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.

scholarly journals Synthesis of N –sulfamethoxazolederivative imide on polymeric chain

2014 ◽  
Vol 11 (4) ◽  
pp. 1567-1576
Author(s):  
Baghdad Science Journal
Keyword(s):  
Melting Point ◽  
Physical Properties ◽  
13C Nmr ◽  
Acid Chloride ◽  
Uv Spectroscopy ◽  
Second Step ◽  
Polymeric Chain ◽  
Acryloyl Chloride ◽  
Prepared Compound ◽  
Ft Ir

The present work involved synthesis of several new N-Sulfamethoxazol derivatives imide on Polymeric chain by two steps. The first stip involved preparation of N- (sub.orunsub benzoyl and sub unsub acetyl) amidyl sub sulfamethoxazole (1-5) by condensation of sulfamethoxazole drug with many substituted acid chloride, then the second step include, preparation new five N-(acrly-N–sub or unsub benzoyl) imidyl substituted sulfamethoxazol(6-10) by reaction of poly acryloyl chloride with the prepared compound (1-5) in first stepin asuitable solvent in the presenceamount triethylamine (Et3N) with heating. The structure confirmations of all polymers wereconfirmed using FT-IR,1H-NMR,13C-NMR and UV spectroscopy. Other physical properties including softeningpoint's, melting point, and solubility of the polymers were also measured.

scholarly journals Quinazolin-4(3H)-ones and 5,6-Dihydropyrimidin-4(3H)-ones from β-Aminoamides and Orthoesters

Molecules ◽  
2018 ◽  
Vol 23 (11) ◽  
pp. 2925 ◽  
Author(s):  
Joshua Gavin ◽  
Joel Annor-Gyamfi ◽  
Richard Bunce
Keyword(s):  
Acetic Acid ◽  
Melting Point ◽  
1H Nmr ◽  
13C Nmr ◽  
Pressure Tube ◽  
Absolute Ethanol ◽  
Basic Nitrogen ◽  
One Step ◽  
Ft Ir

Quinazolin-4(3H)-ones have been prepared in one step from 2-aminobenzamides and orthoesters in the presence of acetic acid. Simple 2-aminobenzamides were easily converted to the heterocycles by refluxing in absolute ethanol with 1.5 equivalents of the orthoester and 2 equivalents of acetic acid for 12–24 h. Ring-substituted and hindered 2-aminobenzamides as well as cases incorporating an additional basic nitrogen required pressure tube conditions with 3 equivalents each of the orthoester and acetic acid in ethanol at 110 °C for 12–72 h. The reaction was tolerant towards functionality on the benzamide and a range of structures was accessible. Workup involved removal of the solvent under vacuum and either recrystallization from ethanol or trituration with ether-pentane. Several 5,6-dihydropyrimidin-4(3H)-ones were also prepared from 3-amino-2,2-dimethylpropionamide. All products were characterized by melting point, FT-IR, 1H-NMR, 13C-NMR, and HRMS.

scholarly journals Synthesis of New Some Imidazole Derivatives Containing ?-Lactam Ring

2016 ◽  
Vol 13 (2) ◽  
pp. 307-316
Author(s):  
Baghdad Science Journal
Keyword(s):  
Nmr Spectroscopy ◽  
Acetic Anhydride ◽  
Hydrazine Hydrate ◽  
Schiff Bases ◽  
Aromatic Aldehyde ◽  
13C Nmr ◽  
13C Nmr Spectroscopy ◽  
Chloroacetyl Chloride ◽  
Lactam Ring ◽  
Ft Ir

In this work 5-methylene-yl - (2-methy –oxazole-4-one) (1H) imidazole (1) were synthesized from the reaction of L-Histidine with acetic anhydride and which converted to the of 5-methylene-yl-(2-methyl 3-amino imidazole-4-one)-1H-imidazole (2) by reaction with hydrazine hydrate. Schiff bases (3-6) were synthesized from the reaction of compound (2) with different aromatic aldehyde. Reaction of compounds (3-6) with chloroacetyl chloride gives azetidinone one derivatives (7-10). These compounds were characterized by FT-IR and some of them with 1H-NMR and 13C-NMR spectroscopy.

scholarly journals 4′-(5-Methylfuran-2-yl)-2,2′:6′,2″-terpyridine: A New Ligand Obtained from a Biomass-Derived Aldehyde with Potential Application in Metal-Catalyzed Reactions

Molbank ◽  
10.3390/m1032 ◽  
2018 ◽  
Vol 2018 (4) ◽  
pp. M1032 ◽  
Author(s):  
Jérôme Husson ◽  
Laurent Guyard
Keyword(s):  
Nmr Spectroscopy ◽  
13C Nmr ◽  
Potential Application ◽  
Benzyl Bromide ◽  
13C Nmr Spectroscopy ◽  
1H And 13C Nmr ◽  
Elemental Analyses ◽  
One Step ◽  
Catalyzed Reactions ◽  
Metal Catalyzed

The new ligand 4′-(5-methylfuran-2-yl)-2,2′:6′,2″-terpyridine (1) was prepared in one step from 2-acetylpyridine and 5-methylfurfural. The latter is an aldehyde that can be readily obtained from biomass. The new terpyridine molecule was characterized by 1H and 13C-NMR spectroscopy as well as by elemental analyses and HR-MS. Owing to its chelating properties, this new terpyridine molecule was tested as a ligand in a metal-catalyzed reaction: The Ni-catalyzed dimerization of benzyl bromide.

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.

scholarly journals Synthesis of substituted (oxazepine, Diazepine, tetrazde) via Schiff Bases for 2- Aminobenzo Thaizole Derivatives

2013 ◽  
Vol 10 (3) ◽  
pp. 736-748 ◽  
Author(s):  
Baghdad Science Journal
Keyword(s):  
Nmr Spectroscopy ◽  
Schiff Bases ◽  
13C Nmr ◽  
Sodium Azide ◽  
Aromatic Amines ◽  
13C Nmr Spectroscopy ◽  
Aldehydes And Ketones ◽  
Primary Aromatic Amines ◽  
Ft Ir ◽  
Tetrazole Derivatives

This work includs synthesis of several Schiff bases by condensation of 6- methoxy – 2- amino benzothiazole with some aldehydes and ketones (2- hydroxyl benzaldehyde, 4- hydroxyl benzaldehyde, 4- N,N –dimethy amino acetophenone, benzophenone) to abtain schiff bases (1-5). These schiff bases were found to react with phthalate anhydride to give oxazepine derivatives (6-10) that were reacted with primary aromatic amines to give Diazepine derivatives (11-15). Besides, we prepared new tetrazole derivatives (16-20) from the reaction of the prepared Schiff bases with sodium azide in the prepared compounds that were characterized by physical properties, FT-IR and some of the 1H-NMR and 13C –NMR spectroscopy.

scholarly journals New N-aryloxy-phthalimide derivatives. Synthesis, physico-chemical properties, and QSPR studies

2010 ◽  
Vol 8 (4) ◽  
pp. 789-796
Author(s):  
Madalina Tudose ◽  
Florin Badea ◽  
Miron Caproiu ◽  
Adrian Beteringhe ◽  
Maria Maganu ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Partition Coefficient ◽  
Physical Properties ◽  
13C Nmr ◽  
Chemical Properties ◽  
13C Nmr Spectroscopy ◽  
Log P ◽  
Physico Chemical ◽  
Picryl Chloride ◽  
Qspr Study

AbstractStarting from N-hydroxyphthalimide 1 and the reactive fluoro- or chloro-nitroaryl derivatives 2, 3 and 4a-e (2-chloro-3,5-dinitropyridine; 3, NBD-chloride; 4a, 1-fluoro-2,4-dinitrobenzene; 4b, picryl chloride; 4c, 4-chloro-3,5-dinitrobenzotrifluoride; 4d, 2-chloro-3,5- dinitrobenzotrifluoride; 4e, 4-chloro-3,5-dinitrobenzoic acid) the corresponding N-(2-nitroaryloxy)-phthalimide derivatives 5a-e, or 6 and 7 were obtained and characterized by IR, UV-Vis 1H-NMR and 13C-NMR spectroscopy. The TLC behavior and the hydrophobicity of these derivatives have been experimentally evaluated by RM0 parameters (using RP-TLC). The experimental RM0 parameters were compared with the calculated partition coefficient, log P. A QSPR study was also performed to establish possible correlations between the structure and physical properties (λmax and RM0) of compounds 5a-e, 6, and 7.

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