Výsledky vyhledávání - "Afaf A. H. Abumhdi"

InBr3 catalyzed tandem construction of C–C, C–O and C–N bonds: a concise, convenient and atom-economical strategy for the synthesis of spiro oxazolidine oxindole derivatives

Autor: Ibadur R. Siddiqui, Pragati Rai, Malik A. Waseem, Afaf A. H. Abumhdi, Rahila

Publikováno v: Tetrahedron Letters. 56:4367-4370

A versatile, operationally simple and highly efficient one-pot three-component approach for the synthesis of spiro oxazolidine oxindole derivatives has been developed by the domino reaction of isatins, arylacetylenes, and N -tosyl aldimines in aceton

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a8a7765152b86495447168535531140d
https://doi.org/10.1016/j.tetlet.2015.05.088

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Microwave accelerated facile and efficient synthesis of piperido[3′,4′:5,6]pyrano[2,3-d] pyrimidinones catalyzed by basic ionic liquid [BMIM]OH

Autor: Anushree Srivastava, Anjali Srivastava, Afaf A. H. Abumhdi, Rahila, Arjita Srivastava, Ibadur R. Siddiqui, Shayna Shamim, Malik A. Waseem, Shireen, Pragati Rai

Publikováno v: Journal of Molecular Catalysis A: Chemical. 382:126-135

A basic ionic liquid [BMIM]OH could very efficiently catalyze the synthesis of piperido[3′,4′:5,6]pyrano[2,3-d]pyrimidinone derivatives from pyrano[3,2-c]piperidine analogues and carbonyl compounds. [BMIM]OH acted as a catalyst as well as the rea

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::04722b7a6b082d791f17c351b3aff1f4
https://doi.org/10.1016/j.molcata.2013.10.026

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An InBr3 catalyzed one-pot three-component synthesis of functionalized spirodihydrofuran oxindoles via intramolecular alkyne carbonyl metathesis

Autor: Ibadur R. Siddiqui, Pragati Rai, Afaf A. H. Abumhdi, Rahila, Malik A. Waseem, Shayna Shamim, Shireen

Publikováno v: Tetrahedron Letters. 54:6991-6994

A new and convenient one-pot methodology for the reaction of N-methyl isatin, alkynes and phenacyl bromides to selectively afford spiro dihydrofuran oxindole derivatives catalyzed by indium bromide under ambient temperature conditions has been docume

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::37eb43db6c2c9376ad281fa614164dd7
https://doi.org/10.1016/j.tetlet.2013.09.122

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Basic ionic liquid promoted heterocyclization to access fused imidazopyridines

Autor: Arjita Srivastava, Shayna Shamim, Shireen, Afaf A. H. Abumhdi, Malik A. Waseem, Ibadur R. Siddiqui, Anjali Srivastava

Publikováno v: Tetrahedron Letters. 54:5083-5086

A single step access to fused imidazopyridine involving [bmIm]OH promoted click cyclocondensation of N -methylisatin with 2-aminopyridine has been achieved. The title heterocyclic scaffolds were obtained in excellent yield with high purity. [bmIm]OH

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0fc7c65fad99beca81c928618a941499
https://doi.org/10.1016/j.tetlet.2013.07.054

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Ionic-liquid-promoted Four-component One-pot Synthesis of Highly Functionalized Benzimidazo[2,1-b][1,3]thiazines: Facile Construction ofN-fused Heterocycles

Autor: Afaf A. H. Abumhdi, Rahila, Ibadur R. Siddiqui, Arjita Srivastava, Anushree Srivastava, Pragati Rai, Shayna Shamim, Anjali Srivastava, RK Singh, Shireen, Malik A. Waseem

Publikováno v: Asian Journal of Organic Chemistry. 2:519-524

A one-pot, four-component, efficient, and facile synthesis of highly functionalized benzimidazo[2,1-b][1,3]thiazines promoted by ionic liquid ([bmim]Br)/Et3N has been developed. The protocol involves nucleophilic addition of o-phenylenediamine to car

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::12c46e082c95a401f037bec655309b95
https://doi.org/10.1002/ajoc.201300049

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ChemInform Abstract: Basic Ionic Liquid Promoted Heterocyclization to Access Fused Imidazopyridines

Autor: Shireen Shireen, Shayna Shamim, Afaf A. H. Abumhdi, Arjita Srivastava, Malik A. Waseem, Ibadur R. Siddiqui, Anjali Srivastava

Publikováno v: ChemInform. 45

It is demonstrated that [bmim]OH efficiently catalyzes the cyclocondensation reaction of N-methylisatin with 2-aminopyridines to afford fused imidazopyridines.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ac000e5acdf4c8ee01ae95a2eb8ffcde
https://doi.org/10.1002/chin.201401186

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[bmim]OH promoted hydroalkynylation of nitrile and intramolecular hydroamination of the carbon–carbon multiple bond: an efficient and eco-compatible strategy for the synthesis of indolizinones

Autor: Anjali Srivastava, Ibadur R. Siddiqui, Malik A. Waseem, Shayna Shamim, Arjita Srivastava, Shireen, Afaf A. H. Abumhdi, Rahila

Publikováno v: RSC Advances. 3:10173

An efficient and novel hydroalkynylation of 2-cyanopyridine with arylacetylene and a subsequent intramolecular hydroamination promoted by a basic ionic-liquid, [bmim]OH, under microwave activation in the absence of an organic solvent and an inorganic

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5cfd537f5fa03412ea0c77adb49cd847
https://doi.org/10.1039/c3ra41212a

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Ionic liquid promoted spiroannulation via hetero-Michael addition and intramolecular heterocyclisation

Autor: Ibadur R. Siddiqui, Arjita Srivastava, Shayna Shamim, Shireen, Anjali Srivastava, Malik A. Waseem, Afaf A. H. Abumhdi, Rahila

Publikováno v: New Journal of Chemistry. 37:1258

A sequential efficient method for the synthesis of novel spiro-5-thiazolidin-2-one-indolo[1,5]benzothiazepine from readily available isatin, 4-thioxothiazolidin-2-one and 2-aminothiophenol is reported. The synthesis involves formation of N-methyl-3-(

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::62ce3d171358f9bc9dba01b8a466e20c
https://doi.org/10.1039/c3nj41070f

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