scholarly journals 2,4,6-Tris(4-Iodophenyl)-1,3,5-trimethylbenzene

Molbank ◽  
10.3390/m1121 ◽  
2020 ◽  
Vol 2020 (1) ◽  
pp. M1121
Author(s):  
Dana Bejan ◽  
Narcisa Laura Marangoci ◽  
Alexandru Rotaru ◽  
Alexandru Florentin Trandabat ◽  
Lucian Gabriel Bahrin
Keyword(s):  
Mass Spectrometry ◽  
Title Compound ◽  
Tg Analysis

2,4,6-Tris(4-iodophenyl)-1,3,5-trimethylbenzene was synthesized from 2,4,6-triphenyl-1,3,5-trimethylbenzene, using [bis(trifluoroacetoxy)iodo]benzene as the iodinating agent. The title compound was characterized by means of NMR, IR, and mass spectrometry, as well as TG analysis.

scholarly journals 3,5-Bis((E)-4-methoxybenzylidene)-1-(2-morpholinoethyl)piperidin-4-one

Molbank ◽  
10.3390/m1159 ◽  
2020 ◽  
Vol 2020 (4) ◽  
pp. M1159
Author(s):  
Tyas Kuswardani ◽  
Noval Herfindo ◽  
Neni Frimayanti ◽  
Rudi Hendra ◽  
Adel Zamri
Keyword(s):  
Mass Spectrometry ◽  
Inhibitory Activity ◽  
Title Compound ◽  
Chemical Structure ◽  
Ns3 Protease

The 3,5-bis((E)-4-methoxybenzylidene)-1-(2-morpholinoethyl)piperidin-4-one (3) compound was synthesized by a two-step reaction with 92% yield. The chemical structure of compound 3 was confirmed by IR, NMR, and mass spectrometry. The title compound was screened for its anti-dengue activity against DENV2 NS2B-NS3 protease and showed 39.09% inhibitory activity at 200 µg/mL.

Darstellung und Kristallstruktur von [(Me3Si)2CH(i-Pr)InCl]2 / Synthesis and Crystal Structure of [(Me3Si)2CH(i-Pr)InCl]2

1991 ◽  
Vol 46 (11) ◽  
pp. 1539-1543 ◽  
Author(s):  
Bernhard Neumüller
Keyword(s):  
Crystal Structure ◽  
Mass Spectrometry ◽  
Solid State ◽  
Title Compound ◽  
Unit Cell ◽  
Synthesis And Crystal Structure ◽  
Space Group ◽  
Cell Parameters

The title compound 1 has been prepared by the reaction of i-PrInCl2 with LiCH(SiMe3)2 in diethylether at -30 °C. The colorless substance 1 was characterized by NMR, IR, and RE spectroscopy, as well as by mass spectrometry. 1 is dimer in solution and the solid state and crystallizes in the space group P21/c with the cell parameters a = 1206.4(3) pm, b = 905.7(2) pm, c = 1591.2(5) pm, and β = 101.18(2)°. The unit cell contains two centrosymmetrical dimeric molecules.

1.3.5-Triazin-2,4,6-trisulfenyltrichlorid: Synthese, Eigenschaften und Reaktionsverhalten / 1.3.5-Triazine-2,4,6-trisulfenyltrichloride: Synthesis, Properties and Reactions

1999 ◽  
Vol 54 (5) ◽  
pp. 609-616 ◽  
Author(s):  
Robert Tripolt ◽  
Siegfried Schmuck ◽  
Edgar Nachbaur
Keyword(s):  
Mass Spectrometry ◽  
Title Compound ◽  
Experimental Conditions ◽  
Synthesis Properties ◽  
Reaction With Water

Various routes and improved experimental conditions for the synthesis of 1,3,5-triazine-2,4,6- trisulfenyltrichloride are reported and its reaction with water, alcohols, ammonia, and acetone investigated. The formation of the monomeric pseudohalogen halide NCS-C1 by degradation of the title compound under mass-spectrometry conditions has been observed.

Thermal Decomposition of Wood Treated with Silicates by Thermogravimetry–Mass Spectrometry

2011 ◽  
Vol 239-242 ◽  
pp. 459-462
Author(s):  
Hong Qiang Qu ◽  
Wei Hong Wu ◽  
Chun Zheng Wang ◽  
Xin Liu ◽  
Chun Meng Yin
Keyword(s):  
Mass Spectrometry ◽  
Thermal Decomposition ◽  
Weight Loss ◽  
Flame Retardants ◽  
Decomposition Temperature ◽  
Ion Current ◽  
Current Intensity ◽  
Tg Analysis ◽  
Ms Analysis ◽  
Differential Thermogravimetry

The thermal decomposition of wood treated with a series of silicates was characterized by thermogravimetric (TG) analysis, differential thermogravimetry (DTG), and thermogravimetry–mass spectrometry (TG–MS) analysis. The addition of these chemicals caused a decrease in the decomposition temperature, a reduction in weight loss, and an increase in the amount of char produced. The results showed that ion current intensity and ion peak area of the typical representatives of incombustible ion such as m/z = 18 and 44 MS signals were increased by the flame retardants but the inflammable ion such as m/z =12 and 28 MS signals were decreased at the meantime, which indicate that the flame retardants can significantly enhances the dehydration and inhibits the deploymerisation reaction of wood.

Dimeres Di(N-lithium–tert–butylamino)bis(dimethylamino)silan - [Si(N(CH3)2)2(NLiC(CH3)3)2]2 – Darstellung und Kristallstruktur / Dimeric Di(N -lithio-tert-butylamino)bis(dimethylamino)silane - [Si(N(CH3)2)2(NLiC(CH3)3)2]2 – Synthesis und Crystal Structure

2001 ◽  
Vol 56 (1) ◽  
pp. 90-94 ◽  
Author(s):  
Josef Engering ◽  
Eva-Maria Peters ◽  
Martin Jansen
Keyword(s):  
Crystal Structure ◽  
Mass Spectrometry ◽  
Solid State ◽  
Nmr Spectroscopy ◽  
Single Crystal ◽  
Title Compound ◽  
Solution Nmr ◽  
X Ray Diffraction ◽  
X Ray ◽  
Solution Nmr Spectroscopy

Abstract [Si(N(CH3)2)2(NLiC(CH3)3)2]2 results from the reaction of silicon tetrachloride with excess terf-butylamine, followed by halogen substitution with LiN(CH3)2, and treatment with n-butyllithium in hexane. The title compound, found to be dimeric in the solid state, was characterised by single crystal X-ray diffraction (triclinic, Pi , a = 10.208(2), b = 12.140(2), c = 15.658(3) Å , a = 79.02(3), ß = 82.80(3), γ = 67.19(3)°, Z = 2, C24H60Li4N8Si2 ), and by solid state and solution NMR-spectroscopy and mass spectrometry.

scholarly journals 4,4′-(Pyrrolo[3,2-b]pyrrole-1,4-diyl)dianiline

Molbank ◽  
10.3390/m1169 ◽  
2020 ◽  
Vol 2020 (4) ◽  
pp. M1169
Author(s):  
Lorenza Giordano ◽  
Rafael Ballesteros ◽  
Rafael Ballesteros-Garrido
Keyword(s):  
Mass Spectrometry ◽  
Ethylene Glycol ◽  
Title Compound ◽  
Nmr Techniques ◽  
One Step

4,4′-(Pyrrolo[3,2-b]pyrrole-1,4-diyl)dianiline was synthesized in one step from benzene-1,4-diamine and ethylene glycol with Pd/Al2O3 and ZnO. The title compound was characterized by means of NMR techniques and HRMS mass spectrometry.

scholarly journals Methyl (2E)-3-[3-Benzyl-2-(3-methoxy-3-oxoprop-1-yn-1-yl)-2-(1-naphthyl)imidazolidin-1-yl]acrylate

Molbank ◽  
10.3390/m1176 ◽  
2020 ◽  
Vol 2021 (1) ◽  
pp. M1176
Author(s):  
Alexandra S. Golubenkova ◽  
Nikita E. Golantsov ◽  
Leonid G. Voskressensky
Keyword(s):  
Mass Spectrometry ◽  
High Resolution ◽  
1H Nmr ◽  
13C Nmr ◽  
Title Compound ◽  
High Resolution Mass Spectrometry ◽  
Domino Reaction ◽  
Methyl Propiolate ◽  
Ft Ir ◽  
Resolution Mass

Compounds with propargylamine moiety are useful synthetic precursors of several important classes of nitrogen-containing heterocycles. The title compound, methyl (2E)-3-[3-benzyl-2-(3-methoxy-3-oxoprop-1-yn-1-yl)-2-(1-naphthyl)imidazolidine-1-yl]acrylate, has been prepared by domino-reaction, employing easily available 1-benzyl-2-(1-naphthyl)-4,5-dihydro-1H-imidazole and methyl propiolate in a high 92% yield. The structure of title compound was determined using 1H-NMR, 13C-NMR, UV, FT-IR and HRMS (High-Resolution Mass Spectrometry).

Tetranitroquinodimethane (Tnq)—Electron-Deficient Prototype for a New Series of Organic Solid State Materials

1989 ◽  
Vol 173 ◽  
Author(s):  
David J. Vanderah ◽  
A. T. Nielsen ◽  
R. A. Hollins ◽  
Chris Baum
Keyword(s):  
Mass Spectrometry ◽  
Solid State ◽  
Title Compound ◽  
Radical Anion ◽  
H Nmr ◽  
Structural Assignment ◽  
Spectral Evidence ◽  
Vacuum Pyrolysis ◽  
Organic Solid ◽  
Solid State Materials

ABSTRACTRecently we have synthesized several new aryl compounds substituted with two or more trinitromethyl groups. Vacuum pyrolysis of one of these—±,±,±,±’,±’,±’-hexanitro-p-xylene (p-HNX)—gave the title compound via 1,6-elimination of N2O4. Structural assignment of TNQ is based on spectral evidence (UV, 1H NMR and mass spectrometry) and conversion to the known l,4-bis(bromodinitromethyl)benzene. Evidence for the formation of the TNQ radical anion has been obtained.

A Synthetic Approach for the Preparation of P1-AZT-5′-P3-d4T-5′-Triphosphate

2014 ◽  
Vol 1046 ◽  
pp. 100-103
Author(s):  
Shan Shan Gong ◽  
Qi Sun
Keyword(s):  
Mass Spectrometry ◽  
Efficient Method ◽  
Title Compound ◽  
Coupling Reaction ◽  
Experimental Results ◽  
Synthetic Approach

A novel and efficient method for the preparation of P1-AZT-5′-P3-d4T-5′-triphosphate has been developed. The title compound was characterized with 1H, 13C, and 31P NMR and mass spectrometry. The experimental results indicated that the employment of 4,5-dicyanoimidazole (DCI) as the activator could notably promote the coupling reaction of AZT 5′-phosphoropiperidate and d4T 5′-diphosphate.

How SIMS microscopy can be used in medicine

1992 ◽  
Vol 50 (2) ◽  
pp. 1602-1603
Author(s):  
Philippe Fragu
Keyword(s):  
Mass Spectrometry ◽  
Biomedical Applications ◽  
Secondary Ion Mass Spectrometry ◽  
Chemical Elements ◽  
Biological Applications ◽  
The Past ◽  
Potential Source ◽  
Secondary Ion ◽  
Chemical Integrity ◽  
Scientific Endeavour

The identification, localization and quantification of intracellular chemical elements is an area of scientific endeavour which has not ceased to develop over the past 30 years. Secondary Ion Mass Spectrometry (SIMS) microscopy is widely used for elemental localization problems in geochemistry, metallurgy and electronics. Although the first commercial instruments were available in 1968, biological applications have been gradual as investigators have systematically examined the potential source of artefacts inherent in the method and sought to develop strategies for the analysis of soft biological material with a lateral resolution equivalent to that of the light microscope. In 1992, the prospects offered by this technique are even more encouraging as prototypes of new ion probes appear capable of achieving the ultimate goal, namely the quantitative analysis of micron and submicron regions. The purpose of this review is to underline the requirements for biomedical applications of SIMS microscopy.Sample preparation methodology should preserve both the structural and the chemical integrity of the tissue.

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