نتایج جستجو برای: 1hnmr study
تعداد نتایج: 3968844 فیلتر نتایج به سال:
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 ...
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...
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...
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-...
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...
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...
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...
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...
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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