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Tavakoli, Hamid Reza,Moosavi, Sayed Mojtaba,Bazgir, Ayoob Korean Chemical Society 2013 대한화학회지 Vol.57 No.2
An efficient and environmentally benign protocol for the pseudo four-component synthesis of benzopyranopyrimidines via condensation of salicylic aldehydes, malononitrile and various amines catalyzed by $ZrOCl_2{\cdot}8H_2O$ as an inexpensive and eco-friendly catalyst with high catalytic activity under solvent-free conditions is reported. This protocol provides a new and improved method for obtaining benzopyranopyrimidines in terms of good yields, simple experimental procedure and short reaction time.
Tavakoli, Hamid Reza,Moosavi, Sayed Mojtaba,Bazgir, Ayoob Korean Chemical Society 2013 대한화학회지 Vol.57 No.4
An efficient and environmentally benign protocol for the three-component synthesis of triazoloindazoles and indazolophthalazines via condensation of dimedone, aldehydes and urazole or phthalhydrazide catalyzed by $ZrOCl_2.8H_2O$ as an inexpensive and eco-friendly catalyst with high catalytic activity under solvent-free conditions is reported. This protocol provides a new and improved method for obtaining triazoloindazoles and indazolophthalazines in terms of good yields, simple experimental procedure and short reaction time.
Kamran Valizadeh,Amir Heydarinasab,Seyed Saeid Hosseini,Saeed Bazgir 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.106 No.-
In this research, to prepare a polymer membrane with hydrophilic nature that has anti-fouling and antiadhesionproperties first, polyvinyl imidazole (PVI) Polymer was bonded as a surface modifier of fluorinatedpolyvinylidene (PVDF) membranes by Atom transfer radical polymerization (ATRP) method. Therefore, to confirm the chemical changes of the hydrophilic membrane surface such as PVI polymerchain bonding and to investigate the uniform distribution of the polymer in the modified membranepores and surface, experiments such as attenuated general reflectance (ATR-FTIR), nuclear magnetic resonance(H-NMR), Water contact angle (WCA) and scanning electron microscopy (SEM), zeta potential,Atomic force microscopy (AFM) spectroscopy, Thermo-gravimetric analysis (TGA), X-ray energy scattering(EDX), X-ray diffraction (XRD) patterns were performed. The results showed that the WCA for M1membrane was about 83.37 ± 1.77 and Mb6 membrane was about 35.45 ± 1.45, which improved theWCA rate ofMb6 membrane surface by about 57.10%.Therefore, the total Anti-fouling rate and Flux recoveryratio (FRR) and rejection oil rate increased by about 35.2%, 18.65% and 10%, respectively. This studyaimed to investigate the surface modification of membranes prepared with hydrophilic polymer PVI toseparate oil from the oil-in-water emulsion, which is a suitable method and potential approach in controllinglarge-volume oil-in-water emulsion effluents.