Visible-Light-Induced External Oxidant-Free Oxidative Phosphonylation of C(sp<sup>2</sup>)–H Bonds
作者:Linbin Niu、Jiamei Liu、Hong Yi、Shengchun Wang、Xing-An Liang、Atul K. Singh、Chien-Wei Chiang、Aiwen Lei
DOI:10.1021/acscatal.7b02418
日期:2017.11.3
catalytic methods for the phosphonylation of C(sp2)–H bonds is important. Herein, we achieve a visible-light-induced external oxidant-free oxidative phosphonylation of C(sp2)–H bonds via the combination of photocatalysis and proton-reduction catalysis. Mechanistic studies indicate that the visible-light-induced electron-rich arene radicalcation is the key reactive intermediate. The synthetic application
Phosphonate‐Modified UiO‐66 Brønsted Acid Catalyst and Its Use in Dehydra‐Decyclization of 2‐Methyltetrahydrofuran to Pentadienes
作者:Matheus Dorneles de Mello、Gaurav Kumar、Tarnuma Tabassum、Sheetal K. Jain、Tso‐Hsuan Chen、Stavros Caratzoulas、Xinyu Li、Dionisios G. Vlachos、Songi‐I Han、Susannah L. Scott、Paul Dauenhauer、Michael Tsapatsis
DOI:10.1002/ange.202001332
日期:2020.8.3
activity and selectivity in certain Bronsted acid catalyzed reactions for biomass conversion. In an effort to achieve similar performance with catalysts having well-defined sites, we report the incorporation of Bronsted acidity to metal-organic frameworks with the UiO-66 topology, achieved by attaching phosphonic acid to the 1,4-benzenedicarboxylate ligand and using it to form UiO-66-PO3 H2 by post-synthesis