نتایج جستجو برای: indole derivatives

تعداد نتایج: 114196  

In this study, novel CuO/g-C3N4 nanocomposite was simply synthesized by impregnation of g-C3N4 with CuO nanoparticles. Then, the heterogeneous catalyst was characterized by various techniques including Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), thermogravimetric analysis (TGA) and transmission electron microscopy (...

Journal: :Mediterranean Journal of Chemistry 2023

<p>In this research, we have described a facile and user-friendly protocol for the formation of 2((1H-Indole-3yl)(Phenyl)methyl)malononitrile derivatives using recoverable efficient TiO2 nanocatalyst. This is simple incredibly synthesis novel derivatives. Nanoscale used as catalyst. Since TiO<sub>2 </sub>has more surface area easily binds with active site reactive molecule ini...

2014
Fuad Fares

Indoles are aromatic heterocyclic organic compound and became the precursor to many pharmaceuticals. Indoles are found naturally in cruciferous plants and indole derivatives, indole-3-carbinole (I3C) and 3, 3’-diindolylmethane (DIM) can also be synthesized by a variety of methods. In vitro studies indicated that I3C and DIM inhibit cell proliferation, caused cell cycle arrest at G1 phase and in...

Journal: :Chemical communications 2011
Jing An Ning-Jie Chang Li-Dong Song Yu-Qin Jin Ying Ma Jia-Rong Chen Wen-Jing Xiao

An efficient and general approach to oxazino[4,3-a]indole architectures is described. The addition-cyclization cascade of (1H-indol-2-yl)methanols with vinyl sulfonium salts affords oxazino[4,3-a]indole derivatives in high yields.

Journal: :International Journal of Organic Chemistry 2022

An uncatalyzed and easily accessible synthetic approach for the preparation of 3-aroylindoles was investigated using nitrosoarenes aromatic terminal ethynyl ketones. Indole derivatives were produced in good yields excellent regioselectivity. Functionalizations indole products carried out affording highly valuable versatile compounds. The indolization protocol studied as a fundamental step prava...

Journal: :Chemical communications 2011
Yanyang Qu Fang Ke Li Zhou Zhengkai Li Haifeng Xiang Di Wu Xiangge Zhou

An efficient three-component reaction of indole, aldehyde, and malononitrile in water catalyzed by a copper(II) sulfonato Salen complex afforded 3-indole derivatives in good to excellent yields up to 97%.

Journal: :Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologicas 2005
V F Ximenes I M M Paino O M M de Faria-Oliveira L M da Fonseca I L Brunetti

Hypochlorous acid (HOCl) released by activated leukocytes has been implicated in the tissue damage that characterizes chronic inflammatory diseases. In this investigation, 14 indole derivatives, including metabolites such as melatonin, tryptophan and indole-3-acetic acid, were screened for their ability to inhibit the generation of this endogenous oxidant by stimulated leukocytes. The release o...

Journal: :Organic & biomolecular chemistry 2014
Jian Li Hongni Wang Jiangtao Sun Yang Yang Li Liu

A mild gold-catalyzed three-component dehydrogenative coupling of terminal alkynes to amines and indole-2-carboxaldehyde has been developed, which provides a practical synthetic strategy for the synthesis of indole derivatives.

Journal: :ARKIVOC : free online journal of organic chemistry 2010
Natalia Chernyak David Tilly Zhou Li Vladimir Gevorgyan

A convenient method for construction of polycyclic fused nitrogen-containing heterocycles has been developed. The methodology involves palladium-catalyzed intermolecular carbopalladation-annulation cascade reaction of haloaryl heterocyclic derivatives with different alkynes under relatively mild reaction conditions. Thus, the palladium-catalyzed cascade cyclization of bromophenyl derivatives of...

Journal: :Organic & biomolecular chemistry 2011
Victoria A Vaillard Roberto A Rossi Sandra E Martín

Intramolecular N-arylation of pyrrole and indole carboxamides and carboxylates linked with a pendant haloarene by Cu-catalyzed reactions to synthesize pyrrole and indole quinoxalinone and oxazinone derivatives is reported. The ring closure reactions were carried out by conventional heating and MW irradiation. The use of conventional heating affords moderate to good yields of the quinoxalinone a...

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