نتایج جستجو برای: thermoregulated ionic liquid biphasic system

تعداد نتایج: 2455607  

Journal: :ACS Catalysis 2022

Biphasic catalysis enables the effective recycling of homogeneous catalysts by their immobilization in an additional liquid phase immiscible with products. The introduced liquid–liquid interfacial area implies mass transfer limitations that play important role understanding these catalytic systems, many rate enhancement strategies revolving around optimizing said area. In this contribution, rel...

A variety of alcohols readily add to 3,4-dihydro-2H-pyran under solvent free conditions in the presence of catalytic amount of acidic ionic liquid [Et3N(CH2)4SO3H][OTs] to afford the corresponding tetrahydropyranyl ethers in good to excellent yields at room temperature. The use of this procedure allows easy separation of the desired products ...

Journal: :journal of the iranian chemical research 0
majid ramezani department of chemistry, faculty of science, islamic azad university, arak branch, arak, iran mohsen heidarzadeh department of chemistry, faculty of science, islamic azad university, arak branch, arak, iran fatemeh yousefi department of chemistry, faculty of science, islamic azad university, arak branch, arak, iran

a simple, rapid and efficient dispersive liquid–liquid microextraction by use of ionic liquid (il-dllme)method, followed by flame atomic absorption spectrometry (faas) was developed for the preconcentrationand determination of palladium in water samples. in this method, an appropriate mixture of acetone and octylmethyl imidazolium hexafluorophosphate was injected rapidly into the aqueous sample...

Journal: :iranian journal of pharmaceutical research 0
aazam monfared dr. mojab zohreh esmaeeli dr. monfared

the anticoagulant racemic warfarin is synthesized by the michael addition of 4-hydroxycoumarin with benzalacetone in the present of equimolar amounts of imidazolium based ionic liquids [bmim] bf4 and [bmim] br and other reaction solvents such as h2o, pyridine and ammonia in five different tests. also synthesis of a derivative of warfarin (2-methyl-4-phenyl pyrano [3, 2-c] chromen-5(4h)-one) und...

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