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Showing 1 to 12 of 343 entries
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Synthesis of some new 1, 2, 4-triazoles starting from isonicotinic acid hydrazide and evaluation of their antimicrobial activities

evaluation

Bayrak H, Demirbas A, Demirbas N.
GSID: JDTlwllibDMJ
H Bayrak, A Demirbas, N Demirbas… - European journal of …, 2009 - Elsevier

5-Pyridin-4-yl-1,3,4-oxadiazole-2-thiol (2) was obtained from the reaction of isonicotinic acid hydrazide with carbon disulfide in basic media and converted into 4-amino-5-pyridin-4-yl-4H-1,2,4-triazole-3-thiol (5) by the treatment with hydrazine hydrate. The synthesis of 3 and 6 …

Diversity-oriented catalyst-free synthesis of pseudopeptides containing rhodanine scaffolds via a one-pot sequential isocyanide-based six-component reactions in water using ultrasound irradiation.

Ultrasonics sonochemistry

Shaabani A, Hooshmand SE.
PMID: 28946494
Ultrason Sonochem. 2018 Jan;40:84-90. doi: 10.1016/j.ultsonch.2017.06.030. Epub 2017 Jun 30.

A planning strategy for diversity-oriented catalyst-free synthesis of pseudopeptides containing rhodanine scaffolds has been developed via a novel one-pot sequential six-component reaction in water. This approach is an efficient, environmentally friendly and expeditious procedure for direct access to wide...

Atom economical synthesis of di- and trithiocarbonates by the lithium tert-butoxide catalyzed addition of carbon disulfide to epoxides and thiiranes.

Organic & biomolecular chemistry

Diebler J, Spannenberg A, Werner T.
PMID: 27339808
Org Biomol Chem. 2016 Aug 21;14(31):7480-9. doi: 10.1039/c6ob01081d. Epub 2016 Jun 24.

Alkali metal alkoxides were studied as catalysts for the addition of CS2 to epoxides. A screening of several commercially available alkoxides revealed lithium tert-butoxide as an active and selective catalyst for this reaction. The influence of different reaction parameters...

Nonlinear polarization instability in cubic-quintic plasmonic nanocomposites.

Optics express

Reyna AS, Bergmann E, Brevet PF, de Araújo CB.
PMID: 29041514
Opt Express. 2017 Sep 04;25(18):21049-21067. doi: 10.1364/OE.25.021049.

We report a study of the nonlinear birefringence induced in a metal-dielectric nanocomposite due to the contributions of third- and fifth-order optical nonlinearities. A theoretical model describing the evolution of the light polarization state of a confined laser beam...

Carbon disulfide exposure estimate and prevalence of chronic diseases after carbon disulfide poisoning-related occupational diseases.

Annals of occupational and environmental medicine

Chung H, Youn K, Kim K, Park K.
PMID: 29093821
Ann Occup Environ Med. 2017 Oct 26;29:52. doi: 10.1186/s40557-017-0208-6. eCollection 2017.

BACKGROUND: In Korea, Carbon disulfide (CSMETHODS: We interviewed 633 ex-workers identified as CSRESULTS: The cumulative exposure index was 128.2 ppm on average. Workers from the spinning, electrical equipment repair, and motor repair departments were exposed to high concentrations of...

Synthesis, urease inhibition, antioxidant, antibacterial, and molecular docking studies of 1,3,4-oxadiazole derivatives.

ISRN pharmacology

Hanif M, Shoaib K, Saleem M, Hasan Rama N, Zaib S, Iqbal J.
PMID: 22934191
ISRN Pharmacol. 2012;2012:928901. doi: 10.5402/2012/928901. Epub 2012 Aug 13.

A series of eighteen 1,3,4-oxadiazole derivatives have been synthesized by treating aromatic acid hydrazides with carbon disulfide in ethanolic potassium hydroxide yielding potassium salts of 1,3,4-oxadiazoles. Upon neutralization with 1 N hydrochloric acid yielded crude crystals of 1,3,4-oxadiazoles, which...

High precision measurements of carbon disulfide negative ion mobility and diffusion.

The Review of scientific instruments

Snowden-Ifft DP, Gauvreau JL.
PMID: 23742542
Rev Sci Instrum. 2013 May;84(5):053304. doi: 10.1063/1.4803004.

High precision measurements were made of reduced mobility, lateral and longitudinal diffusion of CS2(-) ions in 40 Torr CS2 and a 30-10 Torr CS2-CF4 gas mixture. The reduced mobility was found to be 0.4645 ± 0.0006 cm(2) atm/s V...

Carbon Disulfide (CS2) Interference in Glucose Metabolism from Unconventional Oil and Gas Extraction and Processing Emissions.

Environmental health insights

Rich AL, Patel JT, Al-Angari SS.
PMID: 27042092
Environ Health Insights. 2016 Mar 28;10:51-7. doi: 10.4137/EHI.S31906. eCollection 2016.

Carbon disulfide (CS2) has been historically associated with the manufacturing of rayon, cellophane, and carbon tetrachloride production. This study is one of the first to identify elevated atmospheric levels of CS2 above national background levels and its mechanisms to...

Reaction-Driven Self-Assembled Micellar Nanoprobes for Ratiometric Fluorescence Detection of CS2 with High Selectivity and Sensitivity.

ACS applied materials & interfaces

Lu W, Xiao P, Liu Z, Gu J, Zhang J, Huang Y, Huang Q, Chen T.
PMID: 27419849
ACS Appl Mater Interfaces. 2016 Aug 10;8(31):20100-9. doi: 10.1021/acsami.6b06472. Epub 2016 Jul 26.

The detection of highly toxic CS2, which is known as a notorious occupational hazard in various industrial processes, is important from both environmental and public safety perspectives. We describe here a robust type of chemical-reaction-based supramolecular fluorescent nanoprobes for...

Synthesis and Antimicrobial Activity of 6-Thioxo-6,7-dihydro-2H-[1,2,4]triazino[2,3-c]-quinazolin-2-one Derivatives.

Scientia pharmaceutica

Nosulenko IS, Voskoboynik OY, Berest GG, Safronyuk SL, Kovalenko SI, Kamyshnyi OM, Polishchuk NM, Sinyak RS, Katsev AV.
PMID: 25853063
Sci Pharm. 2014 Mar 24;82(3):483-500. doi: 10.3797/scipharm.1402-10. Print 2014.

Potassium 8-R(1)-9-R(2)-10-R(3)-3-R-2-oxo-2H-[1,2,4]triazino[2,3-c]quinazoline-6-thiolates 2.1-2.26 were synthesized via cyclocondensation of 6-R-3-(3-R(1)-4-R(2)-5-R(3)-aminophenyl)-1,2,4-triazin-5-ones 1.1-1.26 with carbon disulfide, potassium hydroxide, and ethanol or with potassium O-ethyl dithiocarbonate in 2-propanol. The corresponding thiones 3.1-3.26 were obtained by treatment of 2.1-2.26 with hydrochloric acid. It was...

Determination of VOSCs in sewer headspace air using TD-GC-SCD.

Talanta

Wang B, Sivret EC, Parcsi G, Stuetz RM.
PMID: 25770608
Talanta. 2015 May;137:71-9. doi: 10.1016/j.talanta.2014.11.072. Epub 2015 Jan 22.

The management of odorous emissions from sewer networks has become an important issue for sewer operators resulting in the need to better understand the composition of volatile organic sulfur compounds (VOSCs). In order to characterise the composition of such...

Understanding chemical reactions of CO2 and its isoelectronic molecules with 1-butyl-3-methylimidazolium acetate by changing the nature of the cation: the case of CS2 in 1-butyl-1-methylpyrrolidinium acetate studied by NMR spectroscopy and density functional theory calculations.

The Journal of chemical physics

Cabaço MI, Besnard M, Chávez FV, Pinaud N, Sebastião PJ, Coutinho JA, Danten Y.
PMID: 24985638
J Chem Phys. 2014 Jun 28;140(24):244307. doi: 10.1063/1.4884820.

NMR spectroscopy ((1)H, (13)C, (15)N) shows that carbon disulfide reacts spontaneously with 1-butyl-1-methylpyrrolidinium acetate ([BmPyrro][Ac]) in the liquid phase. It is found that the acetate anions play an important role in conditioning chemical reactions with CS2 leading, via coupled...

Showing 1 to 12 of 343 entries