Results 51 to 60 of about 326 (161)

Phosphomolybdic acid (PMA)-SiO₂ as a heterogeneous solid acid catalyst for the one-pot synthesis of 2H-indazolo [1, 2-b] phthalazine-triones

, 2010
Phosphomolybdic acid (PMA)-SiO2 was found to be an efficient catalyst for the three-component condensation reaction of phthalhydrazide, 1,3-diketone, and aldehydes to produce 2H-indazolo[1,2-b]phthalazine-triones in excellent yields.
Yadav, Jhillu Singh, Srinivas, Chitti, Sabitha, Gowravaram, Raghavendar, Avula   +3 more
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Review on Multi-component Synthesis of Biologically Important 2H-indazolo[2,1-b]phthalazine-triones derivatives(2017-2021)

, 2023
The present review article focussed on multi-component approach for the synthesis of phthalazine-triones derivatives involves summarized study of one-pot three-component reaction of dimedone, substituted aromatic aldehyde and phthalhydrazide which ...
Hrishikesh Nirmal, Anil Gadhave, Dilip Aute, Vitisha Vikhe, Vaishali Murade   +4 more
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A convenient catalytic synthesis of 2H-indazolo[2,1-b]phthalazine-triones on reusable silica supported Preyssler heteropolyacid [PDF]

, 2013
Efficient synthesis of 2H-indazolo[2,1-b]phthalazine-1,6,11(13H)-trione derivatives was achieved by one-pot threecomponent condensation reaction of phthalhydrazide, dimedone, and aromatic aldehydes under solvent-free conditions.

core  

Microwave-Assisted Chemistry: New Synthetic Application for the Rapid Construction of 1H-Pyrazolo[1,2-b]Phthalazine-5,10-Dione Derivatives in Diisopropyl Ethyl Ammonium Acetate

, 2022
In the frame of research that examines the use of task-specific ionic liquids (ILs) for developing green methodologies toward bioactive substituted 1H-pyrazolo[1,2-b]phthalazine-5,10-diones derivatives via one-pot condensation of aldehydes, malononitrile
Amol S. Nipate (8138601), Asha V. Chate (3393842), Charansingh H. Gill (2863067), Chetan K. Jadhav (11895075), Makrand V. Kulkarni (11895078)   +4 more
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Solvent-free sonochemical one-pot three-component synthesis of 2H-indazolo[2,1-b]phthalazine-1,6,11-triones and 1H-pyrazolo[1,2-b]phthalazine-5,10-diones

, 2011
A rapid and efficient one-pot three-component protocol for the synthesis of 2H-indazolo[2,1-b]phthalazine-1,6,11-triones 4 and 1H-pyrazolo[1,2-b]phthalazine-5,10-diones 6 has been developed by domino coupling of phthalhydrazide, 1,3-diketones, and ...
Verma, Girijesh K., Rajiv K. Verma, Girijesh K. Verma, Shukla, Gaurav, Verma, Rajiv K., Maya Shankar Singh, Gaurav Shukla, Singh, Maya Shankar   +7 more
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DMAP as a new efficient catalyst for the one-pot synthesis of condensed phthalazines

, 2017
A new, convenient, and efficient method for the synthesis of 1H-pyrazolo[1,2-b]phthalazine-5,10-diones is developed starting from phthalhydrazide, aromatic aldehydes, and malononitrile using 4-N,N-dimethylaminopyridin as catalyst.
Esma Lamera, Hocine Merazig, Bouaziz, Zouhair, Aissa Chibani, Sofiane Bouacida, Zouhair Bouaziz, Le Borgne, Marc, Marc Le Borgne, Abdelmalek Bouraiou, Bouraiou, Abdelmalek, Lamera, Esma, Chibani, Aïssa, Merazig, Hocine, Bouacida, Sofiane   +13 more
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Challenges Relating to the Quantification of Ferryl(IV) Ion and Hydroxyl Radical Generation Rates Using Methyl Phenyl Sulfoxide (PMSO), Phthalhydrazide, and Benzoic Acid as Probe Compounds in the Homogeneous Fenton Reaction

Ferryl ion ([FeIVO]2+) has often been suggested to play a role in iron-based advanced oxidation processes (AOPs) with its presence commonly determined using the unique oxidation pathway from methyl phenyl sulfoxide (PMSO) to methyl phenyl sulfone (PMSO2).
Christopher J. Miller (106133), Jieli Xie (14544514), T. David Waite (1313403), Yufan Chen (679519)   +3 more
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Pharmacological aspects of hydrazides and hydrazide derivatives [PDF]

, 2017
Intense search for new antimicrobials, including anti-tuberculosis drugs, is dictated by the phenomenon of bacterial multidrug resistance. Hydrazides are considered the key intermediate and valuable starting material for some novel biologically active ...
Musa T. Abidov, Abidov, Musa
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]phthalazine‐trione derivatives: Inhibition on some metabolic enzymes and molecular docking studies

, 2020
In this study, substituted 2H-indazolo[2,1-b]phthalazine-1,6,11-trione compounds (4a-d) obtained via one-pot three-component condensation reaction of aromatic aldehydes, cyclic 1,3-dione, and phthalhydrazide in ethanol catalyzed by Y(OTf)(3) showed ...
Kadir Turhan, TURGUT, Zühal, Fikret Türkan, Taslimi, Parham, TURHAN, Kadir, Halide Sedef Karaman, Karaman, Halide Sedef, Parham Taslimi, Zuhal Turgut, GÜLÇİN, İlhami, Türkan, Fikret, İlhami Gulcin   +11 more
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Sb(iii)/Gum Arabic composite as a new natural-based environmentally green catalyst for the one-pot pseudo-four-component synthesis of 2H-indazolo[2,1-b] phthalazinetriones. [PDF]

RSC Adv, 2023
Keihanfar M, Mirjalili BBF, Bamoniri A.
europepmc   +1 more source