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کاربرد نوع شرط:
- 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