70038-76-5Relevant academic research and scientific papers
Br?nsted acid hydrotrope combined catalysis in water: a green approach for the synthesis of indoloquinoxalines and bis-tetronic acids
Kumbhar, Arjun,Kanase, Dhanaji,Mohite, Suhas,Salunkhe, Rajshri,Lohar, Trushant
, p. 2263 - 2278 (2021/03/31)
The present work describes the applications of Br?nsted acid hydrotrope combined catalyst (BAHC) as a mild, efficient and reusable catalyst for synthesis of indoloquinoxalines and bis-tetronic acids in water. Using BAHC, we synthesized many indoloquinoxal
Synthesis of New 2-(6H-Indolo[2,3-b]quinoxalin-6-yl)-1-phenylethane-1-ones
Grekhneva, E. V.,Kudryavcev, T. A.,Kudryavtseva, T. N.,Lamanov, A. Y.,Melnichenko, V. E.
, p. 2114 - 2117 (2021/11/13)
Abstract: A series of new 2-(6H-indolo[2,3-b]quinoxalin-6-yl)-1-phenylethan-1-ones was synthesized by the reaction of various 6H-indolo[2,3-b]quinoxalines with 4-substituted 2-bromophenylethan-1-ones in a DMSO–K2CO3 system.
An environmentally benign attribute for the expeditious synthesis of quinoxaline and its derivatives
Bhargava, Sangeeta,Soni,Rathore, Deepti
, (2019/08/08)
A simple, efficient, and environmentally friendly ionic liquid mediated protocol for the synthesis of quinoxaline derivatives using carbonyl substrate and phenylenediamines has been described. A range of ionic liquids were synthesized, characterized via IR, 1H and 13C NMR and used as a solvent as well as catalyst for above protocol. The catalytic activities of ILs were evaluated and the relationship between the catalytic activity and acidity was discussed. It was also found that among the all ILs, [Bmim]CF3SO3 was the most effective, eco-friendly and less expensive solvent and catalyst for the above etiquette. This method is of significant value due to the eco-friendly nature of ionic liquid and non usage of separate catalyst to drive the reaction forward. The protocol proves to be efficient and environmentally benign in terms of good to excellent yields, low reaction times, simple work-up, ease of recovery, and reusability of ionic liquid for six times.
β-cyclodextrin mediated synthesis of indole derivatives: reactions of isatins with 2-amino(or 2-thiole)anilines by supramolecular catalysis in water
Shivhare, Km Neha,Siddiqui
, p. 52 - 61 (2018/10/24)
An elegant, mild, and straightforward strategy for the synthesis of indole derivatives have been accomplished by the biomimetic catalysis for the first time in water under neutral conditions. This supramolecular catalyst oriented methodology provides a sustainable and green protocol for the synthesis of 6H-indolo[2,3-b]quinoxalines and 3H-spiro[benzo[d]thiazole-2,3’-indolin]-2’-one by the reaction of isatin derivatives with 1,2-difunctionalized benzene using β-cyclodextrin (β-CD) as a recoverable and reusable supramolecular catalyst.
Cu doped CdS nanoparticles: A versatile and recoverable catalyst for chemoselective synthesis of indolo[2,3-b]quinoxaline derivatives under microwave irradiation
Dandia, Anshu,Parewa, Vijay,Maheshwari, Shuchi,Rathore, Kuldeep S.
, p. 244 - 252 (2014/08/18)
CdS and Cu doped CdS NPs has been obtained successfully using safe agents through a simple aqueous chemical method and characterized by XRD, TEM, SEM, EDAX, UV/VIS and ICP-AES. These investigations revealed that the particle size of the synthesized materi
Sulfamic acid: A mild, efficient, and cost-effective catalyst for synthesis of indoloquinoxalines at ambient temperature
Hegade, Pravin G.,Mane, Mansing M.,Patil, Jayavant D.,Pore, Dattaprasad M.
supporting information, p. 3384 - 3391 (2014/12/11)
A simple, cost-effective method for synthesis of indoloquinoxalines from isatin and o-phenylenediamine employing a catalytic amount of sulfamic acid at ambient temperature is reported. Moreover, the method is applicable for a variety of isatins, ninhydrin, 4-hydroxynaphthaquinone, and 1,2-diketones. The key features of the protocol include rapid reactions with good yields, simple workup procedure, and easy isolation of products.
