Results 1 to 10 of about 3,209 (116)

Enantiodifferentiation of α-Arylacetic Acid and Thiohydantoin Derivatives by NMR Using Thiourea-Based Chiral Solvating Agents [PDF]

open access: yesMolecules
Two thiourea-based chiral solvating agents (CSAs), S-1 and S-2, were evaluated for the enantiomeric discrimination of representative α-arylacetic acids by 1H NMR spectroscopy in the presence of DMAP. Enantiomeric discrimination was assessed by monitoring
Sule Erol Gunal
doaj   +2 more sources

Chiral Thioureas—Preparation and Significance in Asymmetric Synthesis and Medicinal Chemistry

open access: yesMolecules, 2020
For almost 20 years, thioureas have been experiencing a renaissance of interest with the emerged development of asymmetric organocatalysts. Due to their relatively high acidity and strong hydrogen bond donor capability, they differ significantly from ...
Dominika Iwan   +2 more
exaly   +3 more sources

Water-Soluble Inclusion Complexation of Naphthyl-Containing Thiosemicarbazides and Thioureas with β-Cyclodextrin [PDF]

open access: yesMolecules
The paper presents the synthesis of new naphthyl-containing derivatives of thiosemicarbazide and thiourea, their water-soluble inclusion complexes with β-cyclodextrin, as well as an assessment of their potential antiviral and hemorheological activity. As
Oralgazy A. Nurkenov   +9 more
doaj   +2 more sources

Mechanochemical synthesis of thioureas, ureas and guanidines

open access: yesBeilstein Journal of Organic Chemistry, 2017
In this review, the recent progress in the synthesis of ureas, thioureas and guanidines by solid-state mechanochemical ball milling is highlighted. While the literature is abundant on their preparation in conventional solution environment, it was not ...
Vjekoslav Štrukil
exaly   +2 more sources

Crystal structures of three N,N,N′-trisubstituted thioureas for reactivity-controlled nanocrystal synthesis

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2022
The synthesis and single-crystal X-ray structures of three N,N,N′-trisubstituted thioureas are reported, namely N,N,N′-tribenzylthiourea, C22H22N2S (1), N-methyl-N,N′-diphenylthiourea, C14H14N2S (2), and N,N-di-n-butyl-N′-phenylthiourea, C15H24N2S (3 ...
Evert Dhaene   +3 more
doaj   +1 more source

Synthesis and Characterization of Thiazole Compounds in the Presence of Various Reagents, Catalysts and Solvents

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2022
The reaction medium plays a key role in organic synthesis and pharmaceutical research. There are many opinions on choosing the best condition, including cost and environmental implications, but the main requirement is that they have the necessary ...
Nurcan Berber
doaj   +1 more source

Thiourea Organocatalysts as Emerging Chiral Pollutants: En Route to Porphyrin-Based (Chir)Optical Sensing

open access: yesChemosensors, 2021
Environmental pollution with chiral organic compounds is an emerging problem requiring innovative sensing methods. Amino-functionalized thioureas, such as 2-(dimethylamino)cyclohexyl-(3,5-bis(trifluoromethyl)phenyl)thiourea (Takemoto’s catalyst), are ...
Nele Konrad   +13 more
doaj   +1 more source

Synthesis and Identification of New N,N-Disubstituted Thiourea, and Thiazolidinone Scaffolds Based on Quinolone Moiety as Urease Inhibitor

open access: yesMolecules, 2022
Synthesis of thiazolidinone based on quinolone moiety was established starting from 4-hydroxyquinol-2-ones. The strategy started with the reaction of ethyl bromoacetate with 4-hydroxyquinoline to give the corresponding ethyl oxoquinolinyl acetates, which
Yaseen A. M. M. Elshaier   +6 more
doaj   +1 more source

Experimental and Theoretical Evaluation of Asymmetric Thioureas on the Corrosion of Carbon Steel in Acidic Medium

open access: yesInternational Journal of Electrochemical Science, 2017
The inhibitory effects of N-(p-X-phenyl)-N’-benzyl-thiourea (THIOB1 and THIOB2) and N-(p-X-phenyl)-N’-phenethyl-thiourea (THIOF1 and THIOF2) on the corrosion of AISI 1020 carbon steel in 1 mol L-1 HCl were evaluated by polarization curves (PP), Linear ...
Arthur Valbon   +2 more
doaj   +1 more source

Synthesis and Characterization of Multicolor Luminescent and Thermally Stable Thioureas and Polythioamides

open access: yesActa Chimica Slovenica, 2023
Two new polythioamides were prepared through the polycondensation reaction between thiourea monomers and terephthaloyl dichloride, while the thiourea monomers were synthesized by the interaction of aromatic (4,4’-diaminophenylsulfone) or alicyclic (1,2 ...
Farah Qureshi   +3 more
doaj   +1 more source

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