نتایج جستجو برای: 1hnmr

تعداد نتایج: 557  

Journal: :journal of physical & theoretical chemistry 2012
m. sadri f. sadeghzadeh darabi s. ahmadvand

ethylammonium propionate with high polarity and ionic conductivity was synthesized andcharacterized with 1hnmr and ir. this ionic liquid which is prepared from readily available startingmaterial in high yield shows reasonably high at viscosity and heat stability up to 150 °c. this ionicliquid is able to dissolve most of organic solvents due to the hydrogen interaction between ionicliquid and th...

Journal: :ChemistrySelect 2022

In analogy with the reaction of phenols very strong super acids, these compounds can be protonated by weaker acid trifluoroacetic (TFA) and trifluoromethanesulphonic (TFS) also giving rise to formation OH and/or ring products, which identified unambiguously means 1HNMR spectroscopy. The same reactions are possible deuterated acids TFA-d TFS-d. However, from reactions, additional information on ...

Journal: :International Journal of Health Sciences (IJHS) 2022

VEGFR-2 is a critical target for the treatment of solid tumors. This work represents synthetic approaches to new class fenamate-based derivatives with essential pharmacophoric properties comparable inhibitors. The reaction tolfenamic acid hydrazide substituted phenacyl bromide, and phenylisothiocynate produced novel (TA) (compounds 4 5). molecules were validated using spectroscopic techniques s...

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.

ژورنال: شیمی کاربردی 2015
رحیم حسین زاده خانمیری سولماز ذخیره میرزا آقا بابازاده

یک روش موثر برای سنتز سه جزئی تک مرحله‌ای 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: :international journal of molecular and clinical microbiology 0
khalil pourshamsian department of chemistry, tonekabon branch, islamic azad university, tonekabon, iran

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 ...

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...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان 1389

در این پایان نامه سنتز اسپیرولاکتون های استخلاف دار جدید با استفاده از واکنش سه جزئی کتون های آروماتیک، دی متیل استیلن دی کربوکسیلات و هتروسیکل های نیتروژن دار مورد تحقیق وپژوهش قرار گرفته است. تمامی اسپیرو لاکتون های سنتز شده توسط طیف هایir ، 1hnmr، 13cnmr، mass مورد شناسایی قرار گرفته اند. همچنین در واکنش دیگر روشی کارآمد و موثر به منظور سنتز مشتقی جدید از پیرولیدین با استفاده از واکنش چها...

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: :Biomedicine and chemical sciences 2022

Six derivatives of novel triazoles were produced from some substituted benzoic acid with thiocarbazide via method grinding. The Chemicals described 1HNMR, IR, and 13CNMR spectra examinations. Produced C2H3N3 examined assessed as reducing corrosion in 0.5 M HCl for low-C steel utilizing procedure losing weight. It was noticed that such chemicals had an encouraging act reducer counter to mild sol...

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