scholarly journals SYNTHESIS AND CHARACTERIZATION OF BOC-PROTECTED THIO-1,3,4-OXADIAZOL-2-YL DERIVATIVES

2021 ◽  
pp. 5-10
Author(s):  
S. SYED SHAFI ◽  
R. RAJESH ◽  
S. SENTHILKUMAR
Keyword(s):  
Photoluminescence Spectrum ◽  
Chemical Structure ◽  
Phenylacetic Acid ◽  
Industrial Applications ◽  
Powder Xrd ◽  
Synthesis And Characterization ◽  
The Novel ◽  
Structural And Optical Properties ◽  
Good Thermal Stability

Objective: The objective of this work is to synthesis thio-1,3,4-oxadiazol-2-yl derivatives for industrial applications. Methods: The synthesis was done by the reaction of (S)-2-amino-2-phenylacetic acid with ethanol-derived ethyl (S)-2-amino-2-phenylacetate. The reaction of ethyl (S)-2-amino-2-phenylacetate with Boc anhydride and hydrazine produces ethyl (S)-2-((tert-butoxycarbonyl)amino)-2-phenylacetate. The intermediate 5-alkyl amino-1,3,4-oxadiazole-2-thiols have been isolated as stable compounds. Results: To study the characteristics of these compounds, they are subjected to 1HNMR, 13CNMR, and IR. These studies examine the chemical structure of synthesized compounds. The mass of the novel compounds was established with the help of the LCMS test. The structural and optical properties were examined by the powder XRD and photoluminescence spectrum respectively. Conclusion: The sharp intense peak in the powder XRD indicates the crystal nature of the sample. The values obtained from the LCMS test indicate that the compounds have good thermal stability. The absorption peak at 358 nm in the PL spectrum indicates that the sample can be used in photoelectronic devices.

Synthesis and Characterization of Novel Degradable Responsive Polyurethane Microsphere

2013 ◽  
Vol 750-752 ◽  
pp. 1271-1275 ◽  
Author(s):  
Lian Hai Shan ◽  
Yuan Yuan Cui ◽  
Shuai Huang ◽  
Zhi Bin Zhang
Keyword(s):  
Drug Delivery ◽  
Molecular Weight ◽  
Chemical Structure ◽  
Solvent Polarity ◽  
Toluene Diisocyanate ◽  
Synthesis And Characterization ◽  
The Novel ◽  
Swelling Ratio ◽  
Swelling Properties

The present study describes degradable polyurethane (PU) microspheres fabricated using toluene diisocyanate, polycaprolactone, polyethylene glycol, 2, 2-hydroxymethyl-2-propionic acid and triethylamine for drug delivery. The novel microspheres were synthesized using self-emulsion and condensed phase separation method. Fourier-Transform Infrared Spectrum analysis (FTIR) was performed revealing the chemical structure of polyurethane microspheres with special chains changing. Swelling properties influenced by solvent polarity, PEG content, PEG molecular weight, were evaluated, suggesting that the swelling ratio (SR) of PU microspheres increased with the increase in solvent polarity, PEG content and PEG molecular weight respectively.

Synthesis and Characterization of Poly(N-Arylenebenzimidazole Ketone)

2012 ◽  
Vol 204-208 ◽  
pp. 4211-4214 ◽  
Author(s):  
Ye Wei Xu ◽  
Jie Tang ◽  
Guan Jun Chang ◽  
Fang Hua Zhu ◽  
Lin Zhang
Keyword(s):  
Weight Loss ◽  
Chemical Structure ◽  
Synthesis And Characterization ◽  
The Novel ◽  
Displacement Reaction ◽  
Good Solubility ◽  
Nucleophilic Displacement ◽  
Ft Ir ◽  
Good Agreement

Using 1,4-bis(2-benzimidazolyl) benzene (BBIB) and 4,4'-difluorobenzophenone as the monomers, poly(N-arylenebenzimidazole ketone) (PNABIK) has been prepared via the aromatic nucleophilic displacement reaction. The chemical structure of PNABIK was confirmed by FT-IR, elemental analysis and 1H NMR. The results show a good agreement with the proposed structures. The polymer was obtained in quantitative yields with Mn value 12500 and Mw value 28600, respectively. DSC and TGA measurements show that the glass transition temperature (Tg) is 202 °C and 5% weight loss temperature is 550°C in nitrogen and 571 °C in air, respectively. In addition, the novel polymer exhibit good solubility.

Synthesis and characterization of novel sulfonated polyimide with varying chemical structure for fuel cell applications

2018 ◽  
Vol 319 ◽  
pp. 141-147 ◽  
Author(s):  
Khurram Liaqat ◽  
Wajid Rehman ◽  
Shaukat Saeed ◽  
Muhammad Waseem ◽  
Srosh Fazil ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Chemical Structure ◽  
Synthesis And Characterization ◽  
Sulfonated Polyimide

Rapid Synthesis and Characterization of CuInS2 Prepared Using Microwave-Assisted Heating

2015 ◽  
Vol 775 ◽  
pp. 143-146
Author(s):  
Ming Kwen Tsai ◽  
Yueh Chien Lee ◽  
Chia Chih Huang ◽  
Sheng Yao Hu ◽  
Kwong Kau Tiong ◽  
...  
Keyword(s):  
Synthesis And Characterization ◽  
X Ray Diffraction ◽  
Structural And Optical Properties ◽  
Rapid Synthesis ◽  
X Ray ◽  
Sem Image ◽  
Microwave Assisted ◽  
Calcination Treatment ◽  
Scanning Electron

In this work, the CuInS2 nanoparticles are successfully synthesized by microwave-assisted heating technique and further calcined at 400 °C. The morphological, structural, and optical properties of the synthesized CuInS2 nanoparticles are investigated by scanning electron microscope (SEM), X-ray diffraction (XRD), Raman scattering, and transmittance measurement, respectively. The SEM image shows the clear particle shape of the calcined CuInS2 nanoparticles. After calcination treatment, the fundamental (112) peak of the XRD spectrum and a broad Raman peak mixed with chalcopyrite and CuAu structures support the improved crystallinity of the calcined CuInS2 nanoparticles.

Synthesis and Characterization of Fluorinated Alkyl Substituted Disiloxane

2014 ◽  
Vol 529 ◽  
pp. 13-15
Author(s):  
Qing Chuan Xi ◽  
Ke Cao ◽  
Ya Wen Huang ◽  
Guan Jun Chang ◽  
Jun Xiao Yang
Keyword(s):  
High Performance ◽  
Chemical Structure ◽  
Rust Resistance ◽  
Condensation Reaction ◽  
Synthesis And Characterization ◽  
Silicon Oil ◽  
Temperature Performance ◽  
Diffusion Pump ◽  
Measurement Results

Alkyl substituted disiloxanes demonstrated promising applications as high performance hydraulic oil, diffusion pump oil, etc. In this study, fluorinated alkyl substituted disiloxane was synthesized via Grignard reaction followed by condensation reaction. Its chemical structure was verified by FTIR and NMR. Measurement results showed that this silicon oil exhibited good high temperature performance, oxidation resistance and rust resistance.

Synthesis and characterization of calcium–alumino-silicate hydrates from oil shale ash – Towards industrial applications

Fuel ◽  
2008 ◽  
Vol 87 (10-11) ◽  
pp. 1998-2003 ◽  
Author(s):  
Janek Reinik ◽  
Ivo Heinmaa ◽  
Jyri-Pekka Mikkola ◽  
Uuve Kirso
Keyword(s):  
Oil Shale ◽  
Industrial Applications ◽  
Synthesis And Characterization ◽  
Oil Shale Ash ◽  
Alumino Silicate ◽  
Shale Ash

Synthesis and Characterization of Y2O3 Nanoflowers

2012 ◽  
Vol 465 ◽  
pp. 76-79 ◽  
Author(s):  
Shuang Zhan ◽  
Xia Li
Keyword(s):  
Fourier Transform ◽  
Phase Composition ◽  
Electron Microscope ◽  
Synthesis And Characterization ◽  
The Novel ◽  
X Ray Diffraction ◽  
Facile Hydrothermal Method ◽  
X Ray ◽  
Scanning Electron

The novel Y2O3 nanoflowers were synthesized through a facile hydrothermal method without using any catalyst or template. The phase composition and the microstructure of as-prepared products were characterized by field emission scanning electron microscope (FE-SEM), X-ray diffraction (XRD) as well as Fourier transform infrared spectrum. The formation mechanism for the Y2O3 flowers has been proposed.

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