scholarly journals Characterization of the Polycondensation by 1H NMR and 13C NMR

1998 ◽  
Vol 71 (7) ◽  
pp. 420-425
Author(s):  
Chikara KAWAMURA ◽  
Kenjiro TSUBOUCHI
Keyword(s):  
1H Nmr ◽  
13C Nmr

Synthesis and Spectral Characterization of New S-Alkylated 1,2,4-Triazoles as Potential Biological Agents

2017 ◽  
Vol 68 (10) ◽  
pp. 2436-2439
Author(s):  
Stefania Felicia Barbuceanu ◽  
Laura Ileana Socea ◽  
Constantin Draghici ◽  
Elena Mihaela Pahontu ◽  
Theodora Venera Apostol ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Spectral Data ◽  
1H Nmr ◽  
Elemental Analysis ◽  
13C Nmr ◽  
Ethyl Bromide ◽  
Spectral Characterization ◽  
Basic Medium ◽  
Phenacyl Bromide

In the work we presented the behavior of 5-(4-(4-X-phenylsulfonyl)phenyl)-4-(n-propyl)-2H-1,2,4-triazole-3(4H)-thiones (X= Cl or Br) with some alkylation agents. Thus, new S-alkylated 1,2,4-triazole derivatives were synthesized by reaction of the corresponding 1,2,4-triazole-3-thione derivatives with different �-halogenated compounds (ethyl bromide, ethyl chloroacetate or phenacyl bromide), in basic medium. The structures of synthesized compounds were elucidated by spectral data (1H-NMR, 13C-NMR, mass spectrometry) and elemental analysis.

Synthesis and Characterization of N-butyl-N-methylimidazolium- D-(-)-tartrate Chiral Ionic Liquid

2012 ◽  
Vol 518-523 ◽  
pp. 3989-3992 ◽  
Author(s):  
Yang Zhang ◽  
Xiao Hua Tu ◽  
Cheng Ping Miao ◽  
Jian Yi Wu
Keyword(s):  
Ionic Liquid ◽  
1H Nmr ◽  
Ion Chromatography ◽  
13C Nmr ◽  
Nmr Spectra ◽  
Optical Rotation ◽  
Synthesis And Characterization ◽  
13C Nmr Spectra ◽  
Chiral Ionic Liquid

A novel CIL of N-butyl-N-methyl imidazolium-D-(-)-tartrate has been designed and synthesized by neutralization reaction. Its structure was characterized by 1H-NMR and 13C-NMR spectra, the optical rotation was characterized by polarimeter with the value of-15.0º, and the purity was characterized by ion chromatography with the value of 98.4%.

Synthesis and Characterization of Some 4- Substituted Thiazolidinone Derivatives

2019 ◽  
Vol 10 (04) ◽  
pp. 631-636
Author(s):  
Zainab Ryad Magtoof ◽  
Mahmood Shakir Magtoof
Keyword(s):  
Schiff Bases ◽  
1H Nmr ◽  
13C Nmr ◽  
Mercaptoacetic Acid ◽  
Spectral Studies ◽  
Synthesis And Characterization

This study is concerned with the synthesis and characterization of 4-thiazolidinone derivatives (3a-3e). These compounds were prepared by reacting mercaptoacetic acid with the appropriate Schiff bases (imines) by heating at 50-60 °C in chloroform with moderate yields (51- 75 %). The structures of these 4-thiazolidinone derivatives were established on the basis of spectral studies using IR, 1H-NMR, 13C-NMR, and13C-NMR DEPT .

1H NMR and 13C NMR characterization of n-heptane extraction of low-temperature coal tar reacted with formaldehyde

2019 ◽  
Vol 42 (12) ◽  
pp. 1490-1498
Author(s):  
Qiuxiang Yao ◽  
Xiangxi Kong ◽  
Xiaomin Dai ◽  
Junwen Gao ◽  
Rucheng Wang ◽  
...  
Keyword(s):  
Low Temperature ◽  
1H Nmr ◽  
13C Nmr ◽  
Coal Tar ◽  
Nmr Characterization

Characterization of oligosaccharides from the chondroitin/dermatan sulfates. 1H-NMR and 13C-NMR studies of reduced trisaccharides and hexasaccharides

FEBS Journal ◽  
2005 ◽  
Vol 272 (24) ◽  
pp. 6276-6286 ◽  
Author(s):  
Thomas N. Huckerby ◽  
Ian A. Nieduszynski ◽  
Marcos Giannopoulos ◽  
Stephen D. Weeks ◽  
Ian H. Sadler ◽  
...  
Keyword(s):  
1H Nmr ◽  
13C Nmr ◽  
Nmr Studies

scholarly journals Synthesis and characterization of thiacalix[3]triazine and 1,3,5-tris(4- bromophenyl)benzene for chemsensor application

2018 ◽  
Vol 1 (6) ◽  
pp. 163-176
Author(s):  
Ha Tran Nguyen ◽  
Anh Tuan Luu
Keyword(s):  
1H Nmr ◽  
13C Nmr ◽  
Chemical Structure ◽  
Synthesis And Characterization

The synthesis of thiacalix[3]triazines and 1,3,5- tris(4-bromophenyl)benzene have been synthesized via simple steps and was characterized to determine the chemical structure. The structure of Thiacalix[3]triazines was characterized via 1H NMR and 13C NMR that conformed the expected structure of compound. In addition, the thiacalix[3]triazines exhibited the λmax at 560 nm and λonset at 720 nm which corresponding to the bandgap of 1.7 ev. Thiacalix[3]triazines, cyclotrimeric metacyclophanes with direct S linkages between the heteroaryl constituents, were shown to associate with anion that could be useful for chemsensor application.

scholarly journals Ureido Derivatives of Neoabietic Acid

Molbank ◽  
10.3390/m1033 ◽  
2018 ◽  
Vol 2018 (4) ◽  
pp. M1033
Author(s):  
Xinyu Gao ◽  
Niping Feng ◽  
Yuhan Zi ◽  
Jianguo Cao ◽  
Guozheng Huang
Keyword(s):  
Spectral Analysis ◽  
1H Nmr ◽  
13C Nmr ◽  
Structure Characterization ◽  
Curtius Rearrangement ◽  
Neoabietic Acid ◽  
Rearrangement Reaction ◽  
Derivatives Of

A series of ureido derivatives of neoabietic acid were synthesized by application of Curtius rearrangement reaction to neoabietic acid and amines. Structure characterization of these compounds was done by 1H-NMR, 13C-NMR and HRMS spectral analysis.

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