337513-52-7Relevant academic research and scientific papers
Black yet green: A?heterogenous carbon-based acid catalyst for the synthesis of biscyclic derivatives under eco-friendly conditions
Agarwal, Shikha,Sethiya, Ayushi,Teli, Pankaj
, (2021/12/09)
In this study, a simple, cost-efficient and green protocol has been described for the synthesis of biscoumarin and bisdimedone derivatives via one-pot Knoevenagel–Michael reaction of aromatic aldehydes with 4-hydroxycoumarin and dimedone, respectively. Th
1,8-Diazabicyclo [5.4.0] undec-7-ene functionalized cellulose nanofibers as an efficient and reusable nanocatalyst for the synthesis of tetraketones in aqueous medium
Lasemi, Zahra,Tajbakhsh, Mahmood,Alinezhad, Heshmatoallah,Mehrparvar, Forough
, p. 3667 - 3682 (2020/05/13)
Abstract: 1,8-Diazabicyclo [5.4.0] undec-7-ene functionalized cellulose nanofibers (CNF@DBU[Cl]) were simply prepared and characterized by analytical techniques. Scanning electron microscope confirmed that CNF@DBU[Cl] was formed with average size of 30–60?nm. X-ray diffraction of CNF@DBU[Cl] showed that the crystalline structure of the cellulose nanofibers was remained unchanged after functionalization. According to elemental analyses and thermal gravimetric analysis, the loading amount of organic group on cellulose nanofibers was found to be 1.46?mmol/g. The catalytic activity of DBU functionalized cellulose nanofibers was studied for the synthesis of biologically important tetraketone derivatives in the reaction of aldehydes with 1,3-dicarbonyl compounds. In the presence of CNF@DBU[Cl], the corresponding tetraketones were obtained in 80–96% yields under very mild reaction conditions. The catalyst was recovered and reused four successive runs without significant loss of catalytic activity. This method showed several significant advantages including short reaction times, high yields of products, use of various substrates, convenient work-up, no necessity of extraction or chromatographic purification steps, environmentally friendly conditions and lack of use of any harmful solvent. Graphic abstract: [Figure not available: see fulltext.].
Selective synthesis of spiro and dispiro compounds using Mn(III)-based oxidation of tetracarbonyl compounds
Hisano, Kazuki,Nishikawa, Satomi,Nishino, Hiroshi,Shibuya, Keisuke,Yokote, Suzuka
supporting information, (2020/04/21)
The Mn(III)-based oxidation of methylenebis(cyclohexanedione)s and methylenebis(piperidinedione)s as a tetracarbonyl compound was investigated under various conditions, selectively producing spiro dihydrofurans and dispiro cyclopropanes depending on the solvent. The mechanism for the formation of the spiro dihydrofurans and dispiro cyclopropanes was discussed. In addition, a simple synthesis of a new type of alkaloid, 3,4,6,7,8,10-hexahydro-1H-pyrano[3,2-c:5,6-c’]dipyridine-1,9(2H)-diones, was demonstrated.
An efficient synthesis of 2,2'-arylmethylene bis(3-hydroxy-5,5-dimethyl-2-cyclohexene-1-one) derivatives using Baker's yeast**
Ashtarian, Jahanbakhsh,Heydari, Reza,Maghsoodlou, Malek-Taher,Yazdani-Elah-Abadi, Afshin
, p. 259 - 263 (2019/07/31)
A simple and efficient method was developed for the synthesis of 2,2'-arylmethylene dicyclohexane-1,3-dione derivatives via the Knoevenagel–Michael cascade reactions of aromatic aldehydes and 5,5-dimethyl-1,3-cyclohexanedione catalyzed by Saccharomyces ce
Introduction of taurine (2-aminoethanesulfonic acid) as a green bio-organic catalyst for the promotion of organic reactions under green conditions
Shirini, Farhad,Daneshvar, Nader
, p. 110190 - 110205 (2016/11/30)
Taurine (2-aminoethanesulfonic acid), a semi-essential amino acid that exists in the human body and numerous other living creatures, is used as a green bio-organic catalyst for the promotion of the Knoevenagel reaction between aldehydes and malononitrile. In the same way, tetraketones can also be produced through a Knoevenagel reaction, followed by Michael addition. 2-Amino-3-cyano-4H-pyran derivatives are simply prepared via a three-component reaction in the presence of taurine as the catalyst. All these reactions are performed in water, a green solvent. The advantages of using of taurine as the catalyst are it is environmentally friendly, low cost, commercially available, easy to separate from the reaction mixture, and has high reusability. Use of this catalyst results in acceptable reaction times, high yields and high purities of the obtained products without utilizing any organic solvents.
Method for catalytically synthesizing xanthenedione compound open ring derivatives through hydroxyl ammonium ionic liquid
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Paragraph 0022; 0023, (2017/02/02)
The invention discloses a method for catalytically synthesizing xanthenedione compound open ring derivatives through hydroxyl ammonium ionic liquid, and belongs to the technical field of green synthesis of fine chemicals. According to the technical scheme
Revisiting the three component synthesis of isoxazolo[5,4-b]pyridines, 4-aryl-3,7,7-trimethyl-isoxazolo[5,4-b]quinolin-5(6H)-ones and related heterocycles
Lingham, Anthony R.,Hawley, John A.,Greaves, Tamar,Jackson, Neale,Antolasic, Frank,Hügel, Helmut M.
supporting information, p. 175 - 179 (2016/12/03)
The one-step three-component microwave assisted synthesis between aromatic aldehydes with tetronic acid or indan-1,3-dione readily formed the Knoevenagel adducts that underwent addition of 3-methylisoxazol-5-amine 1 to form the isoxazolo[5,4-b]pyridine pr
Biotransformation of Active Methylene Compounds by Saccharomyces cerevisiae
Ghasemi, Sabrieh,Habibi, Zohreh,Notash, Behrouz
, p. 856 - 860 (2015/12/26)
The biotransformation of several activated CH-acid compounds was examined using Saccharomyces cerevisiae as a biocatalyst. Alkylation-hydroxylation of 1,3-dicarbonyl compounds at the α-position was achieved. Investigation of the reaction of these compound
