Results 21 to 30 of about 5,910 (205)

NOVEL HETEROCYCLES BASED ON 1, 3, 4-THIADIAZOLE SCAFFOLD AS INSECTICIDES [PDF]

open access: yesJournal of Environmental Science, 2017
The crop plants are the major source of human nutrition, but insects and pests cause huge economic losses every year. The authors were interested in developing novel insecticidal agents with low toxicity and an acceptable impact on the environment. Thus, 2-amino-5-(substituted)-1, 3, 4-thiadiazoles (1a, b) were used as versatile materials to synthesize
Madkour, H. F   +3 more
openaire   +1 more source

2-(4-Fluorophenyl)-3-[5-(4-nitrophenyl)-1,3,4-thiadiazol-2-yl]-1,3-thiazolidin-4-one

open access: yesActa Crystallographica Section E, 2010
In the title compound, C17H11FN4O3S2, the five-membered thiazolidinone and thiadiazole rings are almost planar, with r.m.s. deviations of 0.017 and 0.0019 Å, respectively.
Peng Yu   +4 more
doaj   +1 more source

N-(5-Benzylsulfanyl-1,3,4-thiadiazol-2-yl)-2-(piperidin-1-yl)acetamide

open access: yesActa Crystallographica Section E, 2014
The title compound, C16H20N4OS2, was synthesized by the reaction of 2-benzylsulfanyl-5-chloroacetamido-1,3,4-thiadiazole and piperidine in a 1:2 ratio. The planes of the acetamide and 1,3,4-thiadiazole units are twisted by 10.8 (4)°.
D. S. Ismailova   +4 more
doaj   +1 more source

Synthesis and crystal structure analysis of 2-​(4-​fluorobenzyl)​-​6-​phenylimidazo[2,​1-​b]​- [1,​3,​4]​thiadiazole and its chlorophenyl derivative [PDF]

open access: yes, 2014
Prepns. of 2-​(4-​fluorobenzyl)​-​6-​phenylimidazo[2,​1-​b]​[1,​3,​4]​thiadiazole and its chlorophenyl deriv. were described. Preliminary anal. was done spectroscopically by means of 1H NMR, 13C NMR spectra, mass spectra and elemental analyses. Further
Afshan Banu, .   +3 more
core   +1 more source

Synthesis and Preliminary Antimicrobial Study of 2-Amino-5-Mercapto-1,3,4-Thiadiazole Derivatives

open access: yesIraqi Journal of Pharmaceutical Sciences, 2017
Nitrogen heterocycles are of a special interest because they constitute an important class of natural and non natural products, many of which exhibit useful biological activities.Among these nitrogen heterocycles are 1, 3, 4-thiadiazole containing ...
Husam A. Ameen, Ahlam J. Qasir
doaj   +3 more sources

Synthesis and Regioselective Reaction of Some Unsymmetrical Heterocyclic Chalcone Derivatives and Spiro Heterocyclic Compounds as Antibacterial Agents

open access: yesMolecules, 2015
A number of novel heterocyclic chalcone derivatives can be synthesized by thermal and microwave tools. Treatment of 4-(4-Acetylamino- and/or 4-bromo-phenyl)-4-oxobut-2-enoic acids with hydrogen peroxide in alkaline medium were afforded oxirane ...
Maher A. El-Hashash   +2 more
doaj   +1 more source

Synthesis of new thiophene derivatives and their use as photostabilizers for rigid poly(vinyl chloride) [PDF]

open access: yes, 2015
Five new thiophenes, namely, N-[(3-bromo-2-methylthiophen-5-yl)methylene]-4-methoxyaniline (4a), N-[(3-bromo-2-methylthiophen-5-yl)methylene]-3,4-dimethoxyaniline (4b), N-[(3-bromo-2-methylthiophen-5-yl)methylene]-3,4-dimethylaniline (4c), 3-[(3-bromo-2 ...
Ahmed, Ahmed   +4 more
core   +3 more sources

5-({3-[(5-Amino-1,3,4-thiadiazol-2-yl)sulfanylmethyl]benzyl}sulfanyl)-1,3,4-thiadiazol-2-amine

open access: yesActa Crystallographica Section E, 2012
In the title compound, C12H12N6S4, the two terminal thiadiazole rings are twisted with respect to the central benzene ring, making dihedral angles of 54.28 (4) and 76.56 (3)°.
Sung Kwon Kang   +2 more
doaj   +1 more source

Unusual anti-leukemia activity of nanoformulated naproxen and other non-steroidal anti-inflammatory drugs [PDF]

open access: yes, 2016
The non-steroidal anti-inflammatory drugs (NSAIDs) are the most widely used pharmaceuticals worldwide. Interestingly, many of them have significant anticancer properties too.
Aboul-Fadl   +76 more
core   +1 more source

Synthesis and Antiviral Activity of 5‑(4‑Chlorophenyl)-1,3,4-Thiadiazole Sulfonamides

open access: yesMolecules, 2010
Starting from 4-chlorobenzoic acid, 10 new 5-(4-chlorophenyl)-N-substituted-N-1,3,4-thiadiazole-2-sulfonamide derivatives were synthesized in six-steps. Esterification of 4-chlorobenzoic acid with methanol and subsequent hydrazination, salt formation and
Yuping Zhang   +7 more
doaj   +1 more source

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