نتایج جستجو برای: 1hnmr study

تعداد نتایج: 3968844  

Journal: :Oriental journal of chemistry 2022

Benzofurans display a wide array of pharmaceutical activities. The present work incorporates the synthesis some novel benzofuran derivatives. compound 1 (z)-3-amino-7methoxy-N1-(2-oxoindolin-3-yliedene)benzofuran-2-carbohydrazide was synthesized by refluxing carbohydrazide and isatin. formed key intermediate for compounds 2a-c. structures prepared derivatives were established physical spectral ...

Journal: :Journal of clinical research and reports 2022

This work is concerned with the preparation of a number organic ammonium formate salts (or ionic liquids; ILs) throughout reaction between formic acid and some aliphatic aromatic amines including ammonia. Five were formed, them in form solid others as liquids (ILs) at room temperature. The yields prepared ranged from (21%) to (79%). However, attempts towards other fifteen not successful. result...

Some N¬-acyl-N'-aryl thiourea derivatives 4(a-f) have been prepared by the reaction of acyl halides ammonium thiocyanate and aryl amines. The structures of synthesized compounds have been characterized by IR, 1HNMR spectral studies. The synthesized compounds 5(a-f) have been screened for antibacterial activity. The effect of the structure of the investigated compounds on the antibacterial activ...

2013
Koichi Komatsu

The first synthesis of endohedral fullerene containing molecular hydrogen, H2@C60, is briefly summarized. The synthesis was conducted according to what we call the ‘molecular surgical method’, that is, opening a hole on a C60 surface, enlargement of the hole, insertion of a guest species and enclosure of the hole without loss of the encapsulated guest. The entire process involves three chemical...

2014
Indu Singh

5-phenyl-1,3,4-thiadiazol-2-amine (1), on reaction with substituted indolaldehyde in presence of glacial acetic acid give N-((2-substituted indol-3-yl)methylene)-5-phenyl-1,3,4-thiadiazol-2-amine (26). The compounds 2-6 when treated with acetyl chloride in presence of triethylamine undergo cycloaddition to produce 4-(2-substituted indol-3-yl)-1-(5-phenyl-1,3,4-thiadiazol-2-yl)azetidin-2-one (7-...

2014
ANIL KUMAR RAJvIR SINgH

Synthesis of 4-[(2/4-chloro-/2,3-dichloro-/2/4-bromo-/2,4-dinitro-/4-nitrophenyl) anilinemethyl]6-t-butyl-2H-1-benzopyran-2-ones have been carried out. Synthesized compounds were characterized by 1HNMR, IR and other physical and analytical data. All of the synthesized compounds were evaluated for their antifungal activity against Aspergillus awamori and Sclerotium rolfsii and antibacterial acti...

2014
Raut Sachin Khan Shahana Arvind Chavhan

Copyright: © Author(s), This is an open access article under the terms of the Creative Commons Attribution Non-Commercial No Derivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is noncommercial and no modifications or adaptations are made. Rhizophora mucronata Lamk and Acanthus ilicifolius Linn, which are classified as true and...

2015
Huda E. Abdelwahab Seham Y. Hassan Galila A. Yacout Mohamed A. Mostafa Mohamed M. El Sadek

N-substituted chitosan derivatives were synthesized through condensation with a number of selected aryl and heteroaryl aldehydes. The synthesis of the amino-derivatives has been carried out by reductive amination with sodium borohydride as reducing agent. Their structures were characterized by (FT-IR, 1HNMR, and XRD). The antimicrobial activity of Chitosan Schiff’s base (CSB) derivatives were i...

2013
AMIRA A. GHONEIM SAHAR A. MOHAMED

Tert-butyl carbazate (1) reacted with ammonium thiocyanate and phenyl isothiocyanate to afford the corresponding 5-tert-butoxy-4H-1, 2, 4-triazole-3-thiol (3) 5-tert-butoxy-4-phenyl-2H1, 2, 4-triazole-3(4H)-thione 5 respectively. Compound (1) also reacted with carbon disulfide and potassium hydroxide to afford 5-tert-butoxy-1, 3, 4-oxadiazole-2(3H)-thione 6. Treatment of 6 with methyl iodide, 2...

Elie Salami Mohsen Nikpour,

Displacement reaction of 2,3-dichloroquinoxaline with secondary amines in boiling ethanol afforded it`s mono aminoquinoxaline derivatives. Further reaction of the latter compounds with sodium azide in warm dimethylsulfoxide achieved a group of 4-amino tetrazolo[1,5-a]quinoxaline derivatives. 1HNMR spectra of these compounds are discussed.

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