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کاربرد نوع شرط:
- جایگاه : پژوهشی
- مجله: International Journal of Heterocyclic Chemistry
- نوع مقاله: Journal Article
- کلمات کلیدی:
- چکیده:
- چکیده انگلیسی:
- انتشار مقاله: 19-04-1395
- نویسندگان: Javad Safari,Hassan Karbasizadeh,Sayed Hossein Banitaba
- مشاهده
- جایگاه : پژوهشی
- مجله: International Journal of Heterocyclic Chemistry
- نوع مقاله: Journal Article
- کلمات کلیدی: Microwave Irradiation,Solvent-free conditions,Nـ alkyl 2ـ ketomethylquinoline,Enaminone,triethyl amine
- چکیده:
- چکیده انگلیسی: A series of Nـ alkyl 2ـ ketomethylquinoline derivatives were synthesis by reaction of benzoyl chloride derivatives with Nـ methyl quinaldine iodide in the presence of triethyl amine under microwave irradiation. Enaminone form of the product study by spectroscopy method. The result revealed the Nـ alkyl 2ـ ketomethylquinoline the fixed enaminone tautomer.
- انتشار مقاله: 19-06-1394
- نویسندگان: Javad Safari,Hassan Karbasizadeh,Sayed Hossein Banitaba
- مشاهده
- جایگاه : پژوهشی
- مجله: International Journal of Heterocyclic Chemistry
- نوع مقاله: Journal Article
- کلمات کلیدی: Microwave Irradiation,Solvent-free conditions,Nـ alkyl 2ـ ketomethylquinoline,Enaminone,triethyl amine
- چکیده:
- چکیده انگلیسی: A series of Nـ alkyl 2ـ ketomethylquinoline derivatives were synthesis by reaction of benzoyl chloride derivatives with Nـ methyl quinaldine iodide in the presence of triethyl amine under microwave irradiation. Enaminone form of the product study by spectroscopy method. The result revealed the Nـ alkyl 2ـ ketomethylquinoline the fixed enaminone tautomer.
- انتشار مقاله: 08-03-1395
- نویسندگان: Javad Safari,Hassan Karbasizadeh,Sayed Hossein Banitaba
- مشاهده
- جایگاه : پژوهشی
- مجله: Asian Journal of Green Chemistry
- نوع مقاله: Journal Article
- کلمات کلیدی: Green chemistry,One-pot synthesis,Zinc sulfide nanoparticles,Benzimidazoles,o-Phenylenediamines
- چکیده:
- چکیده انگلیسی: An efficient and eco-friendly method for the synthesis of benzimidazole derivatives through the one-pot cyclocondensation of the substituted aldehydes with o-phenylenediamines over zinc sulfide nanoparticles (nano-ZnS) in ethanol as solvent at 70 °C has been described. The present method has several advantages such as high yields, easy purification, mild reaction conditions, easy work-up and short reaction times. The nanoparticles are easily synthesized, cheap, air and moisture stable, and also heterogenic and green catalysts.
- انتشار مقاله: 24-11-1397
- نویسندگان: Fatemeh Hakimi,Marzihe Dehghan Niri,Sayed Hossein Banitaba,Elham Golrasan
- مشاهده
- جایگاه : پژوهشی
- مجله: Asian Journal of Green Chemistry
- نوع مقاله: Journal Article
- کلمات کلیدی: Green chemistry,Phase-transfer catalysis,Polyethylene glycol-bis(N-methylimidazolium) dihydroxide,4H-pyran derivatives,Aqueous media
- چکیده:
- چکیده انگلیسی: Polyethylene glycol-bis (N-methylimidazolium) dihydroxide, [PEG(mim)2][OH]2, was prepared from the reaction of polyethylene glycol-bis (N-methylimidazolium) dibromide and sodium hydroxide in aqueous media at ambient temperature. The obtained solid was used as a novel, green, recyclable and efficient basic phase-transfer catalyst in the synthesis of 2-amino-3-cyano-4H-pyrans via the one-pot three-component condensation reaction of aromatic aldehydes, malononitrile and 1,3-dicarbonyl compounds in water at room temperature. The reactions without any basic reactants and in the presence of trace amounts of the catalyst gave the corresponding products with high yields in short reaction times. The phase-transfer catalyst could be successfully reused without the significant decrease in its activity.
- انتشار مقاله: 29-09-1397
- نویسندگان: Mehdi Fallah-Mehrjardi,Mojgan Foroughi,Sayed Hossein Banitaba
- مشاهده
- جایگاه : پژوهشی
- مجله: Asian Journal of Green Chemistry
- نوع مقاله: Journal Article
- کلمات کلیدی: Green chemistry,Phase-transfer catalysis,Polyethylene glycol-bis(N-methylimidazolium)dihydroxide,Knoevenagel condensation
- چکیده:
- چکیده انگلیسی: A basic phase-transfer catalyst ([PEG(mim)2][OH]2) was prepared from the reaction of polyethylene glycol-bis(N-methylimidazolium) dibromide and sodium hydroxide dissolved in water at ambient temperature. The obtained white solid was used as an efficient basic phase-transfer catalyst in Knoevenagel condensation reactions between aromatic aldehydes and active methylene compounds in water at room temperature. The reaction is done without side products and in the presence of trace amounts of the catalyst gives the corresponding products with high yields. The phase-transfer catalyst could be successfully reused without significant decrease in its activity for at least five cycles.
- انتشار مقاله: 16-09-1396
- نویسندگان: Fariba Poyafar,Mehdi Fallah-Mehrjardi,Sayed Hossein Banitaba
- مشاهده