Fused pyridine-based bicyclic compounds having the structure of Formula I, as defined herein, pharmaceutically acceptable salts thereof, preparation, compositions, and disease treatment therewith. This abstract does not define or limit the invention.
Fused pyridine-based bicyclic compounds having the structure of Formula I, as defined herein, pharmaceutically acceptable salts thereof, preparation, compositions, and disease treatment therewith. This abstract does not define or limit the invention.
Site Isolation in Metal–Organic Layers Enhances Photoredox Gold Catalysis
作者:Haifeng Zheng、Yingjie Fan、Yang Song、Justin S. Chen、Eric You、Steven Labalme、Wenbin Lin
DOI:10.1021/jacs.2c03062
日期:2022.6.22
Ru(bipyridine)32+-type photosensitizers and (phosphine)-AuCl catalysts for photoredox Au-catalyzed cross-coupling of allenoates, alkenes, or alkynes with aryldiazonium salts to afford furanone, tetrahydrofuran, or aryl alkyne derivatives, respectively. Site isolation of (phosphine)-AuCl complexes in Hf–Ru–Au prevents Au catalyst deactivation via ligand redistribution, Au(I) disproportionation, and
在此,我们报道了金属有机层 Hf-Ru-Au 的合成,该层含有 Ru(联吡啶) 3 2+型光敏剂和 (膦)-AuCl 催化剂,用于光氧化还原 Au 催化的联烯酸酯、烯烃的交叉偶联,或炔烃与芳基重氮盐分别得到呋喃酮、四氢呋喃或芳基炔烃衍生物。Hf-Ru-Au 中(膦)-AuCl 配合物的位点隔离可防止 Au 催化剂通过配体再分布、Au(I) 歧化和芳基膦还原消除而失活,而 Ru 光敏剂和 Au 催化剂之间的接近度提高了催化效率,在交叉偶联反应中,活性比均相对照高 14-200 倍。
Synthesis of Tetrahydrofurans and Pyrrolidines by Copper-Catalyzed Oxy/Aminoarylation of Alkenes
作者:Yohann Landrain、Gwilherm Evano
DOI:10.1021/acs.orglett.3c01265
日期:2023.6.2
An efficient copper-catalyzed inter/intramolecular oxy/aminoarylation of γ-hydroxy/aminoalkenes with diaryliodonium triflates is reported. Simple activation of these arylating agents with copper(II) triflate in dichloromethane triggers a smooth activation of the alkene, which is simultaneously trapped by the internal nucleophile, yielding, depending upon its nature, a range of highly substituted tetrahydrofurans
报道了 γ-羟基/氨基烯烃与二芳基碘鎓三氟甲磺酸盐的有效铜催化分子间/分子内氧/氨基芳基化。在二氯甲烷中用三氟甲磺酸铜 (II) 简单激活这些芳基化剂会触发烯烃的平稳激活,同时被内部亲核试剂捕获,根据其性质产生一系列高度取代的四氢呋喃和吡咯烷。此外发现环化是立体特异性的,非对映异构烯烃产生环化产物的非对映异构体,并且可以扩展到氧炔基化。