Mohammad Alikarami

CuI-Catalyzed, Symmetrical Diaryl Sulfides Synthesis from Aryl Halides in the Presence of KF/Al 2 O 3 : Using Thiourea and Thiosemicarbazide as Sulfur Donor Sources

A convenient one-pot synthetic method is described for the synthesis of symmetrical diaryl sulfides via CuI- catalyzed cross-coupling reactions of various aryl halides and thiosemicarbazide (thiourea) in the presence of KF/Al2O3.

Synthesis of Diaryl Ethers Through the Copper-Catalyzed Arylation of Phenols with Aryl Iodides Using KF/Al2O3

Abstract An efficient synthesis of diaryl ethers by the copper-catalyzed arylation of phenols with a variety of aryl iodide susing KF/Al2O3 as a suitable base and CuI and 1,3 diphenyl-1,3 propandione as the catalyst is described.

Study of enzymatic degradation and water absorption of composites carboxymethyl cellulose and poly (ϵ-caprolactone) containing SiO2nanoparticle by cellulase

This study investigates the effect of Poly (ϵ-Caprolactone (PCL) and Nano-SiO2content within the Carboxymethyl Cellulose (CMC) blends on the rate and extent of carboxymethyl cellulose enzymatic hydrolysis using the enzyme cellulase. The results reveal that blends with Nano-SiO2content at 5 wt% exhibit a significantly reduced rate and extent of CMC hydrolysis. This may be attributed to interactions between CMC and SiO2that prevent further enzymatic attack on the remaining CMC phases within the blend. The total solids that remained after 2880 min were 44.8 wt.% (CMC: PCL); 62.7 wt.% (CMC: PCL: 1% Nano-SiO2); 69.8 wt.% (CMC: PCL: 3% Nano-SiO2); 73.1 wt.% (CMC: PCL: 5% Nano-SiO2). Enzymatic degradation behaviour of CMC: PCL: Nano-SiO2was based on the determinations of water resistance, weight loss and the reducing sugars. The degraded residues have been examined by scanning electronic microscopy (SEM) and UV–Vis spectroscopy.

Copper-Catalyzed Coupling of Aryl Halides with Terminal Alkynes in the Presence of KF/Al2O3

A convenient catalyst system consisting of copper iodide, L-proline, and potassium fluoride/Al2O3 was effective for the coupling reaction of aryl iodides and bromides with terminal alkynes. In contrast to the conventional Sonogashira reactions, the new procedure is free of palladium and phosphines. Different functionalized aryl halides were coupled with terminal alkynes using this system in good to excellent yields.

Synthesis of quinoline derivatives from the reaction of aminobenzophenones and acetylenic esters in the presence of SnO2 nanoparticles

Nano SnO2 catalyzes the two-component reaction of 2-aminobenzophenones with acetylenic mono or diesters under mild conditions to afford quinoline derivatives in high yields. Nano SnO2 shows high activity when used as surface catalyst for the synthesis of quinoline derivatives.

Choline chloride based thiourea catalyzed highly efficient, eco-friendly synthesis and anti-bacterial evaluation of some new 6-amino-4-aryl-2,4-dihydro-3-phenyl pyrano [2,3-c] pyrazole-5-carbonitrile derivatives

In this study, a simple and highly efficient synthesis of some new 6-amino-4-aryl-2,4-dihydro-3-phenyl pyrano [2,3-c] pyrazole-5-carbonitrile derivatives by one-pot, four-component reaction with aryl aldehydes, hydrazine hydrate, ethyl benzoylacetate and malonitrile has been achieved. This method provides many advantages such as shorter reaction time with high yields, mild reaction conditions and environmental friendliness. Furthermore, all compounds were subsequently evaluated for their in-vitro antibacterial activity compared with cefazolin by minimum inhibitory concentration, all of these compounds were more active than cefazolin. The characterization of the synthesized compounds was established by melting point, IR, 1H NMR and 13C NMR spectra.