نتایج جستجو برای: 1hnmr study

تعداد نتایج: 3968844  

ژورنال: :شیمی کاربردی 0
میرزا آقا بابازاده رحیم حسین زاده خانمیری سولماز ذخیره

یک روش موثر برای سنتز سه جزئی تک مرحله ای مشتقات 2،3،4،5- تتراهیدروبنزو [b] ]1،4[ اکسوزپین و مالونامید در حضور mcm-48/h5pw10v2o40 به عنوان کاتالیزگر ناهمگن و قابل بازیافت تحت شرایط بدون حلال و تابش مایکروویو در ºc 40 گزارش شده است. ساختار ترکیبات سنتزی جدید به وسیله اسپکتروسکوپی 13cnmr ,1hnmr ,ftir و آنالیز عنصری مشخص شدند.

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 1990
jabbar khalafy j.m. bruce

several 10-substituted anthralins were readily prepared. their oxidation with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone gave the corresponding novel heteroatomic systems. all derivatives were fully characterized by ir, mass and 1hnmr spectroscopy.

2015
LAILA M. BREAK MAHMOUD A. MOHAMED SHAMS H. ABDEL-HAFEZ

Selenium containing nucleosides derived from some heterocyclic moieties such as Pyridineselenol, and pyridazineselenol is described herein. Ribosylation of selenol compounds were prepared in good yield by silyation of selenol derivatives with 1-O-acetyl-2,3,5-tri-O-benzoyl-D-ribofuranose followed by debenzoylation to afford the corresponding free N-nucleosides  and -1-(2,3,5-trihydroxy--D-r...

Journal: :Polimery w medycynie 2004
Marian Mikołaj Zgoda Michał Nachajski Marcin Woskowicz Marek Lukosek

Systematic research has been conducted on the products of catalytic oxyethylenation of lanolin. The level of hydrophilic-lipophilic balance HLB and the amount of oxyethylene segments nTE in homologous series of products were determined by means of the 1HNMR method. Viscosity and spectrophotometry measurements were used to determine solubilization indices n/s/, the micellar partition coefficient...

2015
R Kalirajan S Jubie B Gowramma

Melting points were obtained on Veego VMP-1 apparatus in open capillary tubes and are uncorrected. The reactions were monitored by TLC on silica gel thin layer plates. Compounds were analyzed for C, H, N and analytical results obtained for these elements were within ±0.5% of the calculated values for the formula shown. IR spectra were obtained using a Perkin Elmer spectrum-2 FT-IR spectrometer....

2015
Arti saxena

Some new isatin3hydrazone derivatives that are Isatin3(benzylidene)hydrazone, Isatin3-(methyl ethylide)hydrazone, isatin 3-(isoproplylidene)hydrazone have been synthesized from the reaction of isatin3-hydrazone and different aldehydes and ketones. Thestructure of synthesized compound is assigned on the basis of, IR, 1HNMR, 13CNMRdata. The anti microbial activity was done by disk diffusion metho...

2017
Shyam Sundar Gupta Lubna Azmi P. K. Mohapatra Ch. V. Rao

BACKGROUND Euphorbia hirta possesses antibacterial, anti-inflammatory, galactogenic, antidiarrheal, antioxidant, hypoglycemic, antiasthmatic, antiamebic, antifungal, and antimalarial activities. OBJECTIVE The overall objective of the current study was the investigation of the whole plant extract of E. hirta and flavonoids from E. hirta on gastroesophageal reflux disease (GERD) in rats. MATE...

Journal: :Oriental journal of chemistry 2022

The novel Ligand was prepared by irradiation of 2-amino-1-methyl benzimidazole and 3’,5’-dimethoxy-4'-hyroxy acetophenone, in scientific microwave oven its transition metal complexes were from Ni(II), Mn(II), Cd(II), Fe(III), Cu(II), Zn(II), Co(II), Ag(I) salts. synthesized Schiff base ligand characterized elemental analysis, spectral technics such as UV-Visible, FT-IR, 1HNMR, LC-MS Thermo grav...

Journal: :journal of sciences, islamic republic of iran 2011
a. shafiee

a series of new hexahydroquinoline and 1,4-dihydropyrimidine derivatives were synthesized. condensation of 2-methyl- thiazole-4-carboxaldehyde (1) with 1,3-cyclohexanedione and alkyl 3- aminocrotonate afforded 4-(2-methyl-thiazol-4-yl)-hexahydroquinoline while condensation of aldehyde (1) with benzoyl acetone and thiourea gave 1,4-dihydropyrimidine derivatives. the stereochemistry of 1,4-dihydr...

Journal: :international journal of molecular and clinical microbiology 0
khalil pourshamsian department of chemistry, tonekabon branch, islamic azad university, tonekabon, iranسازمان اصلی تایید شده: دانشگاه آزاد اسلامی تنکابن (islamic azad university of tonekabon)

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...

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