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- Title
Synthesis of 4,4'-(arylmethylene)bis(3-carboxymethyl-1-phenyl-1H-pyrazol-5-ol)s using ionic liquid attached to colloidal silica nanoparticles in water.
- Authors
Shahbazi-Alavi, Hossein; Safaei-Ghomi, Javad; Esmaili, Samane; Nazemzadeh, Seyed Hadi
- Abstract
An efficient synthesis of 10 4,4'-(arylmethylene)bis(3-carboxymethyl-1-phenyl-1H-pyrazol-5-ol)s, eight of which are novel, was achieved by a one-pot three-component reaction of phenylhydrazine, dimethyl acetylenedicarboxylate and an arylaldehyde using bis(1(3- methoxysilylpropyl)-3-methyl-imidazolium) copper tetrachloride tethered to colloidal silica nanoparticles as catalyst under microwave irradiation in water. The advantages of the present process are atom economy, high catalytic activity, excellent yields, short reaction times and utilisation of microwave heating as a clean procedure. The catalyst was recyclable.
- Subjects
CARBOXYMETHYL compounds; CARBENE derivatives; PYRAZOLE derivatives; PHENYL compounds; IONIC liquids; SILICA nanoparticles; WATER chemistry; ARYLATION
- Publication
Journal of Chemical Research, 2017, Vol 41, Issue 8, p457
- ISSN
1747-5198
- Publication type
Article
- DOI
10.3184/174751917X15000317104529