我们报告了通过三键插入来实现 π 供体 - π 受体取代发色团的光化学引发双碳同系化的概念。在滑入模块和发色团之间实现苯基连接器,可以通过五元发色团的无金属环一锅双碳环扩展来合成环七[ b ]吲哚型结构单元。辐照后结构阐述提供了吲哚并[2,3- d ]托酮化合物家族的创始成员。对这种多键重组过程的控制实验与计算化学相结合,为机械假说奠定了基础。
A novel and selective palladium-catalyzed carbonylative annulation process for the synthesis of 3-(halomethylene)indolin-2-ones was demonstrated. In the presence of PdX2 and CuX2, 3-(halomethylene)indolin-2-ones were selectively obtained from the carbonylative annulations of 2-(1-alkynyl)benzenamines with CO in moderate to good yields.
Silver-Catalyzed Tandem Ammonolysis-Cyclization of 2-Alkynylbenzenamines with Tetraalkylthiuram Disulfides to 4-Methylene-4H-benzo[d][1,3]thiazin-2-amines
In the presence of AgBF4, the ammonolysis-cyclization tandem reactions of various 2-alkynylbenzenamines with tetraalkylthiuram disulfides afforded the corresponding 4-methylene-4H-benzo[d][1,3]thiazin-2-amines in moderate to good yields.
Novel Peptidomimetics of the Antifungal Cyclic Peptide Rhodopeptin: Synthesis of Mimetics and Their Antifungal Activity
作者:Haruko C. Kawato、Kiyoshi Nakayama、Hiroaki Inagaki、Toshiharu Ohta
DOI:10.1021/ol016394w
日期:2001.11.1
[reaction: see text]. Novel peptidomimetics of the antifungalcyclicpeptide Rhodopeptin were synthesized. As with the cyclicpeptides, the presence of all three Rhodopeptin side chains was found to be indispensable for peptidomimetic activity. We discovered new compounds exhibiting greater antifungalactivity and improved physiochemical properties in comparison to the parent compounds.
A novel and efficient palladium-catalyzed cascade annulation/arylthiolation reaction has been developed to afford functionalized 3-sulfenylbenzofuran and 3-sulfenylindole derivatives in moderate to good yields from readily available 2-alkynylphenols and 2-alkynylamines in ionic liquids. This protocol provides a valuable synthetic tool for the assembly of a wide range of 3-sulfenylbenzofuran and 3-sulfenylindole
Tunable Synthesis of Indolo[3,2-<i>c</i>]quinolines or 3-(2-Aminophenyl)quinolines via Aerobic/Anaerobic Dimerization of 2-Alkynylanilines
作者:Ruixue Jia、Bin Li、Rong Liang、Xinying Zhang、Xuesen Fan
DOI:10.1021/acs.orglett.9b01534
日期:2019.7.5
2-c]quinoline or 3-(2-aminophenyl)quinoline derivatives through Rh(III)-catalyzed stepwise dimerization of 2-alkynylanilines under aerobic or anaerobic conditions is presented. Notably, hexafluoroisopropanol is found to be a crucial solvent and promoter for the success of these reactions. In addition, the utility of the products thus obtained was showcased by their faciletransformations into the pharmaceutically
在本文中,提出了在有氧或无氧条件下通过Rh(III)催化的2-炔基苯胺的逐步二聚反应,空前选择性地合成吲哚[3,2- c ]喹啉或3-(2-氨基苯基)喹啉衍生物。值得注意的是,发现六氟异丙醇是这些反应成功的关键溶剂和促进剂。另外,如此获得的产物的实用性通过它们容易地转化成药学上和光物理上重要的萘啶衍生物而得以展示。