Results 31 to 40 of about 24,424,699 (186)

New platinum(II) complexes of cycloalkanespiro-5-(2-thiohydantoins). Synthesis and quantum chemical investigation

Acta Chimica Slovenica, 2015
Synthesis and characterization of new Pt(II) complexes of cyclohexanespiro-5-(2-thiohydantoin)  (L1) and cycloheptanespiro-5-(2-thiohydantoin) (L2) are discussed. The new complexes are studied by elemental analysis, IR, ATR FTIR spectroscopy.
Petja E. Marinova, Marin Marinov, Vassil Delchev, Neyko Stoyanov   +3 more
doaj   +1 more source

ELECTROCHEMICAL INVESTIGATION OF 2-THIOHYDANTOIN DERIVATIVES AS CORROSION INHIBITORS FOR MILD STEEL IN ACIDIC MEDIUM [PDF]

, 2021
Four 2-thiohydantoin derivatives were synthesized and their corrosion inhibition properties on mild steel (MS) in 0.5M HCl solution was evaluated using usual gravimetric and electrochemical methods (weight loss, potentiodynamic polarization ...
Miroslav Pavlović, Nataša Vukićević, Silvana Dimitrijević, Stanić, Petar B., Cvetković, Vesna, Pavlović, Miroslav M., Stanić, Petar, Dimitrijević, Silvana, Cvetković, Vesna S., Petar Stanić, Vukićević, Nataša M., Vesna Cvetković, Šmit, Biljana, Pavlović, Miroslav, Vukićević, Nataša, Biljana Šmit   +15 more
core   +1 more source

Reactions with 2-Thiohydantoin, Synthesis of Imidazothiazolone Derivatives and Mannich Bases of 5-Arylidene-2-thiohydantoin

Zeitschrift für Naturforschung B, 1976
Treatment of 5-arylidene-2-thiohydantoin (1a-d) with alkyl bromoacetate and chloroacetic acid gave the esters 2a-f and the acids 2g-j, respectively. 2a was refluxed with concentrated hydrochloric acid to give 5-benzylidene hydantoin. 2 was cyclized with acetic anhydride to give the bicyclic product 3. 5-Arylidene-2-thiohydantoin derivatives (1a, b) and
A. F. A. Shalaby, H. A. Daboun, M. A. Abdel Aziz   +2 more
openaire   +1 more source

Synthesis and Biological Evaluation of Novel Dispiro-Indolinones with Anticancer Activity

Molecules, 2023
Novel variously substituted thiohydantoin-based dispiro-indolinones were prepared using a regio- and diastereoselective synthetic route from 5-arylidene-2-thiohydantoins, isatines, and sarcosine.
Yan A. Ivanenkov, Maxim E. Kukushkin, Anastasia A. Beloglazkina, Radik R. Shafikov, Alexander A. Barashkin, Andrey A. Ayginin, Marina S. Serebryakova, Alexander G. Majouga, Dmitry A. Skvortsov, Viktor A. Tafeenko, Elena K. Beloglazkina   +10 more
doaj   +1 more source

Reactivity of 2-Thiohydantoins Towards Various Electrophilic Reagents: Applications to the Synthesis of New 2-Ylidene-3,5-dihydro-4H-imidazol-4-ones.

Molecules, 2004
A new route to 5-(imidazolidin-2-ylidene)-2-methylsulfanyl-3,5-dihydro-imidazol-4-ones 4a-c using ketene dithioacetal intermediates 3a-c is described.
Jean Pierre Bazureau, François Carreaux, Jean-René Chérouvrier   +2 more
doaj   +1 more source

IN VITRO STUDIES ON THE ANTIDIABETIC ACTIVITY OF 2-THIOHYDANTOIN USING α-amylase AND α-GLUCOSIDASE [PDF]

, 2019
Objective: The aim of the present study was to investigate the inhibitory effect of 2-thiohydantoin on the enzymes α-amylase and α-glucosidase in vitro as an antidiabetic therapeutic approach to reduce gastrointestinal glucose production.
UMA S, DEVIKA PT
core   +1 more source

Microwave Assisted Synthesis of Novel Functionalized Hydantoin Derivatives and Their Conversion to 5-(Z) Arylidene-4H-imidazoles

Molecules, 2011
2-(Alkyl-1-yl)-1H-imidazol-5(4H)-ones 5a–n were synthesized via nucleophilic substitution of the methylsulfanyl group of the corresponding 2-(methylthio)-1H-imidazol-5(4H)-ones 3a–c with suitably substituted secondary amines.
Edward R. Biehl, Haribabu Ankati, Sukanta Kamila   +2 more
doaj   +1 more source

Effect of Microwave Irradiation on the Condensation of 6-Substituted 3-Formylchromones with Some Five-membered Heterocyclic Compounds

Molecules, 2000
Different types of 3-substituted 4H-4-oxobenzopyrans were prepared by microwave irradiation as well as by a classical method. The beneficial effect of microwave irradiation on the aldol condensation of 3-formylchromones with 2-imino-1-methylimidazolidine-
Nada Pronayova, Tibor Liptay, Dusan Loos, Renata Gasparova, Margita Lacova   +4 more
doaj   +1 more source

Synthesis and characterization of UO22+, ZrO2+ and Th4+ complexes with 3-(p-substituted aryl)-2-thiohydantoin

, 2008
P.G. Department of Chemistry. Sambalpur University. Jyoti Vihar. Burla-768 019. Orissa, India E-maiL : dhruba _ dash@yahoo.co.in Manuscript received 27 December 2007, revised 9 April 2008. accepted 15 April 2008 A few complexes of the type [ML2(H2O)2]
D. C. Dash, S. K. Naik, (Mrs.) P. Naik, A. Mahapatra, R. K. Mohapatra, (Ms.) S. Ghosh   +5 more
core   +1 more source

Chemo- and Regioselective 1,3-Dipolar Cycloaddition of Nitrile Imines to 5-Arylmethylene-2-methylthiohydantoins

Organics
1,3-Dipolar cycloaddition reactions of nitrile imines are a powerful tool for the construction of spirocyclic frameworks, yet controlling chemoselectivity remains challenging when dipolarophiles contain multiple reactive sites.
Maria E. Filkina, Lev A. Lintsov, Victor A. Tafeenko, Maxim E. Kukushkin, Elena K. Beloglazkina   +4 more
doaj   +1 more source