نتایج جستجو برای: complex compound reaction mechanism

تعداد نتایج: 1738393  

Journal: :journal of sciences islamic republic of iran 0

reaction of sodium salt of allyl alcohol with 2-chloro-5-phenyl- l,3,4-thiadiazole gave 2-allyloxy-5-phenyl-1,3,4-thiadiazole 2. compounds 4a and 4b could be obtained through the reaction of nitrone 3 with 2. reaction of compound 2 with nitrone 5 afforded the final compound 6. antifungal activity of all compounds was less than ketoconazole

Reaction of aryl methyl ketone with isatin in the presence of a base afforded 2- arylquinoline-4-carboxylic acid (3). Reaction of diazomethane with compound 3 yielded the ester 4. Compound 5 was prepared from the reaction of N, N'-dialkylethyl (or propyl) arnine with 4. Addition of hydrazine hydrate to compound 4a gave 2- (2- pyridyl) quinoline-4-carboxylic acid hydrazide (6). Reaction of l...

The reaction of CH3O2 radicals with acetaldehyde on the solid surface of NH4NO3 has been studied in a flow capillary reactor at low pressure and room temperature. The experiments were performed using EPR spectrometer combined with the kinetic method of radicals freezing. Peroxy radicals revealed an oscillation complex behavior during the process regarding to the phenomenon of radicals multiplic...

2017
Qamar Abbas Zaman Ashraf Mubashir Hassan Humaira Nadeem Muhammad Latif Samina Afzal Sung-Yum Seo

The present work describes the synthesis of few hydroxylated amide derivatives as melanogenesis inhibitors. In vitro, in vivo and computational studies proved that compound 6d is a highly potent melanogenesis inhibitor compared to standard kojic acid. The title amides 4a-e and 6a-e were synthesized following simple reaction routes with excellent yields. Most of the synthesized compounds exhibit...

Journal: :Chemical communications 2009
Cechao Foo Kai-Chung Lau Yi-Fan Yang Cheuk-Wai So

The reaction of [(PPh(2)=S)(2)CH(2)] (1) with MeLi followed by a salt elimination reaction with GeCl(4) in toluene afforded a novel germanium bismethanediide complex, 2. The structure of compound 2 has been determined by X-ray crystallography. The topological analysis of the electron densities of compound 2 was performed.

2001
Tomoyuki Oe Toshimasa Toyo’oka

The adduct formation of 2′-deoxyguanosine (dG) with L-adrenaline under biomimetic conditions (pH 7.5, 37°C) with or without oxidant (MnO2) was demonstrated in order to clarify the reaction mechanism and the structure. At least two adducts have been observed by liquid chromatography-electrospray ionization-ion trap mass spectrometry (LC-ESI-ion trap MS) and LC-photodiode array detection (LC-PAD)...

Journal: :physical chemistry and electrochemistry 0
davood kaviani young researchers and elite club, east tehran branch, islamic azad university, tehran, iran majid saghi department of chemistry, faculty of science, arak branch, islamic azad university, arak, iran maryam agha mohammadi department of chemistry, faculty of science, arak branch, islamic azad university, arak, iran mohammad hosein bigtan department of chemistry, faculty of science, arak branch, islamic azad university, arak, iran

the studies performed about electrochemical oxidation 2-amino-4-methylphenol indicate that ortho-quinone yielded through oxidation of this chemical compound was unstable and it could be used as michael acceptor under solvent influences, carrier electrolyte, additives and could be transformed into the various compounds in the form of 1-4 addition michael reaction. based on this, in the paper fir...

Journal: :Chemical communications 2011
Lei Hu Xueqin Cao Jianhui Yang Min Li Haiyan Hong Qingfeng Xu Jianfeng Ge Lihua Wang Jianmei Lu Liang Chen Hongwei Gu

Ultra-thin gold nanowires (GNWs), with uniform surface crystallinity, appear much more active than gold nanoclusters in benzylic compound oxidation. Ethylbenzene oxidation was used as a model reaction and a radical chain reaction mechanism was revealed by the DFT method.

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