通过添加以下化合物合成了一系列炔丙醇 苯乙炔到Isatin及其N-取代的衍生物。该反应涉及通过与表现为“配体样”的羰基底物的配位来活化锌试剂。研究了这些化合物对H 2 O 2诱导的PC12细胞凋亡的保护作用的生物活性以及对这些化合物对肺癌A549和P388细胞系的细胞毒性,并且几种化合物均显示出有效的活性。杂环化学杂志,46,217(2009)。
Synthesis of 3-ethynyl-3-hydroxy-2-oxindoles and 3-hydroxy-3-(indol-3-yl) indolin-2-ones using CuWO4 nanoparticles as recyclable heterogeneous catalyst in aqueous medium
acetylenes (spC-H activation) and selective synthesis of 3-hydroxy-3-(indol-3-yl) indolin-2-ones and 3,3′-bis(indolyl)indolin-2-ones (via Friedel-Crafts alkylation reaction) is reported in presence of CuWO4 (10 mol%) nanoparticles in aqueous medium. The catalyst was regenerated and reused up to 6 cycles without losing catalytic activity. This is the first report for the spC-H activation using CuWO4
Zinc-mediated synthesis of 3-alkynyl-3-hydroxyindolin-2-ones by addition of iodoalkynes to isatins
作者:Vinay K. Singh、Abhishek Upadhyay、Rana Krishna Pal Singh
DOI:10.1016/j.tetlet.2016.11.124
日期:2017.1
An efficient and economical method was developed for synthesis of 3 alkynyl-3-hydroxyindolin-2-ones by addition of iodoalkynes to isatins using zinc dust.
Cycloisomerization of Oxindole-Derived 1,5-Enynes: A Calcium(II)-Catalyzed One-Pot, Solvent-free Synthesis of Phenanthridinones, 3-(Cyclopentenylidene)indolin-2-ones and 3-Spirocyclic Indolin-2-ones
Calcium‐catalyzed regioselective synthesis of oxindole‐derived 1,5‐enynes, followed by cycloisomerization, from readily accessible 3‐hydroxy‐3‐(alkynyl)indolin‐2‐ones and styrenes in one‐pot, under solvent‐free conditions is described. This method offers the synthesis of diverse molecules: phenanthridinones, 3‐(cyclopentenylidene)indolin‐2‐ones, and 3‐spirocyclic indolin‐2‐ones are obtained through