scholarly journals Synthesis of Polyimides derived from 2,6-diamino-4-methyl-1,3,5-triazine

2016 ◽  
Vol 13 (2) ◽  
pp. 196-209
Author(s):  
Baghdad Science Journal
Keyword(s):  
Nmr Spectroscopy ◽  
1H Nmr ◽  
13C Nmr ◽  
13C Nmr Spectroscopy ◽  
Second Step ◽  
Acid Chlorides ◽  
Triethyl Amine ◽  
Ft Ir

This work included synthesis of several new polymers of polyacryloyl chloride in two steps . The first step the included the reaction of N-( sub. or un sub. benzoyl and sub. or un sub. acetyl ) amidyl sub. 2,6- diamino -4-methyl-1,3,5-triazine (1-5) by condensation of many substituted acid chlorides with 2,6- diamino -4-methyl-1,3,5-triazine . While the second step included the reaction of polyacryloyl chloride with the produced compounds (1-5) in step (1) in the presence amount triethyl amine (Et3N) to obtain new polyimides (6-10). The prepared compounds were characterized by UV. , FT-IR, and some of them by 1H-NMR and 13C- NMR spectroscopy.

scholarly journals Synthesis, Characterization of Derivatives Tetrazoles for Trimethoprim Drug

2016 ◽  
Vol 13 (2) ◽  
pp. 266-274
Author(s):  
Baghdad Science Journal
Keyword(s):  
Nmr Spectroscopy ◽  
Physical Properties ◽  
Schiff Bases ◽  
1H Nmr ◽  
13C Nmr ◽  
1H Nmr Spectroscopy ◽  
Second Step ◽  
Direct Reaction ◽  
Ft Ir

The present work involved synthesis of serval new substituted tetrazole via Schiff bases for trimethoprim drug by two steps. The first step involved direct reaction of different ketones and aldehydes with trimethoprim producing the corresponding Schiff bases (1-10), whereas the second step, involved preparation new tetrazoles derivatives (11-20) through reaction of the ready Schiff bases (in the first step) with sodium azidein in dioxin. The prepared compounds were characterized by UV, FT-IR, and some of them by 13C-NMR, 1H-NMR spectroscopy and physical properties.

Combined High-Resolution Solid-State 1H/13C NMR Spectroscopy and 1H NMR Relaxometry for the Characterization of Kerogen Thermal Maturation

2020 ◽  
Author(s):  
Francesco Panattoni ◽  
Jonathan Mitchell ◽  
Edmund J. Fordham ◽  
Ravinath Kausik ◽  
Clare P. Grey ◽  
...  
Keyword(s):  
Solid State ◽  
Nmr Spectroscopy ◽  
High Resolution ◽  
1H Nmr ◽  
13C Nmr ◽  
13C Nmr Spectroscopy ◽  
Thermal Maturation ◽  
Nmr Relaxometry ◽  
1H Nmr Relaxometry

scholarly journals Secondary metabolites of three endemic Centaurea L. species

2014 ◽  
Vol 79 (11) ◽  
pp. 1355-1362 ◽  
Author(s):  
Vele Tesevic ◽  
Ivana Aljancic ◽  
Slobodan Milosavljevic ◽  
Vlatka Vajs ◽  
Iris Djordjevic ◽  
...  
Keyword(s):  
Quantitative Analysis ◽  
Nmr Spectroscopy ◽  
Secondary Metabolites ◽  
Sesquiterpene Lactone ◽  
1H Nmr ◽  
13C Nmr ◽  
1H Nmr Spectroscopy ◽  
13C Nmr Spectroscopy ◽  
Esi Ms ◽  
Aerial Parts

The aerial parts of three endemic Centaurea L. species, namely C. tomorosii Micevski, C. soskae Hayek and C. galicicae Micevski, afforded sesquiterpene lactone cnicin (1) and seven flavonoids: apigenin (2), isokaempferide (3), hispidulin (4), eupatorin (5), cirsimaritin (6), santaflavone (7) and salvigenin (8). The structures of the isolated compounds were determined by UV, 1H NMR and 13C NMR spectroscopy and HR-ESI-MS spectrometry. 1H NMR spectroscopy was used as a method for quantitative analysis of sesquiterpene lactone cnicin.

New Heterocyclic Compounds from 1,2,4-triazoles Class with Potential Cytotoxic Activity

2017 ◽  
Vol 68 (11) ◽  
pp. 2503-2508 ◽  
Author(s):  
Laura Ileana Socea ◽  
Stefania Felicia Barbuceanu ◽  
Bogdan Socea ◽  
Constantin Draghici ◽  
Theodora Venera Apostol ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Cytotoxic Activity ◽  
Spectral Data ◽  
1H Nmr ◽  
Elemental Analysis ◽  
13C Nmr ◽  
Heterocyclic Compounds ◽  
Cytotoxic Effect ◽  
13C Nmr Spectroscopy ◽  
New Compounds

Acylhydrazinecarbothioamides (2a,b) were synthesized by addition of 2-(5H-dibenzo[a,d][7]annulen-5-yl)acetohydrazide to different isothiocyanates. The new 1,2,4-triazol-3-thioles (3a,b) were synthesized by cyclization of new 2- acylhydrazinecarbothioamides (3a,b) in basic media. Alkylation of 1,2,4-triazole-3-thiols (3a-c) with ethyl bromide gave only S-substituted derivatives (4a-c). The structures of the synthesized compounds have been established on spectral data (IR, 1H-NMR and 13C-NMR spectroscopy) and elemental analysis. The cytotoxic effect of new compounds was evaluated using two alternative models on plant and invertebrate organisms.

scholarly journals Synthesis some 4-substituted 9,10-anthraquinones

2020 ◽  
Vol 8 (1) ◽  
pp. 58-65
Author(s):  
Vasyl Shupeniuk ◽  
Tetyana Taras ◽  
Oksana Sabadakh ◽  
Eugene Luchkevich ◽  
Yurii Kornii
Keyword(s):  
Nmr Spectroscopy ◽  
1H Nmr ◽  
Elemental Analysis ◽  
13C Nmr ◽  
Coupling Reaction ◽  
13C Nmr Spectroscopy ◽  
Analysis Data ◽  
Elemental Analysis Data ◽  
Ullmann Coupling

New 4-substituted 9,10-anthraquinones (6 compouds) with amino derivations fragments were synthesized through the substitution of the bromaminic acid by amines using the Ullmann coupling reaction. The structures of the synthesized compounds were determined using LC-MS, 1H NMR, 13C NMR spectroscopy, and elemental analysis data.

scholarly journals Synthesis of new Polyimides Derived from 4- minoantipyrine

2016 ◽  
Vol 13 (4) ◽  
pp. 782-792
Author(s):  
Baghdad Science Journal
Keyword(s):  
Melting Point ◽  
Nmr Spectroscopy ◽  
Physical Properties ◽  
13C Nmr ◽  
Acid Chloride ◽  
Softening Point ◽  
13C Nmr Spectroscopy ◽  
Acryloyl Chloride ◽  
One Step ◽  
Ft Ir

In the present study, new five polymers of acryloyl chloride have been synthesized by reaction 4-aminoantipyrine with many substituted acid chloride (A-E). Then condensation of polyacryloyl chloride with the product in one step (A-E), in a suitable solvent in the presence amount of (Et3N) to obtain new polyimides(A1-E5). The prepared compounds were characterized by UV. FT-IR, 1H-NMR and 13C-NMR spectroscopy and measuring of other physical properties such as softening point, melting point and solublities.

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