نتایج جستجو برای: green solvent

تعداد نتایج: 193244  

Journal: :Journal of advanced scientific research 2022

Currently, chemists seem more fascinated with exploiting less hazardous green solvent ionic liquids for countering the detrimental consequence of organic solvents on environment. Ordinarily, having salt-like structures comprise cations and anions. Ionic alleviate various enzyme-catalyzed reactions excellent yields, increasing capacities functions, enhancing recyclability, stability, recovery, c...

Oxalic acid dihydrate as a green, mild and efficient catalyst for the one-pot three-component Biginelli synthesis of 3,4-dihydropyrimidin-2-(1H)-one derivatives from the reaction between β-keto esters (methyl or ethyl acetoacetate), aromatic aldehyde (benzaldehye derivatives) and urea or thiourea under thermal and solvent-free conditions with excellent yields and short reaction time is st...

For the first time lactic acid was applied as an efficient and green catalyst for the one-pot three-component synthesis of amidoalkyl naphthols via the condensation between arylaldehydes, 2-naphthol and amides or urea under thermal solvent-free conditions in good to excellent yields. We have demonestrated a mild and efficient eco-friendly tandem synthesis of amidoalkyl naphthols using lactic ac...

Journal: :iranian journal of catalysis 2016
sahar shokrollahi ali ramazani seyed jamal tabatabaei rezaei asemeh mashhadi malekzadeh pegah azimzadeh asiabi

the condensation of benzylamine with glyoxal leads to hexabenzylhexaazaisowurtzitane (hbiw) in acetonitrile solvent with citric acid as a green catalyst under both conventional stirring and ultrasonic irradiation conditions. the influence of four variables, including the amount of catalyst, solvent, reaction time and ultrasonic power, on the reaction yield was investigated. the results showed t...

Journal: :international journal of bio-inorganic hybrid nanomaterials 2015
a.s. shahvelayati m. sabbaghan s. banihashem

a simple, green synthesis of n-alkyl-3-acetyl-2-methylpyrrole derivatives using zno nanoparticles from the three component reaction of aliphatic amines, acetylacetone (as a 1,3-dicarbonyl compound) and α-haloketones under solvent-free condition is described.

Oxalic acid dihydrate as a green, mild and efficient catalyst for the one-pot three-component Biginelli synthesis of 3,4-dihydropyrimidin-2-(1H)-one derivatives from the reaction between β-keto esters (methyl or ethyl acetoacetate), aromatic aldehyde (benzaldehye derivatives) and urea or thiourea under thermal and solvent-free conditions with excellent yields and short reaction time is st...

Friedel–Crafts synthesis of triarylmethanes over 3-methyl-1-sulfonic acid imidazolium tetrachloroaluminate under green conditions:In this work, Friedel–Crafts (FC) alkylation of various arenes with aromatic aldehydes catalyzed by 3-methyl-1-sulfonic acid imidazoliumtetrachloroaluminate {[Msim]AlCl4}, as a green catalyst, to prepare triarylmethanes (TAMs) has been carried out. Some aromatic alde...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2011
farajollah mohanazadeh sakineh rahimi

n,n-diethylethanaminium-2-(sulfooxy) ethyl sulfate was synthesized and used as  an efficient, green, and recyclable catalyst and solvent for the nitration of aromatic compounds by nitric acid at 80oc

Journal: :organic chemistry research 0
mona hosseini-sarvari shiraz university golnaz parhizgar

epoxides undergo regioselective ring opening with various nucleophiles using catalytic amount of nano magnesium oxide and water as solvent under mild reaction conditions. the remarkable features of this method are improved yields, high regioselectivity, and green chemistry agreement.

For the first time lactic acid was applied as an efficient and green catalyst for the one-pot three-component synthesis of amidoalkyl naphthols via the condensation between arylaldehydes, 2-naphthol and amides or urea under thermal solvent-free conditions in good to excellent yields. We have demonestrated a mild and efficient eco-friendly tandem synthesis of amidoalkyl naphthols using lactic ac...

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