Bifunctional Metal–Organic Layer with Organic Dyes and Iron Centers for Synergistic Photoredox Catalysis
作者:Yangjian Quan、Wenjie Shi、Yang Song、Xiaomin Jiang、Cheng Wang、Wenbin Lin
DOI:10.1021/jacs.1c01083
日期:2021.3.3
Fe-TPY (TPY = 4′-(4-carboxyphenyl)[2,2′:6′,2′′-terpyridine]-5,5′′-dicarboxylate) ligands. With the organic dye EY as an efficient photosensitizer and TPY-Fe(OTf)2 as the catalytic center, Hf-EY-Fe efficiently catalyzes aminotrifluoromethylation, hydroxytrifluoromethylation, and chlorotrifluoromethylation of alkenes. Hf-EY-Fe also catalyzes the synthesis of CF3-substituted derivatives of large bioactive
这里,我们报告的双官能金属-有机层(MOL)的设计中,Hf基EY-铁,通过桥接曙红Y(EY)加帽的Hf 6个次级结构单元(的SBU)用的Fe-TPY(TPY = 4' - ( (4-羧基苯基)[2,2':6',2''-叔吡啶] -5,5''-二羧酸酯)配体。以有机染料EY为有效的光敏剂,以TPY-Fe(OTf)2为催化中心,Hf-EY-Fe有效地催化烯烃的氨基三氟甲基化,羟基三氟甲基化和氯三氟甲基化。Hf-EY-Fe还催化CF 3的合成大生物活性分子(如鱼藤酮,雌酮和阿达帕林)的α-取代衍生物,尺寸最大为2.2 nm。EY与铁中心之间的距离以及它们在Hf-EY-Fe中的位点隔离增强了催化活性,同时抑制了它们的相互失活,从而导致高达1840的高周转率和MOL催化剂的良好可回收性。