Number 1 Volume 7

Open Access Article

1 - Magnetic nanoparticles containing Manganese salophen complex as an selective and recyclable catalyst for epoxidation of alkenes
Mozhgan Afshari Maryam Gorjizadeh Simin Nazari

A magnetically recoverable catalyst consisting of Mn (III) salophen complex was prepared. The synthesized catalyst was characterized by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), vibrating sample magnetometry (VSM), inductively coupled plasm More

A magnetically recoverable catalyst consisting of Mn (III) salophen complex was prepared. The synthesized catalyst was characterized by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), vibrating sample magnetometry (VSM), inductively coupled plasma atomic emission spectroscopy (ICP-AES) and Fourier transform infrared (FT-IR). The immobilized catalyst was shown to be an efficient heterogeneous catalyst for the epoxidation of various alkenes using hydrogen peroxide (H2O2) as oxidant. The catalyst could be easily and efficiently isolated from the final product solution by magnetic decantation and be reused for 5 consecutive reactions without showing any significant activity degradation. Manuscript profile

Open Access Article

2 - Cyclohexane-1,4-diyl bis (hydrogen sulfate) as an efficient homogeneous catalyst for one-pot multi-component synthesis of dihydropyrimidones via Biginelli reaction
ramin rezaei sara ahmadi sedigheh abdollahi

A green methodology for the development of the synthesis of dihydropyrimidinones via a clean multi-component Biginelli reaction by using cyclohexane-1,4-diyl bis (hydrogen sulfate) (CDBH) as an effective catalyst in water and solvent-free conditions was reported. This s More

A green methodology for the development of the synthesis of dihydropyrimidinones via a clean multi-component Biginelli reaction by using cyclohexane-1,4-diyl bis (hydrogen sulfate) (CDBH) as an effective catalyst in water and solvent-free conditions was reported. This sulfonated catalyst is an efficient and environmentally benign homogeneous catalysts which characterized by using different techniques such as FT-IR and 1H NMR spectra and also titrimetric curves. Finally, we did the density functional and atom in molecules (AIM) study to have a better understanding about the electronic properties and intra molecular hydrogen bonds of this new catalyst. To show the merit of the present work in comparison with reported results in the literature, we compared the results of CDBH catalyst with reported sulfonated catalysts in the Biginelli reaction. Easy preparation of the catalyst, short reaction times, and good to high yields of the products and reusability of the catalyst are some of the advantages of this novel method. Manuscript profile

Open Access Article

3 - Synthesis and estimations of antimicrobial properties of novel pyrazoline derivatives
Manorama B. Motegaonkar S. D. Salunke

Chalcones are the condensation product of acetophenone in combination with aromatic aldehydes in the presence of strong base. Chalcones and their metal complexes having prominent role in modern coordination chemistry. These compounds possessing novel structural features More

Chalcones are the condensation product of acetophenone in combination with aromatic aldehydes in the presence of strong base. Chalcones and their metal complexes having prominent role in modern coordination chemistry. These compounds possessing novel structural features, interesting spectral and magnetic properties, have been the subject of intensive research due to their importance in medical, agriculture, analytical, biological and industrial fields. A series of chalcones were prepared by claisen Schmidt condensation of substituted 3-cinnamoyl-4-hydroxy-6- methyl-2-pyrones were synthesized by base catalyzed condensation of 3-acetyl-4-hydroxy-6-methyl-2-oxa-2h-pyran (DHA) with different aromatic aldehyde. Biologically active pyrazoline derivatives were synthesized using ethanol via cyclization reaction with phenyl hydrazine hydrates from chalcones. The entire synthesized compounds were confirmed by IR, 1HNMR and Mass spectral analysis. It was found that the synthesized compounds possess standard pick at desired functional groups, protons and mass of compound. The newly synthesized pyrazoline derivatives (MBPI-MBPV) were tested for their antimicrobial activities which reflects moderate to good activity against different strain of bacterial and fungi species. The pyrazoline derivatives synthesized in this research having applicability in the medical, pharmaceutical and agricultural filed. Manuscript profile

Open Access Article

4 - A green approach for the synthesis of 2-amino-4H-chromene derivatives using Polystyrene-Supported 1-Methylimidazolium tetrachloroferrate as an efficient heterogeneous catalyst in water
Narges Taheri Atena Azin soheil sayahi

In this study, we reported facile and efficient synthesis of 2-amino-4H-chromenes that catalyzed by polystyrene-supported 1-methylimidazolium tetrachloroferrateas. The synthesis proceeds with various aldehydes under mild conditions and afford the target products with go More

In this study, we reported facile and efficient synthesis of 2-amino-4H-chromenes that catalyzed by polystyrene-supported 1-methylimidazolium tetrachloroferrateas. The synthesis proceeds with various aldehydes under mild conditions and afford the target products with good to high yields. Manuscript profile

Open Access Article

5 - Light promoted synthesis of 1,8-dioxooctahydroxanthenes using sulphated tin oxide as solid support catalyst
Tabassum Siddiqui Pramod Kulkarni Pudukulatham Zubaidha

In the past few years multi component reactions have captured the attention of synthetic chemists as they provide easy access to diverse complex organic molecules through carbon - carbon and carbon - heteroatom bond formations in tandem manner with simple easy to carry More

In the past few years multi component reactions have captured the attention of synthetic chemists as they provide easy access to diverse complex organic molecules through carbon - carbon and carbon - heteroatom bond formations in tandem manner with simple easy to carry out reaction conditions in short time. 1,8-dioxo-octahydroxanthene is a significant class of oxygen containing heterocycle in which a phenyl substituted pyran ring is fused on either side with two cyclohexanone rings and this unit constitutes in a number of natural products with wide range of therapeutic and pharmacological properties. The present paper describes house hold 100 watt bulb promoted multicomponent reaction between dimedone and various substituted cinnamaldehydes/ substituted benzaldehydes to afford the corresponding 1,8-dioxo-octahydroxanthene derivatives using sulphated tinoxide as solid supported catalyst. This green procedure using heterogenous catalyst and light as source of energy provides facile access to a variety of 1,8-dioxo- octahydroxanthene derivatives in good to excellent yield. Manuscript profile

Open Access Article

6 - Reaction of benzoylpyruvate with a mixture of aromatic aldehydes and 5-amino-1,3,4-thiadizole-2-thiol
Neda Tavakkoli Hassan Kabirifard

Reactions of benzoylpyruvate with a mixture of aromatic aldehydes and 5-amino-1,3,4-thiadizole-2-thiol in a 1:1:1 molar ratio, afforded 5-(5-aryl-4-benzoyl-3-hydroxy-2-oxo-2,5-dihydro-1H-pyrrol-1-yl)-1,3,4-thiadizole-2-thiols (3a-c). The structure of the resulted produc More

Reactions of benzoylpyruvate with a mixture of aromatic aldehydes and 5-amino-1,3,4-thiadizole-2-thiol in a 1:1:1 molar ratio, afforded 5-(5-aryl-4-benzoyl-3-hydroxy-2-oxo-2,5-dihydro-1H-pyrrol-1-yl)-1,3,4-thiadizole-2-thiols (3a-c). The structure of the resulted products was confirmed by determination of the melting point and spectrophotometric techniques such as IR and 1H-NMR spectroscopy. Manuscript profile

XML

List of Articles