Triton B–Assisted, Efficient, and Convenient Synthesis of 3-Indolyl-3-hydroxy Oxindoles in Aqueous Medium
作者:H. M. Meshram、D. Aravind Kumar、P. Ramesh Goud、B. Chennakesava Reddy
DOI:10.1080/00397910902916072
日期:2009.12.15
An efficient and convenient synthesis of 3-indolyl-3-hydroxy oxindole is described by the reaction of isatin with indole in the presence of Triton B in an aqueous medium.
在水性介质中,在 Triton B 存在下,靛红与吲哚反应,描述了一种有效且方便的 3-吲哚基-3-羟基羟吲哚合成。
Supramolecular Synthesis of 3-Indolyl-3-hydroxy Oxindoles under Neutral Conditions in Water
[GRAPHICS]Various 3-indolyl-3-hydroxy oxindoles were prepared for the first time by supramolecular catalysis involving the reaction of beta-CD:isatin complexes with indoles under neutral conditions in water. beta-Cyclodextrin can be recovered and reused a number of times without loss of activity.
Preparation, characterization, and catalysis application of nano-rods zinc oxide in the synthesis of 3-indolyl-3-hydroxy oxindoles in water
作者:Mona Hosseini-Sarvari、Mina Tavakolian
DOI:10.1016/j.apcata.2012.07.009
日期:2012.10
ZnO nano-rods is synthesized successfully by a new method employing Zn(OAc)(2)center dot 2H(2)O. NH3 and polyethylene glycol (PEG, M-w = 2000). X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and BET surface area measurement were used to characterize the structure and morphology of the catalyst. Nano-rods ZnO has been found highly effective and recyclable catalyst for synthesis of 3-indolyl-3-hydroxy oxindole derivatives by Friedel-Crafts reaction of indole with isatins in excellent yields, in water. (C) 2012 Elsevier B.V. All rights reserved.