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Novel Route for Synthesis of Thiozolidine-2,4-dione Derivatives as a Mannich Base

International Journal of Organic Chemistry 2017年第3期7卷 269-283页

作者： Ramakrishna Vellalacheruvu Ramayanam Sai Leela L. K. Ravindranath Department of Chemistry Sri Krishnadevaraya University Anantapur India

The Mannich base of Thiozolidine-2,4-dione derivatives has come to lime light due to their various pharmacological activities. Thiazolidine-2,4-dione is an extensively explored heterocyclic nucleus for designing of novel agents implicated for a wide variety of pathophysiological conditions, that is, diabetes, diabetic complications, cancer, arthritis, inflammation, microbial infection, and melanoma. In present work, synthesis quinoline attached imidazoline derivative using (3 + 2) cyclo-addition via imine of quinoline and TosMIC. These derivatives were converted to Mannich bases of thiozolidine-2,4-dione using Knoevenagel condensation. The sulfonamide analogues of thiozolidine-2,4-dione were also synthesized and characterized by using alkylation conditions.

关键词： Imidazole Analogues Thiozolidine-2 4-dione Nucleus Toluenesulfonylmethyl Isocyanide Combi-Flash Column Chromatography

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A rapid and efficient method for the synthesis of 14H-dibenzo[α.j]xanthenes,aryl-5H-dibenzo[b.i]xanthene-5,7,12,14-(13H)-tetraone and 1,8-dioxooctahydroxanthenes by acidic ionic liquid

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Chinese Chemical Letters 2010年第7期21卷 761-764页

作者： Abbas Rahmati Department of Chemistry University of IsfahanP.O.Box 81746-7344IsfahanIran

Various xanthenes have been synthesized by the condensation ofβ-naphthol,2-hydroxynaphthalene-1,4-dione or dimedone with various aldehydes in the presence of trifluoroacetic acid as catalyst in 1,1,3,3-N,N,N′,N′-te... 详细信息

关键词： Ionic liquid 14H-Dibenzo[α.j]xanthenes β-Naphthol 2-Hydroxynaphthalene-1 4-dione Dimedone

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Synthesis of Quinoxalinophenazine Derivatives and Reaction of 3,12-Dimethylbenzo[a]quinoxalino-[2,3-c]phenazine with Mercury(Ⅱ) Bromide: Spectral and Structural Characterization

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Chinese Journal of Structural Chemistry 2014年第10期33卷 1460-1466页

作者： Ahmad Poursattar Marjani Bayram Parsa Habashi Hojjatollah Rahchamani Jabbar Khalafy Alireza Dadrass Hooman Yaghoobnejad Asl Department of Chemistry Faculty of Science Urmia University Department of Chemistry Missouri University of Science and TechnologyRolla MO 65409 USA

A new series of quinoxalinophenazine derivatives were synthesized in good yields by the reaction of 2,3-dibromonaphthalene-1,4-dione with different aryl-1,2-diamines in DMF as solvent at 120-130℃ or under reflux conditions. 3,12-dimethylbenzo[a]quinoxalino[2,3-c] phenazine with bidentate character reacts with mercury（II） bromide to give suitable crystals. All products were confirmed by IR, ^1H and ^13C NMR, and the metal complex by single-crystal X-ray method. The crystal（C24H16Br2HgN4, Mr = 720.82） belongs to the triclinic system, space group P1 with a = 10.186（6）, b = 10.421（6）, c = 11.470（7） A, α = 98.670（7）, β = 95.069（7）, γ = 109.831（7）°, V = 1119.4（12） A3, Z = 2, Dc = 2.139 Mg/m^3, μ = 10.46 mm^-1, F（000） = 676, R = 0.043 and wR = 0.115 for 3982 observed reflections with I 〉 2σ（I）.

关键词： aryl-1 2-diamines 2 3-dibromonaphthalene-1 4-dione mercury complexes quinoxalinophenazine derivatives N N-chelating

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DABCO Promoted an Efficient and Convenient Synthesis of Pyrrole in Aqueous Medium

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International Journal of Organic Chemistry 2012年第2期2卷 159-165页

作者： Harshadas Mitaram Meshram Vikas Madhukar Bangade Bandi Chennakesava Reddy Gudimella Santosh Kumar Pramod Bhagwan Thakur Discovery Laboratory Organic Chemistry Division—I Indian Institute of Chemical Technology Hyderabad India

The synthesis of C-substituted and N-substituted pyrrole is described by the reaction of phenacyl bromides, pentane-2, 4-dione and amine in aqueous medium using DABCO as a catalyst. The method is very convenient and applicable for alkyl as well as aryl amines and phenacyl bromides. The procedure is amenable for the synthesis of new substituted pyrroles. Moreover, aqueous medium makes the method more eco-friendly.

关键词： Phenacyl Bromide Pentane-2 4-dione Amines DABCO Water Pyrroles

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