Cross-dehydrogenative coupling of coumarins with Csp<sup>3</sup>–H bonds using an iron–organic framework as a productive heterogeneous catalyst
作者:Son H. Doan、Vu H. H. Nguyen、Thuong H. Nguyen、Phuc H. Pham、Ngoc N. Nguyen、Anh N. Q. Phan、Thach N. Tu、Nam T. S. Phan
DOI:10.1039/c8ra00872h
日期:——
heterogeneous catalyst for the cross-dehydrogenative coupling of coumarins with Csp3–H bonds in alkylbenzenes, cyclohexanes, ethers, and formamides. The combination of DTBP as the oxidant and DABCO as the additive led to high yields of coumarin derivatives. The VNU-20 was more active towards this reaction than numerous other homogeneous and heterogeneous catalysts. Heterogeneous catalysis was confirmed
铁-有机骨架 VNU-20 用作香豆素与 Csp 3交叉脱氢偶联的活性非均相催化剂烷基苯、环己烷、醚和甲酰胺中的 -H 键。DTBP 作为氧化剂和 DABCO 作为添加剂的组合导致香豆素衍生物的高产率。VNU-20 比许多其他均相和非均相催化剂对该反应更活跃。使用 VNU-20 催化剂的交叉脱氢偶联转化证实了非均相催化,液相中活性铁物种的贡献微不足道。铁基框架多次重复用于香豆素的功能化,而催化效率没有显着下降。据我们所知,香豆素的这些反应以前没有使用非均相催化剂进行。