题 目: Enhanced C(sp3)-H Selective Oxidation Using Efficient Polyoxometalate-Based Metal-Organic Framework Photocatalysts Synergized with Ir Metalloligands and Polyoxometalates
作 者: Jing Wang, Luoning Li, Yanan Liu, Zelong Yuan,Pengtao Ma, Jingping Wang,*and Jingyang Niu*
刊 名: Chem. Mater.
年卷页: 2024, 36, 11150-11159.
摘 要： Research Achieving efficient selective visible light-induced
Oxidation of benzyl C(sp3)-H to more valuable double-bonded compounds holds significant promise for organic synthesis. In this work, we fabricated an example of Ir metalloligand-modified POMOF crystalline material, CI-SiW, which is noteworthy as the first example of POM immobilized in a metalloligand-modified MOF via coordination bonding. Under the excitation of visible light (10W, λ = 410 nm), CI-SiW can catalyze the efficient oxidationof benzyl C(sp3)-H of isochromanewith a turnover numberandturnover frequency of 954 and 1740h-1, respectively. Excitingly, CI-SiW displays the best TOF compared with previous photocatalysts under the same conditions, realizing the maximum yield with the minimum amount of photocatalyst. Furthermore, CI-SiW had good cyclic and structural stability, and a 90.4% yield was still obtained after three reaction cycles.
