Cyclization of 2′-hydroxychalcones to flavones using ammonium iodide as an iodine source: An eco-friendly approach
نویسندگان
چکیده
منابع مشابه
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رابطه ی میانِ هنر و شرایطِ اجتماعیِ زایش آن همواره در طولِ تاریخ دغدغه ی ذهنی و دل مشغولیِ اساسیِ منتقدان و نیز هنرمندان بوده است. از آنجا که هنر در قفس آهنیِ زندگیِ اجتماعی محبوس است، گسترش وابستگیِ آن با نهاد ها و اصولِ اجتماعی پیرامون، صرفِ نظر از هم سو بودن و یا غیرِ هم سو بودنِ آن نهاد ها، امری اجتناب ناپذیر به نظر می رسد. با این وجود پدیدار گشتنِ چنین مباحثِ حائز اهمییتی در میان منتقدین، با ظهورِ مکتب ما...
Green Synthesis of N-pyrroles in Water via Using ZrOCl2.8H2O as an Efficient and Eco-Friendly Catalyst
A simple and efficient protocol for the synthesis of N-substituted pyrroles from one-pot condensation reaction of 2, 5-dimethoxytetrahydrofuran with aryl/alkyl, sulfonyl and acyl amines in the presence of ZrOCl2•8H2O in water has been developed. This new method has the advantages of simple experimental and work-up procedure, high to excellent yields, easy availability, economical, eco-frien...
متن کاملAn environmentally friendly approach to the synthesis of azo dyes based on 2-naphthol using kaolin-SO3H nanoparticles
Kaolin-SO3H nanoparticles were prepared via reaction of kaolin and chlorosulfonic acid and characterized by FT-IR, XRD, FESEM, TEM, XRF, EDS, BET and TGA. The activity of this green catalyst was probed by the synthesis of aryl diazonium salts as the starting reactant and then, their diazo coupling with 2-naphthol to form azo dyes in a solvent-free medium at room temperature...
متن کاملAn environmentally friendly approach to the synthesis of azo dyes based on 2-naphthol using kaolin-SO3H nanoparticles
Kaolin-SO3H nanoparticles were prepared via reaction of kaolin and chlorosulfonic acid and characterized by FT-IR, XRD, FESEM, TEM, XRF, EDS, BET and TGA. The activity of this green catalyst was probed by the synthesis of aryl diazonium salts as the starting reactant and then, their diazo coupling with 2-naphthol to form azo dyes in a solvent-free medium at room temperature...
متن کاملA comprehensive review of the oxidative cyclisation of 2’-hydroxychalcones to aurones and flavones
The oxidative cyclisation reactions of 2’-hydroxychalcones to corresponding aurones and flavones are discussed. While Hg2+, Cu2+ and Tl3+-mediated oxidative cyclisation of 2’-hydroxychalcones selectively give aurones, I2, Se4+, In3+, Cu+ and Fe3+-mediated reactions preferable give flavones. The general mechanisms of these oxidative cyclisation reactions are proposed.
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ژورنال
عنوان ژورنال: Journal of the Serbian Chemical Society
سال: 2013
ISSN: 0352-5139,1820-7421
DOI: 10.2298/jsc120901119k