插入,最大周转数(TON)为1381,此外,它还可以回收再利用10次结果表明Ir-PMOF- 1(Hf)对于这种涉及酸的反应非常有效。Ir-PMOF- 1(Hf)也可以小型化至纳米级(直径范围为400-500 nm),并且在TON(8400)催化方面可以看到很大的改进。